s/AttributesImpl/AttributeImpl/g This is going to apply to Attribute, not Attributes.

[oota-llvm.git] / autoconf / m4 / link_options.m4

diff --git a/autoconf/m4/link_options.m4 b/autoconf/m4/link_options.m4
index 251c8a4f5030b95d82d6eb5744f0deffff80c568..57da4a0d926998a1db92b428005b339b2dcb5c9c 100644 (file)
--- a/autoconf/m4/link_options.m4
+++ b/autoconf/m4/link_options.m4
@@ -1,3 +1,24 @@
+#
+# Get the linker version string.
+#
+# This macro is specific to LLVM.
+#
+AC_DEFUN([AC_LINK_GET_VERSION],
+  [AC_CACHE_CHECK([for linker version],[llvm_cv_link_version],
+  [
+   version_string="$(ld -v 2>&1 | head -1)"
+
+   # Check for ld64.
+   if (echo "$version_string" | grep -q "ld64"); then
+     llvm_cv_link_version=$(echo "$version_string" | sed -e "s#.*ld64-\([^ ]*\)\( (.*)\)\{0,1\}#\1#")
+   else
+     llvm_cv_link_version=$(echo "$version_string" | sed -e "s#[^0-9]*\([0-9.]*\).*#\1#")
+   fi
+  ])
+  AC_DEFINE_UNQUOTED([HOST_LINK_VERSION],"$llvm_cv_link_version",
+                     [Linker version detected at compile time.])
+])
+
 #
 # Determine if the system can handle the -R option being passed to the linker.
 #
@@ -74,7 +95,7 @@ AC_DEFUN([AC_LINK_VERSION_SCRIPT],
 
   CFLAGS="$CFLAGS -Wl,--version-script=$tmp/export.map"
   AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],
-    [llvm_cv_link_use_version_script=yes],[llvm_cv_link_version_script=no])
+    [llvm_cv_link_use_version_script=yes],[llvm_cv_link_use_version_script=no])
   rm "$tmp/export.map"
   rmdir "$tmp"
   CFLAGS="$oldcflags"