diff -rNU3 gcc-9.3.0.old/gcc/Makefile.in gcc-9.3.0/gcc/Makefile.in
--- gcc-9.3.0.old/gcc/Makefile.in	2019-04-25 16:32:16.000000000 +0200
+++ gcc-9.3.0/gcc/Makefile.in	2019-11-06 11:27:47.090878255 +0100
@@ -532,7 +532,7 @@
 STMP_FIXINC = @STMP_FIXINC@
 
 # Test to see whether <limits.h> exists in the system header files.
-LIMITS_H_TEST = [ -f $(BUILD_SYSTEM_HEADER_DIR)/limits.h ]
+LIMITS_H_TEST = [ -f $(BUILD_SYSTEM_HEADER_DIR)/limits.h -o -f $(BUILD_SYSTEM_HEADER_DIR)/$(MULTIARCH_DIRNAME)/limits.h ]
 
 # Directory for prefix to system directories, for
 # each of $(system_prefix)/usr/include, $(system_prefix)/usr/lib, etc.