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Always do locking when iterating over list of streams (bug 15142)
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bfff8b1b 1# Copyright (C) 1991-2017 Free Software Foundation, Inc.
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2# This file is part of the GNU C Library.
3
4# The GNU C Library is free software; you can redistribute it and/or
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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.
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8
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
41bdb6e2 12# Lesser General Public License for more details.
28f540f4 13
41bdb6e2 14# You should have received a copy of the GNU Lesser General Public
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15# License along with the GNU C Library; if not, see
16# <http://www.gnu.org/licenses/>.
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17
18#
19# Makefile configuration options for the GNU C library.
20#
21ifneq (,)
22This makefile requires GNU Make.
23endif
24
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25all: # Make this the default goal
26
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27ifneq "$(origin +included-Makeconfig)" "file"
28
29+included-Makeconfig := yes
30
31ifdef subdir
32.. := ../
33endif
34
094bacdb 35# $(common-objdir) is the place to put objects and
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36# such that are not specific to a single subdir.
37ifdef objdir
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38objpfx := $(patsubst %//,%/,$(objdir)/$(subdir)/)
39common-objpfx = $(objdir)/
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40common-objdir = $(objdir)
41else
728e272a 42objdir must be defined by the build-directory Makefile.
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43endif
44
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45# Root of the sysdeps tree.
46sysdep_dir := $(..)sysdeps
47export sysdep_dir := $(sysdep_dir)
48
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49# Get the values defined by options to `configure'.
50include $(common-objpfx)config.make
51
e07bb02a 52# What flags to give to sources which call user provided callbacks
56ab3869 53uses-callbacks = -fexceptions
e07bb02a 54
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55# What flags to give to tests which test stack alignment
56stack-align-test-flags =
57
57ba7bb4 58# Complete path to sysdep dirs.
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59# `configure' writes a definition of `config-sysdirs' in `config.make'.
60sysdirs := $(foreach D,$(config-sysdirs),$(firstword $(filter /%,$D) $(..)$D))
61
62# Add-ons that contribute sysdeps trees get added to the include list
63# after sysdeps/generic. This makes #include <sysdeps/...> work right
64# to find specific add-on files without assuming the add-on directory name.
65# It also means that headers can go into an add-on's base directory
66# instead of the add-on needing a sysdeps/generic of its own.
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67sysdeps-srcdirs := $(foreach add-on,$(sysdeps-add-ons),\
68 $(firstword $(filter /%,$(add-on)) \
69 $(..)$(add-on)))
70+sysdep_dirs = $(sysdirs) $(sysdeps-srcdirs)
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71ifdef objdir
72+sysdep_dirs := $(objdir) $(+sysdep_dirs)
73endif
57ba7bb4 74
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75# Run config.status to update config.make and config.h. We don't show the
76# dependence of config.h to Make, because it is only touched when it
77# changes and so config.status would be run every time; the dependence of
78# config.make should suffice to force regeneration and re-exec, and the new
79# image will notice if config.h changed.
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80$(common-objpfx)config.make: $(common-objpfx)config.status \
81 $(..)config.make.in $(..)config.h.in
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82 cd $(<D); $(SHELL) $(<F)
83
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84# Find all the add-on and sysdeps configure fragments, to make sure we
85# re-run configure when any of them changes.
5290baf0 86$(common-objpfx)config.status: $(..)version.h $(..)configure \
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87 $(foreach dir,$(sysdirs),\
88 $(wildcard $(dir)/Implies) \
95afbbe5 89 $(patsubst %.ac,%,\
f332db02 90 $(firstword $(wildcard \
cb8a6dbd 91 $(addprefix $(dir)/,configure configure.ac))))) \
95afbbe5 92 $(patsubst %.ac,%,\
cb8a6dbd 93 $(wildcard $(..)sysdeps/*/preconfigure $(..)sysdeps/*/preconfigure.ac)) \
95afbbe5 94 $(patsubst %.ac,%,\
e0a3ed4f 95 $(foreach add-on,$(add-ons),\
8f73811b 96 $(firstword $(wildcard \
e0a3ed4f 97 $(addprefix $(firstword $(filter /%,$(add-on)) $(..)$(add-on))/,\
cb8a6dbd 98 configure configure.ac))) \
222d7f00 99 $(wildcard $(addprefix $(firstword $(filter /%,$(add-on)) $(..)$(add-on))/,\
cb8a6dbd 100 sysdeps/*/preconfigure sysdeps/*/preconfigure.ac))))
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101 @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
102 echo The GNU C library has not been configured. >&2; \
103 echo Run \`configure\' to configure it before building. >&2; \
104 echo Try \`configure --help\' for more details. >&2; \
105 exit 1; fi
28f540f4 106
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107# We don't want CPPFLAGS to be exported to the command running configure.
108unexport CPPFLAGS
109
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110# Get the user's configuration parameters.
111ifneq ($(wildcard $(..)configparms),)
112include $(..)configparms
113endif
114ifneq ($(objpfx),)
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115ifneq ($(wildcard $(common-objpfx)configparms),)
116include $(common-objpfx)configparms
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117endif
118endif
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119\f
120####
121#### These are the configuration variables. You can define values for
122#### the variables below in the file `configparms'.
123#### Do NOT edit this file.
124####
125
126
127# Common prefix for machine-independent installation directories.
487253ea 128ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value.
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129prefix = /usr/local
130endif
131
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132# Decide whether we shall build the programs or not. We always do this
133# unless the user tells us (in configparms) or we are building for a
134# standalone target.
135ifndef build-programs
136ifneq ($(config-os),none)
137build-programs=yes
138else
139build-programs=no
140endif
141endif
142
28f540f4 143# Common prefix for machine-dependent installation directories.
487253ea 144ifeq ($(origin exec_prefix),undefined)
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145exec_prefix = $(prefix)
146endif
147
148# Where to install the library and object files.
149ifndef libdir
150libdir = $(exec_prefix)/lib
151endif
8d57beea 152inst_libdir = $(install_root)$(libdir)
28f540f4 153
aaa8cb4b 154# Where to install the shared library.
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155ifndef slibdir
156slibdir = $(exec_prefix)/lib
157endif
8d57beea 158inst_slibdir = $(install_root)$(slibdir)
094bacdb 159
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160# Where to install the dynamic linker.
161ifndef rtlddir
162rtlddir = $(slibdir)
163endif
164inst_rtlddir = $(install_root)$(rtlddir)
165
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166# Prefix to put on files installed in $(libdir). For libraries `libNAME.a',
167# the prefix is spliced between `lib' and the name, so the linker switch
168# `-l$(libprefix)NAME' finds the library; for other files the prefix is
169# just prepended to the whole file name.
487253ea 170ifeq ($(origin libprefix),undefined)
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171libprefix =
172endif
173
174# Where to install the header files.
175ifndef includedir
25c751d0 176includedir = $(prefix)/include
28f540f4 177endif
8d57beea 178inst_includedir = $(install_root)$(includedir)
28f540f4 179
28f540f4 180# Where to install machine-independent data files.
a2fe9c76 181# These are the timezone database, and the locale database.
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182ifndef datadir
183datadir = $(prefix)/share
184endif
8d57beea 185inst_datadir = $(install_root)$(datadir)
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186
187# Where to install the timezone data files (which are machine-independent).
188ifndef zonedir
189zonedir = $(datadir)/zoneinfo
190endif
8d57beea 191inst_zonedir = $(install_root)$(zonedir)
28f540f4 192
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193# Where to install the compiled binary locale archive and compiled
194# binary locale files.
195ifndef complocaledir
196complocaledir = $(libdir)/locale
a2fe9c76 197endif
90fe682d 198inst_complocaledir = $(install_root)$(complocaledir)
a2fe9c76 199
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200# Where to install the message catalog data files (which are
201# machine-independent).
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202ifndef localedir
203localedir = $(datadir)/locale
4a33c2f5 204endif
314f6dee 205inst_localedir = $(install_root)$(localedir)
4a33c2f5 206
3ec41e03 207# Where to install the locale charmap source files.
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208ifndef i18ndir
209i18ndir = $(datadir)/i18n
a2fe9c76 210endif
8d57beea 211inst_i18ndir = $(install_root)$(i18ndir)
a2fe9c76 212
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213# Where to install the shared object for charset transformation.
214ifndef gconvdir
215gconvdir = $(libdir)/gconv
216endif
217inst_gconvdir = $(install_root)$(gconvdir)
218
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219# Where to install programs.
220ifndef bindir
221bindir = $(exec_prefix)/bin
222endif
8d57beea 223inst_bindir = $(install_root)$(bindir)
28f540f4 224
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225# Where to install internal programs.
226ifndef libexecdir
227libexecdir = $(exec_prefix)/libexec
228endif
229inst_libexecdir = $(install_root)$(libexecdir)
230
28f540f4 231# Where to install administrative programs.
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232ifndef rootsbindir
233rootsbindir = $(exec_prefix)/sbin
234endif
8d57beea 235inst_rootsbindir = $(install_root)$(rootsbindir)
1ef32c3d 236
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237ifndef sbindir
238sbindir = $(exec_prefix)/sbin
239endif
8d57beea 240inst_sbindir = $(install_root)$(sbindir)
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241
242# Where to install the Info files.
243ifndef infodir
244infodir = $(prefix)/info
245endif
8d57beea 246inst_infodir = $(install_root)$(infodir)
28f540f4 247
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248# Where to install audit libraries.
249ifndef auditdir
250auditdir = $(libdir)/audit
251endif
252inst_auditdir = $(install_root)$(auditdir)
253
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254# Where to install default configuration files. These include the local
255# timezone specification and network data base files.
256ifndef sysconfdir
257sysconfdir = $(prefix)/etc
258endif
8d57beea 259inst_sysconfdir = $(install_root)$(sysconfdir)
28f540f4 260
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261# Directory for the database files and Makefile for nss_db.
262ifndef vardbdir
4248b1b1 263vardbdir = $(localstatedir)/db
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264endif
265inst_vardbdir = $(install_root)$(vardbdir)
266
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267# Where to install the "localtime" timezone file; this is the file whose
268# contents $(localtime) specifies. If this is a relative pathname, it is
269# relative to $(zonedir). It is a good idea to put this somewhere
270# other than there, so the zoneinfo directory contains only universal data,
271# localizing the configuration data elsewhere.
272ifndef localtime-file
0d8733c4 273localtime-file = $(sysconfdir)/localtime
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274endif
275
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276# What to use for leap second specifications in compiling the default
277# timezone files. Set this to `/dev/null' for no leap second handling as
278# 1003.1 requires, or to `leapseconds' for proper leap second handling.
279# Both zone flavors are always available as `posix/ZONE' and `right/ZONE'.
280# This variable determines the default: if it's `/dev/null',
281# ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE.
282ifndef leapseconds
283leapseconds = /dev/null
284endif
285
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286# What timezone's DST rules should be used when a POSIX-style TZ
287# environment variable doesn't specify any rules. For 1003.1 compliance
288# this timezone must use rules that are as U.S. federal law defines DST.
289# Run `make -C time echo-zonenames' to see a list of available zone names.
290# This setting can be changed with `zic -p TIMEZONE' at any time.
291# If you want POSIX.1 compatibility, use `America/New_York'.
292ifndef posixrules
293posixrules = America/New_York
294endif
295
296# Where to install the "posixrules" timezone file; this is file
297# whose contents $(posixrules) specifies. If this is a relative
298# pathname, it is relative to $(zonedir).
299ifndef posixrules-file
300posixrules-file = posixrules
301endif
302
303
304# Directory where your system's native header files live.
305# This is used on Unix systems to generate some GNU libc header files.
306ifndef sysincludedir
307sysincludedir = /usr/include
308endif
309
310
311# Commands to install files.
312ifndef INSTALL_DATA
313INSTALL_DATA = $(INSTALL) -m 644
314endif
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315ifndef INSTALL_SCRIPT
316INSTALL_SCRIPT = $(INSTALL)
317endif
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318ifndef INSTALL_PROGRAM
319INSTALL_PROGRAM = $(INSTALL)
320endif
321ifndef INSTALL
322INSTALL = install
323endif
324
325
326# The name of the C compiler.
327# If you've got GCC, and it works, use it.
328ifeq ($(origin CC),default)
329CC := gcc
330endif
331
332# The name of the C compiler to use for compilations of programs to run on
333# the host that is building the library. If you set CC to a
334# cross-compiler, you must set this to the normal compiler.
335ifndef BUILD_CC
336BUILD_CC = $(CC)
337endif
338
339# Default flags to pass the C compiler.
340ifndef default_cflags
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341ifeq ($(release),stable)
342default_cflags := -g -O2
343else
a8922de8 344default_cflags := -g -O
28f540f4 345endif
1d5c2feb 346endif
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347
348# Flags to pass the C compiler when assembling preprocessed assembly code
e4f5eae8 349# (`.S' files).
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350ifndef asm-CPPFLAGS
351asm-CPPFLAGS =
352endif
353
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354as-needed := -Wl,--as-needed
355no-as-needed := -Wl,--no-as-needed
7e2b0c85 356
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357# Must be supported by the linker.
358no-whole-archive = -Wl,--no-whole-archive
359whole-archive = -Wl,--whole-archive
360
779ae82e 361# Installed name of the startup code.
26ecc33a 362# The ELF convention is that the startfile is called crt1.o
779ae82e 363start-installed-name = crt1.o
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364# On systems that do not need a special startfile for statically linked
365# binaries, simply set it to the normal name.
366ifndef static-start-installed-name
367static-start-installed-name = $(start-installed-name)
368endif
779ae82e 369
0269750c 370ifeq (yesyes,$(build-shared)$(have-z-combreloc))
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371combreloc-LDFLAGS = -Wl,-z,combreloc
372LDFLAGS.so += $(combreloc-LDFLAGS)
373LDFLAGS-rtld += $(combreloc-LDFLAGS)
374endif
375
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376relro-LDFLAGS = -Wl,-z,relro
377LDFLAGS.so += $(relro-LDFLAGS)
378LDFLAGS-rtld += $(relro-LDFLAGS)
1c563add 379
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380ifeq (yes,$(have-hash-style))
381# For the time being we unconditionally use 'both'. At some time we
382# should declare statically linked code as 'out of luck' and compile
383# with --hash-style=gnu only.
384hashstyle-LDFLAGS = -Wl,--hash-style=both
385LDFLAGS.so += $(hashstyle-LDFLAGS)
386LDFLAGS-rtld += $(hashstyle-LDFLAGS)
387endif
388
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389# If lazy relocations are disabled, add the -z now flag. Use
390# LDFLAGS-lib.so instead of LDFLAGS.so, to avoid adding the flag to
391# test modules.
392ifeq ($(bind-now),yes)
393LDFLAGS-lib.so += -Wl,-z,now
394endif
395
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396# Command to run after every final link (executable or shared object).
397# This is invoked with $(call after-link,...), so it should operate on
398# the file $1. This can be set to do some sort of post-processing on
399# binaries, or to perform some sort of static sanity check.
400ifndef after-link
401after-link =
402endif
403
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404# Additional libraries to link into every test.
405link-extra-libs-tests = $(libsupport)
406
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407# Command for linking PIE programs with the C library.
408ifndef +link-pie
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409+link-pie-before-libc = $(CC) -pie -Wl,-O1 -nostdlib -nostartfiles -o $@ \
410 $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
435aa54b 411 $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
34d6a3cb 412 $(firstword $(CRT-$(@F)) $(csu-objpfx)S$(start-installed-name)) \
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413 $(+preinit) $(+prectorS) \
414 $(filter-out $(addprefix $(csu-objpfx),start.o \
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415 S$(start-installed-name))\
416 $(+preinit) $(link-extra-libs) \
417 $(common-objpfx)libc% $(+postinit),$^) \
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418 $(link-extra-libs)
419+link-pie-after-libc = $(+postctorS) $(+postinit)
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420define +link-pie
421$(+link-pie-before-libc) $(rtld-LDFLAGS) $(link-libc) $(+link-pie-after-libc)
422$(call after-link,$@)
423endef
424define +link-pie-tests
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425$(+link-pie-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \
426 $(+link-pie-after-libc)
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427$(call after-link,$@)
428endef
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429define +link-pie-printers-tests
430$(+link-pie-before-libc) $(built-rtld-LDFLAGS) $(link-libc-printers-tests) \
431 $(+link-pie-after-libc)
432$(call after-link,$@)
433endef
435aa54b 434endif
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435# Command for statically linking programs with the C library.
436ifndef +link-static
95f5a9a8 437+link-static-before-libc = $(CC) -nostdlib -nostartfiles -static -o $@ \
a67029ff 438 $(DEFAULT-LDFLAGS-$(@F)) \
9f0d7b6d 439 $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
af09bfb5 440 $(addprefix $(csu-objpfx),$(static-start-installed-name)) \
a5055ad1 441 $(+preinit) $(+prectorT) \
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442 $(filter-out $(addprefix $(csu-objpfx),start.o \
443 $(start-installed-name))\
444 $(+preinit) $(link-extra-libs-static) \
445 $(common-objpfx)libc% $(+postinit),$^) \
d173d12e 446 $(link-extra-libs-static)
a5055ad1 447+link-static-after-libc = $(+postctorT) $(+postinit)
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448define +link-static
449$(+link-static-before-libc) $(link-libc-static) $(+link-static-after-libc)
450$(call after-link,$@)
451endef
452define +link-static-tests
76dcbf42 453$(+link-static-before-libc) $(link-libc-static-tests) $(+link-static-after-libc)
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454$(call after-link,$@)
455endef
e1586792 456endif
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457# Commands for linking programs with the C library.
458ifndef +link
459ifeq (yes,$(build-shared))
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460ifeq (yes,$(build-pie-default))
461no-pie-ldflag = -no-pie
462+link = $(+link-pie)
463+link-tests = $(+link-pie-tests)
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464+link-printers-tests = $(+link-pie-printers-tests)
465else # not build-pie-default
94b32c39 466+link-before-libc = $(CC) -nostdlib -nostartfiles -o $@ \
740b3dbe 467 $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
94b32c39 468 $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
6014c65d 469 $(firstword $(CRT-$(@F)) $(csu-objpfx)$(start-installed-name)) \
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470 $(+preinit) $(+prector) \
471 $(filter-out $(addprefix $(csu-objpfx),start.o \
472 $(start-installed-name))\
473 $(+preinit) $(link-extra-libs) \
474 $(common-objpfx)libc% $(+postinit),$^) \
475 $(link-extra-libs)
476+link-after-libc = $(+postctor) $(+postinit)
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477define +link
478$(+link-before-libc) $(rtld-LDFLAGS) $(link-libc) $(+link-after-libc)
479$(call after-link,$@)
480endef
481define +link-tests
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482$(+link-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \
483 $(+link-after-libc)
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484$(call after-link,$@)
485endef
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486define +link-printers-tests
487$(+link-before-libc) $(built-rtld-LDFLAGS) $(link-libc-printers-tests) \
488 $(+link-after-libc)
489$(call after-link,$@)
490endef
491endif # build-pie-default
492else # build-static
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493+link = $(+link-static)
494+link-tests = $(+link-static-tests)
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495+link-printers-tests = $(+link-static-tests)
496endif # build-shared
497endif # +link
498
499# The pretty printer test programs need to be compiled without optimizations
500# so they won't confuse gdb. We could use either the 'GCC optimize' pragma
501# or the 'optimize' function attribute to achieve this; however, at least on
502# ARM, gcc always produces different debugging symbols when invoked with
503# a -O greater than 0 than when invoked with -O0, regardless of anything else
504# we're using to suppress optimizations. Therefore, we need to explicitly pass
505# -O0 to it through CFLAGS.
506# Additionally, the build system will try to -include $(common-objpfx)/config.h
507# when compiling the tests, which will throw an error if some special macros
508# (such as __OPTIMIZE__ and IS_IN_build) aren't defined. To avoid this, we
509# tell gcc to define IS_IN_build.
510CFLAGS-printers-tests := -O0 -ggdb3 -DIS_IN_build
511
0269750c 512ifeq (yes,$(build-shared))
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513# These indicate whether to link using the built ld.so or the installed one.
514installed-rtld-LDFLAGS = -Wl,-dynamic-linker=$(rtlddir)/$(rtld-installed-name)
515built-rtld-LDFLAGS = -Wl,-dynamic-linker=$(elf-objpfx)ld.so
516
740b3dbe 517ifndef rtld-LDFLAGS
23b5cae1 518rtld-LDFLAGS = $(installed-rtld-LDFLAGS)
740b3dbe 519endif
23b5cae1 520
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521ifndef rtld-tests-LDFLAGS
522ifeq (yes,$(build-hardcoded-path-in-tests))
23b5cae1 523rtld-tests-LDFLAGS = $(built-rtld-LDFLAGS)
740b3dbe 524else
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525rtld-tests-LDFLAGS = $(installed-rtld-LDFLAGS)
526endif # build-hardcoded-path-in-tests
527endif # rtld-tests-LDFLAGS
528
529endif # build-shared
530
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531ifndef link-libc
532ifeq (yes,$(build-shared))
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533# We need the versioned name of libc.so in the deps of $(others) et al
534# so that the symlink to libc.so is created before anything tries to
535# run the linked programs.
23b5cae1 536link-libc-rpath = -Wl,-rpath=$(rpath-link)
740b3dbe 537link-libc-rpath-link = -Wl,-rpath-link=$(rpath-link)
23b5cae1 538
740b3dbe 539ifeq (yes,$(build-hardcoded-path-in-tests))
23b5cae1 540link-libc-tests-rpath-link = $(link-libc-rpath)
740b3dbe
L
541else
542link-libc-tests-rpath-link = $(link-libc-rpath-link)
23b5cae1
MG
543endif # build-hardcoded-path-in-tests
544
740b3dbe
L
545link-libc-before-gnulib = $(common-objpfx)libc.so$(libc.so-version) \
546 $(common-objpfx)$(patsubst %,$(libtype.oS),c) \
4134b50d 547 $(as-needed) $(elf-objpfx)ld.so \
740b3dbe
L
548 $(no-as-needed)
549link-libc = $(link-libc-rpath-link) $(link-libc-before-gnulib) $(gnulib)
23b5cae1
MG
550
551link-libc-tests-after-rpath-link = $(link-libc-before-gnulib) $(gnulib-tests)
740b3dbe 552link-libc-tests = $(link-libc-tests-rpath-link) \
23b5cae1
MG
553 $(link-libc-tests-after-rpath-link)
554# Pretty printer test programs always require rpath instead of rpath-link.
555link-libc-printers-tests = $(link-libc-rpath) \
556 $(link-libc-tests-after-rpath-link)
557
4d6acc61 558# This is how to find at build-time things that will be installed there.
c23de0aa 559rpath-dirs = math elf dlfcn nss nis rt resolv crypt mathvec support
e72bfd87
UD
560rpath-link = \
561$(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
23b5cae1 562else # build-static
4ac5087b 563link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib)
95f5a9a8 564link-libc-tests = $(common-objpfx)libc.a $(otherlibs) $(gnulib-tests) $(common-objpfx)libc.a $(gnulib-tests)
23b5cae1
MG
565endif # build-shared
566endif # link-libc
900bec85 567
ad10cac8 568# Differences in the linkers on the various platforms.
ad10cac8
UD
569LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN'
570LDFLAGS-soname-fname = -Wl,-soname,$(@F)
571LDFLAGS-rdynamic = -rdynamic
572LDFLAGS-Bsymbolic = -Bsymbolic
ad10cac8 573
f01010de
UD
574# Choose the default search path for the dynamic linker based on
575# where we will install libraries.
576ifneq ($(libdir),$(slibdir))
577default-rpath = $(slibdir):$(libdir)
578else
579default-rpath = $(libdir)
580endif
581
57ba7bb4 582ifndef link-extra-libs
1d038b6b
RM
583link-extra-libs = $(LDLIBS-$(@F))
584link-extra-libs-static = $(link-extra-libs)
57ba7bb4 585endif
e1586792
UD
586
587# The static libraries.
b9af1301 588link-libc-static = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib) -Wl,--end-group
95f5a9a8 589link-libc-static-tests = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib-tests) -Wl,--end-group
e1586792 590
95f5a9a8
JM
591# How to link against libgcc. Some libgcc functions, such as those
592# for "long long" arithmetic or software floating point, can always be
593# built without use of C library headers and do not have any global
594# state so can safely be linked statically into any executable or
595# shared library requiring them; these functions are in libgcc.a.
596# Other functions, relating to exception handling, may require C
597# library headers to build and it may not be safe to have more than
598# one copy of them in a process; these functions are only in
599# libgcc_s.so and libgcc_eh.a.
600#
601# To avoid circular dependencies when bootstrapping, it is desirable
602# to avoid use of libgcc_s and libgcc_eh in building glibc. Where any
603# glibc functionality (in particular, thread cancellation) requires
604# exception handling, this is implemented through dlopen of libgcc_s
605# to avoid unnecessary dependencies on libgcc_s by programs not using
606# that functionality; executables built with glibc do not use
607# exception handling other than through thread cancellation.
608#
609# Undefined references to functions from libgcc_eh or libgcc_s may
610# arise for code built with -fexceptions. In the case of statically
611# linked programs installed by glibc, unwinding will never actually
612# occur at runtime and the use of elf/static-stubs.c to resolve these
613# references is safe. In the case of statically linked test programs
614# and test programs built with -fexceptions, unwinding may occur in
615# some cases and it is preferable to link with libgcc_eh or libgcc_s
616# so that the testing is as similar as possible to how programs will
617# be built with the installed glibc.
618#
619# Some architectures have architecture-specific systems for exception
620# handling that may involve undefined references to
621# architecture-specific functions. On those architectures,
622# gnulib-arch and static-gnulib-arch may be defined in sysdeps
623# makefiles to use additional libraries for linking executables and
624# shared libraries built by glibc.
28f540f4 625ifndef gnulib
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UD
626ifneq ($(have-cc-with-libunwind),yes)
627 libunwind =
feca5e0b 628else
cbdb12de 629 libunwind = -lunwind
feca5e0b 630endif
a3cc4f48 631libgcc_eh := -Wl,--as-needed -lgcc_s $(libunwind) -Wl,--no-as-needed
95f5a9a8
JM
632gnulib-arch =
633gnulib = -lgcc $(gnulib-arch)
634gnulib-tests := -lgcc $(libgcc_eh)
635static-gnulib-arch =
94b32c39
L
636# By default, elf/static-stubs.o, instead of -lgcc_eh, is used to
637# statically link programs. When --disable-shared is used, we use
638# -lgcc_eh since elf/static-stubs.o isn't sufficient.
639ifeq (yes,$(build-shared))
95f5a9a8 640static-gnulib = -lgcc $(static-gnulib-arch)
94b32c39
L
641else
642static-gnulib = -lgcc -lgcc_eh $(static-gnulib-arch)
643endif
95f5a9a8 644static-gnulib-tests := -lgcc -lgcc_eh $(libunwind)
cbdb12de 645libc.so-gnulib := -lgcc
28f540f4 646endif
e75154a6
RM
647+preinit = $(addprefix $(csu-objpfx),crti.o)
648+postinit = $(addprefix $(csu-objpfx),crtn.o)
35e65999
RA
649+prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbegin.o`
650+postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
435aa54b 651# Variants of the two previous definitions for linking PIE programs.
35e65999
RA
652+prectorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginS.o`
653+postctorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtendS.o`
a5055ad1
L
654# Variants of the two previous definitions for statically linking programs.
655+prectorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginT.o`
189e935b 656+postctorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
6e953631
UD
657csu-objpfx = $(common-objpfx)csu/
658elf-objpfx = $(common-objpfx)elf/
28f540f4 659
cc1290d0
JM
660# A command that, prepended to the name and arguments of a program,
661# and run on the build system, causes that program with those
662# arguments to be run on the host for which the library is built.
663ifndef test-wrapper
664test-wrapper =
665endif
666# Likewise, but the name of the program is preceded by
667# <variable>=<value> assignments for environment variables.
668ifndef test-wrapper-env
669test-wrapper-env = $(test-wrapper) env
670endif
9162c01d
RM
671# Likewise, but the program's environment will be empty except for any
672# explicit <variable>=<value> assignments preceding the program name.
673ifndef test-wrapper-env-only
674test-wrapper-env-only = $(test-wrapper) env -i
675endif
cc1290d0 676
03ac099f
JM
677# Whether to run test programs built for the library's host system.
678ifndef run-built-tests
cc1290d0 679ifeq (yes|,$(cross-compiling)|$(test-wrapper))
03ac099f
JM
680run-built-tests = no
681else
682run-built-tests = yes
683endif
684endif
685
d6fe5e58
JM
686# Whether to stop immediately when a test fails. Nonempty means to
687# stop, empty means not to stop.
688ifndef stop-on-test-failure
689stop-on-test-failure =
690endif
691
03a75825
RM
692# How to run a program we just linked with our library.
693# The program binary is assumed to be $(word 2,$^).
694built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
01dc6df9
SP
695rtld-prefix = $(elf-objpfx)$(rtld-installed-name) \
696 --library-path \
697 $(rpath-link)$(patsubst %,:%,$(sysdep-library-path))
0269750c 698ifeq (yes,$(build-shared))
196980f5 699comma = ,
11336c16
UD
700sysdep-library-path = \
701$(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\
702 $(filter -Wl$(comma)-rpath-link=%,\
703 $(sysdep-LDFLAGS)))))
88866099
JM
704# $(run-via-rtld-prefix) is a command that, when prepended to the name
705# of a program built with the newly built library, produces a command
706# that, executed on the host for which the library is built, runs that
daaa7713
JM
707# program. For tests listed in tests-static or xtests-static, it is
708# empty.
88866099
JM
709run-via-rtld-prefix = \
710 $(if $(strip $(filter $(notdir $(built-program-file)), \
01dc6df9 711 $(tests-static) $(xtests-static))),, $(rtld-prefix))
8658ceda 712else
88866099
JM
713run-via-rtld-prefix =
714endif
8540f6d2
JM
715# $(run-program-env) is the default environment variable settings to
716# use when running a program built with the newly built library.
717run-program-env = GCONV_PATH=$(common-objpfx)iconvdata \
718 LOCPATH=$(common-objpfx)localedata LC_ALL=C
25fe8932 719# $(run-program-prefix) is a command that, when prepended to the name
88866099
JM
720# of a program built with the newly built library, produces a command
721# that, executed on the build system on which "make" is run, runs that
8540f6d2
JM
722# program. $(run-program-prefix-before-env) and
723# $(run-program-prefix-after-env) are similar, but separate parts
724# before and after a list of environment variables.
725run-program-prefix-before-env = $(test-wrapper-env)
726run-program-prefix-after-env = $(run-via-rtld-prefix)
727run-program-prefix = $(run-program-prefix-before-env) $(run-program-env) \
728 $(run-program-prefix-after-env)
88866099
JM
729# $(built-program-cmd) is a command that, executed on the build system
730# on which "make" is run, runs the newly built program that is the
731# second dependency of the makefile target in which
8540f6d2
JM
732# $(built-program-cmd) is used. $(built-program-cmd-before-env) and
733# $(built-program-cmd-after-env) are similar, before and after a list
734# of environment variables.
735built-program-cmd-before-env = $(test-wrapper-env)
736built-program-cmd-after-env = $(run-via-rtld-prefix) $(built-program-file)
737built-program-cmd = $(built-program-cmd-before-env) $(run-program-env) \
738 $(built-program-cmd-after-env)
166bca24
JB
739# $(host-built-program-cmd) is a command that, executed on the host
740# for which the library is built, runs the newly built program that is
741# the second dependency of the makefile target in which
742# $(host-built-program-cmd) is used.
743host-built-program-cmd = $(run-via-rtld-prefix) $(built-program-file)
03a75825 744
28f540f4
RM
745ifndef LD
746LD := ld -X
747endif
748
740b3dbe
L
749# $(test-via-rtld-prefix) is a command that, when prepended to the name
750# of a test program built with the newly built library, produces a command
751# that, executed on the host for which the library is built, runs that
daaa7713
JM
752# program. For tests listed in tests-static or xtests-static as well
753# as when test programs are hardcoded to the newly built libraries, it
754# is empty.
740b3dbe
L
755
756# $(test-program-prefix) is a command that, when prepended to the name
757# of a test program built with the newly built library, produces a command
758# that, executed on the build system on which "make" is run, runs that
8540f6d2
JM
759# test program. $(test-program-prefix-before-env) and
760# $(test-program-prefix-after-env) are similar, before and after a
761# list of environment variables.
740b3dbe
L
762
763# $(test-program-cmd) is a command that, executed on the build system
764# on which "make" is run, runs the newly built test program that is the
765# second dependency of the makefile target in which
8540f6d2
JM
766# $(test-program-cmd) is used. $(test-program-cmd-before-env) and
767# $(test-program-cmd-after-env) are similar, before and after a list
768# of environment variables.
740b3dbe
L
769
770# $(host-test-program-cmd) is a command that, executed on the host
771# for which the library is built, runs the newly built test program that
772# is the second dependency of the makefile target in which
773# $(host-test-program-cmd) is used.
774
775ifeq (yes,$(build-hardcoded-path-in-tests))
776test-via-rtld-prefix =
8540f6d2
JM
777test-program-prefix-before-env = $(test-wrapper-env)
778test-program-prefix-after-env =
779test-program-prefix = $(test-program-prefix-before-env) $(run-program-env) \
780 $(test-program-prefix-after-env)
781test-program-cmd-before-env = $(test-wrapper-env)
782test-program-cmd-after-env = $(built-program-file)
783test-program-cmd = $(test-program-cmd-before-env) $(run-program-env) \
784 $(test-program-cmd-after-env)
740b3dbe
L
785host-test-program-cmd = $(built-program-file)
786else
787test-via-rtld-prefix = $(run-via-rtld-prefix)
8540f6d2
JM
788test-program-prefix-before-env = $(run-program-prefix-before-env)
789test-program-prefix-after-env = $(run-program-prefix-after-env)
740b3dbe 790test-program-prefix = $(run-program-prefix)
8540f6d2
JM
791test-program-cmd-before-env = $(built-program-cmd-before-env)
792test-program-cmd-after-env = $(built-program-cmd-after-env)
740b3dbe
L
793test-program-cmd = $(built-program-cmd)
794host-test-program-cmd = $(host-built-program-cmd)
795endif
796
28f540f4 797# Extra flags to pass to GCC.
6cc7d725 798ifeq ($(all-warnings),yes)
ed159672 799+gccwarn := -Wall -Wwrite-strings -Wcast-qual -Wbad-function-cast -Wmissing-noreturn -Wmissing-prototypes -Wmissing-declarations -Wcomment -Wcomments -Wtrigraphs -Wsign-compare -Wfloat-equal -Wmultichar
6cc7d725 800else
ed159672 801+gccwarn := -Wall -Wwrite-strings
6cc7d725 802endif
498a2233 803+gccwarn += -Wundef
a4ecc9eb 804ifeq ($(enable-werror),yes)
48bb14bd 805+gccwarn += -Werror
a4ecc9eb 806endif
8e2f7c68 807+gccwarn-c = -Wstrict-prototypes -Wold-style-definition
28f540f4 808
dec36b4f
UD
809# We do not depend on the address of constants in different files to be
810# actually different, so allow the compiler to merge them all.
811+merge-constants = -fmerge-all-constants
812
29ba805c
AJ
813# We have to assume that glibc functions are called in any rounding
814# mode and also change the rounding mode in a few functions. So,
815# disable any optimization that assume default rounding mode.
816+math-flags = -frounding-math
817
cecbc796
NA
818# We might want to compile with some stack-protection flag.
819ifneq ($(stack-protector),)
820+stack-protector=$(stack-protector)
821endif
822
30077d51
RM
823# This is the program that generates makefile dependencies from C source files.
824# The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy
825# targets for headers so that removed headers don't break the build.
28f540f4 826ifndef +mkdep
30077d51 827+mkdep = $(CC) -M -MP
28f540f4
RM
828endif
829
830# The program that makes Emacs-style TAGS files.
78759725 831ETAGS := etags
28f540f4 832
9de06f3c
RM
833# The `xgettext' program for producing .pot files from sources.
834ifndef XGETTEXT
835XGETTEXT = xgettext
836endif
837
28f540f4
RM
838# The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
839# perhaps others) to preprocess assembly code in some cases.
840M4 = m4
841
73237de3
UD
842# To force installation of files even if they are older than the
843# installed files. This variable is included in the dependency list
844# of all installation targets.
845ifeq ($(force-install),yes)
846+force = force-install
847else
848+force =
849endif
850
28f540f4
RM
851####
852#### End of configuration variables.
853####
854\f
855# This tells some versions of GNU make before 3.63 not to export all variables.
856.NOEXPORT:
857
858# We want to echo the commands we're running without
6d52618b 859# umpteen zillion filenames along with it (we use `...' instead)
28f540f4
RM
860# but we don't want this echoing done when the user has said
861# he doesn't want to see commands echoed by using -s.
862ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s
863+cmdecho := echo >/dev/null
864else # not -s
865+cmdecho := echo
866endif # -s
867
868# These are the flags given to the compiler to tell
869# it what sort of optimization and/or debugging output to do.
870ifndef +cflags
871# If `CFLAGS' was defined, use that.
872ifdef CFLAGS
873+cflags := $(filter-out -I%,$(CFLAGS))
874endif # CFLAGS
875endif # +cflags
876
fd26970f 877# If none of the above worked, default to "-g -O".
28f540f4
RM
878ifeq "$(strip $(+cflags))" ""
879+cflags := $(default_cflags)
880endif # $(+cflags) == ""
881
cecbc796
NA
882+cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants) $(+math-flags) \
883 $(+stack-protector)
28f540f4 884+gcc-nowarn := -w
28f540f4
RM
885
886# Don't duplicate options if we inherited variables from the parent.
887+cflags := $(sort $(+cflags))
888
b84660a8
RM
889# Each sysdeps directory can contain header files that both will be
890# used to compile and will be installed. Each can also contain an
891# include/ subdirectory, whose header files will be used to compile
892# but will not be installed, and will take precedence over the
893# installed files. This mirrors the top-level include/ subdirectory.
894+sysdep-includes := $(foreach dir,$(+sysdep_dirs),\
895 $(addprefix -I,$(wildcard $(dir)/include) $(dir)))
896
b6ab06ce
UD
897# These are flags given to the C compiler to tell it to look for
898# include files (including ones given in angle brackets) in the parent
899# library source directory, in the include directory, and in the
900# current directory.
e0a3ed4f 901+includes = -I$(..)include $(if $(subdir),$(objpfx:%/=-I%)) \
4ae73ca0
RM
902 $(+sysdep-includes) $(includes) \
903 $(patsubst %/,-I%,$(..)) $(libio-include) -I. $(sysincludes)
28f540f4 904
96aa2d94 905# Since libio has several internal header files, we use a -I instead
762a2918 906# of many little headers in the include directory.
96aa2d94 907libio-include = -I$(..)libio
28f540f4 908
130ac68c
SP
909# List of non-library modules that we build.
910built-modules = iconvprogs iconvdata ldconfig lddlibc4 libmemusage \
911 libSegFault libpcprofile librpcsvc locale-programs \
7c3018f9
ZW
912 memusagestat nonlib nscd extramodules libnldbl libsupport \
913 testsuite
130ac68c 914
9cd47470
SP
915in-module = $(subst -,_,$(firstword $(libof-$(basename $(@F))) \
916 $(libof-$(<F)) \
917 $(libof-$(@F)) \
918 libc))
919
e400f3cc
SP
920# Build ld.so, libc.so and libpthread.so with -ftls-model=initial-exec
921tls-model = $(if $(filter libpthread rtld \
922 libc,$(in-module)),-ftls-model=initial-exec,)
923
130ac68c 924module-cppflags-real = -include $(common-objpfx)libc-modules.h \
279bc5b3 925 -DMODULE_NAME=$(in-module)
130ac68c 926
8a257e2c
RM
927# We don't need libc-modules.h and the MODULE_NAME definition for .v.i
928# files. These targets don't (and will likely never need to) use the IS_IN
929# facility. In fact, shlib-versions should not use it because that will
930# create a circular dependency as libc-modules.h is generated from
931# shlib-versions.
932module-cppflags = $(if $(filter %.v.i,$(@F)),,$(module-cppflags-real))
130ac68c 933
28f540f4 934# These are the variables that the implicit compilation rules use.
ce460d04
RM
935# Note that we can't use -std=* in CPPFLAGS, because it overrides
936# the implicit -lang-asm and breaks cpp behavior for .S files--notably
937# it causes cpp to stop predefining __ASSEMBLER__.
7ffa9423
AZ
938CPPFLAGS = $(config-extra-cppflags) $(CPPUNDEFS) $(CPPFLAGS-config) \
939 $($(subdir)-CPPFLAGS) \
130ac68c 940 $(+includes) $(defines) $(module-cppflags) \
ae8b36f7 941 -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
130ac68c 942 $(CPPFLAGS-$(suffix $@)) \
d29724f8 943 $(foreach lib,$(libof-$(basename $(@F))) \
bc96fbda 944 $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \
0a951d0e 945 $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F)))
67e58f39 946
6765d5d3 947ifneq (no,$(have-tunables))
67e58f39
SP
948CPPFLAGS += -DTOP_NAMESPACE=glibc
949endif
950
783dd2d3 951override CFLAGS = -std=gnu11 -fgnu89-inline $(config-extra-cflags) \
7735afa2
UD
952 $(filter-out %frame-pointer,$(+cflags)) $(+gccwarn-c) \
953 $(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) \
e400f3cc 954 $(CFLAGS-$(@F)) $(tls-model) \
44f0a71e
UD
955 $(foreach lib,$(libof-$(basename $(@F))) \
956 $(libof-$(<F)) $(libof-$(@F)),$(CFLAGS-$(lib)))
83212868
L
957# Use our copies of cstdlib and cmath.
958override CXXFLAGS = -I$(common-objpfx) $(c++-sysincludes) \
ef226fec 959 $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \
7735afa2 960 $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F))
28f540f4 961
cc3fa755
UD
962# If everything is compiled with -fPIC (implicitly) we must tell this by
963# defining the PIC symbol.
964ifeq (yes,$(build-pic-default))
965pic-default = -DPIC
966endif
967
f0bf9cb9
RM
968# Enable object files for different versions of the library.
969# Various things use $(object-suffixes) to know what all to make.
970# The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
971# to pass different flags for each flavor.
91641c65 972libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o))
612148c6
FW
973# .op may be added to all-object-suffixes below.
974all-object-suffixes := .o .os .oS
650425ce 975object-suffixes :=
cc3fa755 976CPPFLAGS-.o = $(pic-default)
14e9dd67 977CFLAGS-.o = $(filter %frame-pointer,$(+cflags))
f0bf9cb9 978libtype.o := lib%.a
650425ce 979object-suffixes += .o
f0bf9cb9
RM
980ifeq (yes,$(build-shared))
981# Under --enable-shared, we will build a shared library of PIC objects.
40a55d20
UD
982# The PIC object files are named foo.os.
983object-suffixes += .os
b5567b2a 984CPPFLAGS-.os = -DPIC -DSHARED
14e9dd67 985CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag)
40a55d20 986libtype.os := lib%_pic.a
26b4d766
UD
987# This can be changed by a sysdep makefile
988pic-ccflag = -fPIC
231e88a4
UD
989# This one should always stay like this unless there is a very good reason.
990PIC-ccflag = -fPIC
f0bf9cb9 991endif
7b91359b
UD
992# This can be changed by a sysdep makefile
993pie-ccflag = -fpie
994# This one should always stay like this unless there is a very good reason.
995PIE-ccflag = -fPIE
f0bf9cb9
RM
996ifeq (yes,$(build-profile))
997# Under --enable-profile, we will build a static library of profiled objects.
40a55d20 998# The profiled object files are named foo.op.
612148c6 999all-object-suffixes += .op
40a55d20 1000object-suffixes += .op
cc3fa755 1001CPPFLAGS-.op = -DPROF $(pic-default)
40a55d20
UD
1002CFLAGS-.op = -pg
1003libtype.op = lib%_p.a
f0bf9cb9 1004endif
ab95290c 1005
c1487492
RM
1006# Convenience variable for when we want to treat shared-library cases
1007# differently from the rest.
1008object-suffixes-noshared := $(filter-out .os,$(object-suffixes))
1009
9afc8a59
UD
1010object-suffixes-for-libc := $(object-suffixes)
1011
1012ifeq (yes,$(build-shared))
1013# Build special library that contains the static-only routines for libc.
1014object-suffixes-for-libc += .oS
1015
1016# Must build the routines as PIC, though, because they can end up in (users')
1017# shared objects. We don't want to use CFLAGS-os because users may, for
1018# example, make that processor-specific.
231e88a4 1019CFLAGS-.oS = $(CFLAGS-.o) $(PIC-ccflag)
06b31ad3 1020CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC -DLIBC_NONSHARED=1
9afc8a59
UD
1021libtype.oS = lib%_nonshared.a
1022endif
1023
073e82bf
RM
1024# The assembler can generate debug information too.
1025ifndef ASFLAGS
2e7c805d 1026ASFLAGS := $(filter -g% -fdebug-prefix-map=%,$(CFLAGS))
073e82bf 1027endif
96a15749 1028ASFLAGS += -Werror=undef $(ASFLAGS-config) $(asflags-cpu)
9afc8a59 1029
96bda0ea
RM
1030ifndef BUILD_CC
1031BUILD_CC = $(CC)
1032endif
e72bfd87
UD
1033
1034move-if-change = $(SHELL) $(..)scripts/move-if-change
a641835a 1035\f
281e6031
UD
1036-include $(common-objpfx)sysd-sorted
1037subdirs = $(sorted-subdirs)
e0a3ed4f
RM
1038subdir-srcdirs = $(foreach dir,$(subdirs),\
1039 $(firstword $($(dir)-srcdir) $(..)$(dir)))
9a0a462c 1040
f3787738
RM
1041# This is a pair of implicit rules to preprocess a file with # comments,
1042# %ifdef et al, based on config.h settings or other %include'd files.
1043# We use chained rules instead of a pipeline here so that we can properly
1044# check the exit status of cpp rather than using its bad output when there
1045# is a preprocessing error. Another rule should depend on the output file
1046# `FOO.v', and along with that `FOO.v.i' should be given dependencies
1047# listing both its input files, and any header files that it may reference
1048# (but no commands).
8744841f
RM
1049%.v.i: $(common-objpfx)config.h $(..)Makeconfig
1050 sed '/^[ ]*%/!s/#.*$$//;/^[ ]*$$/d;s/^[ ]*%/#/' \
90f42071 1051 $(filter-out FORCE %.h $(..)Makeconfig,$^) \
02838201 1052 | $(CC) -E -undef $(CPPFLAGS) -x assembler-with-cpp - \
f3787738
RM
1053 > $@T
1054 mv -f $@T $@
1055%.v: %.v.i
1056 sed '/^[ ]*#/d;/^[ ]*$$/d' $< > $@T
1057 mv -f $@T $@
480d827b 1058
7e80ddb8
RM
1059ifeq (yes, $(build-shared))
1060
0ab0291b
L
1061# To generate a header to support more than one ABI for different
1062# architecture variants, the CPU/Makefile defines abi-variants to be a
1063# list of names for those variants (e.g. 32 64), and, for each variant,
1064# defines abi-$(variant)-condition to be the condition for those options
1065# to use in a C #if condition. abi-includes may be defined to a list of
1066# headers to include in the generated header, if the default does not
88a4576f
JM
1067# suffice. default-abi is defined to be the ABI for the current glibc
1068# build.
0ab0291b
L
1069
1070ifndef abi-includes
1071abi-includes := bits/wordsize.h
1072endif
1073
4de1d597
RM
1074# Process the shlib-versions file, which tells us what shared library
1075# version numbers to use when we install shared objects on this system.
281e6031
UD
1076# We need to wait until $(subdirs) is complete.
1077ifeq ($(sysd-sorted-done),t)
4de1d597 1078-include $(common-objpfx)soversions.mk
eca3eb3b 1079ifndef avoid-generated
9632aaee
RM
1080# This lets add-ons give more-specific matches that override defaults
1081# in the top-level file.
f3787738 1082$(common-objpfx)shlib-versions.v.i: \
e0a3ed4f
RM
1083 $(wildcard $(+sysdep_dirs:=/shlib-versions) \
1084 $(subdir-srcdirs:=/shlib-versions)) \
9632aaee 1085 $(..)shlib-versions
6d864d15 1086
6d864d15
RM
1087$(common-objpfx)soversions.i: $(..)scripts/soversions.awk \
1088 $(common-objpfx)shlib-versions.v
af296fcd 1089 $(AWK) -f $^ > $@T
ba7e89ec 1090 mv -f $@T $@
3e1e123d 1091$(common-objpfx)soversions.mk: $(common-objpfx)soversions.i $(..)Makeconfig
0ab0291b 1092 (while read which lib number setname; do \
3e1e123d 1093 eval seen_$$which=1; \
91adb529 1094 test x"$$which" = xDEFAULT || continue; \
1bc777b8
UD
1095 case $$number in \
1096 [0-9]*) echo "$$lib.so-version=.$$number"; \
1097 echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\
93ae1eba 1098 *) echo "$$lib.so-version=$$number"; \
1bc777b8
UD
1099 echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\
1100 esac; \
1101 done; \
1102 echo soversions.mk-done = t;) < $< > $@T; exit 0
4de1d597 1103 mv -f $@T $@
eca3eb3b 1104endif
281e6031 1105endif
eca3eb3b 1106
f3787738
RM
1107postclean-generated += soversions.mk soversions.i \
1108 shlib-versions.v shlib-versions.v.i
4de1d597 1109
130ac68c 1110before-compile += $(common-objpfx)libc-modules.h
65b6d8b7 1111common-generated += libc-modules.h libc-modules.stmp
130ac68c
SP
1112ifeq ($(soversions.mk-done),t)
1113# Generate a header with macro definitions for use with the IS_IN macro.
279bc5b3 1114# These are the possible values for the MODULE_NAME macro defined when building
130ac68c
SP
1115# sources, to identify which module the translation unit is going to be built
1116# into.
1117$(common-objpfx)libc-modules.h: $(common-objpfx)libc-modules.stmp; @:
1118$(common-objpfx)libc-modules.stmp: $(..)scripts/gen-libc-modules.awk \
1119 $(common-objpfx)soversions.i
1120 $(AWK) -v buildlist="$(subst -,_,$(built-modules))" -f $^ > ${@:stmp=T}
1121 $(move-if-change) ${@:stmp=T} ${@:stmp=h}
1122 touch $@
1123
1124endif
1125
67e58f39
SP
1126# Build the tunables list header early since it could be used by any module in
1127# glibc.
6765d5d3 1128ifneq (no,$(have-tunables))
67e58f39 1129before-compile += $(common-objpfx)dl-tunable-list.h
65b6d8b7
ZW
1130common-generated += dl-tunable-list.h dl-tunable-list.stmp
1131
1132$(common-objpfx)dl-tunable-list.h: $(common-objpfx)dl-tunable-list.stmp; @:
1133$(common-objpfx)dl-tunable-list.stmp: \
1134 $(..)scripts/gen-tunables.awk \
1135 $(..)elf/dl-tunables.list \
1136 $(wildcard $(subdirs:%=$(..)%/dl-tunables.list)) \
1137 $(wildcard $(sysdirs:%=%/dl-tunables.list))
1138 $(AWK) -f $^ > ${@:stmp=T}
1139 $(move-if-change) ${@:stmp=T} ${@:stmp=h}
1140 touch $@
67e58f39
SP
1141endif
1142
d41c6f61
UD
1143# The name under which the run-time dynamic linker is installed.
1144# We are currently going for the convention that `/lib/ld.so.1'
1145# names the SVR4/ELF ABI-compliant dynamic linker.
1146ifndef rtld-installed-name
1147ifdef ld.so-version
1148rtld-installed-name = $(ld.so-version)
1149else
1150rtld-installed-name = ld.so.1
1151endif
1152endif
1153
1ef32c3d
UD
1154ifndef rtld-version-installed-name
1155rtld-version-installed-name = ld-$(version).so
1156endif
1157
f649c201
UD
1158endif # build-shared
1159
cbdee279 1160
94e365c6
UD
1161ifeq ($(build-shared),yes)
1162libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
1163else
1164libdl = $(common-objpfx)dlfcn/libdl.a
1165endif
94e365c6 1166
6ee65ed6
UD
1167ifeq ($(build-shared),yes)
1168libm = $(common-objpfx)math/libm.so$(libm.so-version)
5695d46f 1169libmvec = $(common-objpfx)mathvec/libmvec.so$(libmvec.so-version)
6ee65ed6
UD
1170else
1171libm = $(common-objpfx)math/libm.a
5695d46f 1172libmvec = $(common-objpfx)mathvec/libmvec.a
6ee65ed6
UD
1173endif
1174
c23de0aa
FW
1175ifeq ($(build-shared),yes)
1176libsupport = $(common-objpfx)support/libsupport_nonshared.a
1177else
1178libsupport = $(common-objpfx)support/libsupport.a
1179endif
1180
bb41a976
UD
1181# These are the subdirectories containing the library source. The order
1182# is more or less arbitrary. The sorting step will take care of the
e0a3ed4f 1183# dependencies.
8d6f1731 1184all-subdirs = csu assert ctype locale intl catgets math setjmp signal \
e0a3ed4f 1185 stdlib stdio-common libio malloc string wcsmbs time dirent \
b0b67c47 1186 grp pwd posix io termios resource misc socket sysvipc gmon \
829fea46 1187 gnulib iconv iconvdata wctype manual shadow gshadow po argp \
c23de0aa 1188 crypt localedata timezone rt conform debug mathvec support \
c10f90dc 1189 $(add-on-subdirs) dlfcn elf
b22fc5f5 1190
b7e2d9a5 1191ifndef avoid-generated
7bd642f5
RM
1192# sysd-sorted itself will contain rules making the sysd-sorted target
1193# depend on Depend files. But if you just added a Depend file to an
1194# existing directory not in all-subdirs, then sysd-sorted needs to
1195# be regenerated, so it depends on existing $(sorted-subdirs:=/Depend) files.
1196all-Depend-files := $(wildcard $(sort \
95afbbe5 1197 $(foreach dir,$(all-subdirs),\
7bd642f5
RM
1198 $(firstword $($(dir)-srcdir) \
1199 $(..)$(dir))/Depend) \
1200 $(sorted-subdirs:=/Depend)))
e0a3ed4f
RM
1201$(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk \
1202 $(common-objpfx)config.make $(..)Makeconfig \
1203 $(wildcard $(sysdirs:=/Subdirs)) \
1204 $(all-Depend-files)
1205 $(AWK) -f $< \
1206 -v subdirs='$(all-subdirs)' \
1207 -v srcpfx='$(..)' \
1208 $(filter %/Subdirs %/Depend,$^) > $@-tmp
bb41a976 1209 mv -f $@-tmp $@
9de06f3c 1210$(all-Depend-files): ;
b7e2d9a5 1211endif
bb41a976 1212
16cd816f
RM
1213# This gives partial TARGET:SOURCE pattern pairs to have rules
1214# emitted into sysd-rules. A sysdeps Makeconfig fragment can
1215# add its own special object file prefix to this list with e.g. foo-%:%
1216# to have foo-*.? compiled from *.? using $(foo-CPPFLAGS).
bc96fbda 1217sysd-rules-patterns := %:% rtld-%:rtld-% rtld-%:% m_%:s_%
16cd816f 1218
083973f3 1219# Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here.
e0a3ed4f 1220sysdep-makeconfigs := $(wildcard $(+sysdep_dirs:=/Makeconfig))
083973f3 1221ifneq (,$(sysdep-makeconfigs))
e0a3ed4f 1222include $(sysdep-makeconfigs)
083973f3
RM
1223endif
1224
363a641b 1225# Compute just the target patterns. Makeconfig has set sysd-rules-patterns.
bc96fbda
AS
1226sysd-rules-targets := $(sort $(foreach p,$(sysd-rules-patterns),\
1227 $(firstword $(subst :, ,$p))))
083973f3 1228
c75ccd4c
RM
1229# A sysdeps Makeconfig fragment may set libc-reentrant to yes.
1230ifeq (yes,$(libc-reentrant))
1231defines += -D_LIBC_REENTRANT
1232
1233libio-mtsafe = -D_IO_MTSAFE_IO
1234endif
1235
591aeaf7
TD
1236# The name to give to a test in test results summaries.
1237test-name = $(strip $(patsubst %.out, %, $(patsubst $(common-objpfx)%, %, $@)))
1238
54ee292d
JM
1239# Likewise, in XFAIL variable names.
1240test-xfail-name = $(strip $(patsubst %.out, %, $(patsubst $(objpfx)%, %, $@)))
1241
f8c17e79 1242# Command to output a test status line (such as PASS: test-name). If
54ee292d 1243# test-xfail-$(test-xfail-name) has a nonempty value, the status will be
f8c17e79 1244# XPASS or XFAIL rather than PASS or FAIL.
591aeaf7 1245evaluate-test = $(..)scripts/evaluate-test.sh $(test-name) $$? \
54ee292d 1246 $(if $(test-xfail-$(test-xfail-name)),true,false) \
d6fe5e58 1247 $(if $(stop-on-test-failure),true,false) \
591aeaf7
TD
1248 > $(common-objpfx)$(test-name).test-result
1249
28f540f4 1250endif # Makeconfig not yet included
c238ecf7
UD
1251
1252# Local Variables:
1253# mode: makefile
1254# End: