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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) $(install-sbin))
ifneq "$(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
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