From b18fc1ca50570b0674095ee87711e19ee95ae8df Mon Sep 17 00:00:00 2001
From: Christian Hergert <chergert@redhat.com>
Date: Thu, 22 Feb 2018 20:42:42 -0800
Subject: build: make drm optional

---
 configure.ac     | 7 ++++++-
 src/Makefile.am  | 5 ++++-
 src/rototiller.c | 7 ++++++-
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index de7ee3e..578e420 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,7 +7,12 @@ AM_PROG_AR
 AC_PROG_RANLIB
 AM_SILENT_RULES([yes])
 
-PKG_CHECK_MODULES(DRM, libdrm)
+PKG_CHECK_MODULES(DRM, libdrm,
+	AM_CONDITIONAL(ENABLE_DRM, true)
+	AC_DEFINE(HAVE_DRM, [1], [Define to 1 with drm present]),
+	AM_CONDITIONAL(ENABLE_DRM, false)
+)
+
 LIBS="$DRM_LIBS $LIBS"
 CFLAGS="$DRM_CFLAGS $CFLAGS"
 
diff --git a/src/Makefile.am b/src/Makefile.am
index 3d6b8bc..b94b0f3 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,4 +1,7 @@
 SUBDIRS = modules
 bin_PROGRAMS = rototiller
-rototiller_SOURCES = drm_fb.c fb.c fb.h fps.c fps.h rototiller.c rototiller.h sdl_fb.c settings.h settings.c setup.h setup.c threads.c threads.h util.c util.h
+rototiller_SOURCES = fb.c fb.h fps.c fps.h rototiller.c rototiller.h sdl_fb.c settings.h settings.c setup.h setup.c threads.c threads.h util.c util.h
+if ENABLE_DRM
+rototiller_SOURCES += drm_fb.c
+endif
 rototiller_LDADD = -lm modules/julia/libjulia.a modules/plasma/libplasma.a modules/ray/libray.a modules/roto/libroto.a modules/sparkler/libsparkler.a modules/stars/libstars.a
diff --git a/src/rototiller.c b/src/rototiller.c
index 0fbc794..e4c818b 100644
--- a/src/rototiller.c
+++ b/src/rototiller.c
@@ -150,7 +150,9 @@ static int setup_video(settings_t *settings, setting_desc_t **next_setting)
 	if (!video) {
 		setting_desc_t	*desc;
 		const char	*values[] = {
+#ifdef HAVE_DRM
 					"drm",
+#endif
 					"sdl",
 					NULL,
 				};
@@ -170,11 +172,14 @@ static int setup_video(settings_t *settings, setting_desc_t **next_setting)
 	}
 
 	/* XXX: this is kind of hacky for now */
+#ifdef HAVE_DRM
 	if (!strcmp(video, "drm")) {
 		fb_ops = &drm_fb_ops;
 
 		return drm_fb_ops.setup(settings, next_setting);
-	} else if (!strcmp(video, "sdl")) {
+	} else
+#endif
+	if (!strcmp(video, "sdl")) {
 		fb_ops = &sdl_fb_ops;
 
 		return sdl_fb_ops.setup(settings, next_setting);
-- 
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