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build-sys: introduce a special build flag to explicitly disables running from build tree

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It is helpful to improve reproducibility build [1] since
PA_SRCDIR/PA_BUILDDIR contains build path,
--disable-running-from-build-tree could drop these macros at
precompilation.

[1] https://reproducible-builds.org/

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
This commit is contained in:
Hongxu Jia 2018-12-07 15:48:49 +08:00 • committed by Tanu Kaskinen
parent bae8c16bfa
commit 3d9deb1e56
7 changed files with 29 additions and 5 deletions
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4
src/pulsecore/core-util.c
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@ -3269,15 +3269,17 @@ void pa_reset_personality(void) {
}
bool pa_run_from_build_tree(void) {
char *rp;
static bool b = false;
#ifdef HAVE_RUNNING_FROM_BUILD_TREE
char *rp;
PA_ONCE_BEGIN {
if ((rp = pa_readlink("/proc/self/exe"))) {
b = pa_startswith(rp, PA_BUILDDIR);
pa_xfree(rp);
}
} PA_ONCE_END;
#endif
return b;
}