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 # Common rules for making the GNU C library. This file is included
21 # by the top-level Makefile and by all subdirectory makefiles
25 This makefile requires GNU Make.
33 # If `sources' was defined by the parent makefile, undefine it so
34 # we will later get it from wildcard search in this directory.
35 ifneq "$(findstring env,$(origin sources))" ""
39 headers := $(headers) $(sysdep_headers)
42 PATH := this definition should take precedence over $(oPATH)
43 ifeq ($(PATH),$(oPATH))
44 You must not use the -e flag when building the GNU C library.
49 ifndef +included-Makeconfig
50 include $(..)Makeconfig
53 # `configure' writes a definition of `config-sysdirs' in `config.make'.
54 sysdirs = $(config-sysdirs)
56 +sysdir_pfx = $(common-objpfx)
58 export sysdirs := $(sysdirs)
60 +sysdep_dirs := $(addprefix $(sysdep_dir)/,$(sysdirs))
62 +sysdep_dirs := $(objdir) $(+sysdep_dirs)
65 # Add -I switches to get the right sysdep directories.
66 # `+includes' in Makeconfig references $(+sysdep-includes).
67 +sysdep-includes := $(addprefix -I,$(+sysdep_dirs))
69 # The name of the symbol table archive member. The default is suitable for
70 # BSD style archives. It can be overridden in sysdep Makefiles when SYSV
71 # style archive are used.
73 ar-symtab-name = __.SYMDEF
75 ar-symtab-name = # The null name is used in ELF archives.
78 # Include any system-specific makefiles.
80 # This is here so things in sysdep Makefiles can easily depend on foo.h as
81 # appropriate and not worry about where foo.h comes from, which may be
82 # system dependent and not known by that Makefile.
83 vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) \
84 $(addprefix $(sysdep_dir)/,$(sysdirs)) \
87 # Some sysdep makefiles use this to distinguish being included here from
88 # being included individually by a subdir makefile (hurd/Makefile needs this).
91 ifndef avoid-generated
92 -include $(+sysdir_pfx)sysd-Makefile
93 ifneq ($(sysd-Makefile-sysdirs),$(sysdirs))
94 sysd-Makefile-force = FORCE
97 $(+sysdir_pfx)sysd-Makefile: $(+sysdir_pfx)config.make $(..)Makerules \
98 $(sysd-Makefile-force)
100 (echo 'sysd-Makefile-sysdirs := $(sysdirs)'; \
101 for dir in $(sysdirs); do \
102 file=sysdeps/$$dir/Makefile; \
103 if [ -f $(..)$$file ]; then \
104 echo include "\$$(..)$$file"; \
107 echo 'sysd-Makefile-done=t') > $@T
111 ifndef sysd-Makefile-done
112 # Don't do deps until this exists, because it might change the sources list.
117 # Reorder before-compile so that mach things come first, and hurd things
118 # second, before all else. The mach and hurd subdirectories have many
119 # generated header files which the much of rest of the library depends on,
120 # so it is best to build them first (and mach before hurd, at that).
121 before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
123 $(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
126 # Remove existing files from `before-compile'. Things are added there when
127 # they must exist for dependency generation to work right, but once they
128 # exist there is no further need for every single file to depend on them,
129 # and those gratuitous dependencies result in many gratuitous
131 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
133 # Don't let any before-compile file be an intermediate and get removed.
138 # Generate an ordered list of implicit rules which find the source files in
139 # each sysdep directory. The old method was to use vpath to search all the
140 # sysdep directories. However, that had the problem that a .S file in a
141 # later directory would be chosen over a .c file in an earlier directory,
142 # which does not preserve the desired sysdeps ordering behavior.
144 # When making the list of .d files to include, we can't know which ones
145 # have source in .s files, and thus do not in fact need a .d file.
146 # So we must define rules to make .d files for .s files.
147 define make-dummy-dep
148 $(addprefix ln $(objpfx)dummy.d ,$(filter-out $(wildcard $@),$@))
151 echo '# .s files cannot contain includes, so they need no deps.' > $@
153 # It matters that this set of rules, for compiling from sources in
154 # the current directory (the $srcdir/$subdir) come before the
155 # generated sysdep rules in included from sysd-rules below. When
156 # compiling in the source tree, generated sources go into the current
157 # directory, and those should be chosen before any sources in sysdeps.
158 $(objpfx)%.o: %.S $(before-compile); $(compile-command.S)
159 $(objpfx)%.so: %.S $(before-compile); $(compile-command.S)
160 $(objpfx)%.po: %.S $(before-compile); $(compile-command.S)
161 $(objpfx)%.go: %.S $(before-compile); $(compile-command.S)
162 $(objpfx)%.d: %.S $(before-compile); $(+make-deps)
163 $(objpfx)%.o: %.s $(before-compile); $(compile-command.s)
164 $(objpfx)%.so: %.s $(before-compile); $(compile-command.s)
165 $(objpfx)%.po: %.s $(before-compile); $(compile-command.s)
166 $(objpfx)%.go: %.s $(before-compile); $(compile-command.s)
167 $(objpfx)%.d: %.s $(objpfx)dummy.d; $(make-dummy-dep)
168 $(objpfx)%.o: %.c $(before-compile); $(compile-command.c)
169 $(objpfx)%.so: %.c $(before-compile); $(compile-command.c)
170 $(objpfx)%.po: %.c $(before-compile); $(compile-command.c)
171 $(objpfx)%.go: %.c $(before-compile); $(compile-command.c)
172 $(objpfx)%.d: %.c $(before-compile); $(+make-deps)
174 # Omit the objpfx rules when building in the source tree, because
175 # objpfx is empty and so these rules just override the ones above.
177 # Define first rules to find the source files in $(objpfx).
178 # Generated source files will end up there.
179 $(objpfx)%.o: $(objpfx)%.S $(before-compile); $(compile-command.S)
180 $(objpfx)%.so: $(objpfx)%.S $(before-compile); $(compile-command.S)
181 $(objpfx)%.po: $(objpfx)%.S $(before-compile); $(compile-command.S)
182 $(objpfx)%.go: $(objpfx)%.S $(before-compile); $(compile-command.S)
183 $(objpfx)%.d: $(objpfx)%.S $(before-compile); $(+make-deps)
184 $(objpfx)%.o: $(objpfx)%.s $(before-compile); $(compile-command.s)
185 $(objpfx)%.so: $(objpfx)%.s $(before-compile); $(compile-command.s)
186 $(objpfx)%.po: $(objpfx)%.s $(before-compile); $(compile-command.s)
187 $(objpfx)%.go: $(objpfx)%.s $(before-compile); $(compile-command.s)
188 $(objpfx)%.d: $(objpfx)%.s $(objpfx)dummy.d; $(make-dummy-dep)
189 $(objpfx)%.o: $(objpfx)%.c $(before-compile); $(compile-command.c)
190 $(objpfx)%.so: $(objpfx)%.c $(before-compile); $(compile-command.c)
191 $(objpfx)%.po: $(objpfx)%.c $(before-compile); $(compile-command.c)
192 $(objpfx)%.go: $(objpfx)%.c $(before-compile); $(compile-command.c)
193 $(objpfx)%.d: $(objpfx)%.c $(before-compile); $(+make-deps)
196 # System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
197 # patterns matching sysdep directories whose assembly source files should
199 ifdef inhibit-sysdep-asm
200 define open-check-inhibit-asm
201 case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
203 close-check-inhibit-asm = ;; esac ;
206 # Don't include sysd-rules until sysd-Makefile is already there and has been
207 # included. It might define inhibit-sysdep-asm, which would affect the
208 # contents of sysd-rules.
209 ifdef sysd-Makefile-done
210 -include $(+sysdir_pfx)sysd-rules
211 ifneq ($(sysd-rules-sysdirs),$(sysdirs))
212 # The value of $(sysdirs) the sysd-rules was computed for
213 # differs from the one we are using now. So force a rebuild of sysd-rules.
214 sysd-rules-force = FORCE
218 $(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
219 $(wildcard $(foreach dir,$(sysdirs),\
220 $(sysdep_dir)/$(dir)/Makefile))\
223 (echo 'sysd-rules-sysdirs := $(sysdirs)'; \
224 for sysdir in $(sysdirs); do \
225 dir="\$$(sysdep_dir)/$$sysdir"; \
226 for o in $(object-suffixes); do \
227 $(open-check-inhibit-asm) \
228 echo "\$$(objpfx)%$$o: $$dir/%.S \$$(before-compile); \
229 \$$(compile-command.S)"; \
230 echo "\$$(objpfx)%$$o: $$dir/%.s \$$(before-compile); \
231 \$$(compile-command.s)"; \
232 $(close-check-inhibit-asm) \
233 echo "\$$(objpfx)%$$o: $$dir/%.c \$$(before-compile); \
234 \$$(compile-command.c)"; \
236 $(open-check-inhibit-asm) \
237 echo "\$$(objpfx)%.d: $$dir/%.s \$$(objpfx)dummy.d; \
238 \$$(make-dummy-dep)"; \
239 echo "\$$(objpfx)%.d: $$dir/%.S \$$(before-compile); \
241 $(close-check-inhibit-asm) \
242 echo "\$$(objpfx)%.d: $$dir/%.c \$$(before-compile); \
245 echo 'sysd-rules-done = t') > $@T
248 ifndef sysd-rules-done
249 # Don't do deps until this exists, because it provides rules to make the deps.
254 ifndef compile-command.S
255 compile-command.S = $(compile.S) $(OUTPUT_OPTION)
257 ifndef compile-command.s
258 compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION)
260 ifndef compile-command.c
261 compile-command.c = $(compile.c) $(OUTPUT_OPTION)
264 # GCC can grok options after the file name, and it looks nicer that way.
265 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
266 compile.S = $(CC) $< -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS)
267 COMPILE.S = $(CC) -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS)
268 COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
270 # We need this for the output to go in the right place. It will default to
271 # empty if make was configured to work with a cc that can't grok -c and -o
272 # together. You can't compile the C library with such a compiler.
273 OUTPUT_OPTION = -o $@
275 S-CPPFLAGS = $(asm-CPPFLAGS)
278 $(+mkdep) $< $(CPPFLAGS) $($(<:$*.%=%)-CPPFLAGS) | \
279 sed -e 's,$(subst .,\.,$*)\.o,$(foreach o,$(object-suffixes),$(@:.d=$o)) $@,' \
280 $(sed-remove-objpfx) > $(@:.d=.T)
284 sed-remove-objpfx = -e 's@ $(subst .,\., \
285 $(subst @,\@,$(objpfx)))@ $$(objpfx)@g' \
286 -e 's@^$(subst .,\.,$(subst @,\@,$(objpfx)))@$$(objpfx)@g'
289 # Figure out the source filenames in this directory.
291 override sources := $(addsuffix .c,$(filter-out $(elided-routines),\
294 sysdep_routines := $(sysdep_routines)
296 # This is the list of all object files, gotten by
297 # replacing every ".c" in `sources' with a ".o".
298 override objects := $(addprefix $(objpfx),$(sources:.c=.o))
301 # This variable is used in ``include $(o-iterator)'' after defining
302 # $(o-iterator-doit) to produce some desired rule using $o for the object
303 # suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy
304 # is produced for each object suffix in use.
305 o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes))
307 # The makefile may define $(extra-libs) with `libfoo libbar'
308 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
310 # extra-lib.mk is included once for each extra lib to define rules
311 # to build it, and to add its objects to the various variables.
312 # During its evaluation, $(lib) is set to the name of the library.
313 extra-libs-left := $(extra-libs)
314 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
317 +depfiles := $(strip $(sources:.c=.d) \
318 $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.so=.o))) \
319 $(addsuffix .d,$(others) $(tests)))
320 +depfiles := $(addprefix $(objpfx),\
321 $(filter-out $(addsuffix .d,$(omit-deps)),\
326 -include $(+depfiles)
330 # Maximize efficiency by minimizing the number of rules.
331 .SUFFIXES: # Clear the suffix list.
332 # Add the suffixes we use.
333 .SUFFIXES: .a $(object-suffixes) .S .s .c .h .d
335 # Generic rule for making directories.
337 # mkdir isn't smart enough to strip a trailing /.
340 # Make sure that object files are not removed
341 # when they are intermediates between sources and library members.
342 .PRECIOUS: $(addprefix $(objpfx)%,$(object-suffixes))
344 # Make sure that the parent library archive is never removed.
345 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
347 # Use the verbose option of ar and tar when not running silently.
348 ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
354 ARFLAGS := r$(verbose)
356 # This makes all the object files in the parent library archive.
358 .PHONY: lib libobjs lib-noranlib
359 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
361 # Pattern rule for libraries: depend on the __.SYMDEF member updated by ranlib.
362 lib%.a: lib%.a($(ar-symtab-name)) ;
364 libobjs: $(foreach o,$(object-suffixes),\
365 $(common-objpfx)$(patsubst %,$(libtype$o),c)(\
366 $(notdir $(objects:.o=$o))))
367 lib-noranlib: libobjs
368 others: $(addprefix $(objpfx),$(install-lib))
372 # Define a pattern rule that will match many targets libc.a(foo.%), for
373 # each foo.o in $(objects) (% will just happen always to match `o'). This is
374 # the only way to define a rule that updates many targets at once with one
375 # sequence of commands. We in fact define the pattern rule to match
376 # targets libc.a(foo.%), libc_pic.a(foo.%), etc, to avoid repeating the rule.
377 # Each match will only ever be called upon to make member objects of
378 # the appropriate type in each library (i.e. libc_pic.a(foo.so)).
379 $(foreach l,$(libtypes),\
380 $(common-objpfx)$(patsubst %,$l,c)($(notdir $(objects:.o=.%)))): \
381 $(objpfx)stamp.%-$(subdir) ;
383 # The pattern rule tells Make to remake $(objpfx)stamp.%-$(subdir) as
384 # the way to update all the foo.% object files in $(objects).
385 # Now we define a static pattern rule to update each
386 # $(objpfx)stamp.SUFFIX-$(subdir) timestamp file;
387 # these rules (one explicit rule is generated for each object suffix)
388 # will update the parent archive with
389 $(foreach o,$(object-suffixes),$(objpfx)stamp$o-$(subdir)): \
390 $(objpfx)stamp%-$(subdir): $(objects:.o=%)
391 $(patsubst %,cd %;,$(objdir)) \
392 $(AR) cru$(verbose) ${O%-lib} \
393 $(patsubst $(objpfx)%,%,$^)
394 # `touch' won't let me touch a world-writable file I don't own. Sigh.
398 O%-lib = $(filter ../,$(firstword $(objdir) ../))$(patsubst %,$(libtype$*),c)
400 O%-lib = $(patsubst %,$(libtype$*),c)
405 # Rules to update the $(ar-symtab-name) member with ranlib,
406 # one for each object flavor.
407 define o-iterator-doit
408 $(common-objpfx)$(patsubst %,$(libtype$o),c)($(ar-symtab-name)): \
409 $(common-objpfx)$(patsubst %,$(libtype$o),c)(\
410 $(patsubst $(objpfx)%.o,%$o,$(objects))) \
411 $(filter subdir_lib,$(firstword $(subdir) subdir_lib)); \
412 $$(RANLIB) $$(common-objpfx)$$(patsubst %,$$(libtype$o),c)
414 object-suffixes-left = $(object-suffixes)
415 include $(o-iterator)
418 # This makes all the object files.
420 objects objs: $(foreach o,$(object-suffixes),$(objects:.o=$o)) \
421 $(addprefix $(objpfx),$(extra-objs))
423 # Canned sequence for building an extra library archive.
424 define build-extra-lib
425 $(patsubst %,cd %;,$(objdir)) \
426 $(AR) cru$(verbose) $(@:$(objpfx)%=%) \
427 $(patsubst $(objpfx)%,%,$^)
433 # $(install-lib) are installed from the object directory into $(libdir);
434 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
435 # unless they also appear in $(non-lib.a). $(install-data) are installed
436 # as they are into $(datadir). $(headers) are installed as they are in
437 # $(includedir). $(install-bin) and $(install-sbin) are installed from the
438 # object directory into $(bindir) and $(sbindir), respectively.
439 # $(install-others) are absolute path names of files to install; rules to
440 # install them are defined elsewhere.
442 # The simple library name to install libc.a under.
443 # This could be defined by a sysdep Makefile.
449 $(make-target-directory)
450 $(INSTALL_DATA) $< $@
453 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
454 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
455 define make-target-directory
456 $(addprefix $(..)mkinstalldirs ,\
457 $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
460 # Any directory (parent or subdir) that has any object files to build
461 # should install libc.a; this way "make install" in a subdir is guaranteed
462 # to install everything it changes.
464 installed-libcs := $(foreach o,$(object-suffixes),\
465 $(libdir)/$(patsubst %,$(libtype$o),\
466 $(libprefix)$(libc-name)))
467 installed-libcs := $(filter-out %_pic.a,$(installed-libcs))
468 install: $(installed-libcs)
469 $(installed-libcs): $(libdir)/lib$(libprefix)%: lib
470 $(make-target-directory)
471 $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
472 # Running ranlib after installing makes the __.SYMDEF time stamp up to
473 # date, which avoids messages from some linkers.
477 define do-install-program
478 $(make-target-directory)
479 $(INSTALL_PROGRAM) $< $@.new
483 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
484 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
485 ifeq (yes,$(build-shared))
486 install-lib-nosubdir: $(foreach so,$(install-lib.so),\
487 $(libdir)/$(patsubst $(libprefix)lib%,lib$(libprefix)%,\
488 $(libprefix)$(so))$($(so)-version))
490 install: $(slibdir)/libc.so$(libc.so-version)
491 $(slibdir)/lib$(libprefix)c.so$(libc.so-version): $(common-objpfx)libc.so
495 $(do-install-program)
496 $(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
497 $(filter-out %.so,$@))
500 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
501 $(foreach v,$(so-versions),\
502 $(libdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so
504 $(foreach v,$(so-versions),\
505 $(libdir)/$(libprefix)%$v): $(common-objpfx)%.so
510 $(addprefix $(bindir)/,$(install-bin)): $(bindir)/%: $(objpfx)%
511 $(do-install-program)
514 $(addprefix $(sbindir)/,$(install-sbin)): $(sbindir)/%: $(objpfx)%
515 $(do-install-program)
518 install-lib.a := $(filter lib%.a,$(install-lib))
519 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
520 ifdef install-lib-non.a
521 $(addprefix $(libdir)/$(libprefix),$(install-lib-non.a)): \
522 $(libdir)/$(libprefix)%: $(common-objpfx)%
526 $(install-lib.a:lib%.a=$(libdir)/lib$(libprefix)%.a): \
527 $(libdir)/lib$(libprefix)%.a: $(common-objpfx)lib%.a
529 $(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
533 $(addprefix $(datadir)/,$(install-data)): $(datadir)/%: %;$(do-install)
535 headers := $(strip $(headers))
537 $(addprefix $(includedir)/,$(headers)): \
538 $(includedir)/%: %;$(do-install)
541 .PHONY: install-bin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
542 install-data-nosubdir install-headers-nosubdir
543 install-bin-nosubdir: $(addprefix $(bindir)/,$(install-bin))
544 install-sbin-nosubdir: $(addprefix $(sbindir)/,$(install-sbin))
545 install-lib-nosubdir: $(addprefix $(libdir)/,\
546 $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
547 $(addprefix $(libprefix),$(install-lib-non.a)))
548 install-data-nosubdir: $(addprefix $(datadir)/,$(install-data))
549 install-headers-nosubdir: $(addprefix $(includedir)/,$(headers))
550 install-others-nosubdir: $(install-others)
552 # We need all the `-nosubdir' targets so that `install' in the parent
553 # doesn't depend on several things which each iterate over the subdirs.
554 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
555 # subroutine. Then in the parent `install-FOO' also causes subdir makes.
556 install-%:: install-%-nosubdir ;
558 .PHONY: install install-no-libc.a-nosubdir
559 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
560 install-bin-nosubdir install-lib-nosubdir \
561 install-others-nosubdir install-sbin-nosubdir
562 install: install-no-libc.a-nosubdir
564 ifeq (yes,$(build-shared))
565 # Pattern rule to build a shared object from an archive of PIC objects.
566 # This must come after the installation rules so Make doesn't try to
567 # build shared libraries in place from the installed *_pic.a files.
568 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
569 # on other shared objects.
570 lib%.so: lib%_pic.a; $(build-shlib)
572 ifeq ($(libc_cv_ld_no_whole_archive),yes)
573 no-whole-archive = -Wl,--no-whole-archive
579 $(LINK.o) -shared -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS) \
580 -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
581 $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
582 -Wl,-rpath-link=$(common-objdir) \
583 -Wl,--whole-archive $^ $(no-whole-archive) \
584 $(LDLIBS-$(@F:lib%.so=%).so)
587 # Don't try to use -lc when making libc.so itself.
588 # Also omits crti.o and crtn.o, which we do not want
589 # since we define our own `.init' section specially.
590 LDFLAGS-c.so = -nostdlib -nostartfiles
591 # Give libc.so an entry point and make it directly runnable itself.
592 LDFLAGS-c.so += -e __libc_print_version
593 # Use our own special initializer and finalizer files for libc.so.
594 elfobjdir := $(firstword $(objdir) $(..)elf)
595 $(common-objpfx)libc.so: $(elfobjdir)/soinit.so \
596 $(common-objpfx)libc_pic.a \
597 $(elfobjdir)/sofini.so
600 ifdef libc.so-version
601 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
603 ln -s $(<F) $@ || ln $< $@
608 # Command to compile $< in $(objdir) using the native libraries.
609 define native-compile
610 cwd=`pwd`; cd $(@D); $(BUILD_CC) $(BUILD_CFLAGS) \
611 $(addprefix $$cwd/,$^) -o $(@F)
614 # Command to compile $< in $(common-objdir) using the native libraries.
615 define common-objdir-compile
616 cd $(@D); $(BUILD_CC) $(BUILD_CFLAGS) $(<:$(common-objpfx)%=%) -o $(@F)
619 # We always want to use configuration definitions.
621 # This is always used in $(common-objdir), so we use no directory name.
622 BUILD_CFLAGS = -include config.h
624 BUILD_CFLAGS = -include $(..)config.h
627 # Support the GNU standard name for this target.
632 TAGS: distinfo $(..)MakeTAGS
633 $(MAKE) $(addprefix -f ,$^) $@
635 $(..)po/%.pot: distinfo $(..)MakeTAGS FORCE
636 $(MAKE) $(addprefix -f ,$(filter-out FORCE,$^)) $@
645 # Common cleaning targets.
647 .PHONY: common-mostlyclean common-clean mostlyclean clean
649 mostlyclean: common-mostlyclean
651 # Remove the object files.
653 -rm -f $(addprefix $(objpfx),$(tests) $(others) \
654 $(addsuffix .o,$(tests) $(others)) \
655 $(addsuffix .out,$(tests)))
656 -rm -f $(addprefix $(objpfx),$(extra-objs) $(install-lib))
657 -rm -f core $(objpfx)stub-$(subdir)
660 $(foreach o,$(object-suffixes),
661 -rm -f $(addprefix $(objpfx),stamp$o-$(subdir)) $(objects:.o=$o))
664 # Also remove the dependencies and generated source files.
665 common-clean: common-mostlyclean
666 -rm -f $(addprefix $(objpfx),$(generated)) $(+depfiles)
668 # Produce a file `stub-$(subdir)' which contains `#define __stub_FUNCTION'
669 # for each function which is a stub. We grovel over all the .d files
670 # looking for references to source files in sysdeps/stub. Then we grovel
671 # over each referenced source file to see what stub function it defines.
673 .PHONY: stubs # The parent Makefile calls this target.
674 stubs: $(common-objpfx)stub-$(subdir)
675 s = $(sysdep_dir)/stub
676 $(common-objpfx)stub-$(subdir): $(+depfiles)
677 # Use /dev/null since `...` might expand to empty.
678 s=`cd $s; /bin/pwd`; \
679 $(patsubst %,cd %;,$(objdir)) \
680 sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
681 `sed -n 's@^.*$s/\([a-z0-9_-]*\.c\).*$$@'"$$s"/'\1@p' \
682 $(patsubst $(objpfx)%,%,$^) /dev/null` \
686 # Make the distribution tar file.
689 dist: distinfo $(..)Make-dist
690 $(MAKE) -f $< -f $(word 2,$^) $(Make-dist-args)
692 # Avoid depending on source files found in sysdeps dirs,
693 # because the references affect implicit rule selection.
694 dist: $(filter-out %.c %.S %.s,$(distribute))
696 # We used to simply export all these variables, but that frequently made the
697 # environment get too large. Instead, we write all the information into
698 # a generated makefile fragment `distinfo', and then include it with -f in
699 # the sub-make that makes the distribution (above).
700 distinfo: Makefile $(..)Makerules
706 $(foreach var,subdir subdir-dirs sources elided-routines headers distribute \
707 dont_distribute generated others tests,
708 echo >> $@.new '$(var) := $($(var))')
709 echo >> $@.new 'sources := $$(sources) $$(addsuffix .c,$$(elided-routines))'
712 ifneq (,$(strip $(gpl2lgpl)))
713 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
714 # Snarf from the master source and frob the copying notice.
715 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
717 # So I don't edit them by mistake.
720 test ! -d CVS || cvs commit -m'Updated from $^' $@