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Only use O_CLOEXEC on platforms that support it

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Change a9fca58 made use of the O_CLOEXEC flag, which is not supported on
older Linux kernels. This change makes the use contingent on kernel
support.

Testing: I manually compiled breakpad on CentOS 5.8 running kernel
2.6.18-308.8.2.el5.centos.plusxen.

Bug: 730
Change-Id: I21dff928cfba3c156a56708913f65a0c7b5396a6
Reviewed-on: https://chromium-review.googlesource.com/498528
Reviewed-by: Mike Frysinger <vapier@chromium.org>
This commit is contained in:
Lars Volker
2017-05-10 22:50:32 +02:00
committed by Mike Frysinger
parent 54a54702a1
commit ffe3e47865
6 changed files with 141 additions and 0 deletions
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40
configure vendored
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@@ -7455,6 +7455,46 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for O_CLOEXEC defined in fcntl.h" >&5
$as_echo_n "checking for O_CLOEXEC defined in fcntl.h... " >&6; }
if ${ac_cv_defined_O_CLOEXEC_fcntl_h+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <fcntl.h>
int
main ()
{
#ifdef O_CLOEXEC
int ok;
#else
choke me
#endif
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
ac_cv_defined_O_CLOEXEC_fcntl_h=yes
else
ac_cv_defined_O_CLOEXEC_fcntl_h=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_defined_O_CLOEXEC_fcntl_h" >&5
$as_echo "$ac_cv_defined_O_CLOEXEC_fcntl_h" >&6; }
if test $ac_cv_defined_O_CLOEXEC_fcntl_h != "no"; then :
else
$as_echo "#define O_CLOEXEC 0" >>confdefs.h
fi
# Only build Linux client libs when compiling for Linux
case $host in
*-*-linux* | *-android* )