1 # Copyright (C) 1991, 1992, 1993, 1994, 1995 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 := $(subdir)
37 # This is the default target; it makes the library and auxiliary programs.
41 ifneq "$(findstring env,$(origin headers))" ""
45 ifneq "$(findstring env,$(origin generated))" ""
49 ifeq "$(strip $(headers))" ""
50 ifneq "$(wildcard $(subdir).h)" ""
51 override headers := $(subdir).h
58 subdir_lib: lib-noranlib
60 # Some subdirs need to install a dummy library.
61 # They can use "$(objpfx)libfnord.a: $(dep-dummy-lib); $(make-dummy-lib)".
62 dep-dummy-lib = $(objpfx)dummy.o
64 $(AR) cr$(verbose) $@ $<
68 echo 'void __dummy__ () { }' > $(@:.o=.c)
69 $(CC) -c $(@:.o=.c) -o $@
71 # This makes all the auxilliary and test programs.
74 others: $(addprefix $(objpfx),$(others))
75 ifeq ($(cross-compiling),yes)
76 tests: $(addprefix $(objpfx),$(tests))
78 tests: $(tests:%=$(objpfx)%.out)
81 ifneq "$(strip $(others) $(tests))" ""
82 $(addprefix $(objpfx),$(others) $(tests)): %: %.o $(libc.a)
86 ifneq "$(strip $(tests))" ""
87 # These are the implicit rules for making test outputs
88 # from the test programs and whatever input files are present.
89 $(objpfx)%.out: $(objpfx)% %.args %.input
90 $(dir $<)$(notdir $<) `cat $(word 2,$^)` < $(word 3,$^) > $@
91 $(objpfx)%.out: $(objpfx)% %.args
92 $(dir $<)$(notdir $<) `cat $(word 2,$^)` > $@
93 $(objpfx)%.out: $(objpfx)% %.input
94 $(dir $<)$(notdir $<) < $(word 2,$^) > $@
95 $(objpfx)%.out: $(objpfx)%
96 $(dir $<)$(notdir $<) > $@
99 .PHONY: distclean realclean subdir_distclean subdir_realclean \
100 subdir_clean subdir_mostlyclean
101 subdir_mostlyclean: mostlyclean
103 subdir_distclean: distclean
104 subdir_realclean: realclean
108 .PHONY: subdir_echo-headers
109 subdir_echo-headers: echo-headers
111 .PHONY: subdir_echo-distinfo
112 subdir_echo-distinfo:
113 @echo $(addprefix +header+,$(headers)) \
114 $(addprefix +nodist+,$(generated) $(dont_distribute))
116 # We want to install everything except the library itself, but update all
117 # our portions of the library because the parent make will install it later
118 # (likewise the stubs file).
119 .PHONY: subdir_install
120 subdir_install: install-no-libc.a lib-noranlib stubs
122 .PHONY: subdir_TAGS subdir_dist
126 # Convenient target to update all the generated source files.
128 generated: $(addprefix $(objpfx),$(generated))