Add compatibility with old libdrm

Targeting current Debian stable (stretch). Add minimum version to
reflect the version Debian has.

2 files changed, 27 insertions, 1 deletions

diff --git a/drm_info.c b/drm_info.c
index c92b8ec..69d9b5b 100644
--- a/drm_info.c
+++ b/drm_info.c
@@ -12,6 +12,32 @@
 #include <xf86drm.h>
 #include <xf86drmMode.h>
 
+// Defines for comaptibility with old libdrm
+
+// drm.h
+
+#ifndef DRM_CAP_CRTC_IN_VBLANK_EVENT
+#define DRM_CAP_CRTC_IN_VBLANK_EVENT 0x12
+#endif
+
+#ifndef DRM_CAP_SYNCOBJ
+#define DRM_CAP_SYNCOBJ 0x13
+#endif
+
+// drm_fourcc.h
+
+#ifndef DRM_FORMAT_R16
+#define DRM_FORMAT_R16 fourcc_code('R', '1', '6', ' ')
+#endif
+
+#ifndef DRM_FORMAT_RG1616
+#define DRM_FORMAT_RG1616 fourcc_code('R', 'G', '3', '2')
+#endif
+
+#ifndef DRM_FORMAT_GR1616
+#define DRM_FORMAT_GR1616 fourcc_code('G', 'R', '3', '2')
+#endif
+
 #define L_LINE "│   "
 #define L_VAL  "├───"
 #define L_LAST "└───"
diff --git a/meson.build b/meson.build
index 0385c44..a194052 100644
--- a/meson.build
+++ b/meson.build
@@ -10,5 +10,5 @@ project('drm_info', 'c',
 add_project_arguments('-D_POSIX_C_SOURCE=200809L', language: 'c')
 
 executable('drm_info', 'drm_info.c',
-  dependencies: dependency('libdrm')
+  dependencies: dependency('libdrm', version: '>= 2.4.74'),
 )