Fix zlib link test

[shibboleth/cpp-opensaml.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 74d0cb7..8ed1f41 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -102,7 +102,11 @@ else
 fi
 
 AC_CHECK_HEADER([zlib.h],,AC_MSG_ERROR([unable to find zlib header files]))
-AC_CHECK_LIB([z],[deflateInit2_],[],AC_MSG_ERROR([unable to link with zlib library]))
+AC_LINK_IFELSE(
+    [AC_LANG_PROGRAM([[#include <zlib.h>]],
+        [[zlibVersion()]])],,
+    [AC_MSG_ERROR([unable to link with zlib])])
+
 
 # OpenSSL settings
 AC_ARG_WITH(openssl,