1# SPDX-License-Identifier: GPL-2.0 2include ../../scripts/Makefile.include 3include ../../scripts/utilities.mak # QUIET_CLEAN 4 5ifeq ($(srctree),) 6srctree := $(patsubst %/,%,$(dir $(CURDIR))) 7srctree := $(patsubst %/,%,$(dir $(srctree))) 8srctree := $(patsubst %/,%,$(dir $(srctree))) 9#$(info Determined 'srctree' to be $(srctree)) 10endif 11 12CC ?= $(CROSS_COMPILE)gcc 13AR ?= $(CROSS_COMPILE)ar 14LD ?= $(CROSS_COMPILE)ld 15 16MAKEFLAGS += --no-print-directory 17 18INSTALL = install 19 20 21# Use DESTDIR for installing into a different root directory. 22# This is useful for building a package. The program will be 23# installed in this directory as if it was the root directory. 24# Then the build tool can move it later. 25DESTDIR ?= 26DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))' 27 28LIBFILE = $(OUTPUT)libapi.a 29 30CFLAGS := $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) 31CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -U_FORTIFY_SOURCE -fPIC 32 33ifeq ($(DEBUG),0) 34ifeq ($(CC_NO_CLANG), 0) 35 CFLAGS += -O3 36else 37 CFLAGS += -O6 38endif 39endif 40 41ifeq ($(DEBUG),0) 42 CFLAGS += -D_FORTIFY_SOURCE 43endif 44 45# Treat warnings as errors unless directed not to 46ifneq ($(WERROR),0) 47 CFLAGS += -Werror 48endif 49 50CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 51CFLAGS += -I$(srctree)/tools/lib/api 52CFLAGS += -I$(srctree)/tools/include 53 54RM = rm -f 55 56API_IN := $(OUTPUT)libapi-in.o 57 58ifeq ($(LP64), 1) 59 libdir_relative = lib64 60else 61 libdir_relative = lib 62endif 63 64prefix ?= 65libdir = $(prefix)/$(libdir_relative) 66 67# Shell quotes 68libdir_SQ = $(subst ','\'',$(libdir)) 69 70all: 71 72export srctree OUTPUT CC LD CFLAGS V 73include $(srctree)/tools/build/Makefile.include 74include $(srctree)/tools/scripts/Makefile.include 75 76all: fixdep $(LIBFILE) 77 78$(API_IN): FORCE 79 @$(MAKE) $(build)=libapi 80 81$(LIBFILE): $(API_IN) 82 $(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(API_IN) 83 84define do_install_mkdir 85 if [ ! -d '$(DESTDIR_SQ)$1' ]; then \ 86 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \ 87 fi 88endef 89 90define do_install 91 if [ ! -d '$2' ]; then \ 92 $(INSTALL) -d -m 755 '$2'; \ 93 fi; \ 94 $(INSTALL) $1 $(if $3,-m $3,) '$2' 95endef 96 97install_lib: $(LIBFILE) 98 $(call QUIET_INSTALL, $(LIBFILE)) \ 99 $(call do_install_mkdir,$(libdir_SQ)); \ 100 cp -fpR $(LIBFILE) $(DESTDIR)$(libdir_SQ) 101 102HDRS := cpu.h debug.h io.h 103FD_HDRS := fd/array.h 104FS_HDRS := fs/fs.h fs/tracing_path.h 105INSTALL_HDRS_PFX := $(DESTDIR)$(prefix)/include/api 106INSTALL_HDRS := $(addprefix $(INSTALL_HDRS_PFX)/, $(HDRS)) 107INSTALL_FD_HDRS := $(addprefix $(INSTALL_HDRS_PFX)/, $(FD_HDRS)) 108INSTALL_FS_HDRS := $(addprefix $(INSTALL_HDRS_PFX)/, $(FS_HDRS)) 109 110$(INSTALL_HDRS): $(INSTALL_HDRS_PFX)/%.h: %.h 111 $(call QUIET_INSTALL, $@) \ 112 $(call do_install,$<,$(INSTALL_HDRS_PFX)/,644) 113 114$(INSTALL_FD_HDRS): $(INSTALL_HDRS_PFX)/fd/%.h: fd/%.h 115 $(call QUIET_INSTALL, $@) \ 116 $(call do_install,$<,$(INSTALL_HDRS_PFX)/fd/,644) 117 118$(INSTALL_FS_HDRS): $(INSTALL_HDRS_PFX)/fs/%.h: fs/%.h 119 $(call QUIET_INSTALL, $@) \ 120 $(call do_install,$<,$(INSTALL_HDRS_PFX)/fs/,644) 121 122install_headers: $(INSTALL_HDRS) $(INSTALL_FD_HDRS) $(INSTALL_FS_HDRS) 123 $(call QUIET_INSTALL, libapi_headers) 124 125install: install_lib install_headers 126 127clean: 128 $(call QUIET_CLEAN, libapi) $(RM) $(LIBFILE); \ 129 find $(or $(OUTPUT),.) -name \*.o -or -name \*.o.cmd -or -name \*.o.d | xargs $(RM) 130 131FORCE: 132 133.PHONY: clean FORCE 134