OpenLara: update build options to match changes in git repo

[Yorick Hardy <yorickhardy%gmail.com@localhost>]

Module Name:	pkgsrc-wip
Committed By:	Yorick Hardy <yorickhardy%gmail.com@localhost>
Pushed By:	yhardy
Date:		Fri May 1 22:41:57 2020 +0200
Changeset:	ef13d804d78d400a685080ad1daeba2a62c58333

Modified Files:
	OpenLara/Makefile

Log Message:
OpenLara: update build options to match changes in git repo

To see a diff of this commit:
https://wip.pkgsrc.org/cgi-bin/gitweb.cgi?p=pkgsrc-wip.git;a=commitdiff;h=ef13d804d78d400a685080ad1daeba2a62c58333

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

diffstat:
 OpenLara/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diffs:
diff --git a/OpenLara/Makefile b/OpenLara/Makefile
index 97fc3dec47..0a7dab078e 100644
--- a/OpenLara/Makefile
+++ b/OpenLara/Makefile
@@ -28,7 +28,7 @@ do-build:
 		`sdl2-config --cflags` \
 		${PTHREAD_CPPFLAGS} ${PTHREAD_CFLAGS} \
 		-fno-exceptions -fno-rtti -ffunction-sections -fdata-sections -Wl,--gc-sections \
-		-DNDEBUG -D__SDL2__ -DGL_GLEXT_PROTOTYPES \
+		-DNDEBUG -D__SDL2__ -D_SDL2_OPENGL \
 		main.cpp \
 		../../libs/stb_vorbis/stb_vorbis.c \
 		../../libs/minimp3/minimp3.cpp \