omit HGL on Windows

diff --git a/libraries/Makefile b/libraries/Makefile
index b6d8ede..889d86a 100644 (file)
--- a/libraries/Makefile
+++ b/libraries/Makefile
@@ -31,7 +31,11 @@ SUBDIRS += $(wildcard mtl)
 SUBDIRS += $(wildcard fgl)
 SUBDIRS += $(wildcard X11)
 SUBDIRS += $(wildcard time)
+ifeq "$(Windows)" "NO"
+# HGL is not working on Win32, so omit it for now.  Better not to ship it
+# at all than to ship a broken version.
 SUBDIRS += $(wildcard HGL)
+endif
 SUBDIRS += $(wildcard OpenGL)
 SUBDIRS += $(wildcard GLUT)
 SUBDIRS += $(wildcard OpenAL)