# HG changeset patch
# User Mike Miller <mtmiller@ieee.org>
# Date 1421621621 18000
# Node ID 722ff3e45bea16b2cfbe15398709543a0fb81ed7
# Parent  7bb80c927af5543d036bab512a18dd26e12bc3c6
build: Don't build GUI when OpenGL is disabled or not found (bug #44017)

* configure.ac: Disable building the GUI when OpenGL libraries are not found
or are intentionally disabled.

diff -r 7bb80c927af5 -r 722ff3e45bea configure.ac
--- a/configure.ac	Sun Jan 18 22:54:14 2015 +0100
+++ b/configure.ac	Sun Jan 18 17:53:41 2015 -0500
@@ -2720,6 +2720,16 @@
   [AS_HELP_STRING([--disable-gui], [don't build the GUI])],
   [if test "$enableval" = no; then build_gui=no; fi], [])
 
+if test -z "$OPENGL_LIBS"; then
+  build_gui=no
+  if test $check_opengl = yes; then
+    warn_gui="OpenGL libs (GL and GLU) not found -- disabling GUI"
+  else
+    warn_gui="--without-opengl was specified -- disabling GUI"
+  fi
+  OCTAVE_CONFIGURE_WARNING([warn_gui])
+fi
+
 if test $build_gui = yes; then
 
   warn_gui=""