[Bug-wget] [PATCH 1/5] use pkg-config to check zlib deps if available

[Mike Frysinger]

Newer versions of these packages ship with pkg-config files, so if we can
detect it via those, do so.  If that fails, fall back to the old methods.
---
 configure.ac | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 3cbe618..8ec6c09 100644
--- a/configure.ac
+++ b/configure.ac
@@ -244,9 +244,17 @@ dnl
 dnl Checks for libraries.
 dnl
 
+PKG_PROG_PKG_CONFIG
+
 AS_IF([test x"$with_zlib" != xno], [
   with_zlib=yes
-  AC_CHECK_LIB(z, compress)
+  PKG_CHECK_MODULES([ZLIB], zlib, [
+    LIBS="$ZLIB_LIBS $LIBS"
+    CFLAGS="$ZLIB_CFLAGS $CFLAGS"
+    AC_DEFINE([HAVE_LIBZ], [1], [Define if using zlib.])
+  ], [
+    AC_CHECK_LIB(z, compress)
+  ])
 ])
 
 AS_IF([test x"$with_ssl" = xopenssl], [
-- 
2.1.2