Add -lexecinfo if no bt found

config.h

@@ -16,6 +16,9 @@
 /* Define to 1 if you have the `edit' library (-ledit). */
 /* #undef HAVE_LIBEDIT */
 
+/* Define to 1 if you have the `execinfo' library (-lexecinfo). */
+/* #undef HAVE_LIBEXECINFO */
+
 /* Define to 1 if you have the `m' library (-lm). */
 #define HAVE_LIBM 1
 

config.h.in

@@ -15,6 +15,9 @@
 /* Define to 1 if you have the `edit' library (-ledit). */
 #undef HAVE_LIBEDIT
 
+/* Define to 1 if you have the `execinfo' library (-lexecinfo). */
+#undef HAVE_LIBEXECINFO
+
 /* Define to 1 if you have the `m' library (-lm). */
 #undef HAVE_LIBM
 

configure

@@ -1469,6 +1469,73 @@ fi
 
 } # ac_fn_c_try_link
 
+# ac_fn_c_check_func LINENO FUNC VAR
+# ----------------------------------
+# Tests whether FUNC exists, setting the cache variable VAR accordingly
+ac_fn_c_check_func ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $2 innocuous_$2
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $2 (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $2
+
+/* 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 $2 ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined __stub_$2 || defined __stub___$2
+choke me
+#endif
+
+int
+main ()
+{
+return $2 ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_func
+
 # ac_fn_c_try_cpp LINENO
 # ----------------------
 # Try to preprocess conftest.$ac_ext, and return whether this succeeded.
@@ -1719,73 +1786,6 @@ $as_echo "$ac_res" >&6; }
   eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_type
-
-# ac_fn_c_check_func LINENO FUNC VAR
-# ----------------------------------
-# Tests whether FUNC exists, setting the cache variable VAR accordingly
-ac_fn_c_check_func ()
-{
-  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
-$as_echo_n "checking for $2... " >&6; }
-if eval \${$3+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $2 innocuous_$2
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $2 (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $2
-
-/* 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 $2 ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined __stub_$2 || defined __stub___$2
-choke me
-#endif
-
-int
-main ()
-{
-return $2 ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  eval "$3=yes"
-else
-  eval "$3=no"
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-fi
-eval ac_res=\$$3
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
-
-} # ac_fn_c_check_func
 cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
@@ -3028,6 +3028,66 @@ fi
 
 EXTRA_LIBS=""
 
+BT=
+ac_fn_c_check_func "$LINENO" "backtrace" "ac_cv_func_backtrace"
+if test "x$ac_cv_func_backtrace" = xyes; then :
+
+    BT=1
+
+fi
+
+
+if test "x$BT" = "x" ; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for backtrace in -lexecinfo" >&5
+$as_echo_n "checking for backtrace in -lexecinfo... " >&6; }
+if ${ac_cv_lib_execinfo_backtrace+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lexecinfo  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$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
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_execinfo_backtrace=yes
+else
+  ac_cv_lib_execinfo_backtrace=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_execinfo_backtrace" >&5
+$as_echo "$ac_cv_lib_execinfo_backtrace" >&6; }
+if test "x$ac_cv_lib_execinfo_backtrace" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBEXECINFO 1
+_ACEOF
+
+  LIBS="-lexecinfo $LIBS"
+
+fi
+
+   EXTRA_LIBS+=" -lexecinfo" ;
+fi
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for rl_save_prompt in -lreadline" >&5
 $as_echo_n "checking for rl_save_prompt in -lreadline... " >&6; }
 if ${ac_cv_lib_readline_rl_save_prompt+:} false; then :

configure.ac

@@ -12,6 +12,21 @@ AC_CHECK_LIB([crypto], [AES_set_encrypt_key])
 
 EXTRA_LIBS=""
 
+BT=
+AC_CHECK_FUNC([backtrace],
+  [
+    BT=1
+  ],
+  [
+  ]
+)
+
+if test "x$BT" = "x" ; then
+  AC_MSG_RESULT([no])
+  AC_CHECK_LIB([execinfo], [backtrace]) 
+  [ EXTRA_LIBS+=" -lexecinfo" ; ]
+fi
+
 AC_CHECK_LIB([readline], [rl_save_prompt], 
   [
     AC_DEFINE([READLINE_GNU], [1], [Use gnu libreadline])