1 # Copyright (C) 1991-2003, 2004 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 # What flags to give to tests which test stack alignment
90 stack-align-test-flags =
92 # We have a special subdir for each binary format.
93 # For now, only ELF is fully supported.
97 # This is probably better than nothing.
101 # Complete path to sysdep dirs.
102 export full_config_sysdirs := $(addprefix $(..),$(config-sysdirs))
104 # Run config.status to update config.make and config.h. We don't show the
105 # dependence of config.h to Make, because it is only touched when it
106 # changes and so config.status would be run every time; the dependence of
107 # config.make should suffice to force regeneration and re-exec, and the new
108 # image will notice if config.h changed.
109 $(common-objpfx)config.make: $(common-objpfx)config.status \
110 $(..)config.make.in $(..)config.h.in
111 cd $(<D); $(SHELL) $(<F)
113 # Find all the add-on and sysdeps configure fragments, to make sure we
114 # re-run configure when any of them changes.
115 $(common-objpfx)config.status: $(..)version.h $(..)configure \
116 $(foreach dir,$(full_config_sysdirs),\
120 $(firstword $(wildcard \
121 $(addprefix $(dir)/,configure configure.in))))) \
123 $(foreach dir,$(add_ons),\
124 $(firstword $(wildcard \
125 $(addprefix $(..)$(dir)/,configure configure.in)))))
126 @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
127 echo The GNU C library has not been configured. >&2; \
128 echo Run \`configure\' to configure it before building. >&2; \
129 echo Try \`configure --help\' for more details. >&2; \
132 # We don't want CPPFLAGS to be exported to the command running configure.
135 # Get the user's configuration parameters.
136 ifneq ($(wildcard $(..)configparms),)
137 include $(..)configparms
140 ifneq ($(wildcard $(common-objpfx)configparms),)
141 include $(common-objpfx)configparms
146 #### These are the configuration variables. You can define values for
147 #### the variables below in the file `configparms'.
148 #### Do NOT edit this file.
152 # Common prefix for machine-independent installation directories.
153 ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value.
157 # Decide whether we shall build the programs or not. We always do this
158 # unless the user tells us (in configparms) or we are building for a
160 ifndef build-programs
161 ifneq ($(config-os),none)
168 # Common prefix for machine-dependent installation directories.
169 ifeq ($(origin exec_prefix),undefined)
170 exec_prefix = $(prefix)
173 # Where to install the library and object files.
175 libdir = $(exec_prefix)/lib
177 inst_libdir = $(install_root)$(libdir)
179 # Where to install the shared library and dynamic linker.
181 slibdir = $(exec_prefix)/lib
183 inst_slibdir = $(install_root)$(slibdir)
185 # Prefix to put on files installed in $(libdir). For libraries `libNAME.a',
186 # the prefix is spliced between `lib' and the name, so the linker switch
187 # `-l$(libprefix)NAME' finds the library; for other files the prefix is
188 # just prepended to the whole file name.
189 ifeq ($(origin libprefix),undefined)
193 # Where to install the header files.
195 includedir = $(prefix)/include
197 inst_includedir = $(install_root)$(includedir)
199 # Where to install machine-independent data files.
200 # These are the timezone database, and the locale database.
202 datadir = $(prefix)/share
204 inst_datadir = $(install_root)$(datadir)
206 # Where to install the timezone data files (which are machine-independent).
208 zonedir = $(datadir)/zoneinfo
210 inst_zonedir = $(install_root)$(zonedir)
212 # Where to install the locale files.
214 localedir = $(libdir)/locale
216 inst_localedir = $(install_root)$(localedir)
218 # Where to install the message catalog data files (which are
219 # machine-independent).
221 msgcatdir = $(datadir)/locale
223 inst_msgcatdir = $(install_root)$(msgcatdir)
225 # Where to install the locale charmap source files.
227 i18ndir = $(datadir)/i18n
229 inst_i18ndir = $(install_root)$(i18ndir)
231 # Where to install the shared object for charset transformation.
233 gconvdir = $(libdir)/gconv
235 inst_gconvdir = $(install_root)$(gconvdir)
237 # Where to install programs.
239 bindir = $(exec_prefix)/bin
241 inst_bindir = $(install_root)$(bindir)
243 # Where to install internal programs.
245 libexecdir = $(exec_prefix)/libexec
247 inst_libexecdir = $(install_root)$(libexecdir)
249 # Where to install administrative programs.
251 rootsbindir = $(exec_prefix)/sbin
253 inst_rootsbindir = $(install_root)$(rootsbindir)
256 sbindir = $(exec_prefix)/sbin
258 inst_sbindir = $(install_root)$(sbindir)
260 # Where to install the Info files.
262 infodir = $(prefix)/info
264 inst_infodir = $(install_root)$(infodir)
266 # Where to install default configuration files. These include the local
267 # timezone specification and network data base files.
269 sysconfdir = $(prefix)/etc
271 inst_sysconfdir = $(install_root)$(sysconfdir)
273 # What timezone should be the installed default (e.g., US/Eastern).
274 # Run `make -C time echo-zonenames' to see a list of available zone names.
275 # The local timezone can be changed with `zic -l TIMEZONE' at any time.
280 # Where to install the "localtime" timezone file; this is the file whose
281 # contents $(localtime) specifies. If this is a relative pathname, it is
282 # relative to $(zonedir). It is a good idea to put this somewhere
283 # other than there, so the zoneinfo directory contains only universal data,
284 # localizing the configuration data elsewhere.
285 ifndef localtime-file
286 localtime-file = $(sysconfdir)/localtime
287 inst_localtime-file = $(install_root)$(localtime-file)
290 # What to use for leap second specifications in compiling the default
291 # timezone files. Set this to `/dev/null' for no leap second handling as
292 # 1003.1 requires, or to `leapseconds' for proper leap second handling.
293 # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'.
294 # This variable determines the default: if it's `/dev/null',
295 # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE.
297 leapseconds = /dev/null
300 # What timezone's DST rules should be used when a POSIX-style TZ
301 # environment variable doesn't specify any rules. For 1003.1 compliance
302 # this timezone must use rules that are as U.S. federal law defines DST.
303 # Run `make -C time echo-zonenames' to see a list of available zone names.
304 # This setting can be changed with `zic -p TIMEZONE' at any time.
305 # If you want POSIX.1 compatibility, use `America/New_York'.
307 posixrules = America/New_York
310 # Where to install the "posixrules" timezone file; this is file
311 # whose contents $(posixrules) specifies. If this is a relative
312 # pathname, it is relative to $(zonedir).
313 ifndef posixrules-file
314 posixrules-file = posixrules
318 # Directory where your system's native header files live.
319 # This is used on Unix systems to generate some GNU libc header files.
321 sysincludedir = /usr/include
325 # Commands to install files.
327 INSTALL_DATA = $(INSTALL) -m 644
329 ifndef INSTALL_SCRIPT
330 INSTALL_SCRIPT = $(INSTALL)
332 ifndef INSTALL_PROGRAM
333 INSTALL_PROGRAM = $(INSTALL)
340 # The name of the C compiler.
341 # If you've got GCC, and it works, use it.
342 ifeq ($(origin CC),default)
346 # The name of the C compiler to use for compilations of programs to run on
347 # the host that is building the library. If you set CC to a
348 # cross-compiler, you must set this to the normal compiler.
353 # Default flags to pass the C compiler.
354 ifndef default_cflags
355 ifeq ($(release),stable)
356 default_cflags := -g -O2
358 default_cflags := -g -O
362 # Flags to pass the C compiler when assembling preprocessed assembly code
363 # (`.S' files). On some systems the assembler doesn't understand the `#' line
364 # directives the preprocessor produces. If you have troubling compiling
365 # assembly code, try using -P here to suppress these directives.
370 # ELF always supports init/fini sections
375 # Installed name of the startup code.
376 ifneq ($(have-initfini),yes)
377 # When not having init/fini, there is just one startfile, called crt0.o.
378 start-installed-name = crt0.o
380 # On systems having init/fini, crt0.o is called crt1.o, and there are
381 # some additional bizarre files.
382 start-installed-name = crt1.o
384 # On systems that do not need a special startfile for statically linked
385 # binaries, simply set it to the normal name.
386 ifndef static-start-installed-name
387 static-start-installed-name = $(start-installed-name)
390 ifeq (yesyesyes,$(build-shared)$(elf)$(have-z-combreloc))
391 combreloc-LDFLAGS = -Wl,-z,combreloc
392 LDFLAGS.so += $(combreloc-LDFLAGS)
393 LDFLAGS-rtld += $(combreloc-LDFLAGS)
396 ifeq (yes,$(have-z-relro))
397 relro-LDFLAGS = -Wl,-z,relro
398 LDFLAGS.so += $(relro-LDFLAGS)
399 LDFLAGS-rtld += $(relro-LDFLAGS)
402 # Command for linking programs with the C library.
404 +link = $(CC) -nostdlib -nostartfiles -o $@ \
405 $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
406 $(combreloc-LDFLAGS) $(relro-LDFLAGS) \
407 $(addprefix $(csu-objpfx),$(start-installed-name)) \
408 $(+preinit) $(+prector) \
409 $(filter-out $(addprefix $(csu-objpfx),start.o \
410 $(start-installed-name))\
411 $(+preinit) $(link-extra-libs) \
412 $(common-objpfx)libc% $(+postinit),$^) \
413 $(link-extra-libs) $(link-libc) $(+postctor) $(+postinit)
415 # Command for statically linking programs with the C library.
417 +link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \
418 $(sysdep-LDFLAGS) $(LDFLAGS) \
419 $(addprefix $(csu-objpfx),$(static-start-installed-name)) \
420 $(+preinit) $(+prector) \
421 $(filter-out $(addprefix $(csu-objpfx),start.o \
422 $(start-installed-name))\
423 $(+preinit) $(link-extra-libs-static) \
424 $(common-objpfx)libc% $(+postinit),$^) \
425 $(link-extra-libs-static) $(link-libc-static) $(+postctor) $(+postinit)
427 # Command for statically linking bounded-pointer programs with the C library.
429 +link-bounded = $(CC) -nostdlib -nostartfiles -static -fbounded-pointers -o $@ \
430 $(sysdep-LDFLAGS) $(LDFLAGS) \
431 $(addprefix $(csu-objpfx),b$(static-start-installed-name)) \
432 $(+preinit) $(+prector) \
433 $(filter-out $(addprefix $(csu-objpfx),start.ob \
434 $(start-installed-name))\
435 $(+preinit) $(link-extra-libs-bounded) \
436 $(common-objpfx)libc% $(+postinit),$^) \
437 $(link-extra-libs-bounded) $(link-libc-bounded) $(+postctor) $(+postinit)
439 ifndef config-LDFLAGS
440 ifeq (yesyes,$(build-shared)$(elf))
441 config-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name)
445 ifeq (yes,$(build-shared))
447 # We need the versioned name of libc.so in the deps of $(others) et al
448 # so that the symlink to libc.so is created before anything tries to
449 # run the linked programs.
450 link-libc = -Wl,-rpath-link=$(rpath-link) \
451 $(common-objpfx)libc.so$(libc.so-version) \
452 $(common-objpfx)$(patsubst %,$(libtype.oS),c) $(gnulib)
453 # This is how to find at build-time things that will be installed there.
454 rpath-dirs = math elf dlfcn nss nis rt resolv crypt
456 ifneq (,$(filter aix aix%,$(config-os)))
457 link-libc = $(common-objpfx)libc.a \
458 $(common-objpfx)$(patsubst %,$(libtype.oS),c) $(gnulib)
459 rpath-dirs = math dlfcn nss nis rt resolv crypt
463 $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
464 elfobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)elf)
466 nssobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nss)
467 resolvobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)resolv)
468 link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib)
472 # Differences in the linkers on the various platforms.
474 LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN'
475 LDFLAGS-soname-fname = -Wl,-soname,$(@F)
476 LDFLAGS-rdynamic = -rdynamic
477 LDFLAGS-Bsymbolic = -Bsymbolic
479 ifneq (,$(filter aix aix%,$(config-os)))
480 LDFLAGS-rpath-ORIGIN =
481 LDFLAGS-soname-fname =
482 LDFLAGS-rdynamic = -Wl,-bdynamic
483 LDFLAGS-Bsymbolic = -Wl,-bsymbolic
487 # Choose the default search path for the dynamic linker based on
488 # where we will install libraries.
489 ifneq ($(libdir),$(slibdir))
490 default-rpath = $(slibdir):$(libdir)
492 default-rpath = $(libdir)
495 ifndef link-extra-libs
496 ifeq (yes,$(build-shared))
497 ifneq ($(common-objpfx),$(objpfx))
498 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),\
499 $(wildcard $(common-objpfx)$(lib).so$($(notdir $(lib)).so-version) \
500 $(objpfx)$(lib).so$($(notdir $(lib)).so-version)))
502 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).so$($(notdir $(lib)).so-version))
505 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a)
509 # The static libraries.
510 ifeq (yes,$(build-static))
511 link-libc-static = $(common-objpfx)libc.a $(static-gnulib) $(common-objpfx)libc.a
512 link-extra-libs-static = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a)
514 ifeq (yes,$(build-shared))
515 # We can try to link the programs with lib*_pic.a...
516 link-libc-static = $(static-gnulib) $(common-objpfx)libc_pic.a
517 link-extra-libs-static = $(link-extra-libs)
520 link-libc-bounded = $(common-objpfx)libc_b.a $(gnulib) $(common-objpfx)libc_b.a
521 link-extra-libs-bounded = $(foreach lib,$(LDLIBS-$(@F:%-bp=%)),$(common-objpfx)$(lib)_b.a)
524 ifneq ($(have-as-needed),yes)
525 libgcc_eh := -lgcc_eh
527 libgcc_eh := -Wl,--as-needed -lgcc_s$(libgcc_s_suffix) -Wl,--no-as-needed
529 ifneq ($(have-cc-with-libunwind),yes)
530 gnulib := -lgcc $(libgcc_eh)
531 static-gnulib := -lgcc -lgcc_eh
533 gnulib := -lgcc $(libgcc_eh) -lunwind
534 static-gnulib := -lgcc -lgcc_eh -lunwind
538 +preinit = $(addprefix $(csu-objpfx),crti.o)
539 +postinit = $(addprefix $(csu-objpfx),crtn.o)
540 +prector = `$(CC) --print-file-name=crtbegin.o`
541 +postctor = `$(CC) --print-file-name=crtend.o`
542 +interp = $(addprefix $(elf-objpfx),interp.os)
544 csu-objpfx = $(common-objpfx)csu/
545 elf-objpfx = $(common-objpfx)elf/
547 # How to run a program we just linked with our library.
548 # The program binary is assumed to be $(word 2,$^).
549 built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
550 ifeq (yesyes,$(build-shared)$(elf))
552 sysdep-library-path = \
553 $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\
554 $(filter -Wl$(comma)-rpath-link=%,\
555 $(sysdep-LDFLAGS)))))
556 run-program-prefix = $(if $(filter $(notdir $(built-program-file)),\
558 $(elf-objpfx)$(rtld-installed-name) \
559 --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)))
563 # Never use $(run-program-prefix) for the statically-linked %-bp test programs
564 built-program-cmd = $(patsubst %,$(run-program-prefix),\
565 $(filter-out %-bp,$(built-program-file))) \
566 $(built-program-file)
576 # Extra flags to pass to GCC.
577 ifeq ($(all-warnings),yes)
578 +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
580 +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes
583 # This is the program that generates makefile dependencies from C source files.
584 # The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy
585 # targets for headers so that removed headers don't break the build.
587 +mkdep = $(CC) -M -MP
590 # The program that makes Emacs-style TAGS files.
593 # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
594 # perhaps others) to preprocess assembly code in some cases.
597 # To force installation of files even if they are older than the
598 # installed files. This variable is included in the dependency list
599 # of all installation targets.
600 ifeq ($(force-install),yes)
601 +force = force-install
607 #### End of configuration variables.
610 # This tells some versions of GNU make before 3.63 not to export all variables.
613 # We want to echo the commands we're running without
614 # umpteen zillion filenames along with it (we use `...' instead)
615 # but we don't want this echoing done when the user has said
616 # he doesn't want to see commands echoed by using -s.
617 ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s
618 +cmdecho := echo >/dev/null
623 # These are the flags given to the compiler to tell
624 # it what sort of optimization and/or debugging output to do.
626 # If `CFLAGS' was defined, use that.
628 +cflags := $(filter-out -I%,$(CFLAGS))
632 # If none of the above worked, default to "-g -O".
633 ifeq "$(strip $(+cflags))" ""
634 +cflags := $(default_cflags)
635 endif # $(+cflags) == ""
637 +cflags := $(+cflags) $(+gccwarn)
640 # Don't duplicate options if we inherited variables from the parent.
641 +cflags := $(sort $(+cflags))
644 # These are flags given to the C compiler to tell it to look for include
645 # files (including ones given in angle brackets) in the current directory,
646 # in the parent library source directory and in the include directory.
647 # `+sysdep-includes' will be defined by Makerules.
648 +includes = -I$(..)include -I. \
649 $(patsubst %/,-I%,$(objpfx)) $(patsubst %/,-I%,$(..)) \
650 $(libio-include) $(includes) \
651 $(+sysdep-includes) $(sysincludes)
653 # Since libio has several internal header files, we use a -I instead
654 # of many little headers in the include directory.
655 libio-include = -I$(..)libio
657 # These are the variables that the implicit compilation rules use.
658 # Note that we can't use -std=* in CPPFLAGS, because it overrides
659 # the implicit -lang-asm and breaks cpp behavior for .S files--notably
660 # it causes cpp to stop predefining __ASSEMBLER__.
661 CPPFLAGS = $($(subdir)-CPPFLAGS) $(+includes) $(defines) \
662 -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
663 $(CPPFLAGS-$(suffix $@)) \
664 $(foreach lib,$(libof-$(basename $(@F))) \
665 $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \
666 $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F)))
667 override CFLAGS = -std=gnu99 \
668 $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \
669 $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F))
671 # If everything is compiled with -fPIC (implicitly) we must tell this by
672 # defining the PIC symbol.
673 ifeq (yes,$(build-pic-default))
677 # Enable object files for different versions of the library.
678 # Various things use $(object-suffixes) to know what all to make.
679 # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
680 # to pass different flags for each flavor.
681 libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o))
682 all-object-suffixes := .o .os .op .og .ob .oS
684 CPPFLAGS-.o = $(pic-default)
685 CFLAGS-.o = $(filter %frame-pointer,$(+cflags))
686 ifeq (yes,$(build-static))
688 object-suffixes += .o
690 ifeq (yes,$(build-shared))
691 # Under --enable-shared, we will build a shared library of PIC objects.
692 # The PIC object files are named foo.os.
693 object-suffixes += .os
694 CPPFLAGS-.os = -DPIC -DSHARED
695 CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag)
696 libtype.os := lib%_pic.a
697 # This can be changed by a sysdep makefile
699 # This one should always stay like this unless there is a very good reason.
702 ifeq (yes,$(build-profile))
703 # Under --enable-profile, we will build a static library of profiled objects.
704 # The profiled object files are named foo.op.
705 object-suffixes += .op
706 CPPFLAGS-.op = -DPROF $(pic-default)
708 libtype.op = lib%_p.a
710 ifeq (yes,$(build-omitfp))
711 # Under --enable-omitfp, we build the library optimized without
712 # debugging information using -fomit-frame-pointer, and build an extra
713 # library with debugging information. The debuggable objects are named foo.og.
714 object-suffixes += .og
715 CPPFLAGS-.og = $(pic-default)
717 CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES
718 CFLAGS-.os += -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES
719 libtype.og = lib%_g.a
723 ifeq (yes,$(build-bounded))
724 # Under --enable-bounded, we build the library with `-fbounded-pointers -g'
725 # to runtime bounds checking. The bounded-pointer objects are named foo.ob.
726 # We disable sibling-call optimizations so that stack traces will be complete
727 # and thus aid debugging, since after all, BPs are a debugging tool.
728 object-suffixes += .ob
729 CPPFLAGS-.ob = -fbounded-pointers $(pic-default)
730 CFLAGS-.ob = -g -O2 -fno-optimize-sibling-calls -fno-strict-aliasing
731 libtype.ob = lib%_b.a
734 object-suffixes-for-libc := $(object-suffixes)
736 ifeq (yes,$(build-shared))
737 # Build special library that contains the static-only routines for libc.
738 object-suffixes-for-libc += .oS
740 # Must build the routines as PIC, though, because they can end up in (users')
741 # shared objects. We don't want to use CFLAGS-os because users may, for
742 # example, make that processor-specific.
743 CFLAGS-.oS = $(CFLAGS-.o) $(PIC-ccflag)
744 CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC -DLIBC_NONSHARED=1
745 libtype.oS = lib%_nonshared.a
748 # The assembler can generate debug information too.
750 ifeq ($(have-cpp-asm-debuginfo),yes)
751 ASFLAGS := $(filter -g%,$(CFLAGS))
756 ASFLAGS += $(ASFLAGS-config)
758 +gnu-stabs = $(shell echo>&2 '*** BARF ON ME')
764 move-if-change = $(SHELL) $(..)scripts/move-if-change
766 -include $(common-objpfx)sysd-dirs
768 ifeq ($(sysd-dirs-done),t)
769 -include $(common-objpfx)sysd-sorted
770 subdirs = $(sorted-subdirs)
773 ifeq (yes, $(build-shared))
775 # This is a pair of implicit rules to preprocess a file with # comments,
776 # %ifdef et al, based on config.h settings or other %include'd files.
777 # We use chained rules instead of a pipeline here so that we can properly
778 # check the exit status of cpp rather than using its bad output when there
779 # is a preprocessing error. Another rule should depend on the output file
780 # `FOO.v', and along with that `FOO.v.i' should be given dependencies
781 # listing both its input files, and any header files that it may reference
783 %.v.i: $(common-objpfx)config.h
784 sed '/^[ ]*#/d;s/^[ ]*%/#/' $(filter-out FORCE %.h,$^) \
785 | $(CC) -E -undef $(CPPFLAGS) \
786 -DASSEMBLER -x assembler-with-cpp - \
790 sed '/^[ ]*#/d;/^[ ]*$$/d' $< > $@T
793 # Process the shlib-versions file, which tells us what shared library
794 # version numbers to use when we install shared objects on this system.
795 # We need to wait until $(subdirs) is complete.
796 ifeq ($(sysd-sorted-done),t)
797 -include $(common-objpfx)soversions.mk
798 ifndef avoid-generated
799 # This lets add-ons give more-specific matches that override defaults
800 # in the top-level file.
801 $(common-objpfx)shlib-versions.v.i: \
802 $(wildcard $(patsubst %, $(..)%/shlib-versions,$(add-ons) $(subdirs)))\
804 $(common-objpfx)soversions.i: $(common-objpfx)shlib-versions.v
805 default_setname='$(filter-out %_default,$(oldest-abi:%=GLIBC_%))'; \
806 while read conf version setname; do \
807 test -n "$$version" && \
808 test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
809 : "$$conf"` != 0 || continue; \
810 if test "x$$version" = xDEFAULT; then \
811 default_setname="$$setname"; \
813 $(abi-default_setname) \
814 lib=`echo $$version | sed 's/=.*$$//'`; \
815 if eval test -z "\$${versioned_$${lib}}"; then \
816 eval versioned_$${lib}=yes; \
817 number=`echo $$version | sed "s/^.*=//"`; \
818 echo $$lib $$number $${setname:-$${default_setname}}; \
821 done < $< > $@T; exit 0
823 $(common-objpfx)soversions.mk: $(common-objpfx)soversions.i
824 (while read lib number setname; do \
826 [0-9]*) echo "$$lib.so-version=.$$number"; \
827 echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\
828 *) echo "$$lib.so-version=$$number"; \
829 echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\
832 echo soversions.mk-done = t;) < $< > $@T; exit 0
837 postclean-generated += soversions.mk soversions.i \
838 shlib-versions.v shlib-versions.v.i
840 # Generate the header containing the names of all shared libraries.
841 # We use a stamp file to avoid uncessary recompilations.
842 before-compile += $(common-objpfx)gnu/lib-names.h
843 ifeq ($(soversions.mk-done),t)
844 $(common-objpfx)gnu/lib-names.h: $(common-objpfx)gnu/lib-names.stmp; @:
845 ifneq (,$(findstring aix,$(config-os)))
846 $(common-objpfx)gnu/lib-names.stmp: $(..)sysdeps/unix/sysv/aix/gnu/lib-names.h
847 $(make-target-directory)
848 @rm -f ${@:stmp=T} $@
849 @cp $(..)sysdeps/unix/sysv/aix/gnu/lib-names.h $(common-objpfx)gnu
852 $(common-objpfx)gnu/lib-names.stmp: $(common-objpfx)soversions.mk
853 $(make-target-directory)
854 @rm -f ${@:stmp=T} $@
855 (echo '/* This file is automatically generated.';\
856 echo ' It defines macros to allow user program to find the shared';\
857 echo ' library files which come as part of GNU libc. */';\
858 echo '#ifndef __GNU_LIB_NAMES_H'; \
859 echo '#define __GNU_LIB_NAMES_H 1'; \
861 (libs='$(all-sonames)';\
862 for l in $$libs; do \
863 name=`echo $$l | sed 's/.*=//'`; \
864 upname=`echo $$l | sed 's/=.*//' | \
865 tr 'abcdefghijklmnopqrstuvwxyz-' \
866 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \
867 upname2=`echo $$name | sed 's/[.]so.*//' | \
868 tr 'abcdefghijklmnopqrstuvwxyz-' \
869 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \
870 echo "#define $${upname}_SO \"$$name\""; \
871 if test $$upname != $$upname2; then \
872 echo "#define $${upname2}_SO \"$$name\""; \
876 echo '#endif /* gnu/lib-names.h */';) > ${@:stmp=T}
877 $(move-if-change) ${@:stmp=T} ${@:stmp=h}
882 common-generated += gnu/lib-names.h gnu/lib-names.stmp
884 # The name under which the run-time dynamic linker is installed.
885 # We are currently going for the convention that `/lib/ld.so.1'
886 # names the SVR4/ELF ABI-compliant dynamic linker.
887 ifndef rtld-installed-name
889 rtld-installed-name = $(ld.so-version)
891 rtld-installed-name = ld.so.1
895 ifndef rtld-version-installed-name
896 rtld-version-installed-name = ld-$(version).so
904 ifeq ($(build-shared),yes)
905 libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
907 libdl = $(common-objpfx)dlfcn/libdl.a
910 ifneq (,$(findstring aix,$(config-os)))
911 ifeq ($(build-shared),yes)
913 libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
915 # No libdl without shared libs on AIX
920 # No ELF, no AIX - no libdl, at least for now.
926 # These are the subdirectories containing the library source. The order
927 # is more or less arbitrary. The sorting step will take care of the
928 # dependencies. Only the $(binfmt-subdir) should always be kept at the
930 all-subdirs = csu assert ctype locale intl catgets math setjmp signal \
931 stdlib stdio-common libio malloc string wcsmbs time dirent \
932 grp pwd posix io termios resource misc socket sysvipc gmon \
933 gnulib iconv iconvdata wctype manual shadow po argp \
934 crypt $(add-ons) nss localedata timezone rt conform debug \
935 $(sysdep-subdirs) $(dlfcn) $(binfmt-subdir)
936 all-subdirs := $(filter-out $(sysdep-inhibit-subdirs),$(all-subdirs))
938 # The mach and hurd subdirectories have many generated header files which
939 # much of the rest of the library depends on, so it is best to build them
940 # first (and mach before hurd, at that). The before-compile additions in
941 # sysdeps/{mach,hurd}/Makefile should make it reliably work for these files
942 # not to exist when making in other directories, but it will be slower that
943 # way with more somewhat expensive `make' invocations.
944 subdirs := $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \
945 $(filter-out mach hurd,$(subdirs))
947 ifndef avoid-generated
948 all-Subdirs-files = $(wildcard $(config-sysdirs:%=$(..)%/Subdirs))
949 $(common-objpfx)sysd-dirs: $(common-objpfx)config.make $(all-Subdirs-files)
950 $(AWK) 'BEGIN { subdirs = ""; inhibit = "" }; \
952 /^[^-]/ { subdirs = subdirs " " $$0 }; \
953 /^-/ { inhibit = inhibit " " substr($$0, 2) }; \
954 END { printf "sysdep-subdirs =%s\n", subdirs; \
955 printf "sysdep-inhibit-subdirs =%s\n", inhibit; \
956 print "sysd-dirs-done = t" }' \
957 $(patsubst $<,/dev/null,$^) > $@-tmp
960 all-Depend-files = $(wildcard $(..)*/Depend)
961 $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk $(all-Depend-files) \
962 $(common-objpfx)sysd-dirs $(..)Makeconfig
963 { { dirs='$(patsubst $(..)%/Depend,%,$(filter %/Depend,$^))'; \
964 for d in $$dirs; do \
966 echo "depend $$d $$on"; \
967 done < $(..)$$d/Depend; \
969 for f in $(all-subdirs); do \
972 } | $(AWK) -f $< && \
973 echo sysd-sorted-done = t; \
978 # Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here.
979 sysdep-makeconfigs := $(wildcard $(patsubst %,$(..)%/Makeconfig,\
980 $(config-sysdirs) $(add-ons)))
982 ifneq (,$(sysdep-makeconfigs))
983 include $(sysdep-makeconfigs)
987 endif # Makeconfig not yet included