1 # Copyright (C) 1991-2020 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, see
16 # <https://www.gnu.org/licenses/>.
19 # Makefile configuration options for the GNU C library.
22 This makefile requires GNU Make.
25 all: # Make this the default goal
27 ifneq "$(origin +included-Makeconfig)" "file"
29 +included-Makeconfig := yes
35 # $(common-objdir) is the place to put objects and
36 # such that are not specific to a single subdir.
38 objpfx := $(patsubst %//,%/,$(objdir)/$(subdir)/)
39 common-objpfx = $(objdir)/
40 common-objdir = $(objdir)
42 $(error objdir must be defined by the build-directory Makefile)
45 # Root of the sysdeps tree.
46 sysdep_dir := $(..)sysdeps
47 export sysdep_dir := $(sysdep_dir)
49 # Get the values defined by options to `configure'.
50 include $(common-objpfx)config.make
52 # What flags to give to sources which call user provided callbacks
53 uses-callbacks = -fexceptions
55 # What flags to give to tests which test stack alignment
56 stack-align-test-flags =
58 # Complete path to sysdep dirs.
59 # `configure' writes a definition of `config-sysdirs' in `config.make'.
60 sysdirs := $(foreach D,$(config-sysdirs),$(firstword $(filter /%,$D) $(..)$D))
62 +sysdep_dirs = $(sysdirs)
64 +sysdep_dirs := $(objdir) $(+sysdep_dirs)
67 # Run config.status to update config.make and config.h. We don't show the
68 # dependence of config.h to Make, because it is only touched when it
69 # changes and so config.status would be run every time; the dependence of
70 # config.make should suffice to force regeneration and re-exec, and the new
71 # image will notice if config.h changed.
72 $(common-objpfx)config.make: $(common-objpfx)config.status \
73 $(..)config.make.in $(..)config.h.in
74 cd $(<D); $(SHELL) $(<F)
76 # Find all the sysdeps configure fragments, to make sure we re-run
77 # configure when any of them changes.
78 $(common-objpfx)config.status: $(..)version.h $(..)configure \
79 $(foreach dir,$(sysdirs),\
80 $(wildcard $(dir)/Implies) \
82 $(firstword $(wildcard \
83 $(addprefix $(dir)/,configure configure.ac))))) \
85 $(wildcard $(..)sysdeps/*/preconfigure $(..)sysdeps/*/preconfigure.ac))
86 @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
87 echo The GNU C library has not been configured. >&2; \
88 echo Run \`configure\' to configure it before building. >&2; \
89 echo Try \`configure --help\' for more details. >&2; \
92 # We don't want CPPFLAGS to be exported to the command running configure.
95 # Get the user's configuration parameters.
96 ifneq ($(wildcard $(..)configparms),)
97 include $(..)configparms
100 ifneq ($(wildcard $(common-objpfx)configparms),)
101 include $(common-objpfx)configparms
106 #### These are the configuration variables. You can define values for
107 #### the variables below in the file `configparms'.
108 #### Do NOT edit this file.
112 # Common prefix for machine-independent installation directories.
113 ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value.
117 # Decide whether we shall build the programs or not. We always do this
118 # unless the user tells us (in configparms) or we are building for a
120 ifndef build-programs
121 ifneq ($(config-os),none)
128 # Common prefix for machine-dependent installation directories.
129 ifeq ($(origin exec_prefix),undefined)
130 exec_prefix = $(prefix)
133 # Where to install the library and object files.
135 libdir = $(exec_prefix)/lib
137 inst_libdir = $(install_root)$(libdir)
139 # Where to install the shared library.
141 slibdir = $(exec_prefix)/lib
143 inst_slibdir = $(install_root)$(slibdir)
145 # Where to install the dynamic linker.
149 inst_rtlddir = $(install_root)$(rtlddir)
151 # Prefix to put on files installed in $(libdir). For libraries `libNAME.a',
152 # the prefix is spliced between `lib' and the name, so the linker switch
153 # `-l$(libprefix)NAME' finds the library; for other files the prefix is
154 # just prepended to the whole file name.
155 ifeq ($(origin libprefix),undefined)
159 # Where to install the header files.
161 includedir = $(prefix)/include
163 inst_includedir = $(install_root)$(includedir)
165 # Where to install machine-independent data files.
166 # These are the timezone database, and the locale database.
168 datadir = $(prefix)/share
170 inst_datadir = $(install_root)$(datadir)
172 # Where to install the timezone data files (which are machine-independent).
174 zonedir = $(datadir)/zoneinfo
176 inst_zonedir = $(install_root)$(zonedir)
178 # Where to install the compiled binary locale archive and compiled
179 # binary locale files.
181 complocaledir = $(libdir)/locale
183 inst_complocaledir = $(install_root)$(complocaledir)
185 # Where to install the message catalog data files (which are
186 # machine-independent).
188 localedir = $(datadir)/locale
190 inst_localedir = $(install_root)$(localedir)
192 # Where to install the locale charmap source files.
194 i18ndir = $(datadir)/i18n
196 inst_i18ndir = $(install_root)$(i18ndir)
198 # Where to install the shared object for charset transformation.
200 gconvdir = $(libdir)/gconv
202 inst_gconvdir = $(install_root)$(gconvdir)
204 # Where to install programs.
206 bindir = $(exec_prefix)/bin
208 inst_bindir = $(install_root)$(bindir)
210 # Where to install internal programs.
212 libexecdir = $(exec_prefix)/libexec
214 inst_libexecdir = $(install_root)$(libexecdir)
216 # Where to install administrative programs.
218 rootsbindir = $(exec_prefix)/sbin
220 inst_rootsbindir = $(install_root)$(rootsbindir)
223 sbindir = $(exec_prefix)/sbin
225 inst_sbindir = $(install_root)$(sbindir)
227 # Where to install the Info files.
229 infodir = $(prefix)/info
231 inst_infodir = $(install_root)$(infodir)
233 # Where to install audit libraries.
235 auditdir = $(libdir)/audit
237 inst_auditdir = $(install_root)$(auditdir)
239 # Where to install default configuration files. These include the local
240 # timezone specification and network data base files.
242 sysconfdir = $(prefix)/etc
244 inst_sysconfdir = $(install_root)$(sysconfdir)
246 # Directory for the database files and Makefile for nss_db.
248 vardbdir = $(localstatedir)/db
250 inst_vardbdir = $(install_root)$(vardbdir)
252 # Where to install the "localtime" timezone file; this is the file whose
253 # contents $(localtime) specifies. If this is a relative pathname, it is
254 # relative to $(zonedir). It is a good idea to put this somewhere
255 # other than there, so the zoneinfo directory contains only universal data,
256 # localizing the configuration data elsewhere.
257 ifndef localtime-file
258 localtime-file = $(sysconfdir)/localtime
261 # What to use for leap second specifications in compiling the default
262 # timezone files. Set this to `/dev/null' for no leap second handling as
263 # 1003.1 requires, or to `leapseconds' for proper leap second handling.
264 # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'.
265 # This variable determines the default: if it's `/dev/null',
266 # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE.
268 leapseconds = /dev/null
271 # What timezone's DST rules should be used when a POSIX-style TZ
272 # environment variable doesn't specify any rules. For 1003.1 compliance
273 # this timezone must use rules that are as U.S. federal law defines DST.
274 # Run `make -C time echo-zonenames' to see a list of available zone names.
275 # This setting can be changed with `zic -p TIMEZONE' at any time.
276 # If you want POSIX.1 compatibility, use `America/New_York'.
278 posixrules = America/New_York
281 # Where to install the "posixrules" timezone file; this is file
282 # whose contents $(posixrules) specifies. If this is a relative
283 # pathname, it is relative to $(zonedir).
284 ifndef posixrules-file
285 posixrules-file = posixrules
289 # Directory where your system's native header files live.
290 # This is used on Unix systems to generate some GNU libc header files.
292 sysincludedir = /usr/include
296 # Commands to install files.
298 INSTALL_DATA = $(INSTALL) -m 644
300 ifndef INSTALL_SCRIPT
301 INSTALL_SCRIPT = $(INSTALL)
303 ifndef INSTALL_PROGRAM
304 INSTALL_PROGRAM = $(INSTALL)
311 # The name of the C compiler.
312 # If you've got GCC, and it works, use it.
313 ifeq ($(origin CC),default)
317 # The name of the C compiler to use for compilations of programs to run on
318 # the host that is building the library. If you set CC to a
319 # cross-compiler, you must set this to the normal compiler.
324 # Default flags to pass the C compiler.
325 ifndef default_cflags
326 ifeq ($(release),stable)
327 default_cflags := -g -O2
329 default_cflags := -g -O
333 # Flags to pass the C compiler when assembling preprocessed assembly code
339 # Must be supported by the linker.
340 no-whole-archive = -Wl,--no-whole-archive
341 whole-archive = -Wl,--whole-archive
343 # Installed name of the startup code.
344 # The ELF convention is that the startfile is called crt1.o
345 start-installed-name = crt1.o
346 # On systems that do not need a special startfile for statically linked
347 # binaries, simply set it to the normal name.
348 ifndef static-start-installed-name
349 static-start-installed-name = $(start-installed-name)
352 ifeq (yes,$(enable-static-pie))
353 # Link with rcrt1.o, instead of crt1.o, to call _dl_relocate_static_pie
354 # to relocate static PIE.
355 real-static-start-installed-name = r$(static-start-installed-name)
357 real-static-start-installed-name = $(static-start-installed-name)
360 ifeq (yesyes,$(build-shared)$(have-z-combreloc))
361 combreloc-LDFLAGS = -Wl,-z,combreloc
362 LDFLAGS.so += $(combreloc-LDFLAGS)
363 LDFLAGS-rtld += $(combreloc-LDFLAGS)
366 relro-LDFLAGS = -Wl,-z,relro
367 LDFLAGS.so += $(relro-LDFLAGS)
368 LDFLAGS-rtld += $(relro-LDFLAGS)
370 ifeq (yes,$(have-hash-style))
371 # For the time being we unconditionally use 'both'. At some time we
372 # should declare statically linked code as 'out of luck' and compile
373 # with --hash-style=gnu only.
374 hashstyle-LDFLAGS = -Wl,--hash-style=both
375 LDFLAGS.so += $(hashstyle-LDFLAGS)
376 LDFLAGS-rtld += $(hashstyle-LDFLAGS)
379 ifeq (yes,$(enable-static-pie))
381 # Compile libc.a and libc_p.a with -fPIE/-fpie for static PIE.
382 pie-default = $(pie-ccflag)
383 ifeq (yes,$(have-static-pie))
384 default-pie-ldflag = -static-pie
386 # Static PIE can't have dynamic relocations in read-only segments since
387 # static PIE is mapped into memory by kernel. --eh-frame-hdr is needed
388 # for PIE to support exception.
389 default-pie-ldflag = -Wl,-pie,--no-dynamic-linker,--eh-frame-hdr,-z,text
393 # If lazy relocations are disabled, add the -z now flag. Use
394 # LDFLAGS-lib.so instead of LDFLAGS.so, to avoid adding the flag to
396 ifeq ($(bind-now),yes)
397 LDFLAGS-lib.so += -Wl,-z,now
398 # Extra flags for dynamically linked non-test main programs.
399 link-extra-flags += -Wl,-z,now
402 # Command to run after every final link (executable or shared object).
403 # This is invoked with $(call after-link,...), so it should operate on
404 # the file $1. This can be set to do some sort of post-processing on
405 # binaries, or to perform some sort of static sanity check.
410 # Additional libraries to link into every test.
411 link-extra-libs-tests = $(libsupport)
413 # Command for linking PIE programs with the C library.
415 +link-pie-before-libc = $(if $($(@F)-no-pie),$(no-pie-ldflag),-pie) \
416 -Wl,-O1 -nostdlib -nostartfiles -o $@ \
417 $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
418 $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
419 $(firstword $(CRT-$(@F)) $(csu-objpfx)S$(start-installed-name)) \
420 $(+preinit) $(+prectorS) \
421 $(filter-out $(addprefix $(csu-objpfx),start.o \
422 S$(start-installed-name))\
423 $(+preinit) $(link-extra-libs) \
424 $(common-objpfx)libc% $(+postinit),$^) \
426 +link-pie-after-libc = $(+postctorS) $(+postinit)
428 $(CC) $(link-libc-rpath-link) $(+link-pie-before-libc) $(rtld-LDFLAGS) \
429 $(link-extra-flags) $(link-libc) $(+link-pie-after-libc)
430 $(call after-link,$@)
432 define +link-pie-tests
433 $(CC) $(+link-pie-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \
434 $(+link-pie-after-libc)
435 $(call after-link,$@)
437 define +link-pie-printers-tests
438 $(CC) $(+link-pie-before-libc) $(built-rtld-LDFLAGS) \
439 $(link-libc-printers-tests) $(+link-pie-after-libc)
440 $(call after-link,$@)
443 # Command for statically linking programs with the C library.
445 +link-static-before-libc = -nostdlib -nostartfiles -static -o $@ \
446 $(if $($(@F)-no-pie),$(no-pie-ldflag),$(default-pie-ldflag)) \
447 $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
448 $(firstword $(CRT-$(@F)) $(csu-objpfx)$(real-static-start-installed-name)) \
449 $(+preinit) $(+prectorT) \
450 $(filter-out $(addprefix $(csu-objpfx),start.o \
451 $(start-installed-name))\
452 $(+preinit) $(link-extra-libs-static) \
453 $(common-objpfx)libc% $(+postinit),$^) \
454 $(link-extra-libs-static)
455 +link-static-after-libc = $(+postctorT) $(+postinit)
457 $(CC) $(+link-static-before-libc) $(link-extra-flags) $(link-libc-static) \
458 $(+link-static-after-libc)
459 $(call after-link,$@)
461 define +link-static-tests
462 $(CC) $(+link-static-before-libc) $(link-libc-static-tests) \
463 $(+link-static-after-libc)
464 $(call after-link,$@)
467 # Commands for linking programs with the C library.
469 ifeq (yes,$(build-shared))
470 ifeq (yes,$(cc-pie-default))
471 no-pie-ldflag = -no-pie
473 ifeq (yes,$(build-pie-default))
475 +link-tests = $(+link-pie-tests)
476 +link-printers-tests = $(+link-pie-printers-tests)
477 else # not build-pie-default
478 +link-before-libc = -nostdlib -nostartfiles -o $@ \
479 $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
480 $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
481 $(firstword $(CRT-$(@F)) $(csu-objpfx)$(start-installed-name)) \
482 $(+preinit) $(+prector) \
483 $(filter-out $(addprefix $(csu-objpfx),start.o \
484 $(start-installed-name))\
485 $(+preinit) $(link-extra-libs) \
486 $(common-objpfx)libc% $(+postinit),$^) \
488 +link-after-libc = $(+postctor) $(+postinit)
490 $(CC) $(link-libc-rpath-link) $(+link-before-libc) $(rtld-LDFLAGS) \
491 $(link-extra-flags) $(link-libc) $(+link-after-libc)
492 $(call after-link,$@)
495 $(CC) $(+link-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \
497 $(call after-link,$@)
499 define +link-printers-tests
500 $(CC) $(+link-before-libc) $(built-rtld-LDFLAGS) $(link-libc-printers-tests) \
502 $(call after-link,$@)
504 endif # build-pie-default
506 +link = $(+link-static)
507 +link-tests = $(+link-static-tests)
508 +link-printers-tests = $(+link-static-tests)
512 # The pretty printer test programs need to be compiled without optimizations
513 # so they won't confuse gdb. We could use either the 'GCC optimize' pragma
514 # or the 'optimize' function attribute to achieve this; however, at least on
515 # ARM, gcc always produces different debugging symbols when invoked with
516 # a -O greater than 0 than when invoked with -O0, regardless of anything else
517 # we're using to suppress optimizations. Therefore, we need to explicitly pass
518 # -O0 to it through CFLAGS.
519 # Additionally, the build system will try to -include $(common-objpfx)/config.h
520 # when compiling the tests, which will throw an error if some special macros
521 # (such as __OPTIMIZE__ and IS_IN_build) aren't defined. To avoid this, we
522 # tell gcc to define IS_IN_build.
523 CFLAGS-printers-tests := -O0 -ggdb3 -DIS_IN_build
525 ifeq (yes,$(build-shared))
526 # These indicate whether to link using the built ld.so or the installed one.
527 installed-rtld-LDFLAGS = -Wl,-dynamic-linker=$(rtlddir)/$(rtld-installed-name)
528 built-rtld-LDFLAGS = -Wl,-dynamic-linker=$(elf-objpfx)ld.so
531 rtld-LDFLAGS = $(installed-rtld-LDFLAGS)
534 ifndef rtld-tests-LDFLAGS
535 ifeq (yes,$(build-hardcoded-path-in-tests))
536 rtld-tests-LDFLAGS = $(built-rtld-LDFLAGS)
538 rtld-tests-LDFLAGS = $(installed-rtld-LDFLAGS)
539 endif # build-hardcoded-path-in-tests
540 endif # rtld-tests-LDFLAGS
545 ifeq (yes,$(build-shared))
546 # We need the versioned name of libc.so in the deps of $(others) et al
547 # so that the symlink to libc.so is created before anything tries to
548 # run the linked programs.
549 link-libc-rpath = -Wl,-rpath=$(rpath-link)
550 link-libc-rpath-link = -Wl,-rpath-link=$(rpath-link)
552 # For programs which are not tests, $(link-libc-rpath-link) is added
553 # directly in $(+link), $(+link-pie) above, so that -Wl,-rpath-link
554 # comes before the expansion of LDLIBS-* and affects libraries added
555 # there. For shared objects, -Wl,-rpath-link is added via
556 # $(build-shlib-helper) and $(build-module-helper) in Makerules (also
557 # before the expansion of LDLIBS-* variables).
559 # Tests use -Wl,-rpath instead of -Wl,-rpath-link for
560 # build-hardcoded-path-in-tests.
561 ifeq (yes,$(build-hardcoded-path-in-tests))
562 link-libc-tests-rpath-link = $(link-libc-rpath)
564 link-libc-tests-rpath-link = $(link-libc-rpath-link)
565 endif # build-hardcoded-path-in-tests
567 link-libc-between-gnulib = $(common-objpfx)libc.so$(libc.so-version) \
568 $(common-objpfx)$(patsubst %,$(libtype.oS),c) \
569 -Wl,--as-needed $(elf-objpfx)ld.so \
571 link-libc = $(link-libc-between-gnulib) $(gnulib)
573 link-libc-tests-after-rpath-link = $(gnulib-tests) $(link-libc-between-gnulib) $(gnulib-tests)
574 link-libc-tests = $(link-libc-tests-rpath-link) \
575 $(link-libc-tests-after-rpath-link)
576 # Pretty printer test programs always require rpath instead of rpath-link.
577 link-libc-printers-tests = $(link-libc-rpath) \
578 $(link-libc-tests-after-rpath-link)
580 # This is how to find at build-time things that will be installed there.
581 rpath-dirs = math elf dlfcn nss nis rt resolv mathvec support
583 $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
585 link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib)
586 link-libc-tests = $(common-objpfx)libc.a $(otherlibs) $(gnulib-tests) $(common-objpfx)libc.a $(gnulib-tests)
590 # Differences in the linkers on the various platforms.
591 LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN'
592 LDFLAGS-soname-fname = -Wl,-soname,$(@F)
593 LDFLAGS-rdynamic = -rdynamic
594 LDFLAGS-Bsymbolic = -Bsymbolic
596 # Choose the default search path for the dynamic linker based on
597 # where we will install libraries.
598 ifneq ($(libdir),$(slibdir))
599 default-rpath = $(slibdir):$(libdir)
601 default-rpath = $(libdir)
604 ifndef link-extra-libs
605 link-extra-libs = $(LDLIBS-$(@F))
606 link-extra-libs-static = $(link-extra-libs)
609 # The static libraries.
610 link-libc-static = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib) -Wl,--end-group
611 link-libc-static-tests = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib-tests) -Wl,--end-group
613 # How to link against libgcc. Some libgcc functions, such as those
614 # for "long long" arithmetic or software floating point, can always be
615 # built without use of C library headers and do not have any global
616 # state so can safely be linked statically into any executable or
617 # shared library requiring them; these functions are in libgcc.a.
618 # Other functions, relating to exception handling, may require C
619 # library headers to build and it may not be safe to have more than
620 # one copy of them in a process; these functions are only in
621 # libgcc_s.so and libgcc_eh.a.
623 # To avoid circular dependencies when bootstrapping, it is desirable
624 # to avoid use of libgcc_s and libgcc_eh in building glibc. Where any
625 # glibc functionality (in particular, thread cancellation) requires
626 # exception handling, this is implemented through dlopen of libgcc_s
627 # to avoid unnecessary dependencies on libgcc_s by programs not using
628 # that functionality; executables built with glibc do not use
629 # exception handling other than through thread cancellation.
631 # Undefined references to functions from libgcc_eh or libgcc_s may
632 # arise for code built with -fexceptions. In the case of statically
633 # linked programs installed by glibc, unwinding will never actually
634 # occur at runtime and the use of elf/static-stubs.c to resolve these
635 # references is safe. In the case of statically linked test programs
636 # and test programs built with -fexceptions, unwinding may occur in
637 # some cases and it is preferable to link with libgcc_eh or libgcc_s
638 # so that the testing is as similar as possible to how programs will
639 # be built with the installed glibc.
641 # Some architectures have architecture-specific systems for exception
642 # handling that may involve undefined references to
643 # architecture-specific functions. On those architectures,
644 # gnulib-arch and static-gnulib-arch may be defined in sysdeps
645 # makefiles to use additional libraries for linking executables and
646 # shared libraries built by glibc.
648 ifneq ($(have-cc-with-libunwind),yes)
653 libgcc_eh := -Wl,--as-needed -lgcc_s $(libunwind) -Wl,--no-as-needed
655 gnulib = -lgcc $(gnulib-arch)
656 gnulib-tests := -lgcc $(libgcc_eh)
658 # By default, elf/static-stubs.o, instead of -lgcc_eh, is used to
659 # statically link programs. When --disable-shared is used, we use
660 # -lgcc_eh since elf/static-stubs.o isn't sufficient.
661 ifeq (yes,$(build-shared))
662 static-gnulib = -lgcc $(static-gnulib-arch)
664 static-gnulib = -lgcc -lgcc_eh $(static-gnulib-arch)
666 static-gnulib-tests := -lgcc -lgcc_eh $(libunwind)
667 libc.so-gnulib := -lgcc
669 +preinit = $(addprefix $(csu-objpfx),crti.o)
670 +postinit = $(addprefix $(csu-objpfx),crtn.o)
671 +prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbegin.o`
672 +postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
673 # Variants of the two previous definitions for linking PIE programs.
674 +prectorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginS.o`
675 +postctorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtendS.o`
676 # Variants of the two previous definitions for statically linking programs.
677 ifeq (yes,$(enable-static-pie))
678 # Static PIE must use PIE variants.
679 +prectorT = $(+prectorS)
680 +postctorT = $(+postctorS)
682 +prectorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginT.o`
683 +postctorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
685 csu-objpfx = $(common-objpfx)csu/
686 elf-objpfx = $(common-objpfx)elf/
688 # A command that, prepended to the name and arguments of a program,
689 # and run on the build system, causes that program with those
690 # arguments to be run on the host for which the library is built.
694 # Likewise, but the name of the program is preceded by
695 # <variable>=<value> assignments for environment variables.
696 ifndef test-wrapper-env
697 test-wrapper-env = $(test-wrapper) env
699 # Likewise, but the program's environment will be empty except for any
700 # explicit <variable>=<value> assignments preceding the program name.
701 ifndef test-wrapper-env-only
702 test-wrapper-env-only = $(test-wrapper) env -i
705 # Whether to run test programs built for the library's host system.
706 ifndef run-built-tests
707 ifeq (yes|,$(cross-compiling)|$(test-wrapper))
710 run-built-tests = yes
714 # Whether to stop immediately when a test fails. Nonempty means to
715 # stop, empty means not to stop.
716 ifndef stop-on-test-failure
717 stop-on-test-failure =
720 # How to run a program we just linked with our library.
721 # The program binary is assumed to be $(word 2,$^).
722 built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
723 rtld-prefix = $(elf-objpfx)$(rtld-installed-name) \
725 $(rpath-link)$(patsubst %,:%,$(sysdep-library-path))
726 ifeq (yes,$(build-shared))
728 sysdep-library-path = \
729 $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\
730 $(filter -Wl$(comma)-rpath-link=%,\
731 $(sysdep-LDFLAGS)))))
732 # $(run-via-rtld-prefix) is a command that, when prepended to the name
733 # of a program built with the newly built library, produces a command
734 # that, executed on the host for which the library is built, runs that
735 # program. For tests listed in tests-static or xtests-static, it is
737 run-via-rtld-prefix = \
738 $(if $(strip $(filter $(notdir $(built-program-file)), \
739 $(tests-static) $(xtests-static))),, $(rtld-prefix))
741 run-via-rtld-prefix =
743 # $(run-program-env) is the default environment variable settings to
744 # use when running a program built with the newly built library.
745 run-program-env = GCONV_PATH=$(common-objpfx)iconvdata \
746 LOCPATH=$(common-objpfx)localedata LC_ALL=C
747 # $(run-program-prefix) is a command that, when prepended to the name
748 # of a program built with the newly built library, produces a command
749 # that, executed on the build system on which "make" is run, runs that
750 # program. $(run-program-prefix-before-env) and
751 # $(run-program-prefix-after-env) are similar, but separate parts
752 # before and after a list of environment variables.
753 run-program-prefix-before-env = $(test-wrapper-env)
754 run-program-prefix-after-env = $(run-via-rtld-prefix)
755 run-program-prefix = $(run-program-prefix-before-env) $(run-program-env) \
756 $(run-program-prefix-after-env)
757 # $(built-program-cmd) is a command that, executed on the build system
758 # on which "make" is run, runs the newly built program that is the
759 # second dependency of the makefile target in which
760 # $(built-program-cmd) is used. $(built-program-cmd-before-env) and
761 # $(built-program-cmd-after-env) are similar, before and after a list
762 # of environment variables.
763 built-program-cmd-before-env = $(test-wrapper-env)
764 built-program-cmd-after-env = $(run-via-rtld-prefix) $(built-program-file)
765 built-program-cmd = $(built-program-cmd-before-env) $(run-program-env) \
766 $(built-program-cmd-after-env)
767 # $(host-built-program-cmd) is a command that, executed on the host
768 # for which the library is built, runs the newly built program that is
769 # the second dependency of the makefile target in which
770 # $(host-built-program-cmd) is used.
771 host-built-program-cmd = $(run-via-rtld-prefix) $(built-program-file)
777 # $(test-via-rtld-prefix) is a command that, when prepended to the name
778 # of a test program built with the newly built library, produces a command
779 # that, executed on the host for which the library is built, runs that
780 # program. For tests listed in tests-static or xtests-static as well
781 # as when test programs are hardcoded to the newly built libraries, it
784 # $(test-program-prefix) is a command that, when prepended to the name
785 # of a test program built with the newly built library, produces a command
786 # that, executed on the build system on which "make" is run, runs that
787 # test program. $(test-program-prefix-before-env) and
788 # $(test-program-prefix-after-env) are similar, before and after a
789 # list of environment variables.
791 # $(test-program-cmd) is a command that, executed on the build system
792 # on which "make" is run, runs the newly built test program that is the
793 # second dependency of the makefile target in which
794 # $(test-program-cmd) is used. $(test-program-cmd-before-env) and
795 # $(test-program-cmd-after-env) are similar, before and after a list
796 # of environment variables.
798 # $(host-test-program-cmd) is a command that, executed on the host
799 # for which the library is built, runs the newly built test program that
800 # is the second dependency of the makefile target in which
801 # $(host-test-program-cmd) is used.
803 ifeq (yes,$(build-hardcoded-path-in-tests))
804 test-via-rtld-prefix =
805 test-program-prefix-before-env = $(test-wrapper-env)
806 test-program-prefix-after-env =
807 test-program-prefix = $(test-program-prefix-before-env) $(run-program-env) \
808 $(test-program-prefix-after-env)
809 test-program-cmd-before-env = $(test-wrapper-env)
810 test-program-cmd-after-env = $(built-program-file)
811 test-program-cmd = $(test-program-cmd-before-env) $(run-program-env) \
812 $(test-program-cmd-after-env)
813 host-test-program-cmd = $(built-program-file)
815 test-via-rtld-prefix = $(run-via-rtld-prefix)
816 test-program-prefix-before-env = $(run-program-prefix-before-env)
817 test-program-prefix-after-env = $(run-program-prefix-after-env)
818 test-program-prefix = $(run-program-prefix)
819 test-program-cmd-before-env = $(built-program-cmd-before-env)
820 test-program-cmd-after-env = $(built-program-cmd-after-env)
821 test-program-cmd = $(built-program-cmd)
822 host-test-program-cmd = $(host-built-program-cmd)
825 # Extra flags to pass to GCC.
826 ifeq ($(all-warnings),yes)
827 +gccwarn := -Wall -Wwrite-strings -Wcast-qual -Wbad-function-cast -Wmissing-noreturn -Wmissing-prototypes -Wmissing-declarations -Wcomment -Wcomments -Wtrigraphs -Wsign-compare -Wfloat-equal -Wmultichar
829 +gccwarn := -Wall -Wwrite-strings
832 ifeq ($(enable-werror),yes)
835 +gccwarn-c = -Wstrict-prototypes -Wold-style-definition
837 # We do not depend on the address of constants in different files to be
838 # actually different, so allow the compiler to merge them all.
839 +merge-constants = -fmerge-all-constants
841 # We have to assume that glibc functions are called in any rounding
842 # mode and also change the rounding mode in a few functions. So,
843 # disable any optimization that assume default rounding mode.
844 +math-flags = -frounding-math
846 # Logically only "libnldbl", "nonlib" and "testsuite" should be using
847 # -fno-math-errno. However due to GCC bug #88576, only "libm" can use
849 +extra-math-flags = $(if $(filter libm,$(in-module)),-fno-math-errno,-fmath-errno)
851 # We might want to compile with some stack-protection flag.
852 ifneq ($(stack-protector),)
853 +stack-protector=$(stack-protector)
856 # This is the program that generates makefile dependencies from C source files.
857 # The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy
858 # targets for headers so that removed headers don't break the build.
860 +mkdep = $(CC) -M -MP
863 # The program that makes Emacs-style TAGS files.
866 # The `xgettext' program for producing .pot files from sources.
871 # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
872 # perhaps others) to preprocess assembly code in some cases.
875 # To force installation of files even if they are older than the
876 # installed files. This variable is included in the dependency list
877 # of all installation targets.
878 ifeq ($(force-install),yes)
879 +force = force-install
885 #### End of configuration variables.
888 # This tells some versions of GNU make before 3.63 not to export all variables.
891 # We want to echo the commands we're running without
892 # umpteen zillion filenames along with it (we use `...' instead)
893 # but we don't want this echoing done when the user has said
894 # he doesn't want to see commands echoed by using -s.
895 ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s
896 +cmdecho := echo >/dev/null
901 # These are the flags given to the compiler to tell
902 # it what sort of optimization and/or debugging output to do.
904 # If `CFLAGS' was defined, use that.
906 +cflags := $(filter-out -I%,$(CFLAGS))
910 # If none of the above worked, default to "-g -O".
911 ifeq "$(strip $(+cflags))" ""
912 +cflags := $(default_cflags)
913 endif # $(+cflags) == ""
915 +cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants) $(+math-flags) \
919 # Each sysdeps directory can contain header files that both will be
920 # used to compile and will be installed. Each can also contain an
921 # include/ subdirectory, whose header files will be used to compile
922 # but will not be installed, and will take precedence over the
923 # installed files. This mirrors the top-level include/ subdirectory.
924 +sysdep-includes := $(foreach dir,$(+sysdep_dirs),\
925 $(addprefix -I,$(wildcard $(dir)/include) $(dir)))
927 # These are flags given to the C compiler to tell it to look for
928 # include files (including ones given in angle brackets) in the parent
929 # library source directory, in the include directory, and in the
931 +includes = -I$(..)include $(if $(subdir),$(objpfx:%/=-I%)) \
932 $(+sysdep-includes) $(includes) \
933 $(patsubst %/,-I%,$(..)) $(libio-include) -I. $(sysincludes)
935 # Since libio has several internal header files, we use a -I instead
936 # of many little headers in the include directory.
937 libio-include = -I$(..)libio
939 # List of non-library modules that we build.
940 built-modules = iconvprogs iconvdata ldconfig lddlibc4 libmemusage \
941 libSegFault libpcprofile librpcsvc locale-programs \
942 memusagestat nonlib nscd extramodules libnldbl libsupport \
945 in-module = $(subst -,_,$(firstword $(libof-$(basename $(@F))) \
950 # Build ld.so, libc.so and libpthread.so with -ftls-model=initial-exec
951 tls-model = $(if $(filter libpthread rtld \
952 libc,$(in-module)),-ftls-model=initial-exec,)
954 module-cppflags-real = -include $(common-objpfx)libc-modules.h \
955 -DMODULE_NAME=$(in-module)
957 # We don't need libc-modules.h and the MODULE_NAME definition for .v.i
958 # files. These targets don't (and will likely never need to) use the IS_IN
959 # facility. In fact, shlib-versions should not use it because that will
960 # create a circular dependency as libc-modules.h is generated from
962 module-cppflags = $(if $(filter %.v.i,$(@F)),,$(module-cppflags-real))
964 # These are the variables that the implicit compilation rules use.
965 # Note that we can't use -std=* in CPPFLAGS, because it overrides
966 # the implicit -lang-asm and breaks cpp behavior for .S files--notably
967 # it causes cpp to stop predefining __ASSEMBLER__.
968 CPPFLAGS = $(config-extra-cppflags) $(CPPUNDEFS) $(CPPFLAGS-config) \
969 $($(subdir)-CPPFLAGS) \
970 $(+includes) $(defines) $(module-cppflags) \
971 -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
972 $(CPPFLAGS-$(suffix $@)) \
973 $(foreach lib,$(libof-$(basename $(@F))) \
974 $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \
975 $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F)))
977 ifneq (no,$(have-tunables))
978 CPPFLAGS += -DTOP_NAMESPACE=glibc
981 override CFLAGS = -std=gnu11 -fgnu89-inline $(config-extra-cflags) \
982 $(filter-out %frame-pointer,$(+cflags)) $(+gccwarn-c) \
983 $(+extra-math-flags) \
984 $(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) \
985 $(CFLAGS-$(@F)) $(tls-model) \
986 $(foreach lib,$(libof-$(basename $(@F))) \
987 $(libof-$(<F)) $(libof-$(@F)),$(CFLAGS-$(lib)))
988 # Use our copies of cstdlib and cmath.
989 override CXXFLAGS = -I$(common-objpfx) $(c++-sysincludes) \
990 $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \
991 $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F))
993 # If everything is compiled with -fPIC (implicitly) we must tell this by
994 # defining the PIC symbol.
995 ifeq (yes,$(build-pic-default))
999 # Enable object files for different versions of the library.
1000 # Various things use $(object-suffixes) to know what all to make.
1001 # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
1002 # to pass different flags for each flavor.
1003 libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o))
1004 # .op may be added to all-object-suffixes below.
1005 all-object-suffixes := .o .os .oS
1007 CPPFLAGS-.o = $(pic-default)
1008 # libc.a must be compiled with -fPIE/-fpie for static PIE.
1009 CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) $(pie-default)
1011 object-suffixes += .o
1012 ifeq (yes,$(build-shared))
1013 # Under --enable-shared, we will build a shared library of PIC objects.
1014 # The PIC object files are named foo.os.
1015 object-suffixes += .os
1016 CPPFLAGS-.os = -DPIC -DSHARED
1017 CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag)
1018 libtype.os := lib%_pic.a
1019 # This can be changed by a sysdep makefile
1021 # This one should always stay like this unless there is a very good reason.
1024 # This can be changed by a sysdep makefile
1026 # This one should always stay like this unless there is a very good reason.
1028 ifeq (yes,$(build-profile))
1029 # Under --enable-profile, we will build a static library of profiled objects.
1030 # The profiled object files are named foo.op.
1031 all-object-suffixes += .op
1032 object-suffixes += .op
1033 CPPFLAGS-.op = -DPROF $(pic-default)
1034 # libc_p.a must be compiled with -fPIE/-fpie for static PIE.
1035 CFLAGS-.op = -pg $(pie-default)
1036 libtype.op = lib%_p.a
1039 # Convenience variable for when we want to treat shared-library cases
1040 # differently from the rest.
1041 object-suffixes-noshared := $(filter-out .os,$(object-suffixes))
1043 object-suffixes-for-libc := $(object-suffixes)
1045 ifeq (yes,$(build-shared))
1046 # Build special library that contains the static-only routines for libc.
1047 object-suffixes-for-libc += .oS
1049 # Must build the routines as PIC, though, because they can end up in (users')
1050 # shared objects. We don't want to use CFLAGS-os because users may, for
1051 # example, make that processor-specific.
1052 CFLAGS-.oS = $(CFLAGS-.o) $(PIC-ccflag) $(extra-nonshared-cflags)
1053 CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC -DLIBC_NONSHARED=1
1054 libtype.oS = lib%_nonshared.a
1057 # The assembler can generate debug information too.
1059 ASFLAGS := $(filter -g% -fdebug-prefix-map=%,$(CFLAGS))
1061 override ASFLAGS += -Werror=undef $(ASFLAGS-config) $(asflags-cpu)
1067 move-if-change = $(SHELL) $(..)scripts/move-if-change
1069 -include $(common-objpfx)sysd-sorted
1070 subdirs = $(sorted-subdirs)
1071 subdir-srcdirs = $(foreach dir,$(subdirs),\
1072 $(firstword $($(dir)-srcdir) $(..)$(dir)))
1074 # This is a pair of implicit rules to preprocess a file with # comments,
1075 # %ifdef et al, based on config.h settings or other %include'd files.
1076 # We use chained rules instead of a pipeline here so that we can properly
1077 # check the exit status of cpp rather than using its bad output when there
1078 # is a preprocessing error. Another rule should depend on the output file
1079 # `FOO.v', and along with that `FOO.v.i' should be given dependencies
1080 # listing both its input files, and any header files that it may reference
1081 # (but no commands).
1082 %.v.i: $(common-objpfx)config.h $(..)Makeconfig
1083 sed '/^[ ]*%/!s/#.*$$//;/^[ ]*$$/d;s/^[ ]*%/#/' \
1084 $(filter-out FORCE %.h $(..)Makeconfig,$^) \
1085 | $(CC) -E -undef $(CPPFLAGS) -x assembler-with-cpp - \
1089 sed '/^[ ]*#/d;/^[ ]*$$/d' $< > $@T
1092 ifeq (yes, $(build-shared))
1094 # To generate a header to support more than one ABI for different
1095 # architecture variants, the CPU/Makefile defines abi-variants to be a
1096 # list of names for those variants (e.g. 32 64), and, for each variant,
1097 # defines abi-$(variant)-condition to be the condition for those options
1098 # to use in a C #if condition. abi-includes may be defined to a list of
1099 # headers to include in the generated header, if the default does not
1100 # suffice. default-abi is defined to be the ABI for the current glibc
1104 abi-includes := bits/wordsize.h
1107 # Process the shlib-versions file, which tells us what shared library
1108 # version numbers to use when we install shared objects on this system.
1109 # We need to wait until $(subdirs) is complete.
1110 ifeq ($(sysd-sorted-done),t)
1111 -include $(common-objpfx)soversions.mk
1112 ifndef avoid-generated
1113 $(common-objpfx)shlib-versions.v.i: \
1114 $(wildcard $(+sysdep_dirs:=/shlib-versions) \
1115 $(subdir-srcdirs:=/shlib-versions)) \
1118 $(common-objpfx)soversions.i: $(..)scripts/soversions.awk \
1119 $(common-objpfx)shlib-versions.v
1122 $(common-objpfx)soversions.mk: $(common-objpfx)soversions.i $(..)Makeconfig
1123 (while read which lib number setname; do \
1124 eval seen_$$which=1; \
1125 test x"$$which" = xDEFAULT || continue; \
1127 [0-9]*) echo "$$lib.so-version=.$$number"; \
1128 echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\
1129 *) echo "$$lib.so-version=$$number"; \
1130 echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\
1133 echo soversions.mk-done = t;) < $< > $@T; exit 0
1138 postclean-generated += soversions.mk soversions.i \
1139 shlib-versions.v shlib-versions.v.i
1141 before-compile += $(common-objpfx)libc-modules.h
1142 common-generated += libc-modules.h libc-modules.stmp
1143 ifeq ($(soversions.mk-done),t)
1144 # Generate a header with macro definitions for use with the IS_IN macro.
1145 # These are the possible values for the MODULE_NAME macro defined when building
1146 # sources, to identify which module the translation unit is going to be built
1148 $(common-objpfx)libc-modules.h: $(common-objpfx)libc-modules.stmp; @:
1149 $(common-objpfx)libc-modules.stmp: $(..)scripts/gen-libc-modules.awk \
1150 $(common-objpfx)soversions.i
1151 $(AWK) -v buildlist="$(subst -,_,$(built-modules))" -f $^ > ${@:stmp=T}
1152 $(move-if-change) ${@:stmp=T} ${@:stmp=h}
1157 # Build the tunables list header early since it could be used by any module in
1159 ifneq (no,$(have-tunables))
1160 before-compile += $(common-objpfx)dl-tunable-list.h
1161 common-generated += dl-tunable-list.h dl-tunable-list.stmp
1163 $(common-objpfx)dl-tunable-list.h: $(common-objpfx)dl-tunable-list.stmp; @:
1164 $(common-objpfx)dl-tunable-list.stmp: \
1165 $(..)scripts/gen-tunables.awk \
1166 $(..)elf/dl-tunables.list \
1167 $(wildcard $(subdirs:%=$(..)%/dl-tunables.list)) \
1168 $(wildcard $(sysdirs:%=%/dl-tunables.list))
1169 $(AWK) -f $^ > ${@:stmp=T}
1170 $(move-if-change) ${@:stmp=T} ${@:stmp=h}
1174 # Generate version maps, but wait until sysdep-subdirs is known
1175 ifeq ($(sysd-sorted-done),t)
1176 ifeq ($(build-shared),yes)
1177 -include $(common-objpfx)sysd-versions
1178 -include $(common-objpfx)Versions.mk
1179 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
1180 common-generated += $(version-maps)
1181 postclean-generated += sysd-versions Versions.all abi-versions.h \
1182 Versions.def Versions.v.i Versions.v Versions.mk
1184 ifndef avoid-generated
1185 ifneq ($(sysd-versions-subdirs),$(sorted-subdirs) $(config-sysdirs))
1186 sysd-versions-force = FORCE
1190 $(common-objpfx)Versions.def: $(..)scripts/versionlist.awk \
1191 $(common-objpfx)Versions.v
1192 LC_ALL=C $(AWK) -f $^ > $@T
1195 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
1196 $(common-objpfx)soversions.i \
1197 $(common-objpfx)Versions.def
1198 { while read which lib version setname; do \
1199 test x"$$which" = xDEFAULT || continue; \
1200 test -z "$$setname" || echo "$$lib : $$setname"; \
1201 done < $(word 2,$^); \
1203 } | LC_ALL=C $(AWK) -f $< > $@T
1205 $(common-objpfx)Versions.mk: $(..)scripts/haveversions.awk \
1206 $(common-objpfx)Versions.all
1209 # See %.v/%.v.i implicit rules in Makeconfig.
1210 $(common-objpfx)Versions.v.i: $(wildcard $(subdirs:%=$(..)%/Versions)) \
1211 $(wildcard $(sysdirs:%=%/Versions)) \
1212 $(sysd-versions-force)
1213 $(common-objpfx)sysd-versions: $(common-objpfx)versions.stmp
1214 $(common-objpfx)versions.stmp: $(common-objpfx)Versions.all \
1215 $(common-objpfx)Versions.v \
1216 $(..)scripts/versions.awk
1217 ( echo 'sysd-versions-subdirs = $(subdirs) $(config-sysdirs)' ; \
1219 | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
1220 -v move_if_change='$(move-if-change)' \
1222 ) > $(common-objpfx)sysd-versionsT
1223 mv -f $(common-objpfx)sysd-versionsT $(common-objpfx)sysd-versions
1225 endif # avoid-generated
1226 endif # $(build-shared) = yes
1227 endif # sysd-sorted-done
1229 # The name under which the run-time dynamic linker is installed.
1230 # We are currently going for the convention that `/lib/ld.so.1'
1231 # names the SVR4/ELF ABI-compliant dynamic linker.
1232 ifndef rtld-installed-name
1234 rtld-installed-name = $(ld.so-version)
1236 rtld-installed-name = ld.so.1
1240 ifndef rtld-version-installed-name
1241 rtld-version-installed-name = ld-$(version).so
1244 endif # build-shared
1247 ifeq ($(build-shared),yes)
1248 libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
1250 libdl = $(common-objpfx)dlfcn/libdl.a
1253 ifeq ($(build-shared),yes)
1254 libm = $(common-objpfx)math/libm.so$(libm.so-version)
1255 libmvec = $(common-objpfx)mathvec/libmvec.so$(libmvec.so-version)
1257 libm = $(common-objpfx)math/libm.a
1258 libmvec = $(common-objpfx)mathvec/libmvec.a
1261 ifeq ($(build-shared),yes)
1262 libsupport = $(common-objpfx)support/libsupport_nonshared.a
1264 libsupport = $(common-objpfx)support/libsupport.a
1267 # This is a partial list of subdirectories containing the library source.
1268 # The order is more or less arbitrary. The sorting step will take care of the
1269 # dependencies and generate sorted-subdirs dynamically.
1270 all-subdirs = csu assert ctype locale intl catgets math setjmp signal \
1271 stdlib stdio-common libio malloc string wcsmbs time dirent \
1272 grp pwd posix io termios resource misc socket sysvipc gmon \
1273 gnulib iconv iconvdata wctype manual shadow gshadow po argp \
1274 localedata timezone rt conform debug mathvec support \
1277 ifeq ($(build-crypt),yes)
1278 all-subdirs += crypt
1282 ifndef avoid-generated
1283 # sysd-sorted itself will contain rules making the sysd-sorted target
1284 # depend on Depend files. But if you just added a Depend file to an
1285 # existing directory not in all-subdirs, then sysd-sorted needs to
1286 # be regenerated, so it depends on existing $(sorted-subdirs:=/Depend) files.
1287 all-Depend-files := $(wildcard $(sort \
1288 $(foreach dir,$(all-subdirs),\
1289 $(firstword $($(dir)-srcdir) \
1290 $(..)$(dir))/Depend) \
1291 $(sorted-subdirs:=/Depend)))
1292 $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk \
1293 $(common-objpfx)config.make $(..)Makeconfig \
1294 $(wildcard $(sysdirs:=/Subdirs)) \
1297 -v subdirs='$(all-subdirs)' \
1299 $(filter %/Subdirs %/Depend,$^) > $@-tmp
1301 $(all-Depend-files): ;
1304 # This gives partial TARGET:SOURCE pattern pairs to have rules
1305 # emitted into sysd-rules. A sysdeps Makeconfig fragment can
1306 # add its own special object file prefix to this list with e.g. foo-%:%
1307 # to have foo-*.? compiled from *.? using $(foo-CPPFLAGS).
1308 sysd-rules-patterns := %:% rtld-%:rtld-% rtld-%:% m_%:s_%
1310 # Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here.
1311 sysdep-makeconfigs := $(wildcard $(+sysdep_dirs:=/Makeconfig))
1312 ifneq (,$(sysdep-makeconfigs))
1313 include $(sysdep-makeconfigs)
1316 # Compute just the target patterns. Makeconfig has set sysd-rules-patterns.
1317 sysd-rules-targets := $(sort $(foreach p,$(sysd-rules-patterns),\
1318 $(firstword $(subst :, ,$p))))
1320 # A sysdeps Makeconfig fragment may set libc-reentrant to yes.
1321 ifeq (yes,$(libc-reentrant))
1322 defines += -D_LIBC_REENTRANT
1324 libio-mtsafe = -D_IO_MTSAFE_IO
1327 # The name to give to a test in test results summaries.
1328 test-name = $(strip $(patsubst %.out, %, $(patsubst $(common-objpfx)%, %, $@)))
1330 # Likewise, in XFAIL variable names.
1331 test-xfail-name = $(strip $(patsubst %.out, %, $(patsubst $(objpfx)%, %, $@)))
1333 # Command to output a test status line (such as PASS: test-name). If
1334 # test-xfail-$(test-xfail-name) has a nonempty value, the status will be
1335 # XPASS or XFAIL rather than PASS or FAIL.
1336 evaluate-test = $(..)scripts/evaluate-test.sh $(test-name) $$? \
1337 $(if $(test-xfail-$(test-xfail-name)),true,false) \
1338 $(if $(stop-on-test-failure),true,false) \
1339 > $(common-objpfx)$(test-name).test-result
1341 endif # Makeconfig not yet included