fixes .cfi configure problem. apparently compiling is not enough
to invoke the gnu as in all cases.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1973 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/configure.in b/configure.in
index 3fe1cd8..8739acb 100644
--- a/configure.in
+++ b/configure.in
@@ -283,7 +283,7 @@
 
 # check if the GNU as supports CFI directives
 AC_MSG_CHECKING([if gas accepts .cfi])
-AC_TRY_COMPILE(, [
+AC_TRY_LINK(, [
 
 __asm__ __volatile__ (".cfi_startproc\n"
                       ".cfi_adjust_cfa_offset 0x0\n"