From 718469e240675b161006ee4f2d5d52de9ad14f2f Mon Sep 17 00:00:00 2001
From: Pixel <Pixel>
Date: Sun, 13 Jan 2002 15:42:03 +0000
Subject: Zlib test & patch.

---
 configure.in | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

(limited to 'configure.in')

diff --git a/configure.in b/configure.in
index da4182e..ff5eaec 100644
--- a/configure.in
+++ b/configure.in
@@ -80,7 +80,24 @@ AC_CHECK_FUNCS(getcwd getwd putenv strdup memmove memset select poll)
 AC_CHECK_FUNCS(strerror strrchr strstr mempcpy nl_langinfo strcspn)
 AC_SEARCH_LIBS(socket,socket)
 AC_SEARCH_LIBS(gethostbyname,nsl)
-AC_SEARCH_LIBS(deflate,z)
+AC_SEARCH_LIBS(gzwrite,z)
+if test x$ac_cv_search_deflate != xno ; then
+  AC_CACHE_CHECK([for well defined gzwrite in zlib.h], ac_cv_wd_gzwrite,
+    AC_TRY_COMPILE(
+      [#include <zlib.h>],
+      [const void * buf; gzwrite(NULL, buf, 0);],
+      [AC_DEFINE(HAVE_WD_ZLIB)
+       ac_cv_wd_gzwrite="yes"],
+      [ac_cv_wd_gzwrite="no"]
+      AC_ERROR([You have a broken zconf.h and compiler pair. You]
+               [should patch this using the zconf.h-patch file.])
+    )
+  )
+else
+  AC_ERROR([This library needs the zlib library. You can found]
+           [it at the url: http://www.zlib.org])
+fi
+
 AC_FUNC_FORK
 AC_FUNC_MALLOC
 AC_FUNC_VPRINTF
-- 
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