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glibc/Rules
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# Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc. | |
# This file is part of the GNU C Library. | |
# The GNU C Library is free software; you can redistribute it and/or | |
# modify it under the terms of the GNU Library General Public License as | |
# published by the Free Software Foundation; either version 2 of the | |
# License, or (at your option) any later version. | |
# The GNU C Library is distributed in the hope that it will be useful, | |
# but WITHOUT ANY WARRANTY; without even the implied warranty of | |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
# Library General Public License for more details. | |
# You should have received a copy of the GNU Library General Public | |
# License along with the GNU C Library; see the file COPYING.LIB. If | |
# not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
# Cambridge, MA 02139, USA. | |
# | |
# Rules for making a subdirectory in the GNU C library. | |
# Each subdirectory Makefile defines some variables and includes this. | |
# | |
ifneq (,) | |
This makefile requires GNU Make. | |
endif | |
all: # Don't let the default goal come from Makeconfig. | |
include ../Makeconfig | |
ifndef subdir | |
Each subdirectory makefile must define the `subdir' variable. | |
endif | |
# This is benign and useless in GNU make before 3.63. | |
export subdir := $(subdir) | |
# This is the default target; it makes the library and auxiliary programs. | |
.PHONY: all | |
all: objs lib others | |
others: $(addprefix $(objpfx),$(extra-objs) \ | |
$(install-lib) $(install-bin) \ | |
$(install-rootsbin) $(install-sbin)) | |
ifneq "$(findstring env,$(origin headers))" "" | |
headers := | |
endif | |
ifneq "$(findstring env,$(origin generated))" "" | |
generated := | |
endif | |
ifneq "$(findstring env,$(origin common-generated))" "" | |
common-generated := | |
endif | |
ifeq "$(strip $(headers))" "" | |
ifneq "$(wildcard $(subdir).h)" "" | |
override headers := $(subdir).h | |
endif | |
endif | |
include ../Makerules | |
.PHONY: subdir_lib | |
subdir_lib: lib-noranlib | |
# Some subdirs need to install a dummy library. | |
# They can use "$(objpfx)libfnord.a: $(dep-dummy-lib); $(make-dummy-lib)". | |
dep-dummy-lib = $(common-objpfx)dummy.o | |
define make-dummy-lib | |
$(AR) cr$(verbose) $@ $< | |
endef | |
$(common-objpfx)dummy.c: | |
rm -f $@ | |
echo 'void __dummy__ (void) { }' > $@ | |
$(common-objpfx)empty.c: | |
cp -f /dev/null $@ | |
common-generated := $(common-generated) dummy.o dummy.c empty.c empty.o | |
# This makes all the auxiliary and test programs. | |
.PHONY: others tests | |
others: $(addprefix $(objpfx),$(others) $(extra-objs)) | |
ifeq ($(cross-compiling),yes) | |
tests: $(addprefix $(objpfx),$(tests)) | |
else | |
tests: $(tests:%=$(objpfx)%.out) | |
endif | |
ifneq "$(strip $(others) $(tests))" "" | |
$(addprefix $(objpfx),$(others) $(tests)): %: %.o \ | |
$(sort $(filter $(common-objpfx)libc%,$(link-libc))) \ | |
$(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit) | |
$(+link) | |
endif | |
ifneq "$(strip $(tests))" "" | |
# These are the implicit rules for making test outputs | |
# from the test programs and whatever input files are present. | |
$(objpfx)%.out: %.args $(objpfx)% %.input | |
$($*-ENV) $(built-program-cmd) `cat $(word 1,$^)` < $(word 3,$^) > $@ | |
$(objpfx)%.out: %.args $(objpfx)% | |
$($*-ENV) $(built-program-cmd) `cat $(word 1,$^)` > $@ | |
$(objpfx)%.out: %.input $(objpfx)% | |
$($*-ENV) $(built-program-cmd) < $(word 1,$^) > $@ | |
$(objpfx)%.out: /dev/null $(objpfx)% # Make it 2nd arg for canned sequence. | |
$($*-ENV) $(built-program-cmd) > $@ | |
endif # tests | |
.PHONY: distclean realclean subdir_distclean subdir_realclean \ | |
subdir_clean subdir_mostlyclean | |
subdir_mostlyclean: mostlyclean | |
subdir_clean: clean | |
subdir_distclean: distclean | |
subdir_realclean: realclean | |
realclean: distclean | |
distclean: clean | |
.PHONY: subdir_echo-headers | |
subdir_echo-headers: echo-headers | |
.PHONY: subdir_echo-distinfo | |
subdir_echo-distinfo: | |
@echo $(addprefix +header+,$(headers)) \ | |
$(addprefix +nodist+,$(generated) $(common-generated) $(dont_distribute)) | |
# We want to install everything except the library itself, but update all | |
# our portions of the library because the parent make will install it later | |
# (likewise the stubs file). | |
.PHONY: subdir_install | |
subdir_install: install-no-libc.a lib-noranlib stubs | |
.PHONY: subdir_TAGS subdir_dist | |
subdir_TAGS: TAGS | |
subdir_dist: dist | |
# Convenient target to update all the generated source files. | |
.PHONY: generated | |
generated: $(addprefix $(common-objpfx),$(common-generated)) \ | |
$(addprefix $(objpfx),$(generated)) | |
ifndef libc.so-version | |
# Undefine this because it can't work when we libc.so is unversioned. | |
static-only-routines = | |
endif | |
ifdef static-only-routines | |
# These routines are to be omitted from the shared library object, | |
# so we replace the PIC objects for them with the empty object file. | |
$(static-only-routines:%=$(objpfx)%.so): %.so: $(common-objpfx)empty.o | |
rm -f $@ | |
ln $< $@ | |
endif |