From 678ff8235a39ac14d9bead05d90ed094c8fbdd3d Mon Sep 17 00:00:00 2001
From: Joel Brobecker <brobecker@adacore.com>
Date: Tue, 24 Nov 2009 22:40:46 +0000
Subject: * zlib.m4: New file.

From-SVN: r154521
---
 config/zlib.m4 | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 config/zlib.m4

(limited to 'config/zlib.m4')

diff --git a/config/zlib.m4 b/config/zlib.m4
new file mode 100644
index 0000000..b017499
--- /dev/null
+++ b/config/zlib.m4
@@ -0,0 +1,18 @@
+dnl A function to check for zlib availability.  zlib is used by default
+dnl unless the user configured with --disable-nls.
+
+AC_DEFUN([AM_ZLIB],
+[
+  # See if the user specified whether he wants zlib support or not.
+  AC_ARG_WITH(zlib,
+    [  --with-zlib             include zlib support (auto/yes/no) [default=auto]],
+    [], [with_zlib=auto])
+
+  if test "$with_zlib" != "no"; then
+    AC_SEARCH_LIBS(zlibVersion, z, [AC_CHECK_HEADERS(zlib.h)])
+    if test "$with_zlib" = "yes" -a "$ac_cv_header_zlib_h" != "yes"; then
+      AC_MSG_ERROR([zlib (libz) library was explicitly requested but not found])
+    fi
+  fi
+])
+
-- 
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