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Pass the compiler variable to the configurator executable when building ccan/config.h

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When cross compiling it's important that the resulting config.h reflects the platform we are building for and not the one we are building on.
Otherwise we end up with a config.h that defines headers that are not there on the target platform, wrong endnianness and so on.
The -static flag is there to be able to easily run the configurator test executables on the build machine with qemu-*.
E.g. Without the -static flag the resulting dynamically linked ARM executables complain about the lack of linker (/lib/ld-linux-armhf.so or /system/bin/linker for Android), since these files are not usually available on the build machine building statically avoids this problem and results in a proper config.h for cross compiling.
This commit is contained in:
Igor Cota 2018-02-19 10:45:54 +01:00 • committed by Rusty Russell
parent 3a5aa75fb6
commit bd95aba7a5
1 changed files with 1 additions and 1 deletions
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Makefile
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@ -255,7 +255,7 @@ ALL_PROGRAMS += ccan/ccan/cdump/tools/cdump-enumstr
ccan/ccan/cdump/tools/cdump-enumstr.o: $(CCAN_HEADERS) Makefile
ccan/config.h: ccan/tools/configurator/configurator
if $< > $@.new; then mv $@.new $@; else rm $@.new; exit 1; fi
if $< $(CC) -static > $@.new; then mv $@.new $@; else rm $@.new; exit 1; fi
gen_version.h: FORCE
@(echo "#define VERSION \"`git describe --always --dirty`\"" && echo "#define VERSION_NAME \"$(NAME)\"" && echo "#define BUILD_FEATURES \"$(FEATURES)\"") > $@.new