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)libsymbol.a 29 30CFLAGS := $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) 31CFLAGS += -ggdb3 -Wall -Wextra -std=gnu11 -U_FORTIFY_SOURCE -fPIC 32 33ifeq ($(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 ($(WERROR),0) 47 CFLAGS += -Werror 48endif 49 50CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 51 52CFLAGS += -I$(srctree)/tools/lib 53CFLAGS += -I$(srctree)/tools/include 54 55RM = rm -f 56 57SYMBOL_IN := $(OUTPUT)libsymbol-in.o 58 59ifeq ($(LP64), 1) 60 libdir_relative = lib64 61else 62 libdir_relative = lib 63endif 64 65prefix ?= 66libdir = $(prefix)/$(libdir_relative) 67 68# Shell quotes 69libdir_SQ = $(subst ','\'',$(libdir)) 70 71all: 72 73export srctree OUTPUT CC LD CFLAGS V 74include $(srctree)/tools/build/Makefile.include 75include $(srctree)/tools/scripts/Makefile.include 76 77all: fixdep $(LIBFILE) 78 79$(SYMBOL_IN): FORCE 80 @$(MAKE) $(build)=libsymbol 81 82$(LIBFILE): $(SYMBOL_IN) 83 $(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(SYMBOL_IN) 84 85define do_install_mkdir 86 if [ ! -d '$(DESTDIR_SQ)$1' ]; then \ 87 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \ 88 fi 89endef 90 91define do_install 92 if [ ! -d '$2' ]; then \ 93 $(INSTALL) -d -m 755 '$2'; \ 94 fi; \ 95 $(INSTALL) $1 $(if $3,-m $3,) '$2' 96endef 97 98install_lib: $(LIBFILE) 99 $(call QUIET_INSTALL, $(LIBFILE)) \ 100 $(call do_install_mkdir,$(libdir_SQ)); \ 101 cp -fpR $(LIBFILE) $(DESTDIR)$(libdir_SQ) 102 103HDRS := kallsyms.h 104INSTALL_HDRS_PFX := $(DESTDIR)$(prefix)/include/symbol 105INSTALL_HDRS := $(addprefix $(INSTALL_HDRS_PFX)/, $(HDRS)) 106 107$(INSTALL_HDRS): $(INSTALL_HDRS_PFX)/%.h: %.h 108 $(call QUIET_INSTALL, $@) \ 109 $(call do_install,$<,$(INSTALL_HDRS_PFX)/,644) 110 111install_headers: $(INSTALL_HDRS) 112 $(call QUIET_INSTALL, libsymbol_headers) 113 114install: install_lib install_headers 115 116clean: 117 $(call QUIET_CLEAN, libsymbol) $(RM) $(LIBFILE); \ 118 find $(or $(OUTPUT),.) -name \*.o -or -name \*.o.cmd -or -name \*.o.d | xargs $(RM) 119 120FORCE: 121 122.PHONY: clean FORCE 123