build: Don't fail if libX11 isn't installed
configure.ac would previously refuse to complete if libX11 wasn't
installed, even if we'd disabled GLX and weren't building an X11 EGL
platform. Make the check simply set the no_x variable that's used (but
never set) immediately below for what looks like this very case.
Signed-off-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Dan Nicholson <dbn.lists@gmail.com>
diff --git a/configure.ac b/configure.ac
index 6c7a192..aa72523 100644
--- a/configure.ac
+++ b/configure.ac
@@ -810,7 +810,7 @@
fi
dnl Find out if X is available.
-PKG_CHECK_MODULES([X11], [x11])
+PKG_CHECK_MODULES([X11], [x11], [no_x=no], [no_x=yes])
dnl Try to tell the user that the --x-* options are only used when
dnl pkg-config is not available. This must be right after AC_PATH_XTRA.