-CPPFLAGS += -std=c99 -D_GNU_SOURCE=1
-CFLAGS += -Wall -Wsign-compare -Wpointer-arith -Wcast-qual -Wcast-align
+CPPFLAGS += -D_GNU_SOURCE=1
+CFLAGS += -std=c99 -Wall -Wsign-compare -Wpointer-arith -Wcast-qual \
+ -Wcast-align -D_GNU_SOURCE=1 -D_FILE_OFFSET_BITS=64
+
+ifdef DRV_AMDGPU
+ CFLAGS += $(shell $(PKG_CONFIG) --cflags libdrm_amdgpu)
+ LDLIBS += -lamdgpuaddr
+endif
+ifdef DRV_EXYNOS
+ CFLAGS += $(shell $(PKG_CONFIG) --cflags libdrm_exynos)
+endif
+ifdef DRV_I915
+ CFLAGS += $(shell $(PKG_CONFIG) --cflags libdrm_intel)
+endif
+ifdef DRV_RADEON
+ CFLAGS += $(shell $(PKG_CONFIG) --cflags libdrm_radeon)
+endif
+ifdef DRV_ROCKCHIP
+ CFLAGS += $(shell $(PKG_CONFIG) --cflags libdrm_rockchip)
+endif