1 # Copyright (C) 1991-2000, 2001 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 # We have a special subdir for each binary format.
87 # For now, only ELF is fully supported.
91 # This is probably better than nothing.
95 # Complete path to sysdep dirs.
96 export full_config_sysdirs := $(addprefix $(..),$(config-sysdirs))
98 # Run config.status to update config.make and config.h. We don't show the
99 # dependence of config.h to Make, because it is only touched when it
100 # changes and so config.status would be run every time; the dependence of
101 # config.make should suffice to force regeneration and re-exec, and the new
102 # image will notice if config.h changed.
103 $(common-objpfx)config.make: $(common-objpfx)config.status \
104 $(..)config.make.in $(..)config.h.in
105 cd $(<D); $(SHELL) $(<F)
107 # Find all the sysdeps configure fragments, to make sure we re-run
108 # configure when any of them changes.
109 $(common-objpfx)config.status: $(..)version.h $(..)configure \
110 $(foreach dir,$(full_config_sysdirs),\
114 $(firstword $(wildcard \
115 $(addprefix $(dir)/,configure configure.in)))))
116 @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
117 echo The GNU C library has not been configured. >&2; \
118 echo Run \`configure\' to configure it before building. >&2; \
119 echo Try \`configure --help\' for more details. >&2; \
122 # We don't want CPPFLAGS to be exported to the command running configure.
125 # Get the user's configuration parameters.
126 ifneq ($(wildcard $(..)configparms),)
127 include $(..)configparms
130 ifneq ($(wildcard $(common-objpfx)configparms),)
131 include $(common-objpfx)configparms
136 #### These are the configuration variables. You can define values for
137 #### the variables below in the file `configparms'.
138 #### Do NOT edit this file.
142 # Set this to either `stdio' or `libio', to compile in either GNU stdio
148 # Common prefix for machine-independent installation directories.
149 ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value.
153 # Decide whether we shall build the programs or not. We always do this
154 # unless the user tells us (in configparms) or we are building for a
156 ifndef build-programs
157 ifneq ($(config-os),none)
164 # Common prefix for machine-dependent installation directories.
165 ifeq ($(origin exec_prefix),undefined)
166 exec_prefix = $(prefix)
169 # Where to install the library and object files.
171 libdir = $(exec_prefix)/lib
173 inst_libdir = $(install_root)$(libdir)
175 # Where to install the shared library and dynamic linker.
177 slibdir = $(exec_prefix)/lib
179 inst_slibdir = $(install_root)$(slibdir)
181 # Prefix to put on files installed in $(libdir). For libraries `libNAME.a',
182 # the prefix is spliced between `lib' and the name, so the linker switch
183 # `-l$(libprefix)NAME' finds the library; for other files the prefix is
184 # just prepended to the whole file name.
185 ifeq ($(origin libprefix),undefined)
189 # Where to install the header files.
191 includedir = $(exec_prefix)/include
193 inst_includedir = $(install_root)$(includedir)
195 # Where to install machine-independent data files.
196 # These are the timezone database, and the locale database.
198 datadir = $(prefix)/share
200 inst_datadir = $(install_root)$(datadir)
202 # Where to install the timezone data files (which are machine-independent).
204 zonedir = $(datadir)/zoneinfo
206 inst_zonedir = $(install_root)$(zonedir)
208 # Where to install the locale files.
210 localedir = $(libdir)/locale
212 inst_localedir = $(install_root)$(localedir)
214 # Where to install the message catalog data files (which are
215 # machine-independent).
217 msgcatdir = $(datadir)/locale
219 inst_msgcatdir = $(install_root)$(msgcatdir)
221 # Where to install the locale charmap source files.
223 i18ndir = $(datadir)/i18n
225 inst_i18ndir = $(install_root)$(i18ndir)
227 # Where to install the shared object for charset transformation.
229 gconvdir = $(libdir)/gconv
231 inst_gconvdir = $(install_root)$(gconvdir)
233 # Where to install programs.
235 bindir = $(exec_prefix)/bin
237 inst_bindir = $(install_root)$(bindir)
239 # Where to install internal programs.
241 libexecdir = $(exec_prefix)/libexec
243 inst_libexecdir = $(install_root)$(libexecdir)
245 # Where to install administrative programs.
247 rootsbindir = $(exec_prefix)/sbin
249 inst_rootsbindir = $(install_root)$(rootsbindir)
252 sbindir = $(exec_prefix)/sbin
254 inst_sbindir = $(install_root)$(sbindir)
256 # Where to install the Info files.
258 infodir = $(prefix)/info
260 inst_infodir = $(install_root)$(infodir)
262 # Where to install default configuration files. These include the local
263 # timezone specification and network data base files.
265 sysconfdir = $(prefix)/etc
267 inst_sysconfdir = $(install_root)$(sysconfdir)
269 # What timezone should be the installed default (e.g., US/Eastern).
270 # Run `make -C time echo-zonenames' to see a list of available zone names.
271 # The local timezone can be changed with `zic -l TIMEZONE' at any time.
276 # Where to install the "localtime" timezone file; this is the file whose
277 # contents $(localtime) specifies. If this is a relative pathname, it is
278 # relative to $(zonedir). It is a good idea to put this somewhere
279 # other than there, so the zoneinfo directory contains only universal data,
280 # localizing the configuration data elsewhere.
281 ifndef localtime-file
282 localtime-file = $(sysconfdir)/localtime
283 inst_localtime-file = $(install_root)$(localtime-file)
286 # What to use for leap second specifications in compiling the default
287 # timezone files. Set this to `/dev/null' for no leap second handling as
288 # 1003.1 requires, or to `leapseconds' for proper leap second handling.
289 # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'.
290 # This variable determines the default: if it's `/dev/null',
291 # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE.
293 leapseconds = /dev/null
296 # What timezone's DST rules should be used when a POSIX-style TZ
297 # environment variable doesn't specify any rules. For 1003.1 compliance
298 # this timezone must use rules that are as U.S. federal law defines DST.
299 # Run `make -C time echo-zonenames' to see a list of available zone names.
300 # This setting can be changed with `zic -p TIMEZONE' at any time.
301 # If you want POSIX.1 compatibility, use `America/New_York'.
303 posixrules = America/New_York
306 # Where to install the "posixrules" timezone file; this is file
307 # whose contents $(posixrules) specifies. If this is a relative
308 # pathname, it is relative to $(zonedir).
309 ifndef posixrules-file
310 posixrules-file = posixrules
314 # Directory where your system's native header files live.
315 # This is used on Unix systems to generate some GNU libc header files.
317 sysincludedir = /usr/include
321 # Commands to install files.
323 INSTALL_DATA = $(INSTALL) -m 644
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 # Command for linking programs with the C library.
385 +link = $(CC) -nostdlib -nostartfiles -o $@ \
386 $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
387 $(addprefix $(csu-objpfx),$(start-installed-name)) \
388 $(+preinit) $(+prector) \
389 $(filter-out $(addprefix $(csu-objpfx),start.o \
390 $(start-installed-name))\
391 $(+preinit) $(link-extra-libs) \
392 $(common-objpfx)libc% $(+postinit),$^) \
393 $(link-extra-libs) $(link-libc) $(+postctor) $(+postinit)
395 # Command for statically linking programs with the C library.
397 +link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \
398 $(sysdep-LDFLAGS) $(LDFLAGS) \
399 $(addprefix $(csu-objpfx),$(static-start-installed-name)) \
400 $(+preinit) $(+prector) \
401 $(filter-out $(addprefix $(csu-objpfx),start.o \
402 $(start-installed-name))\
403 $(+preinit) $(link-extra-libs-static) \
404 $(common-objpfx)libc% $(+postinit),$^) \
405 $(link-extra-libs-static) $(link-libc-static) $(+postctor) $(+postinit)
407 # Command for statically linking bounded-pointer programs with the C library.
409 +link-bounded = $(CC) -nostdlib -nostartfiles -static -fbounded-pointers -o $@ \
410 $(sysdep-LDFLAGS) $(LDFLAGS) \
411 $(addprefix $(csu-objpfx),b$(static-start-installed-name)) \
412 $(+preinit) $(+prector) \
413 $(filter-out $(addprefix $(csu-objpfx),start.ob \
414 $(start-installed-name))\
415 $(+preinit) $(link-extra-libs-bounded) \
416 $(common-objpfx)libc% $(+postinit),$^) \
417 $(link-extra-libs-bounded) $(link-libc-bounded) $(+postctor) $(+postinit)
419 ifndef config-LDFLAGS
420 ifeq (yesyes,$(build-shared)$(elf))
421 config-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name)
425 ifeq (yes,$(build-shared))
427 # We need the versioned name of libc.so in the deps of $(others) et al
428 # so that the symlink to libc.so is created before anything tries to
429 # run the linked programs.
430 link-libc = -Wl,-rpath-link=$(rpath-link) \
431 $(common-objpfx)libc.so$(libc.so-version) \
432 $(common-objpfx)$(patsubst %,$(libtype.oS),c) $(gnulib)
433 # This is how to find at build-time things that will be installed there.
434 rpath-dirs = math elf dlfcn nss nis rt resolv crypt
436 ifneq (,$(findstring aix,$(config-os)))
437 link-libc = $(common-objpfx)libc.a \
438 $(common-objpfx)$(patsubst %,$(libtype.oS),c) $(gnulib)
439 rpath-dirs = math dlfcn nss nis rt resolv crypt
443 $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
444 elfobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)elf)
446 nssobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nss)
447 resolvobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)resolv)
448 link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib)
452 # Differences in the linkers on the various platforms.
454 LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN'
455 LDFLAGS-soname-fname = -Wl,-soname,$(@F)
456 LDFLAGS-rdynamic = -rdynamic
457 LDFLAGS-Bsymbolic = -Bsymbolic
459 ifneq (,$(findstring aix,$(config-os)))
460 LDFLAGS-rpath-ORIGIN =
461 LDFLAGS-soname-fname =
462 LDFLAGS-rdynamic = -Wl,-bdynamic
463 LDFLAGS-Bsymbolic = -Wl,-bsymbolic
467 # Choose the default search path for the dynamic linker based on
468 # where we will install libraries.
469 ifneq ($(libdir),$(slibdir))
470 default-rpath = $(slibdir):$(libdir)
472 default-rpath = $(libdir)
475 ifndef link-extra-libs
476 ifeq (yes,$(build-shared))
477 ifneq ($(common-objpfx),$(objpfx))
478 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),\
479 $(wildcard $(common-objpfx)$(lib).so$($(notdir $(lib)).so-version) \
480 $(objpfx)$(lib).so$($(notdir $(lib)).so-version)))
482 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).so$($(notdir $(lib)).so-version))
485 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a)
489 # The static libraries.
490 ifeq (yes,$(build-static))
491 link-libc-static = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a
492 link-extra-libs-static = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a)
494 ifeq (yes,$(build-shared))
495 # We can try to link the programs with lib*_pic.a...
496 link-libc-static = $(gnulib) $(common-objpfx)libc_pic.a
497 link-extra-libs-static = $(link-extra-libs)
500 link-libc-bounded = $(common-objpfx)libc_b.a $(gnulib) $(common-objpfx)libc_b.a
501 link-extra-libs-bounded = $(foreach lib,$(LDLIBS-$(@F:%-bp=%)),$(common-objpfx)$(lib)_b.a)
507 +preinit = $(addprefix $(csu-objpfx),crti.o)
508 +postinit = $(addprefix $(csu-objpfx),crtn.o)
509 +prector = `$(CC) --print-file-name=crtbegin.o`
510 +postctor = `$(CC) --print-file-name=crtend.o`
511 +interp = $(addprefix $(elf-objpfx),interp.os)
513 csu-objpfx = $(common-objpfx)csu/
514 elf-objpfx = $(common-objpfx)elf/
516 # How to run a program we just linked with our library.
517 # The program binary is assumed to be $(word 2,$^).
518 built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
519 ifeq (yesyes,$(build-shared)$(elf))
521 sysdep-library-path = \
522 $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\
523 $(filter -Wl$(comma)-rpath-link=%,\
524 $(sysdep-LDFLAGS)))))
525 run-program-prefix = $(if $(findstring $(notdir $(built-program-file)), $(tests-static)),, \
526 $(elf-objpfx)$(rtld-installed-name) \
527 --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)))
531 # Never use $(run-program-prefix) for the statically-linked %-bp test programs
532 built-program-cmd = $(patsubst %,$(run-program-prefix),\
533 $(filter-out %-bp,$(built-program-file))) \
534 $(built-program-file)
544 # Extra flags to pass to GCC.
545 ifeq ($(all-warnings),yes)
546 +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
548 +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes
551 # This is the program that generates makefile
552 # dependencies from C source files.
557 # The program that makes Emacs-style TAGS files.
560 # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
561 # perhaps others) to preprocess assembly code in some cases.
564 # To force installation of files even if they are older than the
565 # installed files. This variable is included in the dependency list
566 # of all installation targets.
567 ifeq ($(force-install),yes)
568 +force = force-install
574 #### End of configuration variables.
577 # This tells some versions of GNU make before 3.63 not to export all variables.
580 # We want to echo the commands we're running without
581 # umpteen zillion filenames along with it (we use `...' instead)
582 # but we don't want this echoing done when the user has said
583 # he doesn't want to see commands echoed by using -s.
584 ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s
585 +cmdecho := echo >/dev/null
590 # These are the flags given to the compiler to tell
591 # it what sort of optimization and/or debugging output to do.
593 # If `CFLAGS' was defined, use that.
595 +cflags := $(filter-out -I%,$(CFLAGS))
599 # If none of the above worked, default to "-g -O".
600 ifeq "$(strip $(+cflags))" ""
601 +cflags := $(default_cflags)
602 endif # $(+cflags) == ""
604 +cflags := $(+cflags) $(+gccwarn)
607 # Don't duplicate options if we inherited variables from the parent.
608 +cflags := $(sort $(+cflags))
611 # These are flags given to the C compiler to tell it to look for include
612 # files (including ones given in angle brackets) in the current directory,
613 # in the parent library source directory and in the include directory.
614 # `+sysdep-includes' will be defined by Makerules.
615 +includes = -I$(..)include -I. \
616 $(patsubst %/,-I%,$(objpfx)) $(patsubst %/,-I%,$(..)) \
617 $($(stdio)-include) $(includes) \
618 $(+sysdep-includes) $(last-includes) $(sysincludes)
620 # Since libio has several internal header files, we use a -I instead
621 # of many little headers in the include directory.
622 libio-include = -I$(..)libio
624 # These are the variables that the implicit compilation rules use.
625 CPPFLAGS = $($(subdir)-CPPFLAGS) $(+includes) $(defines) \
626 -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
627 $(CPPFLAGS-$(suffix $@)) $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F))
628 override CFLAGS = $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \
629 $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F))
631 # If everything is compiled with -fPIC (implicitly) we must tell this by
632 # defining the PIC symbol.
633 ifeq (yes,$(build-pic-default))
637 # Enable object files for different versions of the library.
638 # Various things use $(object-suffixes) to know what all to make.
639 # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
640 # to pass different flags for each flavor.
641 libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o))
642 all-object-suffixes := .o .os .op .og .ob .oS
644 CPPFLAGS-.o = $(pic-default)
645 CFLAGS-.o = $(filter %frame-pointer,$(+cflags))
646 ifeq (yes,$(build-static))
648 object-suffixes += .o
650 ifeq (yes,$(build-shared))
651 # Under --enable-shared, we will build a shared library of PIC objects.
652 # The PIC object files are named foo.os.
653 object-suffixes += .os
654 CPPFLAGS-.os = -DPIC -DSHARED
655 CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag)
656 libtype.os := lib%_pic.a
657 # This can be changed by a sysdep makefile
660 ifeq (yes,$(build-profile))
661 # Under --enable-profile, we will build a static library of profiled objects.
662 # The profiled object files are named foo.op.
663 object-suffixes += .op
664 CPPFLAGS-.op = -DPROF $(pic-default)
666 libtype.op = lib%_p.a
668 ifeq (yes,$(build-omitfp))
669 # Under --enable-omitfp, we build the library optimized without
670 # debugging information using -fomit-frame-pointer, and build an extra
671 # library with debugging information. The debuggable objects are named foo.og.
672 object-suffixes += .og
673 CPPFLAGS-.og = $(pic-default)
675 CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES
676 CFLAGS-.os += -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES
677 libtype.og = lib%_g.a
681 ifeq (yes,$(build-bounded))
682 # Under --enable-bounded, we build the library with `-fbounded-pointers -g'
683 # to runtime bounds checking. The bounded-pointer objects are named foo.ob.
684 # We disable sibling-call optimizations so that stack traces will be complete
685 # and thus aid debugging, since after all, BPs are a debugging tool.
686 object-suffixes += .ob
687 CPPFLAGS-.ob = -fbounded-pointers $(pic-default)
688 CFLAGS-.ob = -g -O2 -fno-optimize-sibling-calls -fno-strict-aliasing
689 libtype.ob = lib%_b.a
692 object-suffixes-for-libc := $(object-suffixes)
694 ifeq (yes,$(build-shared))
695 # Build special library that contains the static-only routines for libc.
696 object-suffixes-for-libc += .oS
698 # Must build the routines as PIC, though, because they can end up in (users')
699 # shared objects. We don't want to use CFLAGS-os because users may, for
700 # example, make that processor-specific.
701 CFLAGS-.oS = $(CFLAGS-.o) $(pic-ccflag)
702 CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC
703 libtype.oS = lib%_nonshared.a
707 +gnu-stabs = $(shell echo>&2 '*** BARF ON ME')
713 move-if-change = $(SHELL) $(..)scripts/move-if-change
715 -include $(common-objpfx)sysd-dirs
717 ifeq ($(sysd-dirs-done),t)
718 -include $(common-objpfx)sysd-sorted
719 subdirs = $(sorted-subdirs)
722 ifeq (yes, $(build-shared))
724 # Commands to put in a pipeline to preprocess a file with # comments
725 # %ifdef et al based on config.h settings or other %include'd files.
726 define preprocess-versions
727 sed '/^[ ]*#/d;s/^[ ]*%/#/' \
728 | $(CC) -E -undef -I$(common-objdir) -I$(..)include \
729 -include $(common-objpfx)config.h \
730 -x assembler-with-cpp - \
731 | sed '/^[ ]*#/d;/^[ ]*$$/d'
734 # Process the shlib-versions file, which tells us what shared library
735 # version numbers to use when we install shared objects on this system.
736 # We need to wait until $(subdirs) is complete.
737 ifeq ($(sysd-sorted-done),t)
738 -include $(common-objpfx)soversions.mk
739 ifndef avoid-generated
740 $(common-objpfx)soversions.i: $(..)shlib-versions $(..)Makeconfig \
741 $(wildcard $(patsubst %, $(..)%/shlib-versions,\
744 $(common-objpfx)config.make
745 cat $(filter-out $(..)Makeconfig $(common-objpfx)config.make,$^) \
746 | $(preprocess-versions) \
747 | while read conf version setname; do \
748 test -n "$$version" && \
749 test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
750 : "$$conf"` != 0 || continue; \
751 if test "x$$version" = xDEFAULT; then \
752 default_setname="$$setname"; \
754 lib=`echo $$version | sed 's/=.*$$//'`; \
755 if eval test -z "\$${versioned_$${lib}}"; then \
756 eval versioned_$${lib}=yes; \
757 number=`echo $$version | sed "s/^.*=//"`; \
758 echo $$lib $$number $${setname:-$${default_setname}}; \
763 $(common-objpfx)soversions.mk: $(common-objpfx)soversions.i
764 (while read lib number setname; do \
766 [0-9]*) echo "$$lib.so-version=.$$number"; \
767 echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\
768 *) echo "$$lib.so-version=$$number"; \
769 echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\
772 echo soversions.mk-done = t;) < $< > $@T; exit 0
777 postclean-generated += soversions.mk
779 # Generate the header containing the names of all shared libraries.
780 # We use a stamp file to avoid uncessary recompilations.
781 before-compile += $(common-objpfx)gnu/lib-names.h
782 ifeq ($(soversions.mk-done),t)
783 $(common-objpfx)gnu/lib-names.h: $(common-objpfx)gnu/lib-names.stmp; @:
784 ifneq (,$(findstring aix,$(config-os)))
785 $(common-objpfx)gnu/lib-names.stmp: $(..)sysdeps/unix/sysv/aix/gnu/lib-names.h
786 $(make-target-directory)
787 @rm -f ${@:stmp=T} $@
788 @cp $(..)sysdeps/unix/sysv/aix/gnu/lib-names.h $(common-objpfx)gnu
791 $(common-objpfx)gnu/lib-names.stmp: $(common-objpfx)soversions.mk
792 $(make-target-directory)
793 @rm -f ${@:stmp=T} $@
794 (echo '/* This file is automatically generated.';\
795 echo ' It defines macros to allow user program to find the shared';\
796 echo ' library files which come as part of GNU libc. */';\
797 echo '#ifndef __GNU_LIB_NAMES_H'; \
798 echo '#define __GNU_LIB_NAMES_H 1'; \
800 (libs='$(all-sonames)';\
801 for l in $$libs; do \
802 name=`echo $$l | sed 's/.*=//'`; \
803 upname=`echo $$l | sed 's/=.*//' | \
804 tr 'abcdefghijklmnopqrstuvwxyz-' \
805 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \
806 upname2=`echo $$name | sed 's/[.]so.*//' | \
807 tr 'abcdefghijklmnopqrstuvwxyz-' \
808 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \
809 echo "#define $${upname}_SO \"$$name\""; \
810 if test $$upname != $$upname2; then \
811 echo "#define $${upname2}_SO \"$$name\""; \
815 echo '#endif /* gnu/lib-names.h */';) > ${@:stmp=T}
816 $(move-if-change) ${@:stmp=T} ${@:stmp=h}
821 common-generated += gnu/lib-names.h gnu/lib-names.stmp
823 # The name under which the run-time dynamic linker is installed.
824 # We are currently going for the convention that `/lib/ld.so.1'
825 # names the SVR4/ELF ABI-compliant dynamic linker.
826 ifndef rtld-installed-name
828 rtld-installed-name = $(ld.so-version)
830 rtld-installed-name = ld.so.1
834 ifndef rtld-version-installed-name
835 rtld-version-installed-name = ld-$(version).so
843 ifeq ($(build-shared),yes)
844 libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
846 libdl = $(common-objpfx)dlfcn/libdl.a
849 ifneq (,$(findstring aix,$(config-os)))
850 ifeq ($(build-shared),yes)
852 libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
854 # No libdl without shared libs on AIX
859 # No ELF, no AIX - no libdl, at least for now.
865 # These are the subdirectories containing the library source. The order
866 # is more or less arbitrary. The sorting step will take care of the
867 # dependencies. Only the $(binfmt-subdir) should always be kept at the
869 all-subdirs = csu assert ctype locale intl catgets math setjmp signal \
870 stdlib stdio-common $(stdio) malloc string wcsmbs time dirent \
871 grp pwd posix io termios resource misc socket sysvipc gmon \
872 gnulib iconv iconvdata wctype manual shadow po argp \
873 crypt $(add-ons) nss localedata timezone rt conform debug \
874 $(sysdep-subdirs) $(dlfcn) $(binfmt-subdir)
875 all-subdirs := $(filter-out $(sysdep-inhibit-subdirs),$(all-subdirs))
877 # The mach and hurd subdirectories have many generated header files which
878 # much of the rest of the library depends on, so it is best to build them
879 # first (and mach before hurd, at that). The before-compile additions in
880 # sysdeps/{mach,hurd}/Makefile should make it reliably work for these files
881 # not to exist when making in other directories, but it will be slower that
882 # way with more somewhat expensive `make' invocations.
883 subdirs := $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \
884 $(filter-out mach hurd,$(subdirs))
886 ifndef avoid-generated
887 all-Subdirs-files = $(wildcard $(config-sysdirs:%=$(..)%/Subdirs))
888 $(common-objpfx)sysd-dirs: $(common-objpfx)config.make $(all-Subdirs-files)
889 $(AWK) 'BEGIN { subdirs = ""; inhibit = "" }; \
891 /^[^-]/ { subdirs = subdirs " " $$0 }; \
892 /^-/ { inhibit = inhibit " " substr($$0, 2) }; \
893 END { printf "sysdep-subdirs =%s\n", subdirs; \
894 printf "sysdep-inhibit-subdirs =%s\n", inhibit; \
895 print "sysd-dirs-done = t" }' \
896 $(patsubst $<,/dev/null,$^) > $@-tmp
899 all-Depend-files = $(wildcard $(..)*/Depend)
900 $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk $(all-Depend-files) \
901 $(common-objpfx)sysd-dirs $(..)Makeconfig
902 { { dirs='$(patsubst $(..)%/Depend,$(..)%,$(filter %/Depend,$^))';\
903 for d in $$dirs; do \
905 echo "depend $$d $$on"; \
908 for f in $(all-subdirs); do \
911 } | $(AWK) -f $< && \
912 echo sysd-sorted-done = t; \
917 # Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here.
918 sysdep-makeconfigs := $(wildcard $(patsubst %,$(..)%/Makeconfig,\
919 $(config-sysdirs) $(add-ons)))
921 ifneq (,$(sysdep-makeconfigs))
922 include $(sysdep-makeconfigs)
926 endif # Makeconfig not yet included