X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=m4%2Fax_check_link_flag.m4;h=eb01a6ce135eca0fdde834b00c21b12202b09f3d;hb=98767a09d56e1570893ff8c7e57c3a6e6fdbc9d0;hp=db899ddd0859fdef4c168c1383cce7aacc26802e;hpb=49210d3a318c95a533f22ad26c5307d44b12f005;p=ncmpc.git

diff --git a/m4/ax_check_link_flag.m4 b/m4/ax_check_link_flag.m4
index db899dd..eb01a6c 100644
--- a/m4/ax_check_link_flag.m4
+++ b/m4/ax_check_link_flag.m4
@@ -55,10 +55,11 @@
 #   modified version of the Autoconf Macro, you may extend this special
 #   exception to the GPL to apply to your modified version as well.
 
-#serial 3
+#serial 4
 
 AC_DEFUN([AX_CHECK_LINK_FLAG],
-[AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_ldflags_$4_$1])dnl
+[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
+AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_ldflags_$4_$1])dnl
 AC_CACHE_CHECK([whether the linker accepts $1], CACHEVAR, [
   ax_check_save_flags=$LDFLAGS
   LDFLAGS="$LDFLAGS $4 $1"
@@ -66,7 +67,7 @@ AC_CACHE_CHECK([whether the linker accepts $1], CACHEVAR, [
     [AS_VAR_SET(CACHEVAR,[yes])],
     [AS_VAR_SET(CACHEVAR,[no])])
   LDFLAGS=$ax_check_save_flags])
-AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
+AS_VAR_IF(CACHEVAR,yes,
   [m4_default([$2], :)],
   [m4_default([$3], :)])
 AS_VAR_POPDEF([CACHEVAR])dnl