Close #13415: Test in configure if unsetenv() has a return value or not.

Patch written by Charles-François Natali.
This commit is contained in:
Victor Stinner 2011-11-24 13:53:38 +01:00
parent 1518e8713d
commit 984890fcbb
4 changed files with 46 additions and 1 deletions

28
configure vendored
View file

@ -9812,6 +9812,34 @@ $as_echo "no" >&6; }
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for broken unsetenv" >&5
$as_echo_n "checking for broken unsetenv... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <stdlib.h>
int
main ()
{
int res = unsetenv("DUMMY")
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
else
$as_echo "#define HAVE_BROKEN_UNSETENV 1" >>confdefs.h
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
for ac_prog in true
do
# Extract the first word of "$ac_prog", so it can be a program name with args.