1 # Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98 Free Software Foundation, Inc.
2 # This file is part of the GNU C Library.
4 # The GNU C Library is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU Library General Public License as
6 # published by the Free Software Foundation; either version 2 of the
7 # License, or (at your option) any later version.
9 # The GNU C Library is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # Library General Public License for more details.
14 # You should have received a copy of the GNU Library General Public
15 # License along with the GNU C Library; see the file COPYING.LIB. If not,
16 # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 # Boston, MA 02111-1307, USA.
20 # Rules for making a subdirectory in the GNU C library.
21 # Each subdirectory Makefile defines some variables and includes this.
24 This makefile requires GNU Make.
27 all: # Don't let the default goal come from Makeconfig.
32 Each subdirectory makefile must define the `subdir' variable.
34 # This is benign and useless in GNU make before 3.63.
35 export subdir := $(subdir)
37 # This is the default target; it makes the library and auxiliary programs.
41 ifeq ($(build-programs),yes)
42 others: $(addprefix $(objpfx),$(extra-objs) \
43 $(install-lib) $(install-bin) \
44 $(install-rootsbin) $(install-sbin))
46 others: $(addprefix $(objpfx),$(extra-objs) \
50 ifneq "$(findstring env,$(origin headers))" ""
54 ifneq "$(findstring env,$(origin generated))" ""
58 ifneq "$(findstring env,$(origin common-generated))" ""
65 subdir_lib: lib-noranlib
67 # Some subdirs need to install a dummy library.
68 # They can use "$(objpfx)libfnord.a: $(dep-dummy-lib); $(make-dummy-lib)".
69 dep-dummy-lib = $(common-objpfx)dummy.o
71 $(AR) cr$(verbose) $@ $<
74 $(common-objpfx)dummy.c:
76 echo 'void __dummy__ (void) { }' > $@
77 $(common-objpfx)empty.c:
79 common-generated += dummy.o dummy.c empty.c \
80 $(addprefix empty,$(object-suffixes))
82 # This makes all the auxiliary and test programs.
85 ifeq ($(build-programs),yes)
86 others: $(addprefix $(objpfx),$(others) $(extra-objs))
88 others: $(addprefix $(objpfx),$(extra-objs))
90 ifeq ($(cross-compiling),yes)
91 tests: $(addprefix $(objpfx),$(tests) $(test-srcs))
93 tests: $(tests:%=$(objpfx)%.out)
96 ifeq ($(build-programs),yes)
97 ifneq "$(strip $(others) $(tests) $(test-srcs))" ""
98 $(addprefix $(objpfx),$(others) $(tests) $(test-srcs)): %: %.o \
99 $(sort $(filter $(common-objpfx)libc%,$(link-libc))) \
100 $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
104 ifneq "$(strip $(tests) $(test-srcs))" ""
105 $(addprefix $(objpfx),$(tests) $(test-srcs)): %: %.o \
106 $(sort $(filter $(common-objpfx)libc%,$(link-libc))) \
107 $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
112 ifneq "$(strip $(tests) $(test-srcs))" ""
113 # These are the implicit rules for making test outputs
114 # from the test programs and whatever input files are present.
115 $(objpfx)%.out: %.args $(objpfx)% %.input
116 $($*-ENV) $(built-program-cmd) `cat $(word 1,$^)` < $(word 3,$^) > $@
117 $(objpfx)%.out: %.args $(objpfx)%
118 $($*-ENV) $(built-program-cmd) `cat $(word 1,$^)` > $@
119 $(objpfx)%.out: %.input $(objpfx)%
120 $($*-ENV) $(built-program-cmd) < $(word 1,$^) > $@
121 $(objpfx)%.out: /dev/null $(objpfx)% # Make it 2nd arg for canned sequence.
122 $($*-ENV) $(built-program-cmd) > $@
125 .PHONY: distclean realclean subdir_distclean subdir_realclean \
126 subdir_clean subdir_mostlyclean
127 subdir_mostlyclean: mostlyclean
129 subdir_distclean: distclean
130 subdir_realclean: realclean
134 .PHONY: subdir_echo-headers
135 subdir_echo-headers: echo-headers
137 .PHONY: subdir_echo-distinfo
138 subdir_echo-distinfo:
139 @echo $(addprefix +header+,$(headers) $(filter %.h,$(distribute))) \
140 $(addprefix +nodist+,$(generated) $(common-generated) $(dont_distribute))
142 # We want to install everything except the library itself, but update all
143 # our portions of the library because the parent make will install it later
144 # (likewise the stubs file).
145 .PHONY: subdir_install
146 subdir_install: install-no-libc.a lib-noranlib stubs
148 .PHONY: subdir_TAGS subdir_dist
152 # Convenient target to update all the generated source files.
154 generated: $(addprefix $(common-objpfx),$(common-generated)) \
155 $(addprefix $(objpfx),$(generated))
157 define o-iterator-doit
158 $(common-objpfx)empty$o: $(common-objpfx)empty.c $(before-compile);
159 $$(compile-command.c)
161 object-suffixes-left := $(object-suffixes)
162 include $(o-iterator)
164 define o-iterator-doit
165 $(common-objpfx)dummy$o: $(common-objpfx)dummy.c $(before-compile);
166 $$(compile-command.c)
168 object-suffixes-left := $(object-suffixes)
169 include $(o-iterator)
171 ifndef libc.so-version
172 # Undefine this because it can't work when we libc.so is unversioned.
173 static-only-routines =
176 ifdef static-only-routines
177 # These routines are to be omitted from the shared library object,
178 # so we replace the PIC objects for them with the empty object file.
179 $(static-only-routines:%=$(objpfx)%.os): %.os: $(common-objpfx)empty.os
183 # Must build the routines as PIC, though, because they can end up in (users')
184 # shared objects. We don't want to use CFLAGS-os because users may, for
185 # example, make that processor-specific.
186 $(static-only-routines:%=$(objpfx)%.o): $(objpfx)%.o: %.c $(before-compile)
187 $(compile.c) $(pic-ccflag) $(OUTPUT_OPTION)
190 ifdef shared-only-routines
191 # If we have versioned code we don't need the old versions in any of the
193 define o-iterator-doit
194 $(shared-only-routines:%=$(objpfx)%$o): %$o: $(common-objpfx)empty$o;
198 object-suffixes-left := $(filter-out .os,$(object-suffixes))
199 include $(o-iterator)