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-rw-r--r--config/zlib.m46
1 files changed, 4 insertions, 2 deletions
diff --git a/config/zlib.m4 b/config/zlib.m4
index 3664295..aa3ac48 100644
--- a/config/zlib.m4
+++ b/config/zlib.m4
@@ -9,8 +9,10 @@ AC_DEFUN([AM_ZLIB],
zlibinc="-I\$(srcdir)/../zlib"
AC_ARG_WITH(system-zlib,
[AS_HELP_STRING([--with-system-zlib], [use installed libz])],
- zlibdir=
- zlibinc=
+ if test x$with_system_zlib = xyes ; then
+ zlibdir=
+ zlibinc=
+ fi
)
AC_SUBST(zlibdir)
AC_SUBST(zlibinc)