From 4676457df2c8a73b4f589a66315b9b137ee89202 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Sun, 5 Feb 2023 04:37:51 +0000
Subject:  Simplify build system, add --enable-multicall

Signed-off-by: Laurent Bercot <ska@appnovation.com>
---
 Makefile            | 27 ++++++++-------
 configure           |  9 +++++
 package/targets.mak | 98 ++++++++++++-----------------------------------------
 tools/install.sh    | 11 ++++--
 4 files changed, 54 insertions(+), 91 deletions(-)

diff --git a/Makefile b/Makefile
index 483403f..82f380f 100644
--- a/Makefile
+++ b/Makefile
@@ -17,9 +17,8 @@ CC = $(error Please use ./configure first)
 STATIC_LIBS :=
 SHARED_LIBS :=
 INTERNAL_LIBS :=
-EXTRA_TARGETS :=
 LIB_DEFS :=
-EXTRA_BINS :=
+BIN_SYMLINKS :=
 EXTRA_TEMP :=
 
 define library_definition
@@ -55,14 +54,14 @@ RANLIB := $(CROSS_COMPILE)ranlib
 STRIP := $(CROSS_COMPILE)strip
 INSTALL := ./tools/install.sh
 
-ALL_BINS := $(LIBEXEC_TARGETS) $(BIN_TARGETS)
+ALL_BINS := $(BIN_TARGETS) $(LIBEXEC_TARGETS)
 ALL_LIBS := $(SHARED_LIBS) $(STATIC_LIBS) $(INTERNAL_LIBS)
 ALL_INCLUDES := $(wildcard src/include/$(package)/*.h)
 
 all: $(ALL_LIBS) $(ALL_BINS) $(ALL_INCLUDES)
 
 clean:
-	@exec rm -f $(ALL_LIBS) $(ALL_BINS) $(EXTRA_BINS) $(EXTRA_TEMP) $(wildcard src/*/*.o src/*/*.lo)
+	@exec rm -f $(ALL_LIBS) $(ALL_BINS) $(EXTRA_TEMP) $(wildcard src/*/*.o src/*/*.lo)
 
 distclean: clean
 	@exec rm -f config.mak src/include/$(package)/config.h
@@ -86,7 +85,7 @@ endif
 install: install-dynlib install-libexec install-bin install-lib install-include
 install-dynlib: $(SHARED_LIBS:lib%.so.xyzzy=$(DESTDIR)$(dynlibdir)/lib%.so)
 install-libexec: $(LIBEXEC_TARGETS:%=$(DESTDIR)$(libexecdir)/%)
-install-bin: $(BIN_TARGETS:%=$(DESTDIR)$(bindir)/%) $(EXTRA_TARGETS:%=$(DESTDIR)$(bindir)/%)
+install-bin: $(BIN_TARGETS:%=$(DESTDIR)$(bindir)/%) $(BIN_SYMLINKS:%=$(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)
 install-data: $(ALL_DATA:src/etc/%=$(DESTDIR)$(datadir)/%)
@@ -98,7 +97,7 @@ $(DESTDIR)$(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/%) $(EXTRA_TARGETS:%=$(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) $@
@@ -118,11 +117,15 @@ $(DESTDIR)$(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 $$mode $@ ; }
+$(LIBEXEC_TARGETS:%=$(DESTDIR)$(libexecdir)/%): $(DESTDIR)$(libexecdir)/%: % package/modes
+$(BIN_TARGETS:%=$(DESTDIR)$(bindir)/%): $(DESTDIR)$(bindir)/%: % package/modes
+$(LIBEXEC_TARGETS:%=$(DESTDIR)$(libexecdir)/%) $(BIN_TARGETS:%=$(DESTDIR)$(bindir)/%):
+	grep -- ^$(@F) < package/modes | { read name mode og && \
+	if [ x$$og != x ] ; then og="-O $${og}" ; fi && \
+	$(INSTALL) -D -m $$mode $$og $< $@ ; }
+
+$(BIN_SYMLINKS:%=$(DESTDIR)$(bindir)/%): $(BIN_SYMLINKS:%=$(DESTDIR)$(bindir)/$(SYMLINK_TARGET_%))
+	exec $(INSTALL) -l $(SYMLINK_TARGET_$(@F)) $@
 
 $(DESTDIR)$(libdir)/lib%.a: lib%.a.xyzzy
 	exec $(INSTALL) -D -m 644 $< $@
@@ -136,7 +139,7 @@ $(DESTDIR)$(includedir)/$(package)/%.h: src/include/$(package)/%.h
 %.lo: %.c
 	exec $(CC) $(CPPFLAGS_ALL) $(CFLAGS_ALL) $(CFLAGS_SHARED) -c -o $@ $<
 
-$(ALL_BINS) $(EXTRA_BINS):
+$(ALL_BINS):
 	exec $(CC) -o $@ $(CFLAGS_ALL) $(LDFLAGS_ALL) $(LDFLAGS_NOSHARED) $^ $(EXTRA_LIBS) $(LDLIBS)
 
 lib%.a.xyzzy:
diff --git a/configure b/configure
index e977c7d..2cfe80e 100755
--- a/configure
+++ b/configure
@@ -48,6 +48,7 @@ Optional features:
                                   hardcode absolute BINDIR/foobar paths instead [disabled]
   --enable-nsss                 use the nsss library for user information [disabled]
   --enable-pedantic-posix       use pedantically POSIX-compatible binaries [disabled]
+  --enable-multicall            build a multicall binary (EXPERIMENTAL) [disabled]
 
 EOF
 exit 0
@@ -154,6 +155,7 @@ slashpackage=false
 abspath=false
 usensss=false
 pposix=false
+multicall=false
 sproot=
 home=
 exthome=
@@ -200,6 +202,8 @@ for arg ; do
     --disable-nsss|--enable-nsss=no) usensss=false ;;
     --enable-pedantic-posix|--enable-pedantic-posix=yes) pposix=true ;;
     --disable-pedantic-posix|--enable-pedantic-posix=no) pposix=false ;;
+    --enable-multicall|--enable-multicall=yes) multicall=true ;;
+    --disable-multicall|--enable-multicall=no) multicall=false ;;
     --enable-*|--disable-*|--with-*|--without-*|--*dir=*) ;;
     --enable-*|--disable-*|--with-*|--without-*|--*dir=*) ;;
     --host=*|--target=*) target=${arg#*=} ;;
@@ -465,6 +469,11 @@ if $pposix ; then
 else
   echo "PEDANTIC_POSIX :="
 fi
+if $multicall ; then
+  echo "MULTICALL := 1"
+else
+  echo "MULTICALL :="
+fi
 exec 1>&3 3>&-
 echo "  ... done."
 
diff --git a/package/targets.mak b/package/targets.mak
index 37e8fa7..c8fe852 100644
--- a/package/targets.mak
+++ b/package/targets.mak
@@ -1,88 +1,34 @@
-BIN_TARGETS := \
-background \
-backtick \
-case \
-define \
-dollarat \
-elgetopt \
-elgetpositionals \
-elglob \
-eltest \
-emptyenv \
-envfile \
-exec \
-execlineb \
-execline-cd \
-execline-umask \
-exit \
-export \
-fdblock \
-fdclose \
-fdmove \
-fdswap \
-fdreserve \
-forbacktickx \
-foreground \
-forstdin \
-forx \
-getcwd \
-getpid \
-heredoc \
-homeof \
-if \
-ifelse \
-ifte \
-ifthenelse \
-importas \
-loopwhilex \
-multidefine \
-multisubstitute \
-pipeline \
-piperw \
-posix-cd \
-posix-umask \
-redirfd \
-runblock \
-shift \
-trap \
-tryexec \
-unexport \
-wait \
-withstdinas
-
 LIBEXEC_TARGETS :=
 
 LIB_DEFS := EXECLINE=execline
 
-ifeq ($(PEDANTIC_POSIX),1)
-PEDANTIC_PREFIX := posix
-else
-PEDANTIC_PREFIX := execline
-endif
-
-EXTRA_TARGETS := cd umask
-
-$(DESTDIR)$(bindir)/cd: $(DESTDIR)$(bindir)/$(PEDANTIC_PREFIX)-cd
-	exec ./tools/install.sh -l $(PEDANTIC_PREFIX)-cd $(DESTDIR)$(bindir)/cd
-
-$(DESTDIR)$(bindir)/umask: $(DESTDIR)$(bindir)/$(PEDANTIC_PREFIX)-umask
-	exec ./tools/install.sh -l $(PEDANTIC_PREFIX)-umask $(DESTDIR)$(bindir)/umask
-
+ifeq ($(MULTICALL),1)
 
-EXTRA_BINS := execline
+BIN_TARGETS := execline
+BIN_SYMLINKS := cd umask $(notdir $(wildcard src/execline/deps-exe/*))
 EXTRA_TEMP := src/multicall/execline.c
 
-multicall multicall-all: execline
+define symlink_definition
+SYMLINK_TARGET_$(1) := execline
+endef
+$(foreach name,$(BIN_SYMLINKS),$(eval $(call symlink_definition,$(name))))
 
-multicall-strip: execline
-	exec $(STRIP) -R .note -R .comment execline
+src/multicall/execline.c: tools/gen-multicall.sh src/execline/deps-exe
+	./tools/gen-multicall.sh > src/multicall/execline.c
 
-multicall-install: $(DESTDIR)$(bindir)/execline
-	for i in $(BIN_TARGETS) $(EXTRA_TARGETS) ; do ./tools/install.sh -l execline $(DESTDIR)$(bindir)/$$i ; done
+src/multicall/execline.o: src/multicall/execline.c src/include/execline/config.h src/include/execline/execline.h
 
-multicall-global-links: $(DESTDIR)$(sproot)/command/execline
+else
 
-.PHONY: multicall multicall-all multicall-strip multicall-install multicall-global-links
+BIN_TARGETS := $(notdir $(wildcard src/execline/deps-exe/*))
+BIN_SYMLINKS := cd umask
 
-src/multicall/execline.c: tools/gen-multicall.sh src/execline/deps-exe src/include/execline/config.h src/include/execline/execline.h
-	./tools/gen-multicall.sh > src/multicall/execline.c
+ifeq ($(PEDANTIC_POSIX),1)
+SYMLINK_TARGET_cd := posix-cd
+SYMLINK_TARGET_umask := posix-umask
+else
+SYMLINK_TARGET_cd := execline-cd
+SYMLINK_TARGET_umask := execline-umask
+endif
+
+endif
diff --git a/tools/install.sh b/tools/install.sh
index 89f9428..e96dd7b 100755
--- a/tools/install.sh
+++ b/tools/install.sh
@@ -1,19 +1,21 @@
 #!/bin/sh
 
 usage() {
-  echo "usage: $0 [-D] [-l] [-m mode] src dst" 1>&2
+  echo "usage: $0 [ -D ] [ -l ] [ -m mode ] [ -O owner:group ] src dst" 1>&2
   exit 1
 }
 
 mkdirp=false
 symlink=false
 mode=0755
+og=
 
-while getopts Dlm: name ; do
+while getopts Dlm:O: name ; do
   case "$name" in
     D) mkdirp=true ;;
     l) symlink=true ;;
     m) mode=$OPTARG ;;
+    O) og=$OPTARG ;;
     ?) usage ;;
   esac
 done
@@ -46,7 +48,10 @@ if $symlink ; then
   ln -s "$src" "$tmp"
 else
   cat < "$1" > "$tmp"
-  chmod "$mode" "$tmp"
+  if test -n "$og" ; then
+    chown -- "$og" "$tmp"
+  fi
+  chmod -- "$mode" "$tmp"
 fi
 
 mv -f "$tmp" "$dst"
-- 
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