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configure.ac: fix --enable-reproducible-build using -g0 -ffile-prefix-map=... -Wl,--build-id=none. these fixes stabilize the hash of libwolfssl with respect to source and build directory, previously broken for out-of-tree builds.

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Daniel Pouzzner
2024-02-21 16:36:29 -06:00
parent d027b305ab
commit 9e4887bcf4
1 changed files with 27 additions and 1 deletions
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28
configure.ac
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@ -451,9 +451,35 @@ then
RANLIB=ranlib
fi
xxx_ranlib_flags=$(${RANLIB} --help 2>&1)
AM_CFLAGS="$AM_CFLAGS -DHAVE_REPRODUCIBLE_BUILD"
AS_CASE([$xxx_ar_flags],[*'use zero for timestamps and uids/gids'*],[AR_FLAGS="Dcr" lt_ar_flags="Dcr"])
AS_CASE([$xxx_ranlib_flags],[*'Use zero for symbol map timestamp'*],[RANLIB="${RANLIB} -D"])
AM_CFLAGS="$AM_CFLAGS -DHAVE_REPRODUCIBLE_BUILD -g0"
# opportunistically use -ffile-prefix-map (added in GCC8 and LLVM10)
if "$CC" -ffile-prefix-map=/tmp=. -x c - -o /dev/null >/dev/null 2>&1 <<' EOF'
#include <stdlib.h>
int main(int argc, char **argv) {
(void)argc; (void)argv; return 0;
}
EOF
then
AM_CFLAGS="$AM_CFLAGS -ffile-prefix-map=\$(abs_top_srcdir)/= -ffile-prefix-map=\$(top_srcdir)/="
fi
# opportunistically use linker option --build-id=none
if "$CC" -Wl,--build-id=none -x c - -o /dev/null >/dev/null 2>&1 <<' EOF'
#include <stdlib.h>
int main(int argc, char **argv) {
(void)argc; (void)argv; return 0;
}
EOF
then
AM_LDFLAGS="$AM_LDFLAGS -Wl,--build-id=none"
fi
fi