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makepkg: use -ffile-prefix-map instead of -fdebug-prefix-map

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>From gcc(1):

-ffile-prefix-map=old=new
	[...] Specifying this option is equivalent to specifying all the
	individual -f*-prefix-map options. This can be used to make reproducible
	builds that are location independent.

Specifically, this additionally enables -fmacro-prefix-map=, which causes
prefix mapping to be applied to expansions of __FILE__ and similar macros.

Without this option, if source files are compiled by passing the
absolute file path to the compiler (as done by e.g. cmake), any
expansions of __FILE__ (e.g. from uses of assert()) will contain
$srcdir.

Signed-off-by: Allan McRae <allan@archlinux.org>
This commit is contained in:
Xiretza 2022-01-01 14:40:24 +01:00 • committed by Allan McRae
parent 90df85e9cf
commit e37f7d8b6b
1 changed files with 2 additions and 2 deletions
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4
scripts/libmakepkg/buildenv/debugflags.sh.in
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@ -30,8 +30,8 @@ buildenv_functions+=('buildenv_debugflags')
buildenv_debugflags() {
if check_option "debug" "y"; then
DEBUG_CFLAGS+=" -fdebug-prefix-map=$srcdir=${DBGSRCDIR:-/usr/src/debug}"
DEBUG_CXXFLAGS+=" -fdebug-prefix-map=$srcdir=${DBGSRCDIR:-/usr/src/debug}"
DEBUG_CFLAGS+=" -ffile-prefix-map=$srcdir=${DBGSRCDIR:-/usr/src/debug}"
DEBUG_CXXFLAGS+=" -ffile-prefix-map=$srcdir=${DBGSRCDIR:-/usr/src/debug}"
DEBUG_RUSTFLAGS+=" --remap-path-prefix=$srcdir=${DBGSRCDIR:-/usr/src/debug}"
CFLAGS+=" $DEBUG_CFLAGS"
CXXFLAGS+=" $DEBUG_CXXFLAGS"