LIBDRM_CFLAGS := $(shell $(PKG_CONFIG) --cflags libdrm)
LIBDRM_LIBS := $(shell $(PKG_CONFIG) --libs libdrm)
-CPPFLAGS += -Wall -fPIC -Werror -flto $(LIBDRM_CFLAGS)
+CPPFLAGS += -Wall -fPIC -Werror -flto $(LIBDRM_CFLAGS) -D_GNU_SOURCE=1
CXXFLAGS += -std=c++14
-CFLAGS += -std=c99
+CFLAGS += -std=c99 -D_GNU_SOURCE=1
LIBS += -shared -lcutils -lhardware -lsync $(LIBDRM_LIBS)
OBJS = $(foreach source, $(SOURCES), $(addsuffix .o, $(basename $(source))))