1ifeq ("$(origin O)", "command line") 2 OUTPUT := $(O)/ 3endif 4 5ifneq ($(OUTPUT),) 6# check that the output directory actually exists 7OUTDIR := $(shell cd $(OUTPUT) && /bin/pwd) 8$(if $(OUTDIR),, $(error output directory "$(OUTPUT)" does not exist)) 9endif 10 11# 12# Include saner warnings here, which can catch bugs: 13# 14EXTRA_WARNINGS := -Wformat 15EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wformat-security 16EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wformat-y2k 17EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wshadow 18EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Winit-self 19EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wpacked 20EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wredundant-decls 21EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wstrict-aliasing=3 22EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wswitch-default 23EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wswitch-enum 24EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wno-system-headers 25EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wundef 26EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wwrite-strings 27EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wbad-function-cast 28EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wmissing-declarations 29EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wmissing-prototypes 30EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wnested-externs 31EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wold-style-definition 32EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wstrict-prototypes 33EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wdeclaration-after-statement 34 35ifneq ($(findstring $(MAKEFLAGS), w),w) 36PRINT_DIR = --no-print-directory 37else 38NO_SUBDIR = : 39endif 40 41QUIET_SUBDIR0 = +$(MAKE) -C # space to separate -C and subdir 42QUIET_SUBDIR1 = 43 44ifneq ($(findstring $(MAKEFLAGS),s),s) 45ifndef V 46 QUIET_CC = @echo ' ' CC $@; 47 QUIET_AR = @echo ' ' AR $@; 48 QUIET_LINK = @echo ' ' LINK $@; 49 QUIET_MKDIR = @echo ' ' MKDIR $@; 50 QUIET_GEN = @echo ' ' GEN $@; 51 QUIET_SUBDIR0 = +@subdir= 52 QUIET_SUBDIR1 = ;$(NO_SUBDIR) echo ' ' SUBDIR $$subdir; \ 53 $(MAKE) $(PRINT_DIR) -C $$subdir 54 QUIET_FLEX = @echo ' ' FLEX $@; 55 QUIET_BISON = @echo ' ' BISON $@; 56endif 57endif 58