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Ian Rogers 1849f9f009 tools lib api: Add dependency test to install_headers

Compute the headers to be installed from their source headers and make
each have its own build target to install it. Using dependencies
avoids headers being reinstalled and getting a new timestamp which
then causes files that depend on the header to be rebuilt.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Cc: llvm@lists.linux.dev
Link: https://lore.kernel.org/r/20221202045743.2639466-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2022-12-14 11:16:12 -03:00

3.2 KiB

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SPDX-License-Identifier: GPL-2.0

include ../../scripts/Makefile.include include ../../scripts/utilities.mak # QUIET_CLEAN

ifeq ($(srctree),) srctree := $(patsubst %/,%,$(dir $(CURDIR))) srctree := $(patsubst %/,%,$(dir $(srctree))) srctree := $(patsubst %/,%,$(dir $(srctree))) #$(info Determined 'srctree' to be $(srctree)) endif

CC ?= $(CROSS_COMPILE)gcc AR ?= $(CROSS_COMPILE)ar LD ?= $(CROSS_COMPILE)ld

MAKEFLAGS += --no-print-directory

INSTALL = install

Use DESTDIR for installing into a different root directory.

This is useful for building a package. The program will be

installed in this directory as if it was the root directory.

Then the build tool can move it later.

DESTDIR ?= DESTDIR_SQ = '$(subst ',''',$(DESTDIR))'

LIBFILE = $(OUTPUT)libapi.a

CFLAGS := $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -U_FORTIFY_SOURCE -fPIC

ifeq ($(DEBUG),0) ifeq ($(CC_NO_CLANG), 0) CFLAGS += -O3 else CFLAGS += -O6 endif endif

ifeq ($(DEBUG),0) CFLAGS += -D_FORTIFY_SOURCE endif

Treat warnings as errors unless directed not to

ifneq ($(WERROR),0) CFLAGS += -Werror endif

CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 CFLAGS += -I$(srctree)/tools/lib/api CFLAGS += -I$(srctree)/tools/include

RM = rm -f

API_IN := $(OUTPUT)libapi-in.o

ifeq ($(LP64), 1) libdir_relative = lib64 else libdir_relative = lib endif

prefix ?= libdir = $(prefix)/$(libdir_relative)

Shell quotes

libdir_SQ = $(subst ',''',$(libdir))

all:

export srctree OUTPUT CC LD CFLAGS V include $(srctree)/tools/build/Makefile.include include $(srctree)/tools/scripts/Makefile.include

all: fixdep $(LIBFILE)

$(API_IN): FORCE @$(MAKE) $(build)=libapi

$(LIBFILE): $(API_IN) $(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(API_IN)

define do_install_mkdir if [ ! -d '$(DESTDIR_SQ)$1' ]; then
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1';
fi endef

define do_install if [ ! -d '$2' ]; then
$(INSTALL) -d -m 755 '$2';
fi;
$(INSTALL) $1 $(if $3,-m $3,) '$2' endef

install_lib: $(LIBFILE) $(call QUIET_INSTALL, $(LIBFILE))
$(call do_install_mkdir,$(libdir_SQ));
cp -fpR $(LIBFILE) $(DESTDIR)$(libdir_SQ)

HDRS := cpu.h debug.h io.h FD_HDRS := fd/array.h FS_HDRS := fs/fs.h fs/tracing_path.h INSTALL_HDRS_PFX := $(DESTDIR)$(prefix)/include/api INSTALL_HDRS := $(addprefix $(INSTALL_HDRS_PFX)/, $(HDRS)) INSTALL_FD_HDRS := $(addprefix $(INSTALL_HDRS_PFX)/, $(FD_HDRS)) INSTALL_FS_HDRS := $(addprefix $(INSTALL_HDRS_PFX)/, $(FS_HDRS))

$(INSTALL_HDRS): $(INSTALL_HDRS_PFX)/%.h: %.h $(call QUIET_INSTALL, $@)
$(call do_install,$<,$(INSTALL_HDRS_PFX)/,644)

$(INSTALL_FD_HDRS): $(INSTALL_HDRS_PFX)/fd/%.h: fd/%.h $(call QUIET_INSTALL, $@)
$(call do_install,$<,$(INSTALL_HDRS_PFX)/fd/,644)

$(INSTALL_FS_HDRS): $(INSTALL_HDRS_PFX)/fs/%.h: fs/%.h $(call QUIET_INSTALL, $@)
$(call do_install,$<,$(INSTALL_HDRS_PFX)/fs/,644)

install_headers: $(INSTALL_HDRS) $(INSTALL_FD_HDRS) $(INSTALL_FS_HDRS) $(call QUIET_INSTALL, libapi_headers)

install: install_lib install_headers

clean: $(call QUIET_CLEAN, libapi) $(RM) $(LIBFILE);
find $(or $(OUTPUT),.) -name *.o -or -name *.o.cmd -or -name *.o.d | xargs $(RM)

FORCE:

.PHONY: clean FORCE

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