1 # Copyright (C) 1991-2000,01,02, 03 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 Lesser General Public
6 # License as published by the Free Software Foundation; either
7 # version 2.1 of the 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 # Lesser General Public License for more details.
14 # You should have received a copy of the GNU Lesser General Public
15 # License along with the GNU C Library; if not, write to the Free
16 # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 # Makefile configuration options for the GNU C library.
23 This makefile requires GNU Make.
26 all: # Make this the default goal
28 ifneq "$(origin +included-Makeconfig)" "file"
30 +included-Makeconfig := yes
36 # If config.make exists, the source directory was configured,
37 # so don't try to be clever and find another directory to build in.
38 ifneq (,$(wildcard $(..)config.make))
41 else # Not configured.
49 # Directory for object files and libc.a. If this is not defined, the
50 # object files live in the subdirectories where their sources live, and
51 # libc.a lives in the parent directory (this probably doesn't work any
54 ifeq ($(filter /%,$(ARCH)),)
55 objdir := $(..)$(ARCH)
61 # $(common-objdir) is the place to put objects and
62 # such that are not specific to a single subdir.
64 objpfx := $(patsubst %//,%/,$(objdir)/$(subdir)/)
65 common-objpfx = $(objdir)/
66 common-objdir = $(objdir)
73 # This is a kludge. make wizards might grok.
74 common-objpfx = sysdeps/../
79 # Root of the sysdeps tree.
80 sysdep_dir := $(..)sysdeps
81 export sysdep_dir := $(sysdep_dir)
83 # Get the values defined by options to `configure'.
84 include $(common-objpfx)config.make
86 # What flags to give to sources which call user provided callbacks
87 uses-callbacks = $(exceptions)
89 # We have a special subdir for each binary format.
90 # For now, only ELF is fully supported.
94 # This is probably better than nothing.
98 # Complete path to sysdep dirs.
99 export full_config_sysdirs := $(addprefix $(..),$(config-sysdirs))
101 # Run config.status to update config.make and config.h. We don't show the
102 # dependence of config.h to Make, because it is only touched when it
103 # changes and so config.status would be run every time; the dependence of
104 # config.make should suffice to force regeneration and re-exec, and the new
105 # image will notice if config.h changed.
106 $(common-objpfx)config.make: $(common-objpfx)config.status \
107 $(..)config.make.in $(..)config.h.in
108 cd $(<D); $(SHELL) $(<F)
110 # Find all the sysdeps configure fragments, to make sure we re-run
111 # configure when any of them changes.
112 $(common-objpfx)config.status: $(..)version.h $(..)configure \
113 $(foreach dir,$(full_config_sysdirs),\
117 $(firstword $(wildcard \
118 $(addprefix $(dir)/,configure configure.in)))))
119 @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
120 echo The GNU C library has not been configured. >&2; \
121 echo Run \`configure\' to configure it before building. >&2; \
122 echo Try \`configure --help\' for more details. >&2; \
125 # We don't want CPPFLAGS to be exported to the command running configure.
128 # Get the user's configuration parameters.
129 ifneq ($(wildcard $(..)configparms),)
130 include $(..)configparms
133 ifneq ($(wildcard $(common-objpfx)configparms),)
134 include $(common-objpfx)configparms
139 #### These are the configuration variables. You can define values for
140 #### the variables below in the file `configparms'.
141 #### Do NOT edit this file.
145 # Common prefix for machine-independent installation directories.
146 ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value.
150 # Decide whether we shall build the programs or not. We always do this
151 # unless the user tells us (in configparms) or we are building for a
153 ifndef build-programs
154 ifneq ($(config-os),none)
161 # Common prefix for machine-dependent installation directories.
162 ifeq ($(origin exec_prefix),undefined)
163 exec_prefix = $(prefix)
166 # Where to install the library and object files.
168 libdir = $(exec_prefix)/lib
170 inst_libdir = $(install_root)$(libdir)
172 # Where to install the shared library and dynamic linker.
174 slibdir = $(exec_prefix)/lib
176 inst_slibdir = $(install_root)$(slibdir)
178 # Prefix to put on files installed in $(libdir). For libraries `libNAME.a',
179 # the prefix is spliced between `lib' and the name, so the linker switch
180 # `-l$(libprefix)NAME' finds the library; for other files the prefix is
181 # just prepended to the whole file name.
182 ifeq ($(origin libprefix),undefined)
186 # Where to install the header files.
188 includedir = $(prefix)/include
190 inst_includedir = $(install_root)$(includedir)
192 # Where to install machine-independent data files.
193 # These are the timezone database, and the locale database.
195 datadir = $(prefix)/share
197 inst_datadir = $(install_root)$(datadir)
199 # Where to install the timezone data files (which are machine-independent).
201 zonedir = $(datadir)/zoneinfo
203 inst_zonedir = $(install_root)$(zonedir)
205 # Where to install the locale files.
207 localedir = $(libdir)/locale
209 inst_localedir = $(install_root)$(localedir)
211 # Where to install the message catalog data files (which are
212 # machine-independent).
214 msgcatdir = $(datadir)/locale
216 inst_msgcatdir = $(install_root)$(msgcatdir)
218 # Where to install the locale charmap source files.
220 i18ndir = $(datadir)/i18n
222 inst_i18ndir = $(install_root)$(i18ndir)
224 # Where to install the shared object for charset transformation.
226 gconvdir = $(libdir)/gconv
228 inst_gconvdir = $(install_root)$(gconvdir)
230 # Where to install programs.
232 bindir = $(exec_prefix)/bin
234 inst_bindir = $(install_root)$(bindir)
236 # Where to install internal programs.
238 libexecdir = $(exec_prefix)/libexec
240 inst_libexecdir = $(install_root)$(libexecdir)
242 # Where to install administrative programs.
244 rootsbindir = $(exec_prefix)/sbin
246 inst_rootsbindir = $(install_root)$(rootsbindir)
249 sbindir = $(exec_prefix)/sbin
251 inst_sbindir = $(install_root)$(sbindir)
253 # Where to install the Info files.
255 infodir = $(prefix)/info
257 inst_infodir = $(install_root)$(infodir)
259 # Where to install default configuration files. These include the local
260 # timezone specification and network data base files.
262 sysconfdir = $(prefix)/etc
264 inst_sysconfdir = $(install_root)$(sysconfdir)
266 # What timezone should be the installed default (e.g., US/Eastern).
267 # Run `make -C time echo-zonenames' to see a list of available zone names.
268 # The local timezone can be changed with `zic -l TIMEZONE' at any time.
273 # Where to install the "localtime" timezone file; this is the file whose
274 # contents $(localtime) specifies. If this is a relative pathname, it is
275 # relative to $(zonedir). It is a good idea to put this somewhere
276 # other than there, so the zoneinfo directory contains only universal data,
277 # localizing the configuration data elsewhere.
278 ifndef localtime-file
279 localtime-file = $(sysconfdir)/localtime
280 inst_localtime-file = $(install_root)$(localtime-file)
283 # What to use for leap second specifications in compiling the default
284 # timezone files. Set this to `/dev/null' for no leap second handling as
285 # 1003.1 requires, or to `leapseconds' for proper leap second handling.
286 # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'.
287 # This variable determines the default: if it's `/dev/null',
288 # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE.
290 leapseconds = /dev/null
293 # What timezone's DST rules should be used when a POSIX-style TZ
294 # environment variable doesn't specify any rules. For 1003.1 compliance
295 # this timezone must use rules that are as U.S. federal law defines DST.
296 # Run `make -C time echo-zonenames' to see a list of available zone names.
297 # This setting can be changed with `zic -p TIMEZONE' at any time.
298 # If you want POSIX.1 compatibility, use `America/New_York'.
300 posixrules = America/New_York
303 # Where to install the "posixrules" timezone file; this is file
304 # whose contents $(posixrules) specifies. If this is a relative
305 # pathname, it is relative to $(zonedir).
306 ifndef posixrules-file
307 posixrules-file = posixrules
311 # Directory where your system's native header files live.
312 # This is used on Unix systems to generate some GNU libc header files.
314 sysincludedir = /usr/include
318 # Commands to install files.
320 INSTALL_DATA = $(INSTALL) -m 644
322 ifndef INSTALL_SCRIPT
323 INSTALL_SCRIPT = $(INSTALL)
325 ifndef INSTALL_PROGRAM
326 INSTALL_PROGRAM = $(INSTALL)
333 # The name of the C compiler.
334 # If you've got GCC, and it works, use it.
335 ifeq ($(origin CC),default)
339 # The name of the C compiler to use for compilations of programs to run on
340 # the host that is building the library. If you set CC to a
341 # cross-compiler, you must set this to the normal compiler.
346 # Default flags to pass the C compiler.
347 ifndef default_cflags
348 ifeq ($(release),stable)
349 default_cflags := -g -O2
351 default_cflags := -g -O
355 # Flags to pass the C compiler when assembling preprocessed assembly code
356 # (`.S' files). On some systems the assembler doesn't understand the `#' line
357 # directives the preprocessor produces. If you have troubling compiling
358 # assembly code, try using -P here to suppress these directives.
363 # ELF always supports init/fini sections
368 # Installed name of the startup code.
369 ifneq ($(have-initfini),yes)
370 # When not having init/fini, there is just one startfile, called crt0.o.
371 start-installed-name = crt0.o
373 # On systems having init/fini, crt0.o is called crt1.o, and there are
374 # some additional bizarre files.
375 start-installed-name = crt1.o
377 # On systems that do not need a special startfile for statically linked
378 # binaries, simply set it to the normal name.
379 ifndef static-start-installed-name
380 static-start-installed-name = $(start-installed-name)
383 ifeq (yesyesyes,$(build-shared)$(elf)$(have-z-combreloc))
384 combreloc-LDFLAGS = -Wl,-z,combreloc
385 LDFLAGS.so += $(combreloc-LDFLAGS)
386 LDFLAGS-rtld += $(combreloc-LDFLAGS)
389 # Command for linking programs with the C library.
391 +link = $(CC) -nostdlib -nostartfiles -o $@ \
392 $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
393 $(combreloc-LDFLAGS) \
394 $(addprefix $(csu-objpfx),$(start-installed-name)) \
395 $(+preinit) $(+prector) \
396 $(filter-out $(addprefix $(csu-objpfx),start.o \
397 $(start-installed-name))\
398 $(+preinit) $(link-extra-libs) \
399 $(common-objpfx)libc% $(+postinit),$^) \
400 $(link-extra-libs) $(link-libc) $(+postctor) $(+postinit)
402 # Command for statically linking programs with the C library.
404 +link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \
405 $(sysdep-LDFLAGS) $(LDFLAGS) \
406 $(addprefix $(csu-objpfx),$(static-start-installed-name)) \
407 $(+preinit) $(+prector) \
408 $(filter-out $(addprefix $(csu-objpfx),start.o \
409 $(start-installed-name))\
410 $(+preinit) $(link-extra-libs-static) \
411 $(common-objpfx)libc% $(+postinit),$^) \
412 $(link-extra-libs-static) $(link-libc-static) $(+postctor) $(+postinit)
414 # Command for statically linking bounded-pointer programs with the C library.
416 +link-bounded = $(CC) -nostdlib -nostartfiles -static -fbounded-pointers -o $@ \
417 $(sysdep-LDFLAGS) $(LDFLAGS) \
418 $(addprefix $(csu-objpfx),b$(static-start-installed-name)) \
419 $(+preinit) $(+prector) \
420 $(filter-out $(addprefix $(csu-objpfx),start.ob \
421 $(start-installed-name))\
422 $(+preinit) $(link-extra-libs-bounded) \
423 $(common-objpfx)libc% $(+postinit),$^) \
424 $(link-extra-libs-bounded) $(link-libc-bounded) $(+postctor) $(+postinit)
426 ifndef config-LDFLAGS
427 ifeq (yesyes,$(build-shared)$(elf))
428 config-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name)
432 ifeq (yes,$(build-shared))
434 # We need the versioned name of libc.so in the deps of $(others) et al
435 # so that the symlink to libc.so is created before anything tries to
436 # run the linked programs.
437 link-libc = -Wl,-rpath-link=$(rpath-link) \
438 $(common-objpfx)libc.so$(libc.so-version) \
439 $(common-objpfx)$(patsubst %,$(libtype.oS),c) $(gnulib)
440 # This is how to find at build-time things that will be installed there.
441 rpath-dirs = math elf dlfcn nss nis rt resolv crypt
443 ifneq (,$(filter aix aix%,$(config-os)))
444 link-libc = $(common-objpfx)libc.a \
445 $(common-objpfx)$(patsubst %,$(libtype.oS),c) $(gnulib)
446 rpath-dirs = math dlfcn nss nis rt resolv crypt
450 $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
451 elfobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)elf)
453 nssobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nss)
454 resolvobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)resolv)
455 link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib)
459 # Differences in the linkers on the various platforms.
461 LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN'
462 LDFLAGS-soname-fname = -Wl,-soname,$(@F)
463 LDFLAGS-rdynamic = -rdynamic
464 LDFLAGS-Bsymbolic = -Bsymbolic
466 ifneq (,$(filter aix aix%,$(config-os)))
467 LDFLAGS-rpath-ORIGIN =
468 LDFLAGS-soname-fname =
469 LDFLAGS-rdynamic = -Wl,-bdynamic
470 LDFLAGS-Bsymbolic = -Wl,-bsymbolic
474 # Choose the default search path for the dynamic linker based on
475 # where we will install libraries.
476 ifneq ($(libdir),$(slibdir))
477 default-rpath = $(slibdir):$(libdir)
479 default-rpath = $(libdir)
482 ifndef link-extra-libs
483 ifeq (yes,$(build-shared))
484 ifneq ($(common-objpfx),$(objpfx))
485 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),\
486 $(wildcard $(common-objpfx)$(lib).so$($(notdir $(lib)).so-version) \
487 $(objpfx)$(lib).so$($(notdir $(lib)).so-version)))
489 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).so$($(notdir $(lib)).so-version))
492 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a)
496 # The static libraries.
497 ifeq (yes,$(build-static))
498 link-libc-static = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a
499 link-extra-libs-static = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a)
501 ifeq (yes,$(build-shared))
502 # We can try to link the programs with lib*_pic.a...
503 link-libc-static = $(gnulib) $(common-objpfx)libc_pic.a
504 link-extra-libs-static = $(link-extra-libs)
507 link-libc-bounded = $(common-objpfx)libc_b.a $(gnulib) $(common-objpfx)libc_b.a
508 link-extra-libs-bounded = $(foreach lib,$(LDLIBS-$(@F:%-bp=%)),$(common-objpfx)$(lib)_b.a)
511 gnulib := -lgcc -lgcc_eh
514 +preinit = $(addprefix $(csu-objpfx),crti.o)
515 +postinit = $(addprefix $(csu-objpfx),crtn.o)
516 +prector = `$(CC) --print-file-name=crtbegin.o`
517 +postctor = `$(CC) --print-file-name=crtend.o`
518 +interp = $(addprefix $(elf-objpfx),interp.os)
520 csu-objpfx = $(common-objpfx)csu/
521 elf-objpfx = $(common-objpfx)elf/
523 # How to run a program we just linked with our library.
524 # The program binary is assumed to be $(word 2,$^).
525 built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
526 ifeq (yesyes,$(build-shared)$(elf))
528 sysdep-library-path = \
529 $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\
530 $(filter -Wl$(comma)-rpath-link=%,\
531 $(sysdep-LDFLAGS)))))
532 run-program-prefix = $(if $(filter $(notdir $(built-program-file)),\
534 $(elf-objpfx)$(rtld-installed-name) \
535 --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)))
539 # Never use $(run-program-prefix) for the statically-linked %-bp test programs
540 built-program-cmd = $(patsubst %,$(run-program-prefix),\
541 $(filter-out %-bp,$(built-program-file))) \
542 $(built-program-file)
552 # Extra flags to pass to GCC.
553 ifeq ($(all-warnings),yes)
554 +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes -Wcast-qual -Wbad-function-cast -Wmissing-noreturn -Wmissing-prototypes -Wmissing-declarations -Wcomment -Wcomments -Wtrigraphs -Wsign-compare -Wfloat-equal -Wmultichar
556 +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes
559 # This is the program that generates makefile dependencies from C source files.
560 # The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy
561 # targets for headers so that removed headers don't break the build.
563 +mkdep = $(CC) -M -MP
566 # The program that makes Emacs-style TAGS files.
569 # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
570 # perhaps others) to preprocess assembly code in some cases.
573 # To force installation of files even if they are older than the
574 # installed files. This variable is included in the dependency list
575 # of all installation targets.
576 ifeq ($(force-install),yes)
577 +force = force-install
583 #### End of configuration variables.
586 # This tells some versions of GNU make before 3.63 not to export all variables.
589 # We want to echo the commands we're running without
590 # umpteen zillion filenames along with it (we use `...' instead)
591 # but we don't want this echoing done when the user has said
592 # he doesn't want to see commands echoed by using -s.
593 ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s
594 +cmdecho := echo >/dev/null
599 # These are the flags given to the compiler to tell
600 # it what sort of optimization and/or debugging output to do.
602 # If `CFLAGS' was defined, use that.
604 +cflags := $(filter-out -I%,$(CFLAGS))
608 # If none of the above worked, default to "-g -O".
609 ifeq "$(strip $(+cflags))" ""
610 +cflags := $(default_cflags)
611 endif # $(+cflags) == ""
613 +cflags := $(+cflags) $(+gccwarn)
616 # Don't duplicate options if we inherited variables from the parent.
617 +cflags := $(sort $(+cflags))
620 # These are flags given to the C compiler to tell it to look for include
621 # files (including ones given in angle brackets) in the current directory,
622 # in the parent library source directory and in the include directory.
623 # `+sysdep-includes' will be defined by Makerules.
624 +includes = -I$(..)include -I. \
625 $(patsubst %/,-I%,$(objpfx)) $(patsubst %/,-I%,$(..)) \
626 $(libio-include) $(includes) \
627 $(+sysdep-includes) $(sysincludes)
629 # Since libio has several internal header files, we use a -I instead
630 # of many little headers in the include directory.
631 libio-include = -I$(..)libio
633 # These are the variables that the implicit compilation rules use.
634 # Note that we can't use -std=* in CPPFLAGS, because it overrides
635 # the implicit -lang-asm and breaks cpp behavior for .S files--notably
636 # it causes cpp to stop predefining __ASSEMBLER__.
637 CPPFLAGS = $($(subdir)-CPPFLAGS) $(+includes) $(defines) \
638 -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
639 $(CPPFLAGS-$(suffix $@)) \
640 $(foreach lib,$(libof-$(basename $(@F))) \
641 $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \
642 $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F)))
643 override CFLAGS = -std=gnu99 \
644 $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \
645 $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F))
647 # If everything is compiled with -fPIC (implicitly) we must tell this by
648 # defining the PIC symbol.
649 ifeq (yes,$(build-pic-default))
653 # Enable object files for different versions of the library.
654 # Various things use $(object-suffixes) to know what all to make.
655 # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
656 # to pass different flags for each flavor.
657 libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o))
658 all-object-suffixes := .o .os .op .og .ob .oS
660 CPPFLAGS-.o = $(pic-default)
661 CFLAGS-.o = $(filter %frame-pointer,$(+cflags))
662 ifeq (yes,$(build-static))
664 object-suffixes += .o
666 ifeq (yes,$(build-shared))
667 # Under --enable-shared, we will build a shared library of PIC objects.
668 # The PIC object files are named foo.os.
669 object-suffixes += .os
670 CPPFLAGS-.os = -DPIC -DSHARED
671 CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag)
672 libtype.os := lib%_pic.a
673 # This can be changed by a sysdep makefile
675 # This one should always stay like this unless there is a very good reason.
678 ifeq (yes,$(build-profile))
679 # Under --enable-profile, we will build a static library of profiled objects.
680 # The profiled object files are named foo.op.
681 object-suffixes += .op
682 CPPFLAGS-.op = -DPROF $(pic-default)
684 libtype.op = lib%_p.a
686 ifeq (yes,$(build-omitfp))
687 # Under --enable-omitfp, we build the library optimized without
688 # debugging information using -fomit-frame-pointer, and build an extra
689 # library with debugging information. The debuggable objects are named foo.og.
690 object-suffixes += .og
691 CPPFLAGS-.og = $(pic-default)
693 CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES
694 CFLAGS-.os += -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES
695 libtype.og = lib%_g.a
699 ifeq (yes,$(build-bounded))
700 # Under --enable-bounded, we build the library with `-fbounded-pointers -g'
701 # to runtime bounds checking. The bounded-pointer objects are named foo.ob.
702 # We disable sibling-call optimizations so that stack traces will be complete
703 # and thus aid debugging, since after all, BPs are a debugging tool.
704 object-suffixes += .ob
705 CPPFLAGS-.ob = -fbounded-pointers $(pic-default)
706 CFLAGS-.ob = -g -O2 -fno-optimize-sibling-calls -fno-strict-aliasing
707 libtype.ob = lib%_b.a
710 object-suffixes-for-libc := $(object-suffixes)
712 ifeq (yes,$(build-shared))
713 # Build special library that contains the static-only routines for libc.
714 object-suffixes-for-libc += .oS
716 # Must build the routines as PIC, though, because they can end up in (users')
717 # shared objects. We don't want to use CFLAGS-os because users may, for
718 # example, make that processor-specific.
719 CFLAGS-.oS = $(CFLAGS-.o) $(PIC-ccflag)
720 CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC -DLIBC_NONSHARED=1
721 libtype.oS = lib%_nonshared.a
724 # The assembler can generate debug information too.
726 ifeq ($(have-cpp-asm-debuginfo),yes)
727 ASFLAGS := $(filter -g%,$(CFLAGS))
732 ASFLAGS += $(ASFLAGS-config)
734 +gnu-stabs = $(shell echo>&2 '*** BARF ON ME')
740 move-if-change = $(SHELL) $(..)scripts/move-if-change
742 -include $(common-objpfx)sysd-dirs
744 ifeq ($(sysd-dirs-done),t)
745 -include $(common-objpfx)sysd-sorted
746 subdirs = $(sorted-subdirs)
749 ifeq (yes, $(build-shared))
751 # This is a pair of implicit rules to preprocess a file with # comments,
752 # %ifdef et al, based on config.h settings or other %include'd files.
753 # We use chained rules instead of a pipeline here so that we can properly
754 # check the exit status of cpp rather than using its bad output when there
755 # is a preprocessing error. Another rule should depend on the output file
756 # `FOO.v', and along with that `FOO.v.i' should be given dependencies
757 # listing both its input files, and any header files that it may reference
759 %.v.i: $(common-objpfx)config.h
760 sed '/^[ ]*#/d;s/^[ ]*%/#/' $(filter-out FORCE %.h,$^) \
761 | $(CC) -E -undef $(CPPFLAGS) \
762 -DASSEMBLER -x assembler-with-cpp - \
766 sed '/^[ ]*#/d;/^[ ]*$$/d' $< > $@T
769 # Process the shlib-versions file, which tells us what shared library
770 # version numbers to use when we install shared objects on this system.
771 # We need to wait until $(subdirs) is complete.
772 ifeq ($(sysd-sorted-done),t)
773 -include $(common-objpfx)soversions.mk
774 ifndef avoid-generated
775 $(common-objpfx)shlib-versions.v.i: \
776 $(..)shlib-versions $(wildcard $(patsubst %, $(..)%/shlib-versions,\
779 $(common-objpfx)soversions.i: $(common-objpfx)shlib-versions.v
780 default_setname='$(filter-out %_default,$(oldest-abi:%=GLIBC_%))'; \
781 while read conf version setname; do \
782 test -n "$$version" && \
783 test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
784 : "$$conf"` != 0 || continue; \
785 if test "x$$version" = xDEFAULT; then \
786 default_setname="$$setname"; \
788 $(abi-default_setname) \
789 lib=`echo $$version | sed 's/=.*$$//'`; \
790 if eval test -z "\$${versioned_$${lib}}"; then \
791 eval versioned_$${lib}=yes; \
792 number=`echo $$version | sed "s/^.*=//"`; \
793 echo $$lib $$number $${setname:-$${default_setname}}; \
796 done < $< > $@T; exit 0
798 $(common-objpfx)soversions.mk: $(common-objpfx)soversions.i
799 (while read lib number setname; do \
801 [0-9]*) echo "$$lib.so-version=.$$number"; \
802 echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\
803 *) echo "$$lib.so-version=$$number"; \
804 echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\
807 echo soversions.mk-done = t;) < $< > $@T; exit 0
812 postclean-generated += soversions.mk soversions.i \
813 shlib-versions.v shlib-versions.v.i
815 # Generate the header containing the names of all shared libraries.
816 # We use a stamp file to avoid uncessary recompilations.
817 before-compile += $(common-objpfx)gnu/lib-names.h
818 ifeq ($(soversions.mk-done),t)
819 $(common-objpfx)gnu/lib-names.h: $(common-objpfx)gnu/lib-names.stmp; @:
820 ifneq (,$(findstring aix,$(config-os)))
821 $(common-objpfx)gnu/lib-names.stmp: $(..)sysdeps/unix/sysv/aix/gnu/lib-names.h
822 $(make-target-directory)
823 @rm -f ${@:stmp=T} $@
824 @cp $(..)sysdeps/unix/sysv/aix/gnu/lib-names.h $(common-objpfx)gnu
827 $(common-objpfx)gnu/lib-names.stmp: $(common-objpfx)soversions.mk
828 $(make-target-directory)
829 @rm -f ${@:stmp=T} $@
830 (echo '/* This file is automatically generated.';\
831 echo ' It defines macros to allow user program to find the shared';\
832 echo ' library files which come as part of GNU libc. */';\
833 echo '#ifndef __GNU_LIB_NAMES_H'; \
834 echo '#define __GNU_LIB_NAMES_H 1'; \
836 (libs='$(all-sonames)';\
837 for l in $$libs; do \
838 name=`echo $$l | sed 's/.*=//'`; \
839 upname=`echo $$l | sed 's/=.*//' | \
840 tr 'abcdefghijklmnopqrstuvwxyz-' \
841 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \
842 upname2=`echo $$name | sed 's/[.]so.*//' | \
843 tr 'abcdefghijklmnopqrstuvwxyz-' \
844 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \
845 echo "#define $${upname}_SO \"$$name\""; \
846 if test $$upname != $$upname2; then \
847 echo "#define $${upname2}_SO \"$$name\""; \
851 echo '#endif /* gnu/lib-names.h */';) > ${@:stmp=T}
852 $(move-if-change) ${@:stmp=T} ${@:stmp=h}
857 common-generated += gnu/lib-names.h gnu/lib-names.stmp
859 # The name under which the run-time dynamic linker is installed.
860 # We are currently going for the convention that `/lib/ld.so.1'
861 # names the SVR4/ELF ABI-compliant dynamic linker.
862 ifndef rtld-installed-name
864 rtld-installed-name = $(ld.so-version)
866 rtld-installed-name = ld.so.1
870 ifndef rtld-version-installed-name
871 rtld-version-installed-name = ld-$(version).so
879 ifeq ($(build-shared),yes)
880 libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
882 libdl = $(common-objpfx)dlfcn/libdl.a
885 ifneq (,$(findstring aix,$(config-os)))
886 ifeq ($(build-shared),yes)
888 libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
890 # No libdl without shared libs on AIX
895 # No ELF, no AIX - no libdl, at least for now.
901 # These are the subdirectories containing the library source. The order
902 # is more or less arbitrary. The sorting step will take care of the
903 # dependencies. Only the $(binfmt-subdir) should always be kept at the
905 all-subdirs = csu assert ctype locale intl catgets math setjmp signal \
906 stdlib stdio-common libio malloc string wcsmbs time dirent \
907 grp pwd posix io termios resource misc socket sysvipc gmon \
908 gnulib iconv iconvdata wctype manual shadow po argp \
909 crypt $(add-ons) nss localedata timezone rt conform debug \
910 $(sysdep-subdirs) $(dlfcn) $(binfmt-subdir)
911 all-subdirs := $(filter-out $(sysdep-inhibit-subdirs),$(all-subdirs))
913 # The mach and hurd subdirectories have many generated header files which
914 # much of the rest of the library depends on, so it is best to build them
915 # first (and mach before hurd, at that). The before-compile additions in
916 # sysdeps/{mach,hurd}/Makefile should make it reliably work for these files
917 # not to exist when making in other directories, but it will be slower that
918 # way with more somewhat expensive `make' invocations.
919 subdirs := $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \
920 $(filter-out mach hurd,$(subdirs))
922 ifndef avoid-generated
923 all-Subdirs-files = $(wildcard $(config-sysdirs:%=$(..)%/Subdirs))
924 $(common-objpfx)sysd-dirs: $(common-objpfx)config.make $(all-Subdirs-files)
925 $(AWK) 'BEGIN { subdirs = ""; inhibit = "" }; \
927 /^[^-]/ { subdirs = subdirs " " $$0 }; \
928 /^-/ { inhibit = inhibit " " substr($$0, 2) }; \
929 END { printf "sysdep-subdirs =%s\n", subdirs; \
930 printf "sysdep-inhibit-subdirs =%s\n", inhibit; \
931 print "sysd-dirs-done = t" }' \
932 $(patsubst $<,/dev/null,$^) > $@-tmp
935 all-Depend-files = $(wildcard $(..)*/Depend)
936 $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk $(all-Depend-files) \
937 $(common-objpfx)sysd-dirs $(..)Makeconfig
938 { { dirs='$(patsubst $(..)%/Depend,%,$(filter %/Depend,$^))'; \
939 for d in $$dirs; do \
941 echo "depend $$d $$on"; \
942 done < $(..)$$d/Depend; \
944 for f in $(all-subdirs); do \
947 } | $(AWK) -f $< && \
948 echo sysd-sorted-done = t; \
953 # Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here.
954 sysdep-makeconfigs := $(wildcard $(patsubst %,$(..)%/Makeconfig,\
955 $(config-sysdirs) $(add-ons)))
957 ifneq (,$(sysdep-makeconfigs))
958 include $(sysdep-makeconfigs)
962 endif # Makeconfig not yet included