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Merged
JacobBarthelmeh merged 1 commit into from
Feb 22, 2024
Merged

20240221-reproducible-build-tweaks #7267

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28 changes: 27 additions & 1 deletion configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -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


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