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