diff options
| author | Ben Pfaff <blp@nicira.com> | 2011-05-13 11:55:22 -0700 |
|---|---|---|
| committer | Ben Pfaff <blp@nicira.com> | 2011-05-13 14:37:14 -0700 |
| commit | 0e6644c3880be9684f37f48da84907bb67112514 (patch) | |
| tree | 200eaf5525aa47c11d373ab76bae12528ad1d64e /m4 | |
| parent | 498b2a5a68dcfea734f42ba548b7c61aabd8385b (diff) | |
backtrace: Make backtrace_capture() work on more systems.
The backtrace_capture() implementation only worked properly with GNU C on
systems that have a simple stack frame with a frame pointer. Notably,
the x86-64 ABI by default has no frame pointer, so this failed on x86-64.
However, glibc has a function named backtrace() that does what we want.
This commit tests for this function and uses it when it is present, fixing
x86-64 backtraces.
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/openvswitch.m4 | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/m4/openvswitch.m4 b/m4/openvswitch.m4 index e6d03a6b..73db4bba 100644 --- a/m4/openvswitch.m4 +++ b/m4/openvswitch.m4 @@ -152,6 +152,11 @@ AC_DEFUN([OVS_CHECK_LOGDIR], [LOGDIR='${localstatedir}/log/${PACKAGE}']) AC_SUBST([LOGDIR])]) +dnl Defines HAVE_BACKTRACE if backtrace() is declared in <execinfo.h> +dnl and exists in libc. +AC_DEFUN([OVS_CHECK_BACKTRACE], + [AC_CHECK_HEADER([execinfo.h], [AC_CHECK_FUNCS([backtrace])])]) + dnl Checks for __malloc_hook, etc., supported by glibc. AC_DEFUN([OVS_CHECK_MALLOC_HOOKS], [AC_CACHE_CHECK( |