* configure.ac: Check that the shell selected to run the test
scripts can set an exit trap in a shell function, without having
that trap executed at the termination of the function rather
than of the scripts. According to the Autoconf manual, at least
AUX 5.3 /bin/sh suffers of such a bug.
Signed-off-by: Stefano Lattarini <stefano.lattar...@gmail.com>
---
configure.ac | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/configure.ac b/configure.ac
index a8db061..45143c0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -319,6 +319,11 @@ AC_DEFUN([_AM_CHECK_CANDIDATE_SHELL],
[], [am_score=1; break])
_AM_CHECK_SHELL_FEATURE([$1],
+ [can define exit traps in a shell function],
+ [fail=0 && foo() { trap 'fail=1' 0; } && foo && test $fail = 0],
+ [], [am_score=1; break])
+
+ _AM_CHECK_SHELL_FEATURE([$1],
[corrupts stderr with "set -x"],
[(set -x; P=1 true 2>&3) 3>&1 2>/dev/null | grep P=1],
[am_score=9], [])
--
1.7.12.rc0
