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