aboutsummaryrefslogtreecommitdiff
path: root/Makefile
blob: 2d9b3b86d6c5c123db7974a707ef0a058032abaf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
# Copyright (C) 1991, 92, 93, 94, 95, 96, 97 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., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.

#
#	Master Makefile for the GNU C library
#
ifneq (,)
This makefile requires GNU Make.
endif


# This is the default target; it makes everything except the tests.
.PHONY: all
all: lib others

define autoconf-it
@-rm -f $@.new
autoconf $(ACFLAGS) $< > $@.new
chmod a-w,a+x $@.new
mv -f $@.new $@
test ! -d CVS || cvs commit -m'Regenerated: autoconf $(ACFLAGS) $<' $@
endef

configure: configure.in aclocal.m4; $(autoconf-it)
%/configure: %/configure.in aclocal.m4; $(autoconf-it)

include Makeconfig

ifndef avoid-generated
-include $(objpfx)sysd-dirs
define \n


endef
sysdep-subdirs := $(subst $(\n), ,$(sysdep-subdirs))
endif

# These are the subdirectories containing the library source.
subdirs = csu assert ctype db locale intl catgets math setjmp signal stdlib \
	  stdio-common $(stdio) malloc string wcsmbs time dirent grp pwd \
	  posix io termios resource misc login socket sysvipc gmon gnulib \
	  wctype manual shadow md5-crypt nss $(sysdep-subdirs) po argp \
	  $(add-ons) $(binfmt-subdir)
export subdirs := $(subdirs)	# Benign, useless in GNU make before 3.63.

# The mach and hurd subdirectories have many generated header files which
# much of the rest of the library depends on, so it is best to build them
# first (and mach before hurd, at that).  The before-compile additions in
# sysdeps/{mach,hurd}/Makefile should make it reliably work for these files
# not to exist when making in other directories, but it will be slower that
# way with more somewhat expensive `make' invocations.
subdirs	:= $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \
	   $(filter-out mach hurd,$(subdirs))

# All initialization source files.
+subdir_inits	:= $(wildcard $(foreach dir,$(subdirs),$(dir)/init-$(dir).c))
# All subdirectories containing initialization source files.
+init_subdirs	:= $(patsubst %/,%,$(dir $(+subdir_inits)))


# These are the targets that are made by making them in each subdirectory.
+subdir_targets	:= subdir_lib objects objs others subdir_mostlyclean	\
		   subdir_clean subdir_distclean subdir_realclean	\
		   tests subdir_lint.out				\
		   subdir_distinfo					\
		   subdir_echo-headers subdir_echo-distinfo		\
		   subdir_install					\
		   $(addprefix install-, no-libc.a bin lib data headers others)

headers := errno.h sys/errno.h errnos.h limits.h values.h	\
	   features.h gnu-versions.h libc-lock.h xopen_lim.h
aux	 = sysdep $(libc-init) version
before-compile += $(objpfx)version-info.h

echo-headers: subdir_echo-headers

# What to install.
install-others = $(inst_includedir)/gnu/stubs.h
install-bin = glibcbug

ifeq (yes,$(build-shared))
install-others += $(inst_includedir)/gnu/lib-names.h
endif

ifeq (yes,$(gnu-ld))
libc-init = set-init
else
libc-init = munch-init
$(objpfx)munch-init.c: munch.awk munch-tmpl.c $(+subdir_inits)
	awk -f $< subdirs='$(+init_subdirs)' $(word 2,$^) > $@-t
	mv -f $@-t $@
generated := $(generated) munch-init.c
endif

# We have a versioning file for libc.so.
libc-map = libc.map


include Makerules

# Install from subdirectories too.
install: subdir_install

# Create linkfs for shared libraries using the `ldconfig' program is possible.
# Ignore the error if we cannot update /etc/ld.so.cache.
ifeq (no,$(cross-compiling))
ifeq (yes,$(build-shared))
install:
	-test ! -x $(common-objpfx)elf/ldconfig || \
	  $(common-objpfx)elf/ldconfig -d $(inst_slibdir) $(inst_libdir)
endif
endif

# Build subdirectory lib objects.
lib-noranlib: subdir_lib

ifeq (yes,$(build-shared))
# Build the shared object from the PIC object library.
lib: $(common-objpfx)libc.so
endif

all-Subdirs-files = $(wildcard $(addsuffix /Subdirs, $(config-sysdirs)))
$(objpfx)sysd-dirs: $(+sysdir_pfx)config.make $(all-Subdirs-files)
	(echo define sysdep-subdirs;				\
	 sed 's/#.*$$//' $(all-Subdirs-files) /dev/null;	\
	 echo endef) > $@-tmp
	mv -f $@-tmp $@

all-Banner-files = $(wildcard $(addsuffix /Banner, $(subdirs)))
$(objpfx)version-info.h: $(+sysdir_pfx)config.make $(all-Banner-files)
	(case $(config-os) in \
	   linux*) version=`(echo -e "#include <linux/version.h>\nUTS_RELEASE"\
			     | $(CC)  -E -P - | \
			     sed -e 's/"\([^"]*\)".*/\1/p' -e d) 2>/dev/null`;\
		   if [ -z "$$version" ]; then \
		     if [ -r /proc/version ]; then \
		       version=`sed 's/.*version \([^ ]*\) .*/>>\1<</' \
				< /proc/version`; \
		     else \
		       version=`uname -r`; \
		     fi; \
		   fi; \
		   echo -n "\"Compiled on a Linux $$version system "; \
		   echo "on `date +%Y/%m/%d`.\\n\"" ;; \
	   *) ;; \
	 esac; \
	 files="$(all-Banner-files)";				\
	 if test -n "$$files"; then				\
	   echo "\"Available extensions:";			\
	   sed -e '/^#/d' -e 's/^[[:space:]]*/	/' $$files;	\
	   echo "\"";						\
	 fi) > $@T
	mv -f $@T $@
generated += version-info.h

version.c-objects := $(addprefix $(objpfx)version,$(object-suffixes))
$(version.c-objects): $(objpfx)version-info.h

# Makerules creates a file `stub-$(subdir)' for each subdirectory, which
# contains `#define __stub_FUNCTION' for each function which is a stub.
# Here we paste all of these together into <gnu/stubs.h>.

subdir-stubs := $(foreach dir,$(subdirs),$(common-objpfx)stub-$(dir))

# Since stubs.h is never needed when building the library, we simplify the
# hairy installation process by producing it in place only as the last part
# of the top-level `make install'.  It depends on subdir_install, which
# iterates over all the subdirs; subdir_install in each subdir depends on
# the subdir's stubs file.  Having more direct dependencies would result in
# extra iterations over the list for subdirs and many recursive makes.
$(inst_includedir)/gnu/stubs.h: subdir_install
	@rm -f $(objpfx)stubs.h
	(echo '/* This file is automatically generated.';\
	 echo '   It defines a symbol `__stub_FUNCTION'\'' for each function';\
	 echo '   in the C library which is a stub, meaning it will fail';\
	 echo '   every time called, usually setting errno to ENOSYS.  */';\
	 sort $(subdir-stubs)) > $(objpfx)stubs.h
	if test -r $@ && cmp -s $(objpfx)stubs.h $@; \
	then echo 'stubs.h unchanged'; \
	else $(INSTALL_DATA) $(objpfx)stubs.h $@; fi
	rm -f $(objpfx)stubs.h

ifeq (yes,$(build-shared))

$(inst_includedir)/gnu/lib-names.h: $(common-objpfx)gnu/lib-names.h
	if test -r $@ && cmp -s $< $@; \
	then echo 'gnu/lib-names.h unchanged'; \
	else $(INSTALL_DATA) $< $@; fi
endif

# The `glibcbug' script contains the version number and it shall be rebuild
# whenever this changes or the `glibcbug.in' file.
$(objpfx)glibcbug: $(common-objpfx)config.status glibcbug.in
	cd $(<D); CONFIG_FILES=$(@F) CONFIG_HEADERS= $(SHELL) $(<F)

# This makes the Info or DVI file of the documentation from the Texinfo source.
.PHONY: info dvi
info dvi:
	$(MAKE) $(PARALLELMFLAGS) -C manual $@

# This makes all the subdirectory targets.

# For each target, make it depend on DIR/target for each subdirectory DIR.
$(+subdir_targets): %: $(addsuffix /%,$(subdirs))

# Compute a list of all those targets.
all-subdirs-targets := $(foreach dir,$(subdirs),\
				 $(addprefix $(dir)/,$(+subdir_targets)))

# The action for each of those is to cd into the directory and make the
# target there.
$(all-subdirs-targets):
	$(MAKE) $(PARALLELMFLAGS) -C $(@D) $(@F)

.PHONY: $(+subdir_targets) $(all-subdirs-targets)

# Targets to clean things up to various degrees.

.PHONY: clean realclean distclean distclean-1 parent-clean parent-mostlyclean

# Subroutines of all cleaning targets.
parent-mostlyclean: common-mostlyclean # common-mostlyclean is in Makerules.
	-rm -f $(foreach o,$(object-suffixes),\
		   $(common-objpfx)$(patsubst %,$(libtype$o),c)) \
	       $(addprefix $(objpfx),$(install-lib))
parent-clean: parent-mostlyclean common-clean
	-rm -f $(addprefix $(common-objpfx),$(common-generated))
	-rm -f $(addprefix $(objpfx),sysd-Makefile sysd-dirs sysd-rules)

clean: parent-clean
# This is done this way rather than having `subdir_clean' be a
# dependency of this target so that libc.a will be removed before the
# subdirectories are dealt with and so they won't try to remove object
# files from it when it's going to be removed anyway.
	@$(MAKE) subdir_clean no_deps=t
mostlyclean: parent-mostlyclean
	@$(MAKE) subdir_mostlyclean no_deps=t

# The realclean target is just like distclean for the parent, but we want
# the subdirs to know the difference in case they care.
realclean distclean: parent-clean
# This is done this way rather than having `subdir_distclean' be a
# dependency of this target so that libc.a will be removed before the
# subdirectories are dealt with and so they won't try to remove object
# files from it when it's going to be removed anyway.
	@$(MAKE) distclean-1 no_deps=t distclean-1=$@ avoid-generated=yes

# Subroutine of distclean and realclean.
distclean-1: subdir_$(distclean-1)
	-rm -f $(config-generated)
	-rm -f $(addprefix $(objpfx),config.status config.cache config.log)
	-rm -f $(addprefix $(objpfx),config.make config-name.h config.h)
ifdef objdir
	-rm -f $(objpfx)Makefile
endif
	-rm -f $(sysdep-$(distclean-1))

.PHONY: echo_subdirs
echo_subdirs:;@echo '$(subdirs)'

.PHONY: echo-distinfo parent_echo-distinfo
echo-distinfo: parent_echo-distinfo subdir_echo-distinfo
parent_echo-distinfo:
	@echo $(addprefix +header+,$(headers)) \
	      $(addprefix +nodist+,$(generated))


.PHONY: parent-tests
tests: parent-tests

# Run a test on the header files we use.
parent-tests: $(objpfx)isomac
	$(dir $<)$(notdir $<) '$(CC)' '$(+sysdep-includes)' > $<.out

$(objpfx)isomac: isomac.c
	$(native-compile)

# Make the distribution tarfile.

distribute  := README INSTALL FAQ NOTES NEWS PROJECTS BUGS		\
	       COPYING.LIB COPYING ChangeLog ChangeLog.[0-9]		\
	       Makefile Makeconfig Makerules Rules Make-dist MakeTAGS	\
	       extra-lib.mk o-iterator.mk isomac.c			\
	       ansidecl.h mkinstalldirs move-if-change install-sh	\
	       configure configure.in aclocal.m4 config.sub config.guess\
	       config.h.in config.make.in config-name.in Makefile.in	\
	       autolock.sh rellns-sh munch-tmpl.c munch.awk interp.c	\
	       sysdep.h set-hooks.h libc-symbols.h version.h shlib-versions \
	       rpm/Makefile rpm/template rpm/rpmrc glibcbug.in

distribute := $(strip $(distribute))
generated := $(generated) stubs.h version-info.h

README: README.template version.h ; # Make-dist should update README.

define format-me
@rm -f $@
makeinfo --no-validate --no-warn --no-headers $< -o $@
-chmod a-w $@
endef
INSTALL: manual/maint.texi; $(format-me)
NOTES: manual/creature.texi; $(format-me)
manual/dir-add.texi manual/dir-add.info: FORCE
	$(MAKE) $(PARALLELMFLAGS) -C $(@D) $(@F)
FORCE:

rpm/%: subdir_distinfo
	$(MAKE) $(PARALLELMFLAGS) -C $(@D) subdirs='$(subdirs)' $(@F)

# This is a special goal for people making binary distributions.  Normally
# everybody uses the DES based crypt library but for the distribution we
# need the only-MD5 based one as well.
md5-crypt/libmd5crypt:
	$(MAKE) $(PARALLELMFLAGS) -C $(@D) $(@F)