pkg-config support; prepare for 2.4.1.0

Signed-off-by: Laurent Bercot <ska@appnovation.com>

26 files changed, 962 insertions, 111 deletions

diff --git a/.gitignore b/.gitignore
index 7273fb1..a9f831d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+/*.pc
 *.o
 *.lo
 /config.mak
diff --git a/INSTALL b/INSTALL
index 0c63e81..555c2cc 100644
--- a/INSTALL
+++ b/INSTALL
@@ -27,6 +27,33 @@ POSIX.1-2008, available at:
 off them.
 
 
+* pkg-config
+  ----------
+
+ pkg-config is a tool used by some Linux and BSD distributions, providing
+a registry to store policy information about libraries exported by a
+software package; that is supposed to make it easier to build software
+depending on these libraries, by having a tool to automatically extract
+the various flags to pass to the compiler and linker in order to correctly
+build against these libraries.
+ This package supports pkg-config, but you need to explicitly ask for it:
+ - To use the pkg-config tool to *read* information from the registry and
+use it to build *this* package: --with-pkgconfig[=PROG]. This assumes
+PROG supports the pkg-config interface (as the popular pkgconf
+implementation does). If PROG is not supplied, the PKG_CONFIG environment
+variable is used to find the program to use, and if empty/unset, it defaults
+to pkg-config.
+ - To build a .pc file for each library exported by this package, and then
+install it to the pkg-config registry, in other words to *write* information
+so that other software can use pkg-config to build against this package,
+use --enable-pkgconfig.
+
+ pkg-config and slashpackage (see below) configure options can be set
+together, but the slashpackage convention provides its own installation
+policies that generally make it unnecessary to use pkg-config. You
+probably should not mix both.
+
+
 * Customization
   -------------
 
diff --git a/Makefile b/Makefile
index b82361b..752b8ba 100644
--- a/Makefile
+++ b/Makefile
@@ -12,28 +12,65 @@ ifeq "" "$(strip $(filter $(make_need), $(firstword $(sort $(make_need) $(MAKE_V
 fail := $(error Your make ($(MAKE_VERSION)) is too old. You need $(make_need) or newer)
 endif
 
+uniq = $(if $1,$(firstword $1) $(call uniq,$(filter-out $(firstword $1),$1)))
+
 CC = $(error Please use ./configure first)
 
 STATIC_LIBS :=
 SHARED_LIBS :=
 INTERNAL_LIBS :=
 EXTRA_TARGETS :=
+PC_TARGETS :=
 LIB_DEFS :=
+BIN_SYMLINKS :=
+TEST_BINS :=
 
 define library_definition
-LIB$(firstword $(subst =, ,$(1))) := lib$(lastword $(subst =, ,$(1))).$(if $(DO_ALLSTATIC),a,so).xyzzy
+LIB$(1) := lib$(2).$(if $(DO_ALLSTATIC),a,so).xyzzy
 ifdef DO_SHARED
-SHARED_LIBS += lib$(lastword $(subst =, ,$(1))).so.xyzzy
+SHARED_LIBS += lib$(2).so.xyzzy
 endif
 ifdef DO_STATIC
-STATIC_LIBS += lib$(lastword $(subst =, ,$(1))).a.xyzzy
+STATIC_LIBS += lib$(2).a.xyzzy
+endif
+ifdef DO_PKGCONFIG
+PC_TARGETS += lib$(2).pc
 endif
+
+lib$(2).pc:
+	exec env \
+	  library="$(2)" \
+	  includedir="$(includedir)" \
+	  dynlibdir="$(dynlibdir)" \
+	  libdir="$(libdir)" \
+	  extra_includedirs="$(extra_includedirs)" \
+	  extra_libdirs="$(extra_libdirs)" \
+	  extra_libs="$$(strip $$(EXTRA_LIBS))" \
+	  description="$$($(1)_DESCRIPTION)" \
+	  url="$$($(1)_URL)" \
+	  ldlibs="$(LDLIBS)" \
+	  ./tools/gen-dotpc.sh > $$@.tmp
+	exec mv -f $$@.tmp $$@
+
+endef
+
+define binary_installation_rule
+$(DESTDIR)$(1)/$(2): ./$(2) package/modes
+	exec $(INSTALL) -D -m 600 $$< $$@
+	grep -- ^$$(@F) < package/modes | { read name mode owner && \
+	if [ x$$$$owner != x ] ; then chown -- $$$$owner $$@ ; fi && \
+	chmod $$$$mode $$@ ; }
+endef
+
+define symlink_installation_rule
+$(DESTDIR)$(1)/$(2): $(DESTDIR)$(1)/$(SYMLINK_TARGET_$(2))
+	exec $(INSTALL) -l $$(<F) $$@
 endef
 
 -include config.mak
 include package/targets.mak
 
-$(foreach var,$(LIB_DEFS),$(eval $(call library_definition,$(var))))
+$(foreach var,$(LIB_DEFS),$(eval $(call library_definition,$(firstword $(subst =, ,$(var))),$(lastword $(subst =, ,$(var))))))
 
 include package/deps.mak
 
@@ -53,14 +90,18 @@ RANLIB := $(CROSS_COMPILE)ranlib
 STRIP := $(CROSS_COMPILE)strip
 INSTALL := ./tools/install.sh
 
+$(foreach var,$(BIN_TARGETS),$(eval $(call binary_installation_rule,$(bindir),$(var))))
+$(foreach var,$(LIBEXEC_TARGETS),$(eval $(call binary_installation_rule,$(libexecdir),$(var))))
+$(foreach var,$(BIN_SYMLINKS),$(eval $(call symlink_installation_rule,$(bindir),$(var))))
+
 ALL_BINS := $(LIBEXEC_TARGETS) $(BIN_TARGETS)
 ALL_LIBS := $(SHARED_LIBS) $(STATIC_LIBS) $(INTERNAL_LIBS)
 ALL_INCLUDES := $(wildcard src/include/$(package)/*.h)
 
-all: $(ALL_LIBS) $(ALL_BINS) $(ALL_INCLUDES) $(EXTRA_INCLUDES)
+all: $(ALL_LIBS) $(ALL_BINS) $(ALL_INCLUDES) $(EXTRA_INCLUDES) $(PC_TARGETS)
 
 clean:
-	@exec rm -f $(ALL_LIBS) $(ALL_BINS) $(wildcard src/*/*.o src/*/*.lo) $(EXTRA_TARGETS)
+	@exec rm -f $(ALL_LIBS) $(ALL_BINS) $(TEST_BINS) $(wildcard src/*/*.o src/*/*.lo) $(PC_TARGETS) $(EXTRA_TARGETS)
 
 distclean: clean
 	@exec rm -f config.mak src/include/$(package)/config.h
@@ -81,12 +122,19 @@ ifneq ($(strip $(ALL_BINS)$(SHARED_LIBS)),)
 	exec $(STRIP) -R .note -R .comment $(ALL_BINS) $(SHARED_LIBS)
 endif
 
-install: install-dynlib install-libexec install-bin install-lib install-include
+install: install-dynlib install-libexec install-bin install-symlinks install-lib install-include install-pkgconfig
 install-dynlib: $(SHARED_LIBS:lib%.so.xyzzy=$(DESTDIR)$(dynlibdir)/lib%.so)
 install-libexec: $(LIBEXEC_TARGETS:%=$(DESTDIR)$(libexecdir)/%)
 install-bin: $(BIN_TARGETS:%=$(DESTDIR)$(bindir)/%)
+install-symlinks: $(BIN_SYMLINKS:%=$(DESTDIR)$(bindir)/%)
 install-lib: $(STATIC_LIBS:lib%.a.xyzzy=$(DESTDIR)$(libdir)/lib%.a)
 install-include: $(ALL_INCLUDES:src/include/$(package)/%.h=$(DESTDIR)$(includedir)/$(package)/%.h) $(EXTRA_INCLUDES:src/include/%.h=$(DESTDIR)$(includedir)/%.h)
+install-pkgconfig: $(PC_TARGETS:%=$(DESTDIR)$(pkgconfdir)/%)
+
+tests: $(TEST_BINS)
+
+check: tests
+	@for i in $(TEST_BINS) ; do ./tools/run-test.sh $$i || exit 1 ; done
 
 ifneq ($(exthome),)
 
@@ -95,7 +143,7 @@ $(DESTDIR)$(exthome): $(DESTDIR)$(home)
 
 update: $(DESTDIR)$(exthome)
 
-global-links: $(DESTDIR)$(exthome) $(SHARED_LIBS:lib%.so.xyzzy=$(DESTDIR)$(sproot)/library.so/lib%.so.$(version_M)) $(BIN_TARGETS:%=$(DESTDIR)$(sproot)/command/%)
+global-links: $(DESTDIR)$(exthome) $(SHARED_LIBS:lib%.so.xyzzy=$(DESTDIR)$(sproot)/library.so/lib%.so.$(version_M)) $(BIN_TARGETS:%=$(DESTDIR)$(sproot)/command/%) $(BIN_SYMLINKS:%=$(DESTDIR)$(sproot)/command/%)
 
 $(DESTDIR)$(sproot)/command/%: $(DESTDIR)$(home)/command/%
 	exec $(INSTALL) -D -l ..$(subst $(sproot),,$(exthome))/command/$(<F) $@
@@ -112,12 +160,6 @@ $(DESTDIR)$(dynlibdir)/lib%.so $(DESTDIR)$(dynlibdir)/lib%.so.$(version_M): lib%
 	$(INSTALL) -l $(@F).$(version) $@.$(version_M) && \
 	exec $(INSTALL) -l $(@F).$(version_M) $@
 
-$(DESTDIR)$(libexecdir)/% $(DESTDIR)$(bindir)/%: % package/modes
-	exec $(INSTALL) -D -m 600 $< $@
-	grep -- ^$(@F) < package/modes | { read name mode owner && \
-	if [ x$$owner != x ] ; then chown -- $$owner $@ ; fi && \
-	chmod $$mode $@ ; }
-
 $(DESTDIR)$(libdir)/lib%.a: lib%.a.xyzzy
 	exec $(INSTALL) -D -m 644 $< $@
 
@@ -127,13 +169,16 @@ $(DESTDIR)$(includedir)/$(package)/%.h: src/include/$(package)/%.h
 $(DESTDIR)$(includedir)/%.h: src/include/%.h
 	exec $(INSTALL) -D -m 644 $< $@
 
+$(DESTDIR)$(pkgconfdir)/lib%.pc: lib%.pc
+	exec $(INSTALL) -D -m 644 $< $@
+
 %.o: %.c
 	exec $(CC) $(CPPFLAGS_ALL) $(CFLAGS_ALL) -c -o $@ $<
 
 %.lo: %.c
 	exec $(CC) $(CPPFLAGS_ALL) $(CFLAGS_ALL) $(CFLAGS_SHARED) -c -o $@ $<
 
-$(ALL_BINS):
+$(ALL_BINS) $(TEST_BINS):
 	exec $(CC) -o $@ $(CFLAGS_ALL) $(LDFLAGS_ALL) $(LDFLAGS_NOSHARED) $^ $(EXTRA_LIBS) $(LDLIBS)
 
 lib%.a.xyzzy:
@@ -141,8 +186,8 @@ lib%.a.xyzzy:
 	exec $(RANLIB) $@
 
 lib%.so.xyzzy:
-	exec $(CC) -o $@ $(CFLAGS_ALL) $(CFLAGS_SHARED) $(LDFLAGS_ALL) $(LDFLAGS_SHARED) -Wl,-soname,$(patsubst lib%.so.xyzzy,lib%.so.$(version_M),$@) $^ $(EXTRA_LIBS) $(LDLIBS)
+	exec $(CC) -o $@ $(CFLAGS_ALL) $(CFLAGS_SHARED) $(LDFLAGS_ALL) $(LDFLAGS_SHARED) -Wl,-soname,$(patsubst lib%.so.xyzzy,lib%.so.$(version_M),$@) -Wl,-rpath=$(dynlibdir) $^ $(EXTRA_LIBS) $(LDLIBS)
 
-.PHONY: it all clean distclean tgz strip install install-dynlib install-bin install-lib install-include
+.PHONY: it all clean distclean tests check tgz strip install install-dynlib install-bin install-lib install-include install-pkgconfig
 
 .DELETE_ON_ERROR:
diff --git a/NEWS b/NEWS
index fab090d..b01c0ae 100644
--- a/NEWS
+++ b/NEWS
@@ -1,9 +1,10 @@
 Changelog for s6-dns.
 
-In 2.4.0.1
+In 2.4.1.0
 ----------
 
  - Bugfixes.
+ - pkg-config support.
 
 
 In 2.4.0.0
diff --git a/configure b/configure
index 52aad7b..a301263 100755
--- a/configure
+++ b/configure
@@ -23,6 +23,7 @@ Fine tuning of the installation directories:
   --libexecdir=DIR              package-scoped executables [EPREFIX/libexec]
   --libdir=DIR                  static library files [PREFIX/lib]
   --includedir=DIR              C header files [PREFIX/include]
+  --pkgconfdir=DIR              pkg-config .pc files [PREFIX/lib/pkgconfig]
 
  If no --prefix option is given, by default libdir (but not dynlibdir) will be
  /usr/lib, and includedir will be /usr/include.
@@ -32,6 +33,7 @@ Dependencies:
   --with-include=DIR            add DIR to the list of searched directories for headers
   --with-lib=DIR                add DIR to the list of searched directories for static libraries
   --with-dynlib=DIR             add DIR to the list of searched directories for shared libraries
+  --with-pkgconfig[=PROG]       use pkg-config to look for dependencies
 
  If no --prefix option is given, by default sysdeps will be fetched from
  /usr/lib/skalibs/sysdeps.
@@ -42,9 +44,9 @@ Optional features:
   --disable-allstatic           do not prefer linking against static libraries [enabled]
   --enable-static-libc          make entirely static binaries [disabled]
   --disable-all-pic             do not build executables or static libs as PIC [enabled]
+  --enable-pkgconfig            Build and install .pc files for pkg-config [disabled]
   --enable-slashpackage[=ROOT]  assume /package installation at ROOT [disabled]
-  --enable-absolute-paths       do not rely on PATH to access this package's binaries,
-                                  hardcode absolute BINDIR/foobar paths instead [disabled]
+  --enable-absolute-paths       hardcode absolute BINDIR/foobar paths in binaries [disabled]
 
 EOF
 exit 0
@@ -139,6 +141,8 @@ libexecdir='$exec_prefix/libexec'
 bindir='$exec_prefix/bin'
 libdir='$prefix/lib'
 includedir='$prefix/include'
+pkgconfdir='$prefix/lib/pkgconfig'
+shebangdir='$bindir'
 sysdeps='$prefix/lib/skalibs/sysdeps'
 manualsysdeps=false
 shared=false
@@ -146,18 +150,23 @@ static=true
 allpic=true
 slashpackage=false
 abspath=false
+pcw=false
 sproot=
 home=
 exthome=
 allstatic=true
 evenmorestatic=false
+pkgconf=
 addincpath=''
 addlibspath=''
 addlibdpath=''
+depincpath=''
+deplibpath=''
 vpaths=''
 vpathd=''
 build=
 
+
 for arg ; do
   case "$arg" in
     --help) usage ;;
@@ -168,10 +177,14 @@ for arg ; do
     --bindir=*) bindir=${arg#*=} ;;
     --libdir=*) libdir=${arg#*=} ;;
     --includedir=*) includedir=${arg#*=} ;;
+    --pkgconfigdir=*) pkgconfigdir=${arg#*=} ;;
     --with-sysdeps=*) sysdeps=${arg#*=} manualsysdeps=true ;;
-    --with-include=*) var=${arg#*=} ; stripdir var ; addincpath="$addincpath -I$var" ;;
-    --with-lib=*) var=${arg#*=} ; stripdir var ; addlibspath="$addlibspath -L$var" ; vpaths="$vpaths $var" ;;
+    --with-include=*) var=${arg#*=} ; stripdir var ; addincpath="$addincpath -I$var" ; depincpath="${depincpath}${depincpath:+ }-I$var" ;;
+    --with-lib=*) var=${arg#*=} ; stripdir var ; addlibspath="$addlibspath -L$var" ; deplibpath="${deplibpath}${deplibpath:+ }-I$var" ; vpaths="$vpaths $var" ;;
     --with-dynlib=*) var=${arg#*=} ; stripdir var ; addlibdpath="$addlibdpath -L$var" ; vpathd="$vpathd $var" ;;
+    --with-pkgconfig=*) pkgconf=${arg#*=} ;;
+    --with-pkgconfig) pkgconf=${PKG_CONFIG:-pkg-config} ;;
+    --without-pkgconfig) pkgconf= ;;
     --enable-shared|--enable-shared=yes) shared=true ;;
     --disable-shared|--enable-shared=no) shared=false ;;
     --enable-static|--enable-static=yes) static=true ;;
@@ -182,11 +195,15 @@ for arg ; do
     --disable-static-libc|--enable-static-libc=no) evenmorestatic=false ;;
     --enable-all-pic|--enable-all-pic=yes) allpic=true ;;
     --disable-all-pic|--enable-all-pic=no) allpic=false ;;
+    --enable-pkgconfig|--enable-pkgconfig=yes) pcw=true ;;
+    --disable-pkgconfig|--enable-pkgconfig=no) pcw=false ;;
     --enable-slashpackage=*) sproot=${arg#*=} ; slashpackage=true ; ;;
     --enable-slashpackage) sproot= ; slashpackage=true ;;
     --disable-slashpackage) sproot= ; slashpackage=false ;;
     --enable-absolute-paths|--enable-absolute-paths=yes) abspath=true ;;
     --disable-absolute-paths|--enable-absolute-paths=no) abspath=false ;;
+
+    --enable-*|--disable-*|--with-*|--without-*|--*dir=*) ;;
     --enable-*|--disable-*|--with-*|--without-*|--*dir=*) ;;
     --host=*|--target=*) target=${arg#*=} ;;
     --build=*) build=${arg#*=} ;;
@@ -204,6 +221,9 @@ if test -z "$prefix" ; then
   if test "$includedir" = '$prefix/include' ; then
     includedir=/usr/include
   fi
+  if test "$pkgconfdir" = '$prefix/lib/pkgconfig' ; then
+    pkgconfdir=/usr/lib/pkgconfig
+  fi
   if test "$sysdeps" = '$prefix/lib/skalibs/sysdeps' ; then
     sysdeps=/usr/lib/skalibs/sysdeps
   fi
@@ -211,29 +231,60 @@ fi
 
 # Expand installation directories
 stripdir prefix
-for i in exec_prefix dynlibdir libexecdir bindir libdir includedir sysdeps sproot ; do
+for i in exec_prefix dynlibdir libexecdir bindir libdir includedir pkgconfdir sysdeps sproot  ; do
   eval tmp=\${$i}
   eval $i=$tmp
   stripdir $i
 done
 
-# Get usable temp filenames
-i=0
-set -C
-while : ; do
-  i=$(($i+1))
-  tmpc="./tmp-configure-$$-$PPID-$i.c"
-  tmpo="./tmp-configure-$$-$PPID-$i.o"
-  tmpe="./tmp-configure-$$-$PPID-$i.tmp"
-  2>|/dev/null > "$tmpc" && break
-  2>|/dev/null > "$tmpo" && break
-  2>|/dev/null > "$tmpe" && break
-  test "$i" -gt 50 && fail "$0: cannot create temporary files"
-done
-set +C
-trap 'rm -f "$tmpc" "$tmpo" "$tmpe"' EXIT ABRT INT QUIT TERM HUP
+# Process deps-build
+if test -n "$pkgconf" || $pcw || $slashpackage ; then
+  oldifs="$IFS"
+  while IFS=" 	" read cond usedinlibs pkg ver libs ; do
+    IFS="$oldifs"
+    eval "cond=$cond; usedinlibs=$usedinlibs"
+    if $cond ; then
+      if test -n "$pkgconf" ; then
+        for lib in $libs ; do
+          if ! $pkgconf --atleast-version=${ver} --print-errors -- "$lib" ; then
+            echo "./configure: fatal: $pkgconf --atleast-version=${ver} --print-errors -- $lib failed" 1>&2
+            exit 1
+          fi
+          thisinc="`$pkgconf --cflags-only-I -- $lib`"
+          sldflags="`$pkgconf --libs-only-L --static -- $lib`"
+          dldflags="`$pkgconf --libs-only-L -- $lib`"
+          addincpath="${addincpath}${thisinc:+ }$thisinc"
+          addlibspath="${addlibspath}${sldflags:+ }$sldflags"
+          addlibdpath="${addlibdpath}${dldflags:+ }$dldflags"
+          for i in $sldflags ; do
+            vpaths="$vpaths ${i##-L}"
+          done
+          for i in $dldflags ; do
+            vpathd="$vpathd ${i##-L}"
+          done
+          if $usedinlibs ; then
+            depincpath="${depincpath}${thisinc:+ }$thisinc"
+            deplibpath="${deplibpath}${sldflags:+ }$sldflags"
+          fi
+        done
+      fi
+      if $slashpackage ; then
+        addincpath="$addincpath -I${DESTDIR}${sproot}${pkg}/include"
+        vpaths="$vpaths ${DESTDIR}${sproot}${pkg}/library"
+        addlibspath="$addlibspath -L${DESTDIR}${sproot}${pkg}/library"
+        vpathd="$vpathd ${DESTDIR}${sproot}${pkg}/library.so"
+        addlibdpath="$addlibdpath -L${DESTDIR}${sproot}${pkg}/library.so"
+        if $usedinlibs ; then
+          depincpath="$depincpath -I${DESTDIR}${sproot}${pkg}/include"
+          deplibpath="$deplibpath -L${DESTDIR}${sproot}${pkg}/library"
+        fi
+      fi
+    fi
+  done < package/deps-build
+  IFS="$oldifs"
+fi
 
-# Set slashpackage values
+# Other slashpackage values
 if $slashpackage ; then
   home=${sproot}/package/${category}/${package}-${version}
   exthome=${sproot}/package/${category}/${package}
@@ -248,22 +299,26 @@ if $slashpackage ; then
   libdir=${home}/library
   libexecdir=$bindir
   includedir=${home}/include
-  while read dep condvar ; do
-    if test -n "$condvar" ; then
-      eval "cond=$condvar"
-    else
-      cond=true
-    fi
-    if $cond ; then
-      addincpath="$addincpath -I${DESTDIR}${sproot}${dep}/include"
-      vpaths="$vpaths ${DESTDIR}${sproot}${dep}/library"
-      addlibspath="$addlibspath -L${DESTDIR}${sproot}${dep}/library"
-      vpathd="$vpathd ${DESTDIR}${sproot}${dep}/library.so"
-      addlibdpath="$addlibdpath -L${DESTDIR}${sproot}${dep}/library.so"
-    fi
-  done < package/deps-build
+  pkgconfdir=${home}/pkgconfig
+
 fi
 
+# Get usable temp filenames
+i=0
+set -C
+while : ; do
+  i=$(($i+1))
+  tmpc="./tmp-configure-$$-$PPID-$i.c"
+  tmpo="./tmp-configure-$$-$PPID-$i.o"
+  tmpe="./tmp-configure-$$-$PPID-$i.tmp"
+  2>|/dev/null > "$tmpc" && break
+  2>|/dev/null > "$tmpo" && break
+  2>|/dev/null > "$tmpe" && break
+  test "$i" -gt 50 && fail "$0: cannot create temporary files"
+done
+set +C
+trap 'rm -f "$tmpc" "$tmpo" "$tmpe"' EXIT ABRT INT QUIT TERM HUP
+
 # Find a C compiler to use
 if test -n "$target" && test x${build} != x${target} ; then
   cross=${target}-
@@ -320,15 +375,15 @@ if [ "x$target" != "x$(cat $sysdeps/target)" ] ; then
   exit 1
 fi
 
+if $allpic ; then
+  tryflag CPPFLAGS_AUTO -fPIC
+fi
 spawn_lib=$(cat $sysdeps/spawn.lib)
 socket_lib=$(cat $sysdeps/socket.lib)
 sysclock_lib=$(cat $sysdeps/sysclock.lib)
 timer_lib=$(cat $sysdeps/timer.lib)
 util_lib=$(cat $sysdeps/util.lib)
 
-if $allpic ; then
-  tryflag CPPFLAGS_AUTO -fPIC
-fi
 tryflag CFLAGS_AUTO -std=c99
 tryflag CFLAGS -fomit-frame-pointer
 tryflag CFLAGS_AUTO -fno-exceptions
@@ -363,6 +418,8 @@ else
   LDFLAGS_NOSHARED="${LDFLAGS_NOSHARED}${addlibdpath}"
 fi
 
+
+
 echo "Creating config.mak..."
 cmdline=$(quote "$0")
 for i ; do cmdline="$cmdline $(quote "$i")" ; done
@@ -381,12 +438,15 @@ libexecdir := $libexecdir
 bindir := $bindir
 libdir := $libdir
 includedir := $includedir
+pkgconfdir := $pkgconfdir
 sysdeps := $sysdeps
 slashpackage := $slashpackage
 sproot := $sproot
 version := $version
 home := $home
 exthome := $exthome
+extra_includedirs :=$depincpath
+extra_libdirs :=$deplibpath
 SPAWN_LIB := ${spawn_lib}
 SOCKET_LIB := ${socket_lib}
 SYSCLOCK_LIB := ${sysclock_lib}
@@ -395,23 +455,25 @@ UTIL_LIB := ${util_lib}
 
 CC := $CC_AUTO
 CPPFLAGS_AUTO := $CPPFLAGS_AUTO
-CPPFLAGS := $CPPFLAGS $CPPFLAGS_POST
+CPPFLAGS := ${CPPFLAGS}${CPPFLAGS_POST:+ }$CPPFLAGS_POST
 CFLAGS_AUTO := $CFLAGS_AUTO
-CFLAGS := $CFLAGS $CFLAGS_POST
+CFLAGS := ${CFLAGS}${CFLAGS_POST:+ }$CFLAGS_POST
 LDFLAGS_AUTO := $LDFLAGS_AUTO
-LDFLAGS := $LDFLAGS $LDFLAGS_POST
+LDFLAGS := ${LDFLAGS}${LDFLAGS_POST:+ }$LDFLAGS_POST
 LDFLAGS_SHARED := $LDFLAGS_SHARED
 LDFLAGS_NOSHARED := $LDFLAGS_NOSHARED
 CROSS_COMPILE := $cross
 
 vpath lib%.a$vpaths
 vpath lib%.so$vpathd
+
 EOF
 if $allstatic ; then
   echo ".LIBPATTERNS := lib%.a"
   echo "DO_ALLSTATIC := 1"
 else
   echo ".LIBPATTERNS := lib%.so"
+  echo "DO_ALLSTATIC :="
 fi
 if $static ; then
   echo "DO_STATIC := 1"
@@ -423,6 +485,11 @@ if $shared ; then
 else
   echo "DO_SHARED :="
 fi
+if $pcw ; then
+  echo "DO_PKGCONFIG := 1"
+else
+  echo "DO_PKGCONFIG :="
+fi
 if $allpic ; then
   echo "STATIC_LIBS_ARE_PIC := 1"
 else
@@ -448,15 +515,19 @@ EOF
 if $slashpackage ; then
   echo "#define ${package_macro_name}_BINPREFIX \"$bindir/\""
   echo "#define ${package_macro_name}_EXTBINPREFIX \"$extbinprefix/\""
+  echo "#define ${package_macro_name}_EXTLIBEXECPREFIX \"$extbinprefix/\""
 elif $abspath ; then
   echo "#define ${package_macro_name}_BINPREFIX \"$bindir/\""
   echo "#define ${package_macro_name}_EXTBINPREFIX \"$bindir/\""
+  echo "#define ${package_macro_name}_EXTLIBEXECPREFIX \"$libexecdir/\""
 else
   echo "#define ${package_macro_name}_BINPREFIX \"\""
   echo "#define ${package_macro_name}_EXTBINPREFIX \"\""
+  echo "#define ${package_macro_name}_EXTLIBEXECPREFIX \"$libexecdir/\""
 fi
 echo "#define ${package_macro_name}_LIBEXECPREFIX \"$libexecdir/\""
+
 echo
 echo "#endif"
 exec 1>&3 3>&-
-echo "  ... done."
+echo "  ... done."
\ No newline at end of file
diff --git a/doc/index.html b/doc/index.html
index 99180d0..66712a0 100644
--- a/doc/index.html
+++ b/doc/index.html
@@ -72,7 +72,7 @@ requirement if you link against the shared version of the skalibs library. </li>
 <h3> Download </h3>
 
 <ul>
- <li> The current released version of s6-dns is <a href="s6-dns-2.4.0.1.tar.gz">2.4.0.1</a>. </li>
+ <li> The current released version of s6-dns is <a href="s6-dns-2.4.1.0.tar.gz">2.4.1.0</a>. </li>
  <li> Alternatively, you can checkout a copy of the
 <a href="//git.skarnet.org/cgi-bin/cgit.cgi/s6-dns/">s6-dns
 git repository</a>:
diff --git a/doc/upgrade.html b/doc/upgrade.html
index 012c044..ec765d7 100644
--- a/doc/upgrade.html
+++ b/doc/upgrade.html
@@ -18,7 +18,7 @@
 
 <h1> What has changed in s6-dns </h1>
 
-<h2> in 2.4.0.1 </h2>
+<h2> in 2.4.1.0 </h2>
 
 <ul>
  <li> <a href="//skarnet.org/software/skalibs/">skalibs</a>
diff --git a/package/configure-snippets/configure_case_lines b/package/configure-snippets/configure_case_lines
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/package/configure-snippets/configure_case_lines
@@ -0,0 +1 @@
+
diff --git a/package/configure-snippets/configure_expand_dirs b/package/configure-snippets/configure_expand_dirs
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/package/configure-snippets/configure_expand_dirs
@@ -0,0 +1 @@
+
diff --git a/package/configure-snippets/configure_extra_checks b/package/configure-snippets/configure_extra_checks
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/package/configure-snippets/configure_extra_checks
@@ -0,0 +1 @@
+
diff --git a/package/configure-snippets/configure_generate_configh b/package/configure-snippets/configure_generate_configh
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/package/configure-snippets/configure_generate_configh
@@ -0,0 +1 @@
+
diff --git a/package/configure-snippets/configure_generate_make b/package/configure-snippets/configure_generate_make
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/package/configure-snippets/configure_generate_make
@@ -0,0 +1 @@
+
diff --git a/package/configure-snippets/configure_help_dependencies b/package/configure-snippets/configure_help_dependencies
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/package/configure-snippets/configure_help_dependencies
@@ -0,0 +1 @@
+
diff --git a/package/configure-snippets/configure_help_install b/package/configure-snippets/configure_help_install
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/package/configure-snippets/configure_help_install
@@ -0,0 +1 @@
+
diff --git a/package/configure-snippets/configure_help_options b/package/configure-snippets/configure_help_options
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/package/configure-snippets/configure_help_options
@@ -0,0 +1 @@
+
diff --git a/package/configure-snippets/configure_init_vars b/package/configure-snippets/configure_init_vars
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/package/configure-snippets/configure_init_vars
@@ -0,0 +1 @@
+
diff --git a/package/configure-snippets/configure_slashpackage_other b/package/configure-snippets/configure_slashpackage_other
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/package/configure-snippets/configure_slashpackage_other
@@ -0,0 +1 @@
+
diff --git a/package/deps-build b/package/deps-build
index 05d5af4..1a04c17 100644
--- a/package/deps-build
+++ b/package/deps-build
@@ -1 +1 @@
-/package/prog/skalibs
+true	true	/package/prog/skalibs	2.14.4.0	libskarnet
diff --git a/package/deps.mak b/package/deps.mak
index 170fd0b..cc77e8b 100644
--- a/package/deps.mak
+++ b/package/deps.mak
@@ -149,53 +149,56 @@ src/skadns/skadns_zero.o src/skadns/skadns_zero.lo: src/skadns/skadns_zero.c src
 src/skadns/skadnsd.o src/skadns/skadnsd.lo: src/skadns/skadnsd.c src/include/s6-dns/s6dns.h src/include/s6-dns/skadns.h
 src/utilities/s6-dns-hosts-compile.o src/utilities/s6-dns-hosts-compile.lo: src/utilities/s6-dns-hosts-compile.c src/include/s6-dns/hosts.h
 
-s6-dnsip: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-s6-dnsip: src/clients/s6-dnsip.o ${LIBS6DNS}
-s6-dnsip4: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-s6-dnsip4: src/clients/s6-dnsip4.o ${LIBS6DNS}
-s6-dnsip4-filter: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB} ${SPAWN_LIB}
-s6-dnsip4-filter: src/clients/s6-dnsip4-filter.o src/clients/s6dns_generic_filter_main.o src/clients/s6dns_namescanner.o ${LIBSKADNS} ${LIBS6DNS}
-s6-dnsip6: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-s6-dnsip6: src/clients/s6-dnsip6.o ${LIBS6DNS}
-s6-dnsip6-filter: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB} ${SPAWN_LIB}
-s6-dnsip6-filter: src/clients/s6-dnsip6-filter.o src/clients/s6dns_generic_filter_main.o src/clients/s6dns_namescanner.o ${LIBSKADNS} ${LIBS6DNS}
-s6-dnsmx: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-s6-dnsmx: src/clients/s6-dnsmx.o ${LIBS6DNS}
-s6-dnsname: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-s6-dnsname: src/clients/s6-dnsname.o ${LIBS6DNS}
-s6-dnsname-filter: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB} ${SPAWN_LIB}
-s6-dnsname-filter: src/clients/s6-dnsname-filter.o src/clients/s6dns_generic_filter_main.o ${LIBSKADNS} ${LIBS6DNS}
-s6-dnsns: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-s6-dnsns: src/clients/s6-dnsns.o ${LIBS6DNS}
-s6-dnsq: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-s6-dnsq: src/clients/s6-dnsq.o ${LIBS6DNS}
-s6-dnsqr: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-s6-dnsqr: src/clients/s6-dnsqr.o ${LIBS6DNS}
-s6-dnsqualify: EXTRA_LIBS := -lskarnet
-s6-dnsqualify: src/clients/s6-dnsqualify.o ${LIBS6DNS}
-s6-dnssoa: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-s6-dnssoa: src/clients/s6-dnssoa.o ${LIBS6DNS}
-s6-dnssrv: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-s6-dnssrv: src/clients/s6-dnssrv.o ${LIBS6DNS}
-s6-dnstxt: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-s6-dnstxt: src/clients/s6-dnstxt.o ${LIBS6DNS}
-s6-randomip: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-s6-randomip: src/clients/s6-randomip.o
+s6-dnsip: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+s6-dnsip: src/clients/s6-dnsip.o ${LIBS6DNS} -lskarnet
+s6-dnsip4: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+s6-dnsip4: src/clients/s6-dnsip4.o ${LIBS6DNS} -lskarnet
+s6-dnsip4-filter: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB} ${SPAWN_LIB}
+s6-dnsip4-filter: src/clients/s6-dnsip4-filter.o src/clients/s6dns_generic_filter_main.o src/clients/s6dns_namescanner.o ${LIBSKADNS} ${LIBS6DNS} -lskarnet
+s6-dnsip6: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+s6-dnsip6: src/clients/s6-dnsip6.o ${LIBS6DNS} -lskarnet
+s6-dnsip6-filter: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB} ${SPAWN_LIB}
+s6-dnsip6-filter: src/clients/s6-dnsip6-filter.o src/clients/s6dns_generic_filter_main.o src/clients/s6dns_namescanner.o ${LIBSKADNS} ${LIBS6DNS} -lskarnet
+s6-dnsmx: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+s6-dnsmx: src/clients/s6-dnsmx.o ${LIBS6DNS} -lskarnet
+s6-dnsname: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+s6-dnsname: src/clients/s6-dnsname.o ${LIBS6DNS} -lskarnet
+s6-dnsname-filter: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB} ${SPAWN_LIB}
+s6-dnsname-filter: src/clients/s6-dnsname-filter.o src/clients/s6dns_generic_filter_main.o ${LIBSKADNS} ${LIBS6DNS} -lskarnet
+s6-dnsns: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+s6-dnsns: src/clients/s6-dnsns.o ${LIBS6DNS} -lskarnet
+s6-dnsq: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+s6-dnsq: src/clients/s6-dnsq.o ${LIBS6DNS} -lskarnet
+s6-dnsqr: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+s6-dnsqr: src/clients/s6-dnsqr.o ${LIBS6DNS} -lskarnet
+s6-dnsqualify: EXTRA_LIBS :=
+s6-dnsqualify: src/clients/s6-dnsqualify.o ${LIBS6DNS} -lskarnet
+s6-dnssoa: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+s6-dnssoa: src/clients/s6-dnssoa.o ${LIBS6DNS} -lskarnet
+s6-dnssrv: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+s6-dnssrv: src/clients/s6-dnssrv.o ${LIBS6DNS} -lskarnet
+s6-dnstxt: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+s6-dnstxt: src/clients/s6-dnstxt.o ${LIBS6DNS} -lskarnet
+s6-randomip: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+s6-randomip: src/clients/s6-randomip.o -lskarnet
 ifeq ($(strip $(STATIC_LIBS_ARE_PIC)),)
 libs6dns.a.xyzzy: src/libs6dns/s6dns_analyze_packet.o src/libs6dns/s6dns_analyze_qtype_parse.o src/libs6dns/s6dns_analyze_record.o src/libs6dns/s6dns_analyze_record_a.o src/libs6dns/s6dns_analyze_record_aaaa.o src/libs6dns/s6dns_analyze_record_caa.o src/libs6dns/s6dns_analyze_record_domain.o src/libs6dns/s6dns_analyze_record_hinfo.o src/libs6dns/s6dns_analyze_record_mx.o src/libs6dns/s6dns_analyze_record_soa.o src/libs6dns/s6dns_analyze_record_srv.o src/libs6dns/s6dns_analyze_record_strings.o src/libs6dns/s6dns_analyze_record_unknown.o src/libs6dns/s6dns_analyze_rtypetable.o src/libs6dns/s6dns_constants_error.o src/libs6dns/s6dns_constants_error_str.o src/libs6dns/s6dns_debug_dumpdt_post_recv.o src/libs6dns/s6dns_debug_dumpdt_post_send.o src/libs6dns/s6dns_debug_dumpdt_pre_send.o src/libs6dns/s6dns_debug_dumpdt_stderr.o src/libs6dns/s6dns_debug_dumpdt_stdout.o src/libs6dns/s6dns_debughook_zero.o src/libs6dns/s6dns_domain_arpafromip4.o src/libs6dns/s6dns_domain_arpafromip6.o src/libs6dns/s6dns_domain_decode.o src/libs6dns/s6dns_domain_encode.o src/libs6dns/s6dns_domain_encodelist.o src/libs6dns/s6dns_domain_fromstring.o src/libs6dns/s6dns_domain_fromstring_noqualify_encode.o src/libs6dns/s6dns_domain_fromstring_qualify_encode.o src/libs6dns/s6dns_domain_noqualify.o src/libs6dns/s6dns_domain_qualify.o src/libs6dns/s6dns_domain_tostring.o src/libs6dns/s6dns_engine.o src/libs6dns/s6dns_engine_free.o src/libs6dns/s6dns_engine_freen.o src/libs6dns/s6dns_engine_here.o src/libs6dns/s6dns_engine_nextdeadline.o src/libs6dns/s6dns_engine_query.o src/libs6dns/s6dns_engine_zero.o src/libs6dns/s6dns_finish.o src/libs6dns/s6dns_fmt_caa.o src/libs6dns/s6dns_fmt_domainlist.o src/libs6dns/s6dns_fmt_hinfo.o src/libs6dns/s6dns_fmt_mx.o src/libs6dns/s6dns_fmt_soa.o src/libs6dns/s6dns_fmt_srv.o src/libs6dns/s6dns_hosts_aaaaa_q.o src/libs6dns/s6dns_hosts_aaaaa_string.o src/libs6dns/s6dns_hosts_compile.o src/libs6dns/s6dns_hosts_here.o src/libs6dns/s6dns_hosts_init.o src/libs6dns/s6dns_hosts_ip_q.o src/libs6dns/s6dns_hosts_ip_string.o src/libs6dns/s6dns_hosts_name.o src/libs6dns/s6dns_init.o src/libs6dns/s6dns_message_counts_next.o src/libs6dns/s6dns_message_counts_pack.o src/libs6dns/s6dns_message_counts_unpack.o src/libs6dns/s6dns_message_counts_zero.o src/libs6dns/s6dns_message_get_caa.o src/libs6dns/s6dns_message_get_domain.o src/libs6dns/s6dns_message_get_domain_nodecode.o src/libs6dns/s6dns_message_get_hinfo.o src/libs6dns/s6dns_message_get_mx.o src/libs6dns/s6dns_message_get_soa.o src/libs6dns/s6dns_message_get_srv.o src/libs6dns/s6dns_message_get_string.o src/libs6dns/s6dns_message_get_string_internal.o src/libs6dns/s6dns_message_get_strings.o src/libs6dns/s6dns_message_header_pack.o src/libs6dns/s6dns_message_header_unpack.o src/libs6dns/s6dns_message_header_zero.o src/libs6dns/s6dns_message_parse.o src/libs6dns/s6dns_message_parse_answer_a.o src/libs6dns/s6dns_message_parse_answer_aaaa.o src/libs6dns/s6dns_message_parse_answer_caa.o src/libs6dns/s6dns_message_parse_answer_domain.o src/libs6dns/s6dns_message_parse_answer_hinfo.o src/libs6dns/s6dns_message_parse_answer_mx.o src/libs6dns/s6dns_message_parse_answer_soa.o src/libs6dns/s6dns_message_parse_answer_srv.o src/libs6dns/s6dns_message_parse_answer_strings.o src/libs6dns/s6dns_message_parse_getrr.o src/libs6dns/s6dns_message_parse_init.o src/libs6dns/s6dns_message_parse_next.o src/libs6dns/s6dns_message_parse_question.o src/libs6dns/s6dns_message_parse_skipqd.o src/libs6dns/s6dns_rci_free.o src/libs6dns/s6dns_rci_here.o src/libs6dns/s6dns_rci_init.o src/libs6dns/s6dns_rci_zero.o src/libs6dns/s6dns_resolve_core.o src/libs6dns/s6dns_resolve_dpag.o src/libs6dns/s6dns_resolve_mpag.o src/libs6dns/s6dns_resolve_name4.o src/libs6dns/s6dns_resolve_name6.o src/libs6dns/s6dns_resolve_parse.o src/libs6dns/s6dns_resolven_loop.o src/libs6dns/s6dns_resolven_parse.o src/libs6dns/s6dns_resolvenoq.o src/libs6dns/s6dns_resolvenoq_aaaaa.o src/libs6dns/s6dns_resolveq.o src/libs6dns/s6dns_resolveq_aaaaa.o
 else
-libs6dns.a.xyzzy: src/libs6dns/s6dns_analyze_packet.lo src/libs6dns/s6dns_analyze_qtype_parse.lo src/libs6dns/s6dns_analyze_record.lo src/libs6dns/s6dns_analyze_record_a.lo src/libs6dns/s6dns_analyze_record_aaaa.lo src/libs6dns/s6dns_analyze_record_caa.lo src/libs6dns/s6dns_analyze_record_domain.lo src/libs6dns/s6dns_analyze_record_hinfo.lo src/libs6dns/s6dns_analyze_record_mx.lo src/libs6dns/s6dns_analyze_record_soa.lo src/libs6dns/s6dns_analyze_record_srv.lo src/libs6dns/s6dns_analyze_record_strings.lo src/libs6dns/s6dns_analyze_record_unknown.lo src/libs6dns/s6dns_analyze_rtypetable.lo src/libs6dns/s6dns_constants_error.lo src/libs6dns/s6dns_constants_error_str.lo src/libs6dns/s6dns_debug_dumpdt_post_recv.lo src/libs6dns/s6dns_debug_dumpdt_post_send.lo src/libs6dns/s6dns_debug_dumpdt_pre_send.lo src/libs6dns/s6dns_debug_dumpdt_stderr.lo src/libs6dns/s6dns_debug_dumpdt_stdout.lo src/libs6dns/s6dns_debughook_zero.lo src/libs6dns/s6dns_domain_arpafromip4.lo src/libs6dns/s6dns_domain_arpafromip6.lo src/libs6dns/s6dns_domain_decode.lo src/libs6dns/s6dns_domain_encode.lo src/libs6dns/s6dns_domain_encodelist.lo src/libs6dns/s6dns_domain_fromstring.lo src/libs6dns/s6dns_domain_fromstring_noqualify_encode.lo src/libs6dns/s6dns_domain_fromstring_qualify_encode.lo src/libs6dns/s6dns_domain_noqualify.lo src/libs6dns/s6dns_domain_qualify.lo src/libs6dns/s6dns_domain_tostring.lo src/libs6dns/s6dns_engine.lo src/libs6dns/s6dns_engine_free.lo src/libs6dns/s6dns_engine_freen.lo src/libs6dns/s6dns_engine_here.lo src/libs6dns/s6dns_engine_nextdeadline.lo src/libs6dns/s6dns_engine_query.lo src/libs6dns/s6dns_engine_zero.lo src/libs6dns/s6dns_finish.lo src/libs6dns/s6dns_fmt_caa.lo src/libs6dns/s6dns_fmt_domainlist.lo src/libs6dns/s6dns_fmt_hinfo.lo src/libs6dns/s6dns_fmt_mx.lo src/libs6dns/s6dns_fmt_soa.lo src/libs6dns/s6dns_fmt_srv.lo src/libs6dns/s6dns_hosts_aaaaa_q.lo src/libs6dns/s6dns_hosts_aaaaa_string.lo src/libs6dns/s6dns_hosts_compile.lo src/libs6dns/s6dns_hosts_here.lo src/libs6dns/s6dns_hosts_init.lo src/libs6dns/s6dns_hosts_ip_q.lo src/libs6dns/s6dns_hosts_ip_string.lo src/libs6dns/s6dns_hosts_name.lo src/libs6dns/s6dns_init.lo src/libs6dns/s6dns_message_counts_next.lo src/libs6dns/s6dns_message_counts_pack.lo src/libs6dns/s6dns_message_counts_unpack.lo src/libs6dns/s6dns_message_counts_zero.lo src/libs6dns/s6dns_message_get_caa.lo src/libs6dns/s6dns_message_get_domain.lo src/libs6dns/s6dns_message_get_domain_nodecode.lo src/libs6dns/s6dns_message_get_hinfo.lo src/libs6dns/s6dns_message_get_mx.lo src/libs6dns/s6dns_message_get_soa.lo src/libs6dns/s6dns_message_get_srv.lo src/libs6dns/s6dns_message_get_string.lo src/libs6dns/s6dns_message_get_string_internal.lo src/libs6dns/s6dns_message_get_strings.lo src/libs6dns/s6dns_message_header_pack.lo src/libs6dns/s6dns_message_header_unpack.lo src/libs6dns/s6dns_message_header_zero.lo src/libs6dns/s6dns_message_parse.lo src/libs6dns/s6dns_message_parse_answer_a.lo src/libs6dns/s6dns_message_parse_answer_aaaa.lo src/libs6dns/s6dns_message_parse_answer_caa.lo src/libs6dns/s6dns_message_parse_answer_domain.lo src/libs6dns/s6dns_message_parse_answer_hinfo.lo src/libs6dns/s6dns_message_parse_answer_mx.lo src/libs6dns/s6dns_message_parse_answer_soa.lo src/libs6dns/s6dns_message_parse_answer_srv.lo src/libs6dns/s6dns_message_parse_answer_strings.lo src/libs6dns/s6dns_message_parse_getrr.lo src/libs6dns/s6dns_message_parse_init.lo src/libs6dns/s6dns_message_parse_next.lo src/libs6dns/s6dns_message_parse_question.lo src/libs6dns/s6dns_message_parse_skipqd.lo src/libs6dns/s6dns_rci_free.lo src/libs6dns/s6dns_rci_here.lo src/libs6dns/s6dns_rci_init.lo src/libs6dns/s6dns_rci_zero.lo src/libs6dns/s6dns_resolve_core.lo src/libs6dns/s6dns_resolve_dpag.lo src/libs6dns/s6dns_resolve_mpag.lo src/libs6dns/s6dns_resolve_name4.lo src/libs6dns/s6dns_resolve_name6.lo src/libs6dns/s6dns_resolve_parse.lo src/libs6dns/s6dns_resolven_loop.lo src/libs6dns/s6dns_resolven_parse.lo src/libs6dns/s6dns_resolvenoq.lo src/libs6dns/s6dns_resolvenoq_aaaaa.lo src/libs6dns/s6dns_resolveq.lo src/libs6dns/s6dns_resolveq_aaaaa.lo
+libs6dns.a.xyzzy:src/libs6dns/s6dns_analyze_packet.lo src/libs6dns/s6dns_analyze_qtype_parse.lo src/libs6dns/s6dns_analyze_record.lo src/libs6dns/s6dns_analyze_record_a.lo src/libs6dns/s6dns_analyze_record_aaaa.lo src/libs6dns/s6dns_analyze_record_caa.lo src/libs6dns/s6dns_analyze_record_domain.lo src/libs6dns/s6dns_analyze_record_hinfo.lo src/libs6dns/s6dns_analyze_record_mx.lo src/libs6dns/s6dns_analyze_record_soa.lo src/libs6dns/s6dns_analyze_record_srv.lo src/libs6dns/s6dns_analyze_record_strings.lo src/libs6dns/s6dns_analyze_record_unknown.lo src/libs6dns/s6dns_analyze_rtypetable.lo src/libs6dns/s6dns_constants_error.lo src/libs6dns/s6dns_constants_error_str.lo src/libs6dns/s6dns_debug_dumpdt_post_recv.lo src/libs6dns/s6dns_debug_dumpdt_post_send.lo src/libs6dns/s6dns_debug_dumpdt_pre_send.lo src/libs6dns/s6dns_debug_dumpdt_stderr.lo src/libs6dns/s6dns_debug_dumpdt_stdout.lo src/libs6dns/s6dns_debughook_zero.lo src/libs6dns/s6dns_domain_arpafromip4.lo src/libs6dns/s6dns_domain_arpafromip6.lo src/libs6dns/s6dns_domain_decode.lo src/libs6dns/s6dns_domain_encode.lo src/libs6dns/s6dns_domain_encodelist.lo src/libs6dns/s6dns_domain_fromstring.lo src/libs6dns/s6dns_domain_fromstring_noqualify_encode.lo src/libs6dns/s6dns_domain_fromstring_qualify_encode.lo src/libs6dns/s6dns_domain_noqualify.lo src/libs6dns/s6dns_domain_qualify.lo src/libs6dns/s6dns_domain_tostring.lo src/libs6dns/s6dns_engine.lo src/libs6dns/s6dns_engine_free.lo src/libs6dns/s6dns_engine_freen.lo src/libs6dns/s6dns_engine_here.lo src/libs6dns/s6dns_engine_nextdeadline.lo src/libs6dns/s6dns_engine_query.lo src/libs6dns/s6dns_engine_zero.lo src/libs6dns/s6dns_finish.lo src/libs6dns/s6dns_fmt_caa.lo src/libs6dns/s6dns_fmt_domainlist.lo src/libs6dns/s6dns_fmt_hinfo.lo src/libs6dns/s6dns_fmt_mx.lo src/libs6dns/s6dns_fmt_soa.lo src/libs6dns/s6dns_fmt_srv.lo src/libs6dns/s6dns_hosts_aaaaa_q.lo src/libs6dns/s6dns_hosts_aaaaa_string.lo src/libs6dns/s6dns_hosts_compile.lo src/libs6dns/s6dns_hosts_here.lo src/libs6dns/s6dns_hosts_init.lo src/libs6dns/s6dns_hosts_ip_q.lo src/libs6dns/s6dns_hosts_ip_string.lo src/libs6dns/s6dns_hosts_name.lo src/libs6dns/s6dns_init.lo src/libs6dns/s6dns_message_counts_next.lo src/libs6dns/s6dns_message_counts_pack.lo src/libs6dns/s6dns_message_counts_unpack.lo src/libs6dns/s6dns_message_counts_zero.lo src/libs6dns/s6dns_message_get_caa.lo src/libs6dns/s6dns_message_get_domain.lo src/libs6dns/s6dns_message_get_domain_nodecode.lo src/libs6dns/s6dns_message_get_hinfo.lo src/libs6dns/s6dns_message_get_mx.lo src/libs6dns/s6dns_message_get_soa.lo src/libs6dns/s6dns_message_get_srv.lo src/libs6dns/s6dns_message_get_string.lo src/libs6dns/s6dns_message_get_string_internal.lo src/libs6dns/s6dns_message_get_strings.lo src/libs6dns/s6dns_message_header_pack.lo src/libs6dns/s6dns_message_header_unpack.lo src/libs6dns/s6dns_message_header_zero.lo src/libs6dns/s6dns_message_parse.lo src/libs6dns/s6dns_message_parse_answer_a.lo src/libs6dns/s6dns_message_parse_answer_aaaa.lo src/libs6dns/s6dns_message_parse_answer_caa.lo src/libs6dns/s6dns_message_parse_answer_domain.lo src/libs6dns/s6dns_message_parse_answer_hinfo.lo src/libs6dns/s6dns_message_parse_answer_mx.lo src/libs6dns/s6dns_message_parse_answer_soa.lo src/libs6dns/s6dns_message_parse_answer_srv.lo src/libs6dns/s6dns_message_parse_answer_strings.lo src/libs6dns/s6dns_message_parse_getrr.lo src/libs6dns/s6dns_message_parse_init.lo src/libs6dns/s6dns_message_parse_next.lo src/libs6dns/s6dns_message_parse_question.lo src/libs6dns/s6dns_message_parse_skipqd.lo src/libs6dns/s6dns_rci_free.lo src/libs6dns/s6dns_rci_here.lo src/libs6dns/s6dns_rci_init.lo src/libs6dns/s6dns_rci_zero.lo src/libs6dns/s6dns_resolve_core.lo src/libs6dns/s6dns_resolve_dpag.lo src/libs6dns/s6dns_resolve_mpag.lo src/libs6dns/s6dns_resolve_name4.lo src/libs6dns/s6dns_resolve_name6.lo src/libs6dns/s6dns_resolve_parse.lo src/libs6dns/s6dns_resolven_loop.lo src/libs6dns/s6dns_resolven_parse.lo src/libs6dns/s6dns_resolvenoq.lo src/libs6dns/s6dns_resolvenoq_aaaaa.lo src/libs6dns/s6dns_resolveq.lo src/libs6dns/s6dns_resolveq_aaaaa.lo
 endif
+libs6dns.pc: EXTRA_LIBS := -lskarnet
 libs6dns.so.xyzzy: EXTRA_LIBS := -lskarnet
-libs6dns.so.xyzzy: src/libs6dns/s6dns_analyze_packet.lo src/libs6dns/s6dns_analyze_qtype_parse.lo src/libs6dns/s6dns_analyze_record.lo src/libs6dns/s6dns_analyze_record_a.lo src/libs6dns/s6dns_analyze_record_aaaa.lo src/libs6dns/s6dns_analyze_record_caa.lo src/libs6dns/s6dns_analyze_record_domain.lo src/libs6dns/s6dns_analyze_record_hinfo.lo src/libs6dns/s6dns_analyze_record_mx.lo src/libs6dns/s6dns_analyze_record_soa.lo src/libs6dns/s6dns_analyze_record_srv.lo src/libs6dns/s6dns_analyze_record_strings.lo src/libs6dns/s6dns_analyze_record_unknown.lo src/libs6dns/s6dns_analyze_rtypetable.lo src/libs6dns/s6dns_constants_error.lo src/libs6dns/s6dns_constants_error_str.lo src/libs6dns/s6dns_debug_dumpdt_post_recv.lo src/libs6dns/s6dns_debug_dumpdt_post_send.lo src/libs6dns/s6dns_debug_dumpdt_pre_send.lo src/libs6dns/s6dns_debug_dumpdt_stderr.lo src/libs6dns/s6dns_debug_dumpdt_stdout.lo src/libs6dns/s6dns_debughook_zero.lo src/libs6dns/s6dns_domain_arpafromip4.lo src/libs6dns/s6dns_domain_arpafromip6.lo src/libs6dns/s6dns_domain_decode.lo src/libs6dns/s6dns_domain_encode.lo src/libs6dns/s6dns_domain_encodelist.lo src/libs6dns/s6dns_domain_fromstring.lo src/libs6dns/s6dns_domain_fromstring_noqualify_encode.lo src/libs6dns/s6dns_domain_fromstring_qualify_encode.lo src/libs6dns/s6dns_domain_noqualify.lo src/libs6dns/s6dns_domain_qualify.lo src/libs6dns/s6dns_domain_tostring.lo src/libs6dns/s6dns_engine.lo src/libs6dns/s6dns_engine_free.lo src/libs6dns/s6dns_engine_freen.lo src/libs6dns/s6dns_engine_here.lo src/libs6dns/s6dns_engine_nextdeadline.lo src/libs6dns/s6dns_engine_query.lo src/libs6dns/s6dns_engine_zero.lo src/libs6dns/s6dns_finish.lo src/libs6dns/s6dns_fmt_caa.lo src/libs6dns/s6dns_fmt_domainlist.lo src/libs6dns/s6dns_fmt_hinfo.lo src/libs6dns/s6dns_fmt_mx.lo src/libs6dns/s6dns_fmt_soa.lo src/libs6dns/s6dns_fmt_srv.lo src/libs6dns/s6dns_hosts_aaaaa_q.lo src/libs6dns/s6dns_hosts_aaaaa_string.lo src/libs6dns/s6dns_hosts_compile.lo src/libs6dns/s6dns_hosts_here.lo src/libs6dns/s6dns_hosts_init.lo src/libs6dns/s6dns_hosts_ip_q.lo src/libs6dns/s6dns_hosts_ip_string.lo src/libs6dns/s6dns_hosts_name.lo src/libs6dns/s6dns_init.lo src/libs6dns/s6dns_message_counts_next.lo src/libs6dns/s6dns_message_counts_pack.lo src/libs6dns/s6dns_message_counts_unpack.lo src/libs6dns/s6dns_message_counts_zero.lo src/libs6dns/s6dns_message_get_caa.lo src/libs6dns/s6dns_message_get_domain.lo src/libs6dns/s6dns_message_get_domain_nodecode.lo src/libs6dns/s6dns_message_get_hinfo.lo src/libs6dns/s6dns_message_get_mx.lo src/libs6dns/s6dns_message_get_soa.lo src/libs6dns/s6dns_message_get_srv.lo src/libs6dns/s6dns_message_get_string.lo src/libs6dns/s6dns_message_get_string_internal.lo src/libs6dns/s6dns_message_get_strings.lo src/libs6dns/s6dns_message_header_pack.lo src/libs6dns/s6dns_message_header_unpack.lo src/libs6dns/s6dns_message_header_zero.lo src/libs6dns/s6dns_message_parse.lo src/libs6dns/s6dns_message_parse_answer_a.lo src/libs6dns/s6dns_message_parse_answer_aaaa.lo src/libs6dns/s6dns_message_parse_answer_caa.lo src/libs6dns/s6dns_message_parse_answer_domain.lo src/libs6dns/s6dns_message_parse_answer_hinfo.lo src/libs6dns/s6dns_message_parse_answer_mx.lo src/libs6dns/s6dns_message_parse_answer_soa.lo src/libs6dns/s6dns_message_parse_answer_srv.lo src/libs6dns/s6dns_message_parse_answer_strings.lo src/libs6dns/s6dns_message_parse_getrr.lo src/libs6dns/s6dns_message_parse_init.lo src/libs6dns/s6dns_message_parse_next.lo src/libs6dns/s6dns_message_parse_question.lo src/libs6dns/s6dns_message_parse_skipqd.lo src/libs6dns/s6dns_rci_free.lo src/libs6dns/s6dns_rci_here.lo src/libs6dns/s6dns_rci_init.lo src/libs6dns/s6dns_rci_zero.lo src/libs6dns/s6dns_resolve_core.lo src/libs6dns/s6dns_resolve_dpag.lo src/libs6dns/s6dns_resolve_mpag.lo src/libs6dns/s6dns_resolve_name4.lo src/libs6dns/s6dns_resolve_name6.lo src/libs6dns/s6dns_resolve_parse.lo src/libs6dns/s6dns_resolven_loop.lo src/libs6dns/s6dns_resolven_parse.lo src/libs6dns/s6dns_resolvenoq.lo src/libs6dns/s6dns_resolvenoq_aaaaa.lo src/libs6dns/s6dns_resolveq.lo src/libs6dns/s6dns_resolveq_aaaaa.lo
+libs6dns.so.xyzzy:src/libs6dns/s6dns_analyze_packet.lo src/libs6dns/s6dns_analyze_qtype_parse.lo src/libs6dns/s6dns_analyze_record.lo src/libs6dns/s6dns_analyze_record_a.lo src/libs6dns/s6dns_analyze_record_aaaa.lo src/libs6dns/s6dns_analyze_record_caa.lo src/libs6dns/s6dns_analyze_record_domain.lo src/libs6dns/s6dns_analyze_record_hinfo.lo src/libs6dns/s6dns_analyze_record_mx.lo src/libs6dns/s6dns_analyze_record_soa.lo src/libs6dns/s6dns_analyze_record_srv.lo src/libs6dns/s6dns_analyze_record_strings.lo src/libs6dns/s6dns_analyze_record_unknown.lo src/libs6dns/s6dns_analyze_rtypetable.lo src/libs6dns/s6dns_constants_error.lo src/libs6dns/s6dns_constants_error_str.lo src/libs6dns/s6dns_debug_dumpdt_post_recv.lo src/libs6dns/s6dns_debug_dumpdt_post_send.lo src/libs6dns/s6dns_debug_dumpdt_pre_send.lo src/libs6dns/s6dns_debug_dumpdt_stderr.lo src/libs6dns/s6dns_debug_dumpdt_stdout.lo src/libs6dns/s6dns_debughook_zero.lo src/libs6dns/s6dns_domain_arpafromip4.lo src/libs6dns/s6dns_domain_arpafromip6.lo src/libs6dns/s6dns_domain_decode.lo src/libs6dns/s6dns_domain_encode.lo src/libs6dns/s6dns_domain_encodelist.lo src/libs6dns/s6dns_domain_fromstring.lo src/libs6dns/s6dns_domain_fromstring_noqualify_encode.lo src/libs6dns/s6dns_domain_fromstring_qualify_encode.lo src/libs6dns/s6dns_domain_noqualify.lo src/libs6dns/s6dns_domain_qualify.lo src/libs6dns/s6dns_domain_tostring.lo src/libs6dns/s6dns_engine.lo src/libs6dns/s6dns_engine_free.lo src/libs6dns/s6dns_engine_freen.lo src/libs6dns/s6dns_engine_here.lo src/libs6dns/s6dns_engine_nextdeadline.lo src/libs6dns/s6dns_engine_query.lo src/libs6dns/s6dns_engine_zero.lo src/libs6dns/s6dns_finish.lo src/libs6dns/s6dns_fmt_caa.lo src/libs6dns/s6dns_fmt_domainlist.lo src/libs6dns/s6dns_fmt_hinfo.lo src/libs6dns/s6dns_fmt_mx.lo src/libs6dns/s6dns_fmt_soa.lo src/libs6dns/s6dns_fmt_srv.lo src/libs6dns/s6dns_hosts_aaaaa_q.lo src/libs6dns/s6dns_hosts_aaaaa_string.lo src/libs6dns/s6dns_hosts_compile.lo src/libs6dns/s6dns_hosts_here.lo src/libs6dns/s6dns_hosts_init.lo src/libs6dns/s6dns_hosts_ip_q.lo src/libs6dns/s6dns_hosts_ip_string.lo src/libs6dns/s6dns_hosts_name.lo src/libs6dns/s6dns_init.lo src/libs6dns/s6dns_message_counts_next.lo src/libs6dns/s6dns_message_counts_pack.lo src/libs6dns/s6dns_message_counts_unpack.lo src/libs6dns/s6dns_message_counts_zero.lo src/libs6dns/s6dns_message_get_caa.lo src/libs6dns/s6dns_message_get_domain.lo src/libs6dns/s6dns_message_get_domain_nodecode.lo src/libs6dns/s6dns_message_get_hinfo.lo src/libs6dns/s6dns_message_get_mx.lo src/libs6dns/s6dns_message_get_soa.lo src/libs6dns/s6dns_message_get_srv.lo src/libs6dns/s6dns_message_get_string.lo src/libs6dns/s6dns_message_get_string_internal.lo src/libs6dns/s6dns_message_get_strings.lo src/libs6dns/s6dns_message_header_pack.lo src/libs6dns/s6dns_message_header_unpack.lo src/libs6dns/s6dns_message_header_zero.lo src/libs6dns/s6dns_message_parse.lo src/libs6dns/s6dns_message_parse_answer_a.lo src/libs6dns/s6dns_message_parse_answer_aaaa.lo src/libs6dns/s6dns_message_parse_answer_caa.lo src/libs6dns/s6dns_message_parse_answer_domain.lo src/libs6dns/s6dns_message_parse_answer_hinfo.lo src/libs6dns/s6dns_message_parse_answer_mx.lo src/libs6dns/s6dns_message_parse_answer_soa.lo src/libs6dns/s6dns_message_parse_answer_srv.lo src/libs6dns/s6dns_message_parse_answer_strings.lo src/libs6dns/s6dns_message_parse_getrr.lo src/libs6dns/s6dns_message_parse_init.lo src/libs6dns/s6dns_message_parse_next.lo src/libs6dns/s6dns_message_parse_question.lo src/libs6dns/s6dns_message_parse_skipqd.lo src/libs6dns/s6dns_rci_free.lo src/libs6dns/s6dns_rci_here.lo src/libs6dns/s6dns_rci_init.lo src/libs6dns/s6dns_rci_zero.lo src/libs6dns/s6dns_resolve_core.lo src/libs6dns/s6dns_resolve_dpag.lo src/libs6dns/s6dns_resolve_mpag.lo src/libs6dns/s6dns_resolve_name4.lo src/libs6dns/s6dns_resolve_name6.lo src/libs6dns/s6dns_resolve_parse.lo src/libs6dns/s6dns_resolven_loop.lo src/libs6dns/s6dns_resolven_parse.lo src/libs6dns/s6dns_resolvenoq.lo src/libs6dns/s6dns_resolvenoq_aaaaa.lo src/libs6dns/s6dns_resolveq.lo src/libs6dns/s6dns_resolveq_aaaaa.lo
 ifeq ($(strip $(STATIC_LIBS_ARE_PIC)),)
 libskadns.a.xyzzy: src/skadns/skadns_cancel.o src/skadns/skadns_end.o src/skadns/skadns_packet.o src/skadns/skadns_packetlen.o src/skadns/skadns_release.o src/skadns/skadns_send.o src/skadns/skadns_start.o src/skadns/skadns_startf.o src/skadns/skadns_update.o src/skadns/skadns_zero.o
 else
-libskadns.a.xyzzy: src/skadns/skadns_cancel.lo src/skadns/skadns_end.lo src/skadns/skadns_packet.lo src/skadns/skadns_packetlen.lo src/skadns/skadns_release.lo src/skadns/skadns_send.lo src/skadns/skadns_start.lo src/skadns/skadns_startf.lo src/skadns/skadns_update.lo src/skadns/skadns_zero.lo
+libskadns.a.xyzzy:src/skadns/skadns_cancel.lo src/skadns/skadns_end.lo src/skadns/skadns_packet.lo src/skadns/skadns_packetlen.lo src/skadns/skadns_release.lo src/skadns/skadns_send.lo src/skadns/skadns_start.lo src/skadns/skadns_startf.lo src/skadns/skadns_update.lo src/skadns/skadns_zero.lo
 endif
+libskadns.pc: EXTRA_LIBS := -lskarnet
 libskadns.so.xyzzy: EXTRA_LIBS := -lskarnet
-libskadns.so.xyzzy: src/skadns/skadns_cancel.lo src/skadns/skadns_end.lo src/skadns/skadns_packet.lo src/skadns/skadns_packetlen.lo src/skadns/skadns_release.lo src/skadns/skadns_send.lo src/skadns/skadns_start.lo src/skadns/skadns_startf.lo src/skadns/skadns_update.lo src/skadns/skadns_zero.lo
-skadnsd: EXTRA_LIBS := -lskarnet ${SOCKET_LIB} ${SYSCLOCK_LIB}
-skadnsd: src/skadns/skadnsd.o ${LIBS6DNS}
-s6-dns-hosts-compile: EXTRA_LIBS := -lskarnet
-s6-dns-hosts-compile: src/utilities/s6-dns-hosts-compile.o ${LIBS6DNS}
+libskadns.so.xyzzy:src/skadns/skadns_cancel.lo src/skadns/skadns_end.lo src/skadns/skadns_packet.lo src/skadns/skadns_packetlen.lo src/skadns/skadns_release.lo src/skadns/skadns_send.lo src/skadns/skadns_start.lo src/skadns/skadns_startf.lo src/skadns/skadns_update.lo src/skadns/skadns_zero.lo
+skadnsd: EXTRA_LIBS := ${SOCKET_LIB} ${SYSCLOCK_LIB}
+skadnsd: src/skadns/skadnsd.o ${LIBS6DNS} -lskarnet
+s6-dns-hosts-compile: EXTRA_LIBS :=
+s6-dns-hosts-compile: src/utilities/s6-dns-hosts-compile.o ${LIBS6DNS} -lskarnet
+INTERNAL_LIBS :=
diff --git a/package/info b/package/info
index 3be8a23..21d832c 100644
--- a/package/info
+++ b/package/info
@@ -1,4 +1,4 @@
 package=s6-dns
-version=2.4.0.1
+version=2.4.1.0
 category=web
 package_macro_name=S6_DNS
diff --git a/package/targets.mak b/package/targets.mak
index f735727..996b9f4 100644
--- a/package/targets.mak
+++ b/package/targets.mak
@@ -21,3 +21,5 @@ s6-dns-hosts-compile
 LIBEXEC_TARGETS :=
 
 LIB_DEFS := S6DNS=s6dns SKADNS=skadns
+S6DNS_DESCRIPTION := A client library for DNS resolution
+SKADNS_DESCRIPTION := A client library for asynchronous DNS resolution
diff --git a/tools/configure.template b/tools/configure.template
new file mode 100755
index 0000000..f9faa60
--- /dev/null
+++ b/tools/configure.template
@@ -0,0 +1,533 @@
+#!/bin/sh
+
+cd `dirname "$0"`
+. package/info
+
+usage () {
+cat <<EOF
+Usage: $0 [OPTION]... [TARGET]
+
+Defaults for the options are specified in brackets.
+
+System types:
+  --target=TARGET               configure to run on target TARGET [detected]
+  --host=TARGET                 same as --target
+
+Installation directories:
+  --prefix=PREFIX               main installation prefix [/]
+  --exec-prefix=EPREFIX         installation prefix for executable files [PREFIX]
+
+Fine tuning of the installation directories:
+  --dynlibdir=DIR               shared library files [PREFIX/lib]
+  --bindir=BINDIR               user executables [EPREFIX/bin]
+  --libexecdir=DIR              package-scoped executables [EPREFIX/libexec]
+  --libdir=DIR                  static library files [PREFIX/lib]
+  --includedir=DIR              C header files [PREFIX/include]
+  --pkgconfdir=DIR              pkg-config .pc files [PREFIX/lib/pkgconfig]
+${configure_help_install}
+ If no --prefix option is given, by default libdir (but not dynlibdir) will be
+ /usr/lib, and includedir will be /usr/include.
+
+Dependencies:
+  --with-sysdeps=DIR            use sysdeps in DIR [PREFIX/lib/skalibs/sysdeps]
+  --with-include=DIR            add DIR to the list of searched directories for headers
+  --with-lib=DIR                add DIR to the list of searched directories for static libraries
+  --with-dynlib=DIR             add DIR to the list of searched directories for shared libraries
+  --with-pkgconfig[=PROG]       use pkg-config to look for dependencies
+${configure_help_dependencies}
+ If no --prefix option is given, by default sysdeps will be fetched from
+ /usr/lib/skalibs/sysdeps.
+
+Optional features:
+  --enable-shared               build shared libraries [disabled]
+  --disable-static              do not build static libraries [enabled]
+  --disable-allstatic           do not prefer linking against static libraries [enabled]
+  --enable-static-libc          make entirely static binaries [disabled]
+  --disable-all-pic             do not build executables or static libs as PIC [enabled]
+  --enable-pkgconfig            Build and install .pc files for pkg-config [disabled]
+  --enable-slashpackage[=ROOT]  assume /package installation at ROOT [disabled]
+  --enable-absolute-paths       hardcode absolute BINDIR/foobar paths in binaries [disabled]
+${configure_help_options}
+EOF
+exit 0
+}
+
+# Helper functions
+
+# If your system does not have printf, you can comment this, but it is
+# generally not a good idea to use echo.
+# See http://www.etalabs.net/sh_tricks.html
+echo () {
+  printf %s\\n "$*"
+}
+
+quote () {
+  tr '\n' ' ' <<EOF | grep '^[-[:alnum:]_=,./:]* $' >/dev/null 2>&1 && { echo "$1" ; return 0 ; }
+$1
+EOF
+  echo "$1" | sed -e "s/'/'\\\\''/g" -e "1s/^/'/" -e "\$s/\$/'/" -e "s#^'\([-[:alnum:]_,./:]*\)=\(.*\)\$#\1='\2#" -e "s|\*/|* /|g"
+}
+
+fail () {
+  echo "$*"
+  exit 1
+}
+
+fnmatch () {
+  eval "case \"\$2\" in $1) return 0 ;; *) return 1 ;; esac"
+}
+
+cmdexists () {
+  type "$1" >/dev/null 2>&1
+}
+
+trycc () {
+  test -z "$CC_AUTO" && cmdexists "$1" && CC_AUTO="$*"
+}
+
+stripdir () {
+  while eval "fnmatch '*/' \"\${$1}\"" ; do
+    eval "$1=\${$1%/}"
+  done
+}
+
+tryflag () {
+  echo "Checking whether compiler accepts $2 ..."
+  echo "typedef int x;" > "$tmpc"
+  if $CC_AUTO $CPPFLAGS_AUTO $CPPFLAGS $CPPFLAGS_POST $CFLAGS_AUTO $CFLAGS $CFLAGS_POST "$2" -c -o "$tmpo" "$tmpc" >/dev/null 2>&1 ; then
+    echo "  ... yes"
+    eval "$1=\"\${$1} \$2\""
+    eval "$1=\${$1# }"
+    return 0
+  else
+    echo "  ... no"
+    return 1
+  fi
+}
+
+tryldflag () {
+  echo "Checking whether linker accepts $2 ..."
+  echo "typedef int x;" > "$tmpc"
+  if $CC_AUTO $CFLAGS_AUTO $CFLAGS $CFLAGS_POST $LDFLAGS_AUTO $LDFLAGS $LDFLAGS_POST -nostdlib "$2" -o "$tmpe" "$tmpc" >/dev/null 2>&1 ; then
+    echo "  ... yes"
+    eval "$1=\"\${$1} \$2\""
+    eval "$1=\${$1# }"
+    return 0
+  else
+    echo "  ... no"
+    return 1
+  fi
+}
+
+
+# Actual script
+
+CC_AUTO=
+CPPFLAGS_AUTO="-D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -iquote src/include-local -Isrc/include"
+CPPFLAGS_POST="$CPPFLAGS"
+CPPFLAGS=
+CFLAGS_AUTO="-pipe -Wall"
+CFLAGS_POST="$CFLAGS"
+CFLAGS=-O2
+LDFLAGS_AUTO=
+LDFLAGS_POST="$LDFLAGS"
+LDFLAGS=
+LDFLAGS_NOSHARED=
+LDFLAGS_SHARED=-shared
+prefix=
+exec_prefix='$prefix'
+dynlibdir='$prefix/lib'
+libexecdir='$exec_prefix/libexec'
+bindir='$exec_prefix/bin'
+libdir='$prefix/lib'
+includedir='$prefix/include'
+pkgconfdir='$prefix/lib/pkgconfig'
+shebangdir='$bindir'
+sysdeps='$prefix/lib/skalibs/sysdeps'
+manualsysdeps=false
+shared=false
+static=true
+allpic=true
+slashpackage=false
+abspath=false
+pcw=false
+sproot=
+home=
+exthome=
+allstatic=true
+evenmorestatic=false
+pkgconf=
+addincpath=''
+addlibspath=''
+addlibdpath=''
+depincpath=''
+deplibpath=''
+vpaths=''
+vpathd=''
+build=
+${configure_init_vars}
+
+for arg ; do
+  case "$arg" in
+    --help) usage ;;
+    --prefix=*) prefix=${arg#*=} ;;
+    --exec-prefix=*) exec_prefix=${arg#*=} ;;
+    --dynlibdir=*) dynlibdir=${arg#*=} ;;
+    --libexecdir=*) libexecdir=${arg#*=} ;;
+    --bindir=*) bindir=${arg#*=} ;;
+    --libdir=*) libdir=${arg#*=} ;;
+    --includedir=*) includedir=${arg#*=} ;;
+    --pkgconfigdir=*) pkgconfigdir=${arg#*=} ;;
+    --with-sysdeps=*) sysdeps=${arg#*=} manualsysdeps=true ;;
+    --with-include=*) var=${arg#*=} ; stripdir var ; addincpath="$addincpath -I$var" ; depincpath="${depincpath}${depincpath:+ }-I$var" ;;
+    --with-lib=*) var=${arg#*=} ; stripdir var ; addlibspath="$addlibspath -L$var" ; deplibpath="${deplibpath}${deplibpath:+ }-I$var" ; vpaths="$vpaths $var" ;;
+    --with-dynlib=*) var=${arg#*=} ; stripdir var ; addlibdpath="$addlibdpath -L$var" ; vpathd="$vpathd $var" ;;
+    --with-pkgconfig=*) pkgconf=${arg#*=} ;;
+    --with-pkgconfig) pkgconf=${PKG_CONFIG:-pkg-config} ;;
+    --without-pkgconfig) pkgconf= ;;
+    --enable-shared|--enable-shared=yes) shared=true ;;
+    --disable-shared|--enable-shared=no) shared=false ;;
+    --enable-static|--enable-static=yes) static=true ;;
+    --disable-static|--enable-static=no) static=false ;;
+    --enable-allstatic|--enable-allstatic=yes) allstatic=true ;;
+    --disable-allstatic|--enable-allstatic=no) allstatic=false ; evenmorestatic=false ;;
+    --enable-static-libc|--enable-static-libc=yes) allstatic=true ; evenmorestatic=true ;;
+    --disable-static-libc|--enable-static-libc=no) evenmorestatic=false ;;
+    --enable-all-pic|--enable-all-pic=yes) allpic=true ;;
+    --disable-all-pic|--enable-all-pic=no) allpic=false ;;
+    --enable-pkgconfig|--enable-pkgconfig=yes) pcw=true ;;
+    --disable-pkgconfig|--enable-pkgconfig=no) pcw=false ;;
+    --enable-slashpackage=*) sproot=${arg#*=} ; slashpackage=true ; ;;
+    --enable-slashpackage) sproot= ; slashpackage=true ;;
+    --disable-slashpackage) sproot= ; slashpackage=false ;;
+    --enable-absolute-paths|--enable-absolute-paths=yes) abspath=true ;;
+    --disable-absolute-paths|--enable-absolute-paths=no) abspath=false ;;
+${configure_case_lines}
+    --enable-*|--disable-*|--with-*|--without-*|--*dir=*) ;;
+    --enable-*|--disable-*|--with-*|--without-*|--*dir=*) ;;
+    --host=*|--target=*) target=${arg#*=} ;;
+    --build=*) build=${arg#*=} ;;
+    -* ) echo "$0: unknown option $arg" ;;
+    *=*) eval "${arg%%=*}=\${arg#*=}" ;;
+    *) target=$arg ;;
+  esac
+done
+
+# Add /usr in the default default case
+if test -z "$prefix" ; then
+  if test "$libdir" = '$prefix/lib' ; then
+    libdir=/usr/lib
+  fi
+  if test "$includedir" = '$prefix/include' ; then
+    includedir=/usr/include
+  fi
+  if test "$pkgconfdir" = '$prefix/lib/pkgconfig' ; then
+    pkgconfdir=/usr/lib/pkgconfig
+  fi
+  if test "$sysdeps" = '$prefix/lib/skalibs/sysdeps' ; then
+    sysdeps=/usr/lib/skalibs/sysdeps
+  fi
+fi
+
+# Expand installation directories
+stripdir prefix
+for i in exec_prefix dynlibdir libexecdir bindir libdir includedir pkgconfdir sysdeps sproot ${configure_expand_dirs} ; do
+  eval tmp=\${$i}
+  eval $i=$tmp
+  stripdir $i
+done
+
+# Process deps-build
+if test -n "$pkgconf" || $pcw || $slashpackage ; then
+  oldifs="$IFS"
+  while IFS=" 	" read cond usedinlibs pkg ver libs ; do
+    IFS="$oldifs"
+    eval "cond=$cond; usedinlibs=$usedinlibs"
+    if $cond ; then
+      if test -n "$pkgconf" ; then
+        for lib in $libs ; do
+          if ! $pkgconf --atleast-version=${ver} --print-errors -- "$lib" ; then
+            echo "./configure: fatal: $pkgconf --atleast-version=${ver} --print-errors -- $lib failed" 1>&2
+            exit 1
+          fi
+          thisinc="`$pkgconf --cflags-only-I -- $lib`"
+          sldflags="`$pkgconf --libs-only-L --static -- $lib`"
+          dldflags="`$pkgconf --libs-only-L -- $lib`"
+          addincpath="${addincpath}${thisinc:+ }$thisinc"
+          addlibspath="${addlibspath}${sldflags:+ }$sldflags"
+          addlibdpath="${addlibdpath}${dldflags:+ }$dldflags"
+          for i in $sldflags ; do
+            vpaths="$vpaths ${i##-L}"
+          done
+          for i in $dldflags ; do
+            vpathd="$vpathd ${i##-L}"
+          done
+          if $usedinlibs ; then
+            depincpath="${depincpath}${thisinc:+ }$thisinc"
+            deplibpath="${deplibpath}${sldflags:+ }$sldflags"
+          fi
+        done
+      fi
+      if $slashpackage ; then
+        addincpath="$addincpath -I${DESTDIR}${sproot}${pkg}/include"
+        vpaths="$vpaths ${DESTDIR}${sproot}${pkg}/library"
+        addlibspath="$addlibspath -L${DESTDIR}${sproot}${pkg}/library"
+        vpathd="$vpathd ${DESTDIR}${sproot}${pkg}/library.so"
+        addlibdpath="$addlibdpath -L${DESTDIR}${sproot}${pkg}/library.so"
+        if $usedinlibs ; then
+          depincpath="$depincpath -I${DESTDIR}${sproot}${pkg}/include"
+          deplibpath="$deplibpath -L${DESTDIR}${sproot}${pkg}/library"
+        fi
+      fi
+    fi
+  done < package/deps-build
+  IFS="$oldifs"
+fi
+
+# Other slashpackage values
+if $slashpackage ; then
+  home=${sproot}/package/${category}/${package}-${version}
+  exthome=${sproot}/package/${category}/${package}
+  if $manualsysdeps ; then
+    :
+  else
+    sysdeps=${DESTDIR}${sproot}/package/prog/skalibs/sysdeps
+  fi
+  extbinprefix=${exthome}/command
+  dynlibdir=${home}/library.so
+  bindir=${home}/command
+  libdir=${home}/library
+  libexecdir=$bindir
+  includedir=${home}/include
+  pkgconfdir=${home}/pkgconfig
+${configure_slashpackage_other}
+fi
+
+# Get usable temp filenames
+i=0
+set -C
+while : ; do
+  i=$(($i+1))
+  tmpc="./tmp-configure-$$-$PPID-$i.c"
+  tmpo="./tmp-configure-$$-$PPID-$i.o"
+  tmpe="./tmp-configure-$$-$PPID-$i.tmp"
+  2>|/dev/null > "$tmpc" && break
+  2>|/dev/null > "$tmpo" && break
+  2>|/dev/null > "$tmpe" && break
+  test "$i" -gt 50 && fail "$0: cannot create temporary files"
+done
+set +C
+trap 'rm -f "$tmpc" "$tmpo" "$tmpe"' EXIT ABRT INT QUIT TERM HUP
+
+# Find a C compiler to use
+if test -n "$target" && test x${build} != x${target} ; then
+  cross=${target}-
+else
+  cross=
+fi
+echo "Checking for C compiler..."
+trycc ${CC}
+if test -n "$CC_AUTO" ; then
+  b=`basename "$CC"`
+  adjust_cross=false
+  if test "$b" != "$CC" ; then
+    adjust_cross=true
+    echo "$0: warning: compiler $CC is declared with its own path. If it's not accessible via PATH, you will need to pass AR, RANLIB and STRIP make variables to the make invocation." 1>&2
+  fi
+  if test -n "$cross" ; then
+    if test "$b" = "${b##$cross}" ; then
+      echo "$0: warning: compiler $CC is declared as a cross-compiler for target $target but does not start with prefix ${cross}" 1>&2
+    elif $adjust_cross ; then
+      cross=`dirname "$CC"`/"$cross"
+    fi
+  fi
+fi
+trycc ${cross}gcc
+trycc ${cross}clang
+trycc ${cross}cc
+test -n "$CC_AUTO" || { echo "$0: cannot find a C compiler" ; exit 1 ; }
+echo "  ... $CC_AUTO"
+echo "Checking whether C compiler works... "
+echo "typedef int x;" > "$tmpc"
+if $CC_AUTO $CPPFLAGS_AUTO $CPPFLAGS $CPPFLAGS_POST $CFLAGS_AUTO $CFLAGS $CFLAGS_POST -c -o "$tmpo" "$tmpc" 2>"$tmpe" ; then
+  echo "  ... yes"
+else
+  echo "  ... no. Compiler output follows:"
+  cat < "$tmpe"
+  exit 1
+fi
+
+echo "Checking target system type..."
+if test -z "$target" ; then
+  if test -n "$build" ; then
+    target=$build ;
+  else
+    target=$($CC_AUTO -dumpmachine 2>/dev/null) || target=unknown
+  fi
+fi
+echo "  ... $target"
+if test ! -d $sysdeps || test ! -f $sysdeps/target ; then
+  echo "$0: error: $sysdeps is not a valid sysdeps directory"
+  exit 1
+fi
+if [ "x$target" != "x$(cat $sysdeps/target)" ] ; then
+  echo "$0: error: target $target does not match the contents of $sysdeps/target"
+  exit 1
+fi
+
+if $allpic ; then
+  tryflag CPPFLAGS_AUTO -fPIC
+fi
+spawn_lib=$(cat $sysdeps/spawn.lib)
+socket_lib=$(cat $sysdeps/socket.lib)
+sysclock_lib=$(cat $sysdeps/sysclock.lib)
+timer_lib=$(cat $sysdeps/timer.lib)
+util_lib=$(cat $sysdeps/util.lib)
+
+tryflag CFLAGS_AUTO -std=c99
+tryflag CFLAGS -fomit-frame-pointer
+tryflag CFLAGS_AUTO -fno-exceptions
+tryflag CFLAGS_AUTO -fno-unwind-tables
+tryflag CFLAGS_AUTO -fno-asynchronous-unwind-tables
+tryflag CPPFLAGS_AUTO -Werror=implicit-function-declaration
+tryflag CPPFLAGS_AUTO -Werror=implicit-int
+tryflag CPPFLAGS_AUTO -Werror=pointer-sign
+tryflag CPPFLAGS_AUTO -Werror=pointer-arith
+tryflag CFLAGS_AUTO -ffunction-sections
+tryflag CFLAGS_AUTO -fdata-sections
+
+tryldflag LDFLAGS_AUTO -Wl,--sort-section=alignment
+tryldflag LDFLAGS_AUTO -Wl,--sort-common
+
+CPPFLAGS_AUTO="${CPPFLAGS_AUTO}${addincpath}"
+
+if $evenmorestatic ; then
+  LDFLAGS_NOSHARED=-static
+fi
+
+if $shared ; then
+  tryldflag LDFLAGS -Wl,--hash-style=both
+fi
+
+LDFLAGS_SHARED="${LDFLAGS_SHARED}${addlibdpath}"
+
+if $allstatic ; then
+  LDFLAGS_NOSHARED="${LDFLAGS_NOSHARED}${addlibspath}"
+  tryldflag LDFLAGS_NOSHARED -Wl,--gc-sections
+else
+  LDFLAGS_NOSHARED="${LDFLAGS_NOSHARED}${addlibdpath}"
+fi
+
+${configure_extra_checks}
+
+echo "Creating config.mak..."
+cmdline=$(quote "$0")
+for i ; do cmdline="$cmdline $(quote "$i")" ; done
+exec 3>&1 1>config.mak
+cat << EOF
+# This file was generated by:
+# $cmdline
+# Any changes made here will be lost if configure is re-run.
+
+target := $target
+package := $package
+prefix := $prefix
+exec_prefix := $exec_prefix
+dynlibdir := $dynlibdir
+libexecdir := $libexecdir
+bindir := $bindir
+libdir := $libdir
+includedir := $includedir
+pkgconfdir := $pkgconfdir
+sysdeps := $sysdeps
+slashpackage := $slashpackage
+sproot := $sproot
+version := $version
+home := $home
+exthome := $exthome
+extra_includedirs :=$depincpath
+extra_libdirs :=$deplibpath
+SPAWN_LIB := ${spawn_lib}
+SOCKET_LIB := ${socket_lib}
+SYSCLOCK_LIB := ${sysclock_lib}
+TIMER_LIB := ${timer_lib}
+UTIL_LIB := ${util_lib}
+
+CC := $CC_AUTO
+CPPFLAGS_AUTO := $CPPFLAGS_AUTO
+CPPFLAGS := ${CPPFLAGS}${CPPFLAGS_POST:+ }$CPPFLAGS_POST
+CFLAGS_AUTO := $CFLAGS_AUTO
+CFLAGS := ${CFLAGS}${CFLAGS_POST:+ }$CFLAGS_POST
+LDFLAGS_AUTO := $LDFLAGS_AUTO
+LDFLAGS := ${LDFLAGS}${LDFLAGS_POST:+ }$LDFLAGS_POST
+LDFLAGS_SHARED := $LDFLAGS_SHARED
+LDFLAGS_NOSHARED := $LDFLAGS_NOSHARED
+CROSS_COMPILE := $cross
+
+vpath lib%.a$vpaths
+vpath lib%.so$vpathd
+
+EOF
+if $allstatic ; then
+  echo ".LIBPATTERNS := lib%.a"
+  echo "DO_ALLSTATIC := 1"
+else
+  echo ".LIBPATTERNS := lib%.so"
+  echo "DO_ALLSTATIC :="
+fi
+if $static ; then
+  echo "DO_STATIC := 1"
+else
+  echo "DO_STATIC :="
+fi
+if $shared ; then
+  echo "DO_SHARED := 1"
+else
+  echo "DO_SHARED :="
+fi
+if $pcw ; then
+  echo "DO_PKGCONFIG := 1"
+else
+  echo "DO_PKGCONFIG :="
+fi
+if $allpic ; then
+  echo "STATIC_LIBS_ARE_PIC := 1"
+else
+  echo "STATIC_LIBS_ARE_PIC :="
+fi
+${configure_generate_make}
+exec 1>&3 3>&-
+echo "  ... done."
+
+echo "Creating src/include/${package}/config.h..."
+mkdir -p -m 0755 src/include/${package}
+exec 3>&1 1> src/include/${package}/config.h
+cat <<EOF
+/* ISC license. */
+
+/* Generated by: $cmdline */
+
+#ifndef ${package_macro_name}_CONFIG_H
+#define ${package_macro_name}_CONFIG_H
+
+#define ${package_macro_name}_VERSION "$version"
+EOF
+if $slashpackage ; then
+  echo "#define ${package_macro_name}_BINPREFIX \"$bindir/\""
+  echo "#define ${package_macro_name}_EXTBINPREFIX \"$extbinprefix/\""
+  echo "#define ${package_macro_name}_EXTLIBEXECPREFIX \"$extbinprefix/\""
+elif $abspath ; then
+  echo "#define ${package_macro_name}_BINPREFIX \"$bindir/\""
+  echo "#define ${package_macro_name}_EXTBINPREFIX \"$bindir/\""
+  echo "#define ${package_macro_name}_EXTLIBEXECPREFIX \"$libexecdir/\""
+else
+  echo "#define ${package_macro_name}_BINPREFIX \"\""
+  echo "#define ${package_macro_name}_EXTBINPREFIX \"\""
+  echo "#define ${package_macro_name}_EXTLIBEXECPREFIX \"$libexecdir/\""
+fi
+echo "#define ${package_macro_name}_LIBEXECPREFIX \"$libexecdir/\""
+${configure_generate_configh}
+echo
+echo "#endif"
+exec 1>&3 3>&-
+echo "  ... done."
diff --git a/tools/gen-configure.el b/tools/gen-configure.el
new file mode 100755
index 0000000..577d86f
--- /dev/null
+++ b/tools/gen-configure.el
@@ -0,0 +1,32 @@
+#!/command/execlineb -S0
+
+# For dev use only. Don't run this, it overwrites your configure.
+
+# The quoting interactions in sed and sh make it impossible to get
+# such a simple thing done. It's amazing how bad traditional Unix is.
+
+backtick -E TEMPLATE { redirfd -r 0 tools/configure.template s6-cat }
+s6-envdir -Lf package/configure-snippets
+multisubstitute
+{
+  importas -uS configure_help_install
+  importas -uS configure_help_dependencies
+  importas -uS configure_help_options
+  importas -uS configure_init_vars
+  importas -uS configure_case_lines
+  importas -uS configure_expand_dirs
+  importas -uS configure_slashpackage_other
+  importas -uS configure_extra_checks
+  importas -uS configure_generate_make
+  importas -uS configure_generate_configh
+}
+
+if
+{
+  heredoc 0 ${TEMPLATE}
+  redirfd -w 1 configure.new
+  s6-cat
+}
+
+if { s6-chmod 0755 configure.new }
+s6-rename configure.new configure
diff --git a/tools/gen-deps.sh b/tools/gen-deps.sh
index befe021..9e18eb1 100755
--- a/tools/gen-deps.sh
+++ b/tools/gen-deps.sh
@@ -61,20 +61,23 @@ for dir in $(ls -1 src | grep -v ^include) ; do
     deps=
     libs=
     while read dep ; do
-      if echo $dep | grep -q -e ^-l -e '^\${.*_LIB}' ; then
+      if echo $dep | grep -q -e '^-l' -e '^\${.*_LIB}' ; then
         libs="$libs $dep"
+      elif echo $dep | grep -q '^\${LIB' ; then
+        deps="$deps $dep"
       else
         deps="$deps src/$dir/$dep"
       fi
     done < src/$dir/deps-lib/$file
     echo 'ifeq ($(strip $(STATIC_LIBS_ARE_PIC)),)'
-    echo "lib${file}.a.xyzzy:$deps"
+    echo "lib${file}.a.xyzzy:${deps}"
     echo else
-    echo "lib${file}.a.xyzzy:$(echo "$deps" | sed 's/\.o/.lo/g')"
+    echo "lib${file}.a.xyzzy:$(echo ${deps} | sed 's/\.o/.lo/g')"
     echo endif
-    if grep -E "^LIB_DEFS [+:]=" package/targets.mak | grep -qF "$file" ; then
+    if grep -qE "^LIB_DEFS [+:]= .*=$file" package/targets.mak ; then
+      echo "lib${file}.pc: EXTRA_LIBS :=${libs}"
       echo "lib${file}.so.xyzzy: EXTRA_LIBS :=$libs"
-      echo "lib${file}.so.xyzzy:$(echo "$deps" | sed 's/\.o/.lo/g')"
+      echo "lib${file}.so.xyzzy:$(echo ${deps} | sed 's/\.o/.lo/g')"
     else
       internal_libs="$internal_libs lib${file}.a.xyzzy"
     fi
@@ -84,10 +87,10 @@ for dir in $(ls -1 src | grep -v ^include) ; do
     deps=
     libs=
     while read dep ; do
-      if echo $dep | grep -q -- \\.o$ ; then
+      if echo $dep | grep -q \\.o$ ; then
         dep="src/$dir/$dep"
       fi
-      if echo $dep | grep -q -e ^-l -e '^\${.*_LIB}' ; then
+      if echo $dep | grep -qx '\${.*_LIB}' ; then
         libs="$libs $dep"
       else
         deps="$deps $dep"
diff --git a/tools/gen-dotpc.sh b/tools/gen-dotpc.sh
new file mode 100755
index 0000000..63c8929
--- /dev/null
+++ b/tools/gen-dotpc.sh
@@ -0,0 +1,101 @@
+#!/bin/sh -e
+
+isunique () {
+  x=$1
+  set -- $2
+  while test "$#" -gt 0 ; do
+    if test "$x" = "$1" ; then
+      return 1
+    fi
+    shift
+  done
+  return 0
+}
+
+uniqit () {
+  res=
+  while test "$#" -gt 0 ; do
+    if isunique "$1" "$res" ; then
+      res="${res}${res:+ }${1}"
+    fi
+    shift
+  done
+  printf %s\\n "$res"
+}
+
+filterout () {
+  res=
+  filter="$1"
+  shift
+  while test "$#" -gt 0 ; do
+    if isunique "$1" "$filter" ; then
+      res="${res}${res:+ }${1}"
+    fi
+    shift
+  done
+  printf %s\\n "$res"
+}
+
+print_requires () {
+  line=
+  oldifs="$IFS"
+  while IFS=" 	" read condvar usedinlibs pkg ver libs ; do
+    IFS="$oldifs"
+    for h ; do
+      i=lib${h##-l}
+      for j in $libs ; do
+        if test "$i" = "$j" ; then
+          line="${line}${line:+, }${i} >= ${ver}"
+        fi
+      done
+    done
+  done < package/deps-build
+  IFS="$oldifs"
+  echo "Requires: $line"
+}
+
+. package/info
+
+ilist=
+dlist=
+slist=
+
+if test "${includedir}" != /usr/include ; then
+  ilist="-I${includedir}"
+fi
+if test -n "${extra_includedirs}" ; then
+  ilist="${ilist}${ilist:+ }${extra_includedirs}"
+fi
+ilist=`uniqit ${ilist}`
+
+if test "${dynlibdir}" != /usr/lib && test "${dynlibdir}" != /lib ; then
+  dlist="-L${dynlibdir}"
+fi
+
+if test "${libdir}" != /usr/lib && test "${libdir}" != /lib ; then
+ slist="-L${libdir}"
+fi
+if test -n "${extra_libdirs}" ; then
+  slist="${slist}${slist:+ }${extra_libdirs}"
+fi
+slist="$(filterout "${dlist}" $(uniqit ${slist}))"
+
+echo "prefix=${prefix}"
+echo "includedir=${includedir}"
+echo "libdir=${libdir}"
+echo "dynlibdir=${dynlibdir}"
+echo
+echo "Name: ${library}"
+echo "Version: ${version}"
+echo "Description: ${description:-The ${library} library.}"
+echo "URL: ${url:-https://skarnet.org/software/${package}/}"
+if test -n "${extra_libs}" ; then
+  print_requires ${extra_libs}
+fi
+if test -n "$ilist" ; then
+  echo "Cflags: ${ilist}"
+fi
+echo "Libs: ${dlist}${dlist:+ }-l${library}${ldlibs:+ }${ldlibs}"
+if test -n "${extra_libs}" ; then
+  echo "Libs.private: ${slist}${slist:+ }${extra_libs}"
+fi
diff --git a/tools/run-test.sh b/tools/run-test.sh
new file mode 100755
index 0000000..d651b09
--- /dev/null
+++ b/tools/run-test.sh
@@ -0,0 +1,22 @@
+#!/bin/sh -e
+
+prog="$1"
+
+if test -x "./src/tests/${prog}.wrapper" ; then
+  cmd="./src/tests/${prog}.wrapper $prog"
+else
+  cmd="./$prog"
+fi
+
+if test -r "./src/tests/${prog}.expected" ; then
+  cp -f "./src/tests/${prog}.expected" "./${prog}.expected"
+elif test -x "./src/tests/${prog}.baseline" ; then
+  "./src/tests/${prog}.baseline" > "./${prog}.expected"
+else
+  echo "run-test.sh: fatal: missing baseline for $prog" 1>&2 ; exit 100
+fi
+
+$cmd | diff "./${prog}.expected" -
+
+rm -f "./${prog}.expected"
+echo "run-test.sh: info: $prog: pass" 1>&2