commit 8cc2017f345c5498375256973157ea1afa86409a
author liujisi@google.com <liujisi@google.com@630680e5-0e50-0410-840e-4b1c322b438d> Wed Dec 05 00:55:16 2012 +0000
committer liujisi@google.com <liujisi@google.com@630680e5-0e50-0410-840e-4b1c322b438d> Wed Dec 05 00:55:16 2012 +0000
tree d78de33d0bcb81fd02f5ebc6c431c7fe0c58c7cf
parent 1d32532ead24125b485125c9644cf915b68016bc

Quote the AC_LANG_SOURCE to eliminate warnings introduced by autoconf 2.6.8

configure.ac

diff --git a/configure.ac b/configure.ac
index 4b8c5b5..9c90dde 100644
--- a/configure.ac
+++ b/configure.ac
@@ -90,12 +90,12 @@
 
   # First check the zlib header version.
   AC_COMPILE_IFELSE(
-    AC_LANG_PROGRAM([[
+    [AC_LANG_PROGRAM([[
         #include <zlib.h>
         #if !defined(ZLIB_VERNUM) || (ZLIB_VERNUM < 0x1204)
         # error zlib version too old
         #endif
-        ]], []), [
+        ]], [])], [
     AC_MSG_RESULT([ok (1.2.0.4 or later)])
 
     # Also need to add -lz to the linker flags and make sure this succeeds.