From: Mike Frysinger <vapier@gmail.com>
Date: Sun, 2 Jun 2013 15:32:30 +0000 (+0000)
Subject: add a --with-zlib flag for people to control the optional zlib dep explicitly
X-Git-Tag: v2.9.1~6
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d1862da076eba3faf382916df31ab0c72e41d61c;p=cracklib

add a --with-zlib flag for people to control the optional zlib dep explicitly

git-svn-id: file:///tmp/cracklib-svn/trunk@220 4175fe1e-86d5-4fdc-8e6a-506fab9d8533
---

diff --git a/cracklib/configure.ac b/cracklib/configure.ac
index 41aa33d..ea70e72 100644
--- a/cracklib/configure.ac
+++ b/cracklib/configure.ac
@@ -22,9 +22,18 @@ AC_CHECK_HEADERS(fcntl.h)
 AC_CHECK_HEADERS(inttypes.h)
 AC_CHECK_HEADERS(stdint.h)
 AC_CHECK_HEADERS(pthread.h)
-AC_CHECK_HEADERS(zlib.h, AC_DEFINE(HAVE_ZLIB_H, [], [found zlib]))
 
-AC_SEARCH_LIBS(gzopen, z)
+AC_ARG_WITH([zlib],
+   [AS_HELP_STRING([--without-zlib], [build without zlib support @<:@default=auto@:>@])])
+AS_IF([test "$with_zlib" != "no"], [dnl
+   found_zlib=yes
+   AC_CHECK_HEADERS([zlib.h],
+      [AC_DEFINE(HAVE_ZLIB_H, [], [found zlib])],
+      [found_zlib=no])
+   AC_SEARCH_LIBS([gzopen], [z], [], [found_zlib=no])
+   AS_IF([test "$with_zlib$found_zlib" = "yesno"],
+      [AC_MSG_ERROR([zlib not found])])
+])
 
 dnl Cygwin workaround
 AC_MSG_CHECKING(if LINE_MAX is defined)