From 1b4d33767fde9c55aa2e32f1a313688dc48a6ad4 Mon Sep 17 00:00:00 2001
From: Haru <haru@dotalux.com>
Date: Thu, 13 Aug 2015 03:40:06 +0200
Subject: Added check for execinfo.h/backtrace() to the configure script

- This fixes compilation on systems such as FreeBSD, where -lexecinfo
  is necessary, or Cygwin, where execinfo.h is not available.

Signed-off-by: Haru <haru@dotalux.com>
---
 configure | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 73 insertions(+), 1 deletion(-)

(limited to 'configure')

diff --git a/configure b/configure
index b022ca2d5..2500494c9 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in 3bd5d73.
+# From configure.in 08e100e.
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.69.
 #
@@ -7988,6 +7988,78 @@ else
 fi
 
 
+# execinfo (backtrace)
+for ac_header in execinfo.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "execinfo.h" "ac_cv_header_execinfo_h" "$ac_includes_default"
+if test "x$ac_cv_header_execinfo_h" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_EXECINFO_H 1
+_ACEOF
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing backtrace" >&5
+$as_echo_n "checking for library containing backtrace... " >&6; }
+if ${ac_cv_search_backtrace+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char backtrace ();
+int
+main ()
+{
+return backtrace ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' execinfo; do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_search_backtrace=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext
+  if ${ac_cv_search_backtrace+:} false; then :
+  break
+fi
+done
+if ${ac_cv_search_backtrace+:} false; then :
+
+else
+  ac_cv_search_backtrace=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_backtrace" >&5
+$as_echo "$ac_cv_search_backtrace" >&6; }
+ac_res=$ac_cv_search_backtrace
+if test "$ac_res" != no; then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+				CFLAGS="$CFLAGS -DHAVE_EXECINFO"
+
+fi
+
+
+fi
+
+done
+
 
 #
 # MySQL library
-- 
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