1 # Copyright (C) 1991, 92, 93, 94, 95, 96 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
16 # not, write to the Free Software Foundation, Inc., 675 Mass Ave,
17 # Cambridge, MA 02139, 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 others: $(addprefix $(objpfx),$(extra-objs) \
42 $(install-lib) $(install-bin) \
43 $(install-rootsbin) $(install-sbin))
45 ifneq "$(findstring env,$(origin headers))" ""
49 ifneq "$(findstring env,$(origin generated))" ""
53 ifneq "$(findstring env,$(origin common-generated))" ""
57 ifeq "$(strip $(headers))" ""
58 ifneq "$(wildcard $(subdir).h)" ""
59 override headers := $(subdir).h
66 subdir_lib: lib-noranlib
68 # Some subdirs need to install a dummy library.
69 # They can use "$(objpfx)libfnord.a: $(dep-dummy-lib); $(make-dummy-lib)".
70 dep-dummy-lib = $(common-objpfx)dummy.o
72 $(AR) cr$(verbose) $@ $<
74 $(common-objpfx)dummy.c:
76 echo 'void __dummy__ (void) { }' > $@
77 $(common-objpfx)empty.c:
79 common-generated := $(common-generated) dummy.o dummy.c empty.c empty.o
81 # This makes all the auxiliary and test programs.
84 others: $(addprefix $(objpfx),$(others) $(extra-objs))
85 ifeq ($(cross-compiling),yes)
86 tests: $(addprefix $(objpfx),$(tests) $(test-srcs))
88 tests: $(tests:%=$(objpfx)%.out) $(addprefix $(objpfx),$(test-srcs))
91 ifneq "$(strip $(others) $(tests) $(test-srcs))" ""
92 $(addprefix $(objpfx),$(others) $(tests) $(test-srcs)): %: %.o \
93 $(sort $(filter $(common-objpfx)libc%,$(link-libc))) \
94 $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
98 ifneq "$(strip $(tests) $(test-srcs))" ""
99 # These are the implicit rules for making test outputs
100 # from the test programs and whatever input files are present.
101 $(objpfx)%.out: %.args $(objpfx)% %.input
102 $($*-ENV) $(built-program-cmd) `cat $(word 1,$^)` < $(word 3,$^) > $@
103 $(objpfx)%.out: %.args $(objpfx)%
104 $($*-ENV) $(built-program-cmd) `cat $(word 1,$^)` > $@
105 $(objpfx)%.out: %.input $(objpfx)%
106 $($*-ENV) $(built-program-cmd) < $(word 1,$^) > $@
107 $(objpfx)%.out: /dev/null $(objpfx)% # Make it 2nd arg for canned sequence.
108 $($*-ENV) $(built-program-cmd) > $@
111 .PHONY: distclean realclean subdir_distclean subdir_realclean \
112 subdir_clean subdir_mostlyclean
113 subdir_mostlyclean: mostlyclean
115 subdir_distclean: distclean
116 subdir_realclean: realclean
120 .PHONY: subdir_echo-headers
121 subdir_echo-headers: echo-headers
123 .PHONY: subdir_echo-distinfo
124 subdir_echo-distinfo:
125 @echo $(addprefix +header+,$(headers)) \
126 $(addprefix +nodist+,$(generated) $(common-generated) $(dont_distribute))
128 # We want to install everything except the library itself, but update all
129 # our portions of the library because the parent make will install it later
130 # (likewise the stubs file).
131 .PHONY: subdir_install
132 subdir_install: install-no-libc.a lib-noranlib stubs
134 .PHONY: subdir_TAGS subdir_dist
138 # Convenient target to update all the generated source files.
140 generated: $(addprefix $(common-objpfx),$(common-generated)) \
141 $(addprefix $(objpfx),$(generated))
143 ifndef libc.so-version
144 # Undefine this because it can't work when we libc.so is unversioned.
145 static-only-routines =
148 ifdef static-only-routines
149 # These routines are to be omitted from the shared library object,
150 # so we replace the PIC objects for them with the empty object file.
151 $(static-only-routines:%=$(objpfx)%.so): %.so: $(common-objpfx)empty.o