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)
 34  CFLAGS += -O3
 35endif
 36
 37ifeq ($(DEBUG),0)
 38  CFLAGS += -D_FORTIFY_SOURCE
 39endif
 40
 41# Treat warnings as errors unless directed not to
 42ifneq ($(WERROR),0)
 43  CFLAGS += -Werror
 44endif
 45
 46CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
 47
 48CFLAGS += -I$(srctree)/tools/lib
 49CFLAGS += -I$(srctree)/tools/include
 50
 51RM = rm -f
 52
 53SYMBOL_IN := $(OUTPUT)libsymbol-in.o
 54
 55ifeq ($(LP64), 1)
 56  libdir_relative = lib64
 57else
 58  libdir_relative = lib
 59endif
 60
 61prefix ?=
 62libdir = $(prefix)/$(libdir_relative)
 63
 64# Shell quotes
 65libdir_SQ = $(subst ','\'',$(libdir))
 66
 67all:
 68
 69export srctree OUTPUT CC LD CFLAGS V
 70include $(srctree)/tools/build/Makefile.include
 71include $(srctree)/tools/scripts/Makefile.include
 72
 73all: fixdep $(LIBFILE)
 74
 75$(SYMBOL_IN): FORCE
 76	@$(MAKE) $(build)=libsymbol
 77
 78$(LIBFILE): $(SYMBOL_IN)
 79	$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(SYMBOL_IN)
 80
 81define do_install_mkdir
 82	if [ ! -d '$(DESTDIR_SQ)$1' ]; then             \
 83		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
 84	fi
 85endef
 86
 87define do_install
 88	if [ ! -d '$2' ]; then             \
 89		$(INSTALL) -d -m 755 '$2'; \
 90	fi;                                \
 91	$(INSTALL) $1 $(if $3,-m $3,) '$2'
 92endef
 93
 94install_lib: $(LIBFILE)
 95	$(call QUIET_INSTALL, $(LIBFILE)) \
 96		$(call do_install_mkdir,$(libdir_SQ)); \
 97		cp -fpR $(LIBFILE) $(DESTDIR)$(libdir_SQ)
 98
 99HDRS := kallsyms.h
100INSTALL_HDRS_PFX := $(DESTDIR)$(prefix)/include/symbol
101INSTALL_HDRS := $(addprefix $(INSTALL_HDRS_PFX)/, $(HDRS))
102
103$(INSTALL_HDRS): $(INSTALL_HDRS_PFX)/%.h: %.h
104	$(call QUIET_INSTALL, $@) \
105		$(call do_install,$<,$(INSTALL_HDRS_PFX)/,644)
106
107install_headers: $(INSTALL_HDRS)
108	$(call QUIET_INSTALL, libsymbol_headers)
109
110install: install_lib install_headers
111
112clean:
113	$(call QUIET_CLEAN, libsymbol) $(RM) $(LIBFILE); \
114	find $(or $(OUTPUT),.) -name \*.o -or -name \*.o.cmd -or -name \*.o.d | xargs $(RM)
115
116FORCE:
117
118.PHONY: clean FORCE