2006-07-25 Paolo Bonzini <bonzini@gnu.org>

[deliverable/binutils-gdb.git] / config / unwind_ipinfo.m4

diff --git a/config/unwind_ipinfo.m4 b/config/unwind_ipinfo.m4
new file mode 100644 (file)
index 0000000..5587d9c
--- /dev/null
+++ b/config/unwind_ipinfo.m4
@@ -0,0 +1,22 @@
+dnl
+dnl Check whether _Unwind_GetIPInfo is available.
+dnl
+AC_DEFUN([GCC_CHECK_UNWIND_GETIPINFO], [
+  AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS="$CXXFLAGS -fno-exceptions"
+  AC_MSG_CHECKING([for _Unwind_GetIPInfo])
+  AC_CACHE_VAL(gcc_cv_getipinfo, [
+  AC_TRY_LINK([extern "C" { extern void _Unwind_GetIPInfo(); }],
+      [_Unwind_GetIPInfo();],
+      [gcc_cv_getipinfo=yes],
+      [gcc_cv_getipinfo=no])
+  ])
+  if test $gcc_cv_getipinfo = yes; then
+    AC_DEFINE(HAVE_GETIPINFO, 1, [Define if _Unwind_GetIPInfo is available.])
+  fi
+  AC_MSG_RESULT($gcc_cv_getipinfo)
+  CXXFLAGS="$ac_save_CXXFLAGS"
+  AC_LANG_RESTORE
+])