| | 1 | # Copyright (C) 1991-2014 Free Software Foundation, Inc. |
| | 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 |
| | 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. |
| | 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 |
| | 12 | # Lesser General Public License for more details. |
| | 13 | |
| | 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 | # <http://www.gnu.org/licenses/>. |
| | 17 | |
| | 18 | # |
| | 19 | # Makefile configuration options for the GNU C library. |
| | 20 | # |
| | 21 | ifneq (,) |
| | 22 | This makefile requires GNU Make. |
| | 23 | endif |
| | 24 | |
| | 25 | all: # Make this the default goal |
| | 26 | |
| | 27 | ifneq "$(origin +included-Makeconfig)" "file" |
| | 28 | |
| | 29 | +included-Makeconfig := yes |
| | 30 | |
| | 31 | ifdef subdir |
| | 32 | .. := ../ |
| | 33 | endif |
| | 34 | |
| | 35 | # $(common-objdir) is the place to put objects and |
| | 36 | # such that are not specific to a single subdir. |
| | 37 | ifdef objdir |
| | 38 | objpfx := $(patsubst %//,%/,$(objdir)/$(subdir)/) |
| | 39 | common-objpfx = $(objdir)/ |
| | 40 | common-objdir = $(objdir) |
| | 41 | else |
| | 42 | objdir must be defined by the build-directory Makefile. |
| | 43 | endif |
| | 44 | |
| | 45 | # Root of the sysdeps tree. |
| | 46 | sysdep_dir := $(..)sysdeps |
| | 47 | export sysdep_dir := $(sysdep_dir) |
| | 48 | |
| | 49 | # Get the values defined by options to `configure'. |
| | 50 | include $(common-objpfx)config.make |
| | 51 | |
| | 52 | # What flags to give to sources which call user provided callbacks |
| | 53 | uses-callbacks = $(exceptions) |
| | 54 | |
| | 55 | # What flags to give to tests which test stack alignment |
| | 56 | stack-align-test-flags = |
| | 57 | |
| | 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)) |
| | 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. |
| | 67 | sysdeps-srcdirs := $(foreach add-on,$(sysdeps-add-ons),\ |
| | 68 | $(firstword $(filter /%,$(add-on)) \ |
| | 69 | $(..)$(add-on))) |
| | 70 | +sysdep_dirs = $(sysdirs) $(sysdeps-srcdirs) |
| | 71 | ifdef objdir |
| | 72 | +sysdep_dirs := $(objdir) $(+sysdep_dirs) |
| | 73 | endif |
| | 74 | |
| | 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. |
| | 80 | $(common-objpfx)config.make: $(common-objpfx)config.status \ |
| | 81 | $(..)config.make.in $(..)config.h.in |
| | 82 | cd $(<D); $(SHELL) $(<F) |
| | 83 | |
| | 84 | # Find all the add-on and sysdeps configure fragments, to make sure we |
| | 85 | # re-run configure when any of them changes. |
| | 86 | $(common-objpfx)config.status: $(..)version.h $(..)configure \ |
| | 87 | $(foreach dir,$(sysdirs),\ |
| | 88 | $(wildcard $(dir)/Implies) \ |
| | 89 | $(patsubst %.ac,%,\ |
| | 90 | $(firstword $(wildcard \ |
| | 91 | $(addprefix $(dir)/,configure configure.ac))))) \ |
| | 92 | $(patsubst %.ac,%,\ |
| | 93 | $(wildcard $(..)sysdeps/*/preconfigure $(..)sysdeps/*/preconfigure.ac)) \ |
| | 94 | $(patsubst %.ac,%,\ |
| | 95 | $(foreach add-on,$(add-ons),\ |
| | 96 | $(firstword $(wildcard \ |
| | 97 | $(addprefix $(firstword $(filter /%,$(add-on)) $(..)$(add-on))/,\ |
| | 98 | configure configure.ac))) \ |
| | 99 | $(wildcard $(addprefix $(firstword $(filter /%,$(add-on)) $(..)$(add-on))/,\ |
| | 100 | sysdeps/*/preconfigure sysdeps/*/preconfigure.ac)))) |
| | 101 | @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \ |
| | 102 | echo The GNU C library has not been configured. >&2; \ |
| | 103 | echo Run \`configure\' to configure it before building. >&2; \ |
| | 104 | echo Try \`configure --help\' for more details. >&2; \ |
| | 105 | exit 1; fi |
| | 106 | |
| | 107 | # We don't want CPPFLAGS to be exported to the command running configure. |
| | 108 | unexport CPPFLAGS |
| | 109 | |
| | 110 | # Get the user's configuration parameters. |
| | 111 | ifneq ($(wildcard $(..)configparms),) |
| | 112 | include $(..)configparms |
| | 113 | endif |
| | 114 | ifneq ($(objpfx),) |
| | 115 | ifneq ($(wildcard $(common-objpfx)configparms),) |
| | 116 | include $(common-objpfx)configparms |
| | 117 | endif |
| | 118 | endif |
| | 119 | \f |
| | 120 | #### |
| | 121 | #### These are the configuration variables. You can define values for |
| | 122 | #### the variables below in the file `configparms'. |
| | 123 | #### Do NOT edit this file. |
| | 124 | #### |
| | 125 | |
| | 126 | |
| | 127 | # Common prefix for machine-independent installation directories. |
| | 128 | ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value. |
| | 129 | prefix = /usr/local |
| | 130 | endif |
| | 131 | |
| | 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. |
| | 135 | ifndef build-programs |
| | 136 | ifneq ($(config-os),none) |
| | 137 | build-programs=yes |
| | 138 | else |
| | 139 | build-programs=no |
| | 140 | endif |
| | 141 | endif |
| | 142 | |
| | 143 | # Common prefix for machine-dependent installation directories. |
| | 144 | ifeq ($(origin exec_prefix),undefined) |
| | 145 | exec_prefix = $(prefix) |
| | 146 | endif |
| | 147 | |
| | 148 | # Where to install the library and object files. |
| | 149 | ifndef libdir |
| | 150 | libdir = $(exec_prefix)/lib |
| | 151 | endif |
| | 152 | inst_libdir = $(install_root)$(libdir) |
| | 153 | |
| | 154 | # Where to install the shared library. |
| | 155 | ifndef slibdir |
| | 156 | slibdir = $(exec_prefix)/lib |
| | 157 | endif |
| | 158 | inst_slibdir = $(install_root)$(slibdir) |
| | 159 | |
| | 160 | # Where to install the dynamic linker. |
| | 161 | ifndef rtlddir |
| | 162 | rtlddir = $(slibdir) |
| | 163 | endif |
| | 164 | inst_rtlddir = $(install_root)$(rtlddir) |
| | 165 | |
| | 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. |
| | 170 | ifeq ($(origin libprefix),undefined) |
| | 171 | libprefix = |
| | 172 | endif |
| | 173 | |
| | 174 | # Where to install the header files. |
| | 175 | ifndef includedir |
| | 176 | includedir = $(prefix)/include |
| | 177 | endif |
| | 178 | inst_includedir = $(install_root)$(includedir) |
| | 179 | |
| | 180 | # Where to install machine-independent data files. |
| | 181 | # These are the timezone database, and the locale database. |
| | 182 | ifndef datadir |
| | 183 | datadir = $(prefix)/share |
| | 184 | endif |
| | 185 | inst_datadir = $(install_root)$(datadir) |
| | 186 | |
| | 187 | # Where to install the timezone data files (which are machine-independent). |
| | 188 | ifndef zonedir |
| | 189 | zonedir = $(datadir)/zoneinfo |
| | 190 | endif |
| | 191 | inst_zonedir = $(install_root)$(zonedir) |
| | 192 | |
| | 193 | # Where to install the locale files. |
| | 194 | ifndef localedir |
| | 195 | localedir = $(libdir)/locale |
| | 196 | endif |
| | 197 | inst_localedir = $(install_root)$(localedir) |
| | 198 | |
| | 199 | # Where to install the message catalog data files (which are |
| | 200 | # machine-independent). |
| | 201 | ifndef msgcatdir |
| | 202 | msgcatdir = $(datadir)/locale |
| | 203 | endif |
| | 204 | inst_msgcatdir = $(install_root)$(msgcatdir) |
| | 205 | |
| | 206 | # Where to install the locale charmap source files. |
| | 207 | ifndef i18ndir |
| | 208 | i18ndir = $(datadir)/i18n |
| | 209 | endif |
| | 210 | inst_i18ndir = $(install_root)$(i18ndir) |
| | 211 | |
| | 212 | # Where to install the shared object for charset transformation. |
| | 213 | ifndef gconvdir |
| | 214 | gconvdir = $(libdir)/gconv |
| | 215 | endif |
| | 216 | inst_gconvdir = $(install_root)$(gconvdir) |
| | 217 | |
| | 218 | # Where to install programs. |
| | 219 | ifndef bindir |
| | 220 | bindir = $(exec_prefix)/bin |
| | 221 | endif |
| | 222 | inst_bindir = $(install_root)$(bindir) |
| | 223 | |
| | 224 | # Where to install internal programs. |
| | 225 | ifndef libexecdir |
| | 226 | libexecdir = $(exec_prefix)/libexec |
| | 227 | endif |
| | 228 | inst_libexecdir = $(install_root)$(libexecdir) |
| | 229 | |
| | 230 | # Where to install administrative programs. |
| | 231 | ifndef rootsbindir |
| | 232 | rootsbindir = $(exec_prefix)/sbin |
| | 233 | endif |
| | 234 | inst_rootsbindir = $(install_root)$(rootsbindir) |
| | 235 | |
| | 236 | ifndef sbindir |
| | 237 | sbindir = $(exec_prefix)/sbin |
| | 238 | endif |
| | 239 | inst_sbindir = $(install_root)$(sbindir) |
| | 240 | |
| | 241 | # Where to install the Info files. |
| | 242 | ifndef infodir |
| | 243 | infodir = $(prefix)/info |
| | 244 | endif |
| | 245 | inst_infodir = $(install_root)$(infodir) |
| | 246 | |
| | 247 | # Where to install audit libraries. |
| | 248 | ifndef auditdir |
| | 249 | auditdir = $(libdir)/audit |
| | 250 | endif |
| | 251 | inst_auditdir = $(install_root)$(auditdir) |
| | 252 | |
| | 253 | # Where to install default configuration files. These include the local |
| | 254 | # timezone specification and network data base files. |
| | 255 | ifndef sysconfdir |
| | 256 | sysconfdir = $(prefix)/etc |
| | 257 | endif |
| | 258 | inst_sysconfdir = $(install_root)$(sysconfdir) |
| | 259 | |
| | 260 | # Directory for the database files and Makefile for nss_db. |
| | 261 | ifndef vardbdir |
| | 262 | vardbdir = $(localstatedir)/db |
| | 263 | endif |
| | 264 | inst_vardbdir = $(install_root)$(vardbdir) |
| | 265 | |
| | 266 | # Where to install the "localtime" timezone file; this is the file whose |
| | 267 | # contents $(localtime) specifies. If this is a relative pathname, it is |
| | 268 | # relative to $(zonedir). It is a good idea to put this somewhere |
| | 269 | # other than there, so the zoneinfo directory contains only universal data, |
| | 270 | # localizing the configuration data elsewhere. |
| | 271 | ifndef localtime-file |
| | 272 | localtime-file = $(sysconfdir)/localtime |
| | 273 | endif |
| | 274 | |
| | 275 | # What to use for leap second specifications in compiling the default |
| | 276 | # timezone files. Set this to `/dev/null' for no leap second handling as |
| | 277 | # 1003.1 requires, or to `leapseconds' for proper leap second handling. |
| | 278 | # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'. |
| | 279 | # This variable determines the default: if it's `/dev/null', |
| | 280 | # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE. |
| | 281 | ifndef leapseconds |
| | 282 | leapseconds = /dev/null |
| | 283 | endif |
| | 284 | |
| | 285 | # What timezone's DST rules should be used when a POSIX-style TZ |
| | 286 | # environment variable doesn't specify any rules. For 1003.1 compliance |
| | 287 | # this timezone must use rules that are as U.S. federal law defines DST. |
| | 288 | # Run `make -C time echo-zonenames' to see a list of available zone names. |
| | 289 | # This setting can be changed with `zic -p TIMEZONE' at any time. |
| | 290 | # If you want POSIX.1 compatibility, use `America/New_York'. |
| | 291 | ifndef posixrules |
| | 292 | posixrules = America/New_York |
| | 293 | endif |
| | 294 | |
| | 295 | # Where to install the "posixrules" timezone file; this is file |
| | 296 | # whose contents $(posixrules) specifies. If this is a relative |
| | 297 | # pathname, it is relative to $(zonedir). |
| | 298 | ifndef posixrules-file |
| | 299 | posixrules-file = posixrules |
| | 300 | endif |
| | 301 | |
| | 302 | |
| | 303 | # Directory where your system's native header files live. |
| | 304 | # This is used on Unix systems to generate some GNU libc header files. |
| | 305 | ifndef sysincludedir |
| | 306 | sysincludedir = /usr/include |
| | 307 | endif |
| | 308 | |
| | 309 | |
| | 310 | # Commands to install files. |
| | 311 | ifndef INSTALL_DATA |
| | 312 | INSTALL_DATA = $(INSTALL) -m 644 |
| | 313 | endif |
| | 314 | ifndef INSTALL_SCRIPT |
| | 315 | INSTALL_SCRIPT = $(INSTALL) |
| | 316 | endif |
| | 317 | ifndef INSTALL_PROGRAM |
| | 318 | INSTALL_PROGRAM = $(INSTALL) |
| | 319 | endif |
| | 320 | ifndef INSTALL |
| | 321 | INSTALL = install |
| | 322 | endif |
| | 323 | |
| | 324 | |
| | 325 | # The name of the C compiler. |
| | 326 | # If you've got GCC, and it works, use it. |
| | 327 | ifeq ($(origin CC),default) |
| | 328 | CC := gcc |
| | 329 | endif |
| | 330 | |
| | 331 | # The name of the C compiler to use for compilations of programs to run on |
| | 332 | # the host that is building the library. If you set CC to a |
| | 333 | # cross-compiler, you must set this to the normal compiler. |
| | 334 | ifndef BUILD_CC |
| | 335 | BUILD_CC = $(CC) |
| | 336 | endif |
| | 337 | |
| | 338 | # Default flags to pass the C compiler. |
| | 339 | ifndef default_cflags |
| | 340 | ifeq ($(release),stable) |
| | 341 | default_cflags := -g -O2 |
| | 342 | else |
| | 343 | default_cflags := -g -O |
| | 344 | endif |
| | 345 | endif |
| | 346 | |
| | 347 | # Flags to pass the C compiler when assembling preprocessed assembly code |
| | 348 | # (`.S' files). On some systems the assembler doesn't understand the `#' line |
| | 349 | # directives the preprocessor produces. If you have troubling compiling |
| | 350 | # assembly code, try using -P here to suppress these directives. |
| | 351 | ifndef asm-CPPFLAGS |
| | 352 | asm-CPPFLAGS = |
| | 353 | endif |
| | 354 | |
| | 355 | as-needed := -Wl,--as-needed |
| | 356 | no-as-needed := -Wl,--no-as-needed |
| | 357 | |
| | 358 | # Must be supported by the linker. |
| | 359 | no-whole-archive = -Wl,--no-whole-archive |
| | 360 | whole-archive = -Wl,--whole-archive |
| | 361 | |
| | 362 | # Installed name of the startup code. |
| | 363 | # The ELF convention is that the startfile is called crt1.o |
| | 364 | start-installed-name = crt1.o |
| | 365 | # On systems that do not need a special startfile for statically linked |
| | 366 | # binaries, simply set it to the normal name. |
| | 367 | ifndef static-start-installed-name |
| | 368 | static-start-installed-name = $(start-installed-name) |
| | 369 | endif |
| | 370 | |
| | 371 | ifeq (yesyes,$(build-shared)$(have-z-combreloc)) |
| | 372 | combreloc-LDFLAGS = -Wl,-z,combreloc |
| | 373 | LDFLAGS.so += $(combreloc-LDFLAGS) |
| | 374 | LDFLAGS-rtld += $(combreloc-LDFLAGS) |
| | 375 | endif |
| | 376 | |
| | 377 | relro-LDFLAGS = -Wl,-z,relro |
| | 378 | LDFLAGS.so += $(relro-LDFLAGS) |
| | 379 | LDFLAGS-rtld += $(relro-LDFLAGS) |
| | 380 | |
| | 381 | ifeq (yes,$(have-hash-style)) |
| | 382 | # For the time being we unconditionally use 'both'. At some time we |
| | 383 | # should declare statically linked code as 'out of luck' and compile |
| | 384 | # with --hash-style=gnu only. |
| | 385 | hashstyle-LDFLAGS = -Wl,--hash-style=both |
| | 386 | LDFLAGS.so += $(hashstyle-LDFLAGS) |
| | 387 | LDFLAGS-rtld += $(hashstyle-LDFLAGS) |
| | 388 | endif |
| | 389 | |
| | 390 | # Command for linking PIE programs with the C library. |
| | 391 | ifndef +link-pie |
| | 392 | +link-pie-before-libc = $(CC) -pie -Wl,-O1 -nostdlib -nostartfiles -o $@ \ |
| | 393 | $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \ |
| | 394 | $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \ |
| | 395 | $(addprefix $(csu-objpfx),S$(start-installed-name)) \ |
| | 396 | $(+preinit) $(+prectorS) \ |
| | 397 | $(filter-out $(addprefix $(csu-objpfx),start.o \ |
| | 398 | S$(start-installed-name))\ |
| | 399 | $(+preinit) $(link-extra-libs) \ |
| | 400 | $(common-objpfx)libc% $(+postinit),$^) \ |
| | 401 | $(link-extra-libs) |
| | 402 | +link-pie-after-libc = $(+postctorS) $(+postinit) |
| | 403 | +link-pie = $(+link-pie-before-libc) $(rtld-LDFLAGS) $(link-libc) \ |
| | 404 | $(+link-pie-after-libc) |
| | 405 | +link-pie-tests = $(+link-pie-before-libc) $(rtld-tests-LDFLAGS) \ |
| | 406 | $(link-libc-tests) $(+link-pie-after-libc) |
| | 407 | endif |
| | 408 | # Command for statically linking programs with the C library. |
| | 409 | ifndef +link-static |
| | 410 | +link-static-before-libc = $(CC) -nostdlib -nostartfiles -static -o $@ \ |
| | 411 | $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \ |
| | 412 | $(addprefix $(csu-objpfx),$(static-start-installed-name)) \ |
| | 413 | $(+preinit) $(+prectorT) \ |
| | 414 | $(filter-out $(addprefix $(csu-objpfx),start.o \ |
| | 415 | $(start-installed-name))\ |
| | 416 | $(+preinit) $(link-extra-libs-static) \ |
| | 417 | $(common-objpfx)libc% $(+postinit),$^) \ |
| | 418 | $(link-extra-libs-static) |
| | 419 | +link-static-after-libc = $(+postctorT) $(+postinit) |
| | 420 | +link-static = $(+link-static-before-libc) $(link-libc-static) \ |
| | 421 | $(+link-static-after-libc) |
| | 422 | +link-static-tests = $(+link-static-before-libc) $(link-libc-static-tests) \ |
| | 423 | $(+link-static-after-libc) |
| | 424 | endif |
| | 425 | # Commands for linking programs with the C library. |
| | 426 | ifndef +link |
| | 427 | ifeq (yes,$(build-shared)) |
| | 428 | +link-before-libc = $(CC) -nostdlib -nostartfiles -o $@ \ |
| | 429 | $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \ |
| | 430 | $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \ |
| | 431 | $(addprefix $(csu-objpfx),$(start-installed-name)) \ |
| | 432 | $(+preinit) $(+prector) \ |
| | 433 | $(filter-out $(addprefix $(csu-objpfx),start.o \ |
| | 434 | $(start-installed-name))\ |
| | 435 | $(+preinit) $(link-extra-libs) \ |
| | 436 | $(common-objpfx)libc% $(+postinit),$^) \ |
| | 437 | $(link-extra-libs) |
| | 438 | +link-after-libc = $(+postctor) $(+postinit) |
| | 439 | +link = $(+link-before-libc) $(rtld-LDFLAGS) $(link-libc) \ |
| | 440 | $(+link-after-libc) |
| | 441 | +link-tests = $(+link-before-libc) $(rtld-tests-LDFLAGS) \ |
| | 442 | $(link-libc-tests) $(+link-after-libc) |
| | 443 | else |
| | 444 | +link = $(+link-static) |
| | 445 | +link-tests = $(+link-static-tests) |
| | 446 | endif |
| | 447 | endif |
| | 448 | ifeq (yes,$(build-shared)) |
| | 449 | ifndef rtld-LDFLAGS |
| | 450 | rtld-LDFLAGS = -Wl,-dynamic-linker=$(rtlddir)/$(rtld-installed-name) |
| | 451 | endif |
| | 452 | ifndef rtld-tests-LDFLAGS |
| | 453 | ifeq (yes,$(build-hardcoded-path-in-tests)) |
| | 454 | rtld-tests-LDFLAGS = -Wl,-dynamic-linker=$(elf-objpfx)ld.so |
| | 455 | else |
| | 456 | rtld-tests-LDFLAGS = $(rtld-LDFLAGS) |
| | 457 | endif |
| | 458 | endif |
| | 459 | endif |
| | 460 | ifndef link-libc |
| | 461 | ifeq (yes,$(build-shared)) |
| | 462 | # We need the versioned name of libc.so in the deps of $(others) et al |
| | 463 | # so that the symlink to libc.so is created before anything tries to |
| | 464 | # run the linked programs. |
| | 465 | link-libc-rpath-link = -Wl,-rpath-link=$(rpath-link) |
| | 466 | ifeq (yes,$(build-hardcoded-path-in-tests)) |
| | 467 | link-libc-tests-rpath-link = -Wl,-rpath=$(rpath-link) |
| | 468 | else |
| | 469 | link-libc-tests-rpath-link = $(link-libc-rpath-link) |
| | 470 | endif |
| | 471 | link-libc-before-gnulib = $(common-objpfx)libc.so$(libc.so-version) \ |
| | 472 | $(common-objpfx)$(patsubst %,$(libtype.oS),c) \ |
| | 473 | $(as-needed) $(elf-objpfx)ld.so \ |
| | 474 | $(no-as-needed) |
| | 475 | link-libc = $(link-libc-rpath-link) $(link-libc-before-gnulib) $(gnulib) |
| | 476 | link-libc-tests = $(link-libc-tests-rpath-link) \ |
| | 477 | $(link-libc-before-gnulib) $(gnulib-tests) |
| | 478 | # This is how to find at build-time things that will be installed there. |
| | 479 | rpath-dirs = math elf dlfcn nss nis rt resolv crypt |
| | 480 | rpath-link = \ |
| | 481 | $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%))) |
| | 482 | else |
| | 483 | link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib) |
| | 484 | link-libc-tests = $(common-objpfx)libc.a $(otherlibs) $(gnulib-tests) $(common-objpfx)libc.a $(gnulib-tests) |
| | 485 | endif |
| | 486 | endif |
| | 487 | |
| | 488 | # Differences in the linkers on the various platforms. |
| | 489 | LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN' |
| | 490 | LDFLAGS-soname-fname = -Wl,-soname,$(@F) |
| | 491 | LDFLAGS-rdynamic = -rdynamic |
| | 492 | LDFLAGS-Bsymbolic = -Bsymbolic |
| | 493 | |
| | 494 | # Choose the default search path for the dynamic linker based on |
| | 495 | # where we will install libraries. |
| | 496 | ifneq ($(libdir),$(slibdir)) |
| | 497 | default-rpath = $(slibdir):$(libdir) |
| | 498 | else |
| | 499 | default-rpath = $(libdir) |
| | 500 | endif |
| | 501 | |
| | 502 | ifndef link-extra-libs |
| | 503 | link-extra-libs = $(LDLIBS-$(@F)) |
| | 504 | link-extra-libs-static = $(link-extra-libs) |
| | 505 | endif |
| | 506 | |
| | 507 | # The static libraries. |
| | 508 | link-libc-static = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib) -Wl,--end-group |
| | 509 | link-libc-static-tests = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib-tests) -Wl,--end-group |
| | 510 | |
| | 511 | # How to link against libgcc. Some libgcc functions, such as those |
| | 512 | # for "long long" arithmetic or software floating point, can always be |
| | 513 | # built without use of C library headers and do not have any global |
| | 514 | # state so can safely be linked statically into any executable or |
| | 515 | # shared library requiring them; these functions are in libgcc.a. |
| | 516 | # Other functions, relating to exception handling, may require C |
| | 517 | # library headers to build and it may not be safe to have more than |
| | 518 | # one copy of them in a process; these functions are only in |
| | 519 | # libgcc_s.so and libgcc_eh.a. |
| | 520 | # |
| | 521 | # To avoid circular dependencies when bootstrapping, it is desirable |
| | 522 | # to avoid use of libgcc_s and libgcc_eh in building glibc. Where any |
| | 523 | # glibc functionality (in particular, thread cancellation) requires |
| | 524 | # exception handling, this is implemented through dlopen of libgcc_s |
| | 525 | # to avoid unnecessary dependencies on libgcc_s by programs not using |
| | 526 | # that functionality; executables built with glibc do not use |
| | 527 | # exception handling other than through thread cancellation. |
| | 528 | # |
| | 529 | # Undefined references to functions from libgcc_eh or libgcc_s may |
| | 530 | # arise for code built with -fexceptions. In the case of statically |
| | 531 | # linked programs installed by glibc, unwinding will never actually |
| | 532 | # occur at runtime and the use of elf/static-stubs.c to resolve these |
| | 533 | # references is safe. In the case of statically linked test programs |
| | 534 | # and test programs built with -fexceptions, unwinding may occur in |
| | 535 | # some cases and it is preferable to link with libgcc_eh or libgcc_s |
| | 536 | # so that the testing is as similar as possible to how programs will |
| | 537 | # be built with the installed glibc. |
| | 538 | # |
| | 539 | # Some architectures have architecture-specific systems for exception |
| | 540 | # handling that may involve undefined references to |
| | 541 | # architecture-specific functions. On those architectures, |
| | 542 | # gnulib-arch and static-gnulib-arch may be defined in sysdeps |
| | 543 | # makefiles to use additional libraries for linking executables and |
| | 544 | # shared libraries built by glibc. |
| | 545 | ifndef gnulib |
| | 546 | ifneq ($(have-cc-with-libunwind),yes) |
| | 547 | libunwind = |
| | 548 | else |
| | 549 | libunwind = -lunwind |
| | 550 | endif |
| | 551 | libgcc_eh := -Wl,--as-needed -lgcc_s $(libunwind) -Wl,--no-as-needed |
| | 552 | gnulib-arch = |
| | 553 | gnulib = -lgcc $(gnulib-arch) |
| | 554 | gnulib-tests := -lgcc $(libgcc_eh) |
| | 555 | static-gnulib-arch = |
| | 556 | # By default, elf/static-stubs.o, instead of -lgcc_eh, is used to |
| | 557 | # statically link programs. When --disable-shared is used, we use |
| | 558 | # -lgcc_eh since elf/static-stubs.o isn't sufficient. |
| | 559 | ifeq (yes,$(build-shared)) |
| | 560 | static-gnulib = -lgcc $(static-gnulib-arch) |
| | 561 | else |
| | 562 | static-gnulib = -lgcc -lgcc_eh $(static-gnulib-arch) |
| | 563 | endif |
| | 564 | static-gnulib-tests := -lgcc -lgcc_eh $(libunwind) |
| | 565 | libc.so-gnulib := -lgcc |
| | 566 | endif |
| | 567 | +preinit = $(addprefix $(csu-objpfx),crti.o) |
| | 568 | +postinit = $(addprefix $(csu-objpfx),crtn.o) |
| | 569 | +prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbegin.o` |
| | 570 | +postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o` |
| | 571 | # Variants of the two previous definitions for linking PIE programs. |
| | 572 | +prectorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginS.o` |
| | 573 | +postctorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtendS.o` |
| | 574 | # Variants of the two previous definitions for statically linking programs. |
| | 575 | +prectorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginT.o` |
| | 576 | +postctorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o` |
| | 577 | +interp = $(addprefix $(elf-objpfx),interp.os) |
| | 578 | csu-objpfx = $(common-objpfx)csu/ |
| | 579 | elf-objpfx = $(common-objpfx)elf/ |
| | 580 | |
| | 581 | # A command that, prepended to the name and arguments of a program, |
| | 582 | # and run on the build system, causes that program with those |
| | 583 | # arguments to be run on the host for which the library is built. |
| | 584 | ifndef test-wrapper |
| | 585 | test-wrapper = |
| | 586 | endif |
| | 587 | # Likewise, but the name of the program is preceded by |
| | 588 | # <variable>=<value> assignments for environment variables. |
| | 589 | ifndef test-wrapper-env |
| | 590 | test-wrapper-env = $(test-wrapper) env |
| | 591 | endif |
| | 592 | |
| | 593 | # Whether to run test programs built for the library's host system. |
| | 594 | ifndef run-built-tests |
| | 595 | ifeq (yes|,$(cross-compiling)|$(test-wrapper)) |
| | 596 | run-built-tests = no |
| | 597 | else |
| | 598 | run-built-tests = yes |
| | 599 | endif |
| | 600 | endif |
| | 601 | |
| | 602 | # Whether to stop immediately when a test fails. Nonempty means to |
| | 603 | # stop, empty means not to stop. |
| | 604 | ifndef stop-on-test-failure |
| | 605 | stop-on-test-failure = |
| | 606 | endif |
| | 607 | |
| | 608 | # How to run a program we just linked with our library. |
| | 609 | # The program binary is assumed to be $(word 2,$^). |
| | 610 | built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^)) |
| | 611 | rtld-prefix = $(elf-objpfx)$(rtld-installed-name) \ |
| | 612 | --library-path \ |
| | 613 | $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) |
| | 614 | ifeq (yes,$(build-shared)) |
| | 615 | comma = , |
| | 616 | sysdep-library-path = \ |
| | 617 | $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\ |
| | 618 | $(filter -Wl$(comma)-rpath-link=%,\ |
| | 619 | $(sysdep-LDFLAGS))))) |
| | 620 | # $(run-via-rtld-prefix) is a command that, when prepended to the name |
| | 621 | # of a program built with the newly built library, produces a command |
| | 622 | # that, executed on the host for which the library is built, runs that |
| | 623 | # program. For tests listed in tests-static or xtests-static, it is |
| | 624 | # empty. |
| | 625 | run-via-rtld-prefix = \ |
| | 626 | $(if $(strip $(filter $(notdir $(built-program-file)), \ |
| | 627 | $(tests-static) $(xtests-static))),, $(rtld-prefix)) |
| | 628 | else |
| | 629 | run-via-rtld-prefix = |
| | 630 | endif |
| | 631 | # $(run-program-env) is the default environment variable settings to |
| | 632 | # use when running a program built with the newly built library. |
| | 633 | run-program-env = GCONV_PATH=$(common-objpfx)iconvdata \ |
| | 634 | LOCPATH=$(common-objpfx)localedata LC_ALL=C |
| | 635 | # $(run-program-prefix) is a command that, when prepended to the name |
| | 636 | # of a program built with the newly built library, produces a command |
| | 637 | # that, executed on the build system on which "make" is run, runs that |
| | 638 | # program. $(run-program-prefix-before-env) and |
| | 639 | # $(run-program-prefix-after-env) are similar, but separate parts |
| | 640 | # before and after a list of environment variables. |
| | 641 | run-program-prefix-before-env = $(test-wrapper-env) |
| | 642 | run-program-prefix-after-env = $(run-via-rtld-prefix) |
| | 643 | run-program-prefix = $(run-program-prefix-before-env) $(run-program-env) \ |
| | 644 | $(run-program-prefix-after-env) |
| | 645 | # $(built-program-cmd) is a command that, executed on the build system |
| | 646 | # on which "make" is run, runs the newly built program that is the |
| | 647 | # second dependency of the makefile target in which |
| | 648 | # $(built-program-cmd) is used. $(built-program-cmd-before-env) and |
| | 649 | # $(built-program-cmd-after-env) are similar, before and after a list |
| | 650 | # of environment variables. |
| | 651 | built-program-cmd-before-env = $(test-wrapper-env) |
| | 652 | built-program-cmd-after-env = $(run-via-rtld-prefix) $(built-program-file) |
| | 653 | built-program-cmd = $(built-program-cmd-before-env) $(run-program-env) \ |
| | 654 | $(built-program-cmd-after-env) |
| | 655 | # $(host-built-program-cmd) is a command that, executed on the host |
| | 656 | # for which the library is built, runs the newly built program that is |
| | 657 | # the second dependency of the makefile target in which |
| | 658 | # $(host-built-program-cmd) is used. |
| | 659 | host-built-program-cmd = $(run-via-rtld-prefix) $(built-program-file) |
| | 660 | |
| | 661 | ifndef LD |
| | 662 | LD := ld -X |
| | 663 | endif |
| | 664 | |
| | 665 | # $(test-via-rtld-prefix) is a command that, when prepended to the name |
| | 666 | # of a test program built with the newly built library, produces a command |
| | 667 | # that, executed on the host for which the library is built, runs that |
| | 668 | # program. For tests listed in tests-static or xtests-static as well |
| | 669 | # as when test programs are hardcoded to the newly built libraries, it |
| | 670 | # is empty. |
| | 671 | |
| | 672 | # $(test-program-prefix) is a command that, when prepended to the name |
| | 673 | # of a test program built with the newly built library, produces a command |
| | 674 | # that, executed on the build system on which "make" is run, runs that |
| | 675 | # test program. $(test-program-prefix-before-env) and |
| | 676 | # $(test-program-prefix-after-env) are similar, before and after a |
| | 677 | # list of environment variables. |
| | 678 | |
| | 679 | # $(test-program-cmd) is a command that, executed on the build system |
| | 680 | # on which "make" is run, runs the newly built test program that is the |
| | 681 | # second dependency of the makefile target in which |
| | 682 | # $(test-program-cmd) is used. $(test-program-cmd-before-env) and |
| | 683 | # $(test-program-cmd-after-env) are similar, before and after a list |
| | 684 | # of environment variables. |
| | 685 | |
| | 686 | # $(host-test-program-cmd) is a command that, executed on the host |
| | 687 | # for which the library is built, runs the newly built test program that |
| | 688 | # is the second dependency of the makefile target in which |
| | 689 | # $(host-test-program-cmd) is used. |
| | 690 | |
| | 691 | ifeq (yes,$(build-hardcoded-path-in-tests)) |
| | 692 | test-via-rtld-prefix = |
| | 693 | test-program-prefix-before-env = $(test-wrapper-env) |
| | 694 | test-program-prefix-after-env = |
| | 695 | test-program-prefix = $(test-program-prefix-before-env) $(run-program-env) \ |
| | 696 | $(test-program-prefix-after-env) |
| | 697 | test-program-cmd-before-env = $(test-wrapper-env) |
| | 698 | test-program-cmd-after-env = $(built-program-file) |
| | 699 | test-program-cmd = $(test-program-cmd-before-env) $(run-program-env) \ |
| | 700 | $(test-program-cmd-after-env) |
| | 701 | host-test-program-cmd = $(built-program-file) |
| | 702 | else |
| | 703 | test-via-rtld-prefix = $(run-via-rtld-prefix) |
| | 704 | test-program-prefix-before-env = $(run-program-prefix-before-env) |
| | 705 | test-program-prefix-after-env = $(run-program-prefix-after-env) |
| | 706 | test-program-prefix = $(run-program-prefix) |
| | 707 | test-program-cmd-before-env = $(built-program-cmd-before-env) |
| | 708 | test-program-cmd-after-env = $(built-program-cmd-after-env) |
| | 709 | test-program-cmd = $(built-program-cmd) |
| | 710 | host-test-program-cmd = $(host-built-program-cmd) |
| | 711 | endif |
| | 712 | |
| | 713 | # Extra flags to pass to GCC. |
| | 714 | ifeq ($(all-warnings),yes) |
| | 715 | +gccwarn := -Wall -Wwrite-strings -Winline -Wcast-qual -Wbad-function-cast -Wmissing-noreturn -Wmissing-prototypes -Wmissing-declarations -Wcomment -Wcomments -Wtrigraphs -Wsign-compare -Wfloat-equal -Wmultichar |
| | 716 | else |
| | 717 | +gccwarn := -Wall -Wwrite-strings -Winline |
| | 718 | endif |
| | 719 | +gccwarn += -Wundef |
| | 720 | +gccwarn-c = -Wstrict-prototypes -Werror=implicit-function-declaration |
| | 721 | |
| | 722 | # We do not depend on the address of constants in different files to be |
| | 723 | # actually different, so allow the compiler to merge them all. |
| | 724 | +merge-constants = -fmerge-all-constants |
| | 725 | |
| | 726 | # We have to assume that glibc functions are called in any rounding |
| | 727 | # mode and also change the rounding mode in a few functions. So, |
| | 728 | # disable any optimization that assume default rounding mode. |
| | 729 | +math-flags = -frounding-math |
| | 730 | |
| | 731 | # This is the program that generates makefile dependencies from C source files. |
| | 732 | # The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy |
| | 733 | # targets for headers so that removed headers don't break the build. |
| | 734 | ifndef +mkdep |
| | 735 | +mkdep = $(CC) -M -MP |
| | 736 | endif |
| | 737 | |
| | 738 | # The program that makes Emacs-style TAGS files. |
| | 739 | ETAGS := etags |
| | 740 | |
| | 741 | # The `xgettext' program for producing .pot files from sources. |
| | 742 | ifndef XGETTEXT |
| | 743 | XGETTEXT = xgettext |
| | 744 | endif |
| | 745 | |
| | 746 | # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and |
| | 747 | # perhaps others) to preprocess assembly code in some cases. |
| | 748 | M4 = m4 |
| | 749 | |
| | 750 | # To force installation of files even if they are older than the |
| | 751 | # installed files. This variable is included in the dependency list |
| | 752 | # of all installation targets. |
| | 753 | ifeq ($(force-install),yes) |
| | 754 | +force = force-install |
| | 755 | else |
| | 756 | +force = |
| | 757 | endif |
| | 758 | |
| | 759 | #### |
| | 760 | #### End of configuration variables. |
| | 761 | #### |
| | 762 | \f |
| | 763 | # This tells some versions of GNU make before 3.63 not to export all variables. |
| | 764 | .NOEXPORT: |
| | 765 | |
| | 766 | # We want to echo the commands we're running without |
| | 767 | # umpteen zillion filenames along with it (we use `...' instead) |
| | 768 | # but we don't want this echoing done when the user has said |
| | 769 | # he doesn't want to see commands echoed by using -s. |
| | 770 | ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s |
| | 771 | +cmdecho := echo >/dev/null |
| | 772 | else # not -s |
| | 773 | +cmdecho := echo |
| | 774 | endif # -s |
| | 775 | |
| | 776 | # These are the flags given to the compiler to tell |
| | 777 | # it what sort of optimization and/or debugging output to do. |
| | 778 | ifndef +cflags |
| | 779 | # If `CFLAGS' was defined, use that. |
| | 780 | ifdef CFLAGS |
| | 781 | +cflags := $(filter-out -I%,$(CFLAGS)) |
| | 782 | endif # CFLAGS |
| | 783 | endif # +cflags |
| | 784 | |
| | 785 | # If none of the above worked, default to "-g -O". |
| | 786 | ifeq "$(strip $(+cflags))" "" |
| | 787 | +cflags := $(default_cflags) |
| | 788 | endif # $(+cflags) == "" |
| | 789 | |
| | 790 | +cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants) $(+math-flags) |
| | 791 | +gcc-nowarn := -w |
| | 792 | |
| | 793 | # Don't duplicate options if we inherited variables from the parent. |
| | 794 | +cflags := $(sort $(+cflags)) |
| | 795 | |
| | 796 | # Each sysdeps directory can contain header files that both will be |
| | 797 | # used to compile and will be installed. Each can also contain an |
| | 798 | # include/ subdirectory, whose header files will be used to compile |
| | 799 | # but will not be installed, and will take precedence over the |
| | 800 | # installed files. This mirrors the top-level include/ subdirectory. |
| | 801 | +sysdep-includes := $(foreach dir,$(+sysdep_dirs),\ |
| | 802 | $(addprefix -I,$(wildcard $(dir)/include) $(dir))) |
| | 803 | |
| | 804 | # These are flags given to the C compiler to tell it to look for |
| | 805 | # include files (including ones given in angle brackets) in the parent |
| | 806 | # library source directory, in the include directory, and in the |
| | 807 | # current directory. |
| | 808 | +includes = -I$(..)include $(if $(subdir),$(objpfx:%/=-I%)) \ |
| | 809 | $(+sysdep-includes) $(includes) \ |
| | 810 | $(patsubst %/,-I%,$(..)) $(libio-include) -I. $(sysincludes) |
| | 811 | |
| | 812 | # Since libio has several internal header files, we use a -I instead |
| | 813 | # of many little headers in the include directory. |
| | 814 | libio-include = -I$(..)libio |
| | 815 | |
| | 816 | in-module = $(subst -,_,$(firstword $(libof-$(basename $(@F))) \ |
| | 817 | $(libof-$(<F)) \ |
| | 818 | $(libof-$(@F)) \ |
| | 819 | libc)) |
| | 820 | |
| | 821 | # These are the variables that the implicit compilation rules use. |
| | 822 | # Note that we can't use -std=* in CPPFLAGS, because it overrides |
| | 823 | # the implicit -lang-asm and breaks cpp behavior for .S files--notably |
| | 824 | # it causes cpp to stop predefining __ASSEMBLER__. |
| | 825 | CPPFLAGS = $(config-extra-cppflags) $(CPPUNDEFS) $(CPPFLAGS-config) \ |
| | 826 | $($(subdir)-CPPFLAGS) \ |
| | 827 | $(+includes) $(defines) \ |
| | 828 | -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \ |
| | 829 | $(CPPFLAGS-$(suffix $@)) -DIN_MODULE=MODULE_$(in-module) \ |
| | 830 | $(foreach lib,$(libof-$(basename $(@F))) \ |
| | 831 | $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \ |
| | 832 | $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F))) |
| | 833 | override CFLAGS = -std=gnu99 $(gnu89-inline-CFLAGS) $(config-extra-cflags) \ |
| | 834 | $(filter-out %frame-pointer,$(+cflags)) $(+gccwarn-c) \ |
| | 835 | $(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) \ |
| | 836 | $(CFLAGS-$(@F)) \ |
| | 837 | $(foreach lib,$(libof-$(basename $(@F))) \ |
| | 838 | $(libof-$(<F)) $(libof-$(@F)),$(CFLAGS-$(lib))) |
| | 839 | override CXXFLAGS = $(c++-sysincludes) \ |
| | 840 | $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \ |
| | 841 | $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F)) |
| | 842 | |
| | 843 | # If everything is compiled with -fPIC (implicitly) we must tell this by |
| | 844 | # defining the PIC symbol. |
| | 845 | ifeq (yes,$(build-pic-default)) |
| | 846 | pic-default = -DPIC |
| | 847 | endif |
| | 848 | |
| | 849 | # Enable object files for different versions of the library. |
| | 850 | # Various things use $(object-suffixes) to know what all to make. |
| | 851 | # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX}) |
| | 852 | # to pass different flags for each flavor. |
| | 853 | libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o)) |
| | 854 | all-object-suffixes := .o .os .op .og .oS |
| | 855 | object-suffixes := |
| | 856 | CPPFLAGS-.o = $(pic-default) |
| | 857 | CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) |
| | 858 | libtype.o := lib%.a |
| | 859 | object-suffixes += .o |
| | 860 | ifeq (yes,$(build-shared)) |
| | 861 | # Under --enable-shared, we will build a shared library of PIC objects. |
| | 862 | # The PIC object files are named foo.os. |
| | 863 | object-suffixes += .os |
| | 864 | CPPFLAGS-.os = -DPIC -DSHARED |
| | 865 | CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag) |
| | 866 | libtype.os := lib%_pic.a |
| | 867 | # This can be changed by a sysdep makefile |
| | 868 | pic-ccflag = -fPIC |
| | 869 | # This one should always stay like this unless there is a very good reason. |
| | 870 | PIC-ccflag = -fPIC |
| | 871 | endif |
| | 872 | # This can be changed by a sysdep makefile |
| | 873 | pie-ccflag = -fpie |
| | 874 | # This one should always stay like this unless there is a very good reason. |
| | 875 | PIE-ccflag = -fPIE |
| | 876 | ifeq (yes,$(build-profile)) |
| | 877 | # Under --enable-profile, we will build a static library of profiled objects. |
| | 878 | # The profiled object files are named foo.op. |
| | 879 | object-suffixes += .op |
| | 880 | CPPFLAGS-.op = -DPROF $(pic-default) |
| | 881 | CFLAGS-.op = -pg |
| | 882 | libtype.op = lib%_p.a |
| | 883 | endif |
| | 884 | |
| | 885 | # Convenience variable for when we want to treat shared-library cases |
| | 886 | # differently from the rest. |
| | 887 | object-suffixes-noshared := $(filter-out .os,$(object-suffixes)) |
| | 888 | |
| | 889 | object-suffixes-for-libc := $(object-suffixes) |
| | 890 | |
| | 891 | ifeq (yes,$(build-shared)) |
| | 892 | # Build special library that contains the static-only routines for libc. |
| | 893 | object-suffixes-for-libc += .oS |
| | 894 | |
| | 895 | # Must build the routines as PIC, though, because they can end up in (users') |
| | 896 | # shared objects. We don't want to use CFLAGS-os because users may, for |
| | 897 | # example, make that processor-specific. |
| | 898 | CFLAGS-.oS = $(CFLAGS-.o) $(PIC-ccflag) |
| | 899 | CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC -DLIBC_NONSHARED=1 |
| | 900 | libtype.oS = lib%_nonshared.a |
| | 901 | endif |
| | 902 | |
| | 903 | # The assembler can generate debug information too. |
| | 904 | ifndef ASFLAGS |
| | 905 | ASFLAGS := $(filter -g% -fdebug-prefix-map=%,$(CFLAGS)) |
| | 906 | endif |
| | 907 | ASFLAGS += $(ASFLAGS-config) $(asflags-cpu) |
| | 908 | |
| | 909 | ifndef BUILD_CC |
| | 910 | BUILD_CC = $(CC) |
| | 911 | endif |
| | 912 | |
| | 913 | move-if-change = $(SHELL) $(..)scripts/move-if-change |
| | 914 | \f |
| | 915 | -include $(common-objpfx)sysd-sorted |
| | 916 | subdirs = $(sorted-subdirs) |
| | 917 | subdir-srcdirs = $(foreach dir,$(subdirs),\ |
| | 918 | $(firstword $($(dir)-srcdir) $(..)$(dir))) |
| | 919 | |
| | 920 | # This is a pair of implicit rules to preprocess a file with # comments, |
| | 921 | # %ifdef et al, based on config.h settings or other %include'd files. |
| | 922 | # We use chained rules instead of a pipeline here so that we can properly |
| | 923 | # check the exit status of cpp rather than using its bad output when there |
| | 924 | # is a preprocessing error. Another rule should depend on the output file |
| | 925 | # `FOO.v', and along with that `FOO.v.i' should be given dependencies |
| | 926 | # listing both its input files, and any header files that it may reference |
| | 927 | # (but no commands). |
| | 928 | %.v.i: $(common-objpfx)config.h $(..)Makeconfig |
| | 929 | sed '/^[ ]*%/!s/#.*$$//;/^[ ]*$$/d;s/^[ ]*%/#/' \ |
| | 930 | $(filter-out FORCE %.h $(..)Makeconfig,$^) \ |
| | 931 | | $(CC) -E -undef $(CPPFLAGS) -x assembler-with-cpp - \ |
| | 932 | > $@T |
| | 933 | mv -f $@T $@ |
| | 934 | %.v: %.v.i |
| | 935 | sed '/^[ ]*#/d;/^[ ]*$$/d' $< > $@T |
| | 936 | mv -f $@T $@ |
| | 937 | |
| | 938 | ifeq (yes, $(build-shared)) |
| | 939 | |
| | 940 | # To generate a header to support more than one ABI for different |
| | 941 | # architecture variants, the CPU/Makefile defines abi-variants to be a |
| | 942 | # list of names for those variants (e.g. 32 64), and, for each variant, |
| | 943 | # defines abi-$(variant)-condition to be the condition for those options |
| | 944 | # to use in a C #if condition. abi-includes may be defined to a list of |
| | 945 | # headers to include in the generated header, if the default does not |
| | 946 | # suffice. default-abi is defined to be the ABI for the current glibc |
| | 947 | # build. |
| | 948 | |
| | 949 | ifndef abi-includes |
| | 950 | abi-includes := bits/wordsize.h |
| | 951 | endif |
| | 952 | |
| | 953 | # Process the shlib-versions file, which tells us what shared library |
| | 954 | # version numbers to use when we install shared objects on this system. |
| | 955 | # We need to wait until $(subdirs) is complete. |
| | 956 | ifeq ($(sysd-sorted-done),t) |
| | 957 | -include $(common-objpfx)soversions.mk |
| | 958 | ifndef avoid-generated |
| | 959 | # This lets add-ons give more-specific matches that override defaults |
| | 960 | # in the top-level file. |
| | 961 | $(common-objpfx)shlib-versions.v.i: \ |
| | 962 | $(wildcard $(+sysdep_dirs:=/shlib-versions) \ |
| | 963 | $(subdir-srcdirs:=/shlib-versions)) \ |
| | 964 | $(..)shlib-versions |
| | 965 | |
| | 966 | $(common-objpfx)soversions.i: $(..)scripts/soversions.awk \ |
| | 967 | $(common-objpfx)shlib-versions.v |
| | 968 | $(AWK) -f $^ > $@T |
| | 969 | mv -f $@T $@ |
| | 970 | $(common-objpfx)soversions.mk: $(common-objpfx)soversions.i $(..)Makeconfig |
| | 971 | (while read which lib number setname; do \ |
| | 972 | eval seen_$$which=1; \ |
| | 973 | test x"$$which" = xDEFAULT || continue; \ |
| | 974 | case $$number in \ |
| | 975 | [0-9]*) echo "$$lib.so-version=.$$number"; \ |
| | 976 | echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\ |
| | 977 | *) echo "$$lib.so-version=$$number"; \ |
| | 978 | echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\ |
| | 979 | esac; \ |
| | 980 | done; \ |
| | 981 | echo soversions.mk-done = t;) < $< > $@T; exit 0 |
| | 982 | mv -f $@T $@ |
| | 983 | endif |
| | 984 | endif |
| | 985 | |
| | 986 | postclean-generated += soversions.mk soversions.i \ |
| | 987 | shlib-versions.v shlib-versions.v.i |
| | 988 | |
| | 989 | # The name under which the run-time dynamic linker is installed. |
| | 990 | # We are currently going for the convention that `/lib/ld.so.1' |
| | 991 | # names the SVR4/ELF ABI-compliant dynamic linker. |
| | 992 | ifndef rtld-installed-name |
| | 993 | ifdef ld.so-version |
| | 994 | rtld-installed-name = $(ld.so-version) |
| | 995 | else |
| | 996 | rtld-installed-name = ld.so.1 |
| | 997 | endif |
| | 998 | endif |
| | 999 | |
| | 1000 | ifndef rtld-version-installed-name |
| | 1001 | rtld-version-installed-name = ld-$(version).so |
| | 1002 | endif |
| | 1003 | |
| | 1004 | endif # build-shared |
| | 1005 | |
| | 1006 | |
| | 1007 | ifeq ($(build-shared),yes) |
| | 1008 | libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version) |
| | 1009 | else |
| | 1010 | libdl = $(common-objpfx)dlfcn/libdl.a |
| | 1011 | endif |
| | 1012 | |
| | 1013 | ifeq ($(build-shared),yes) |
| | 1014 | libm = $(common-objpfx)math/libm.so$(libm.so-version) |
| | 1015 | else |
| | 1016 | libm = $(common-objpfx)math/libm.a |
| | 1017 | endif |
| | 1018 | |
| | 1019 | # These are the subdirectories containing the library source. The order |
| | 1020 | # is more or less arbitrary. The sorting step will take care of the |
| | 1021 | # dependencies. |
| | 1022 | all-subdirs = csu assert ctype locale intl catgets math setjmp signal \ |
| | 1023 | stdlib stdio-common libio malloc string wcsmbs time dirent \ |
| | 1024 | grp pwd posix io termios resource misc socket sysvipc gmon \ |
| | 1025 | gnulib iconv iconvdata wctype manual shadow gshadow po argp \ |
| | 1026 | crypt localedata timezone rt conform debug \ |
| | 1027 | $(add-on-subdirs) dlfcn elf |
| | 1028 | |
| | 1029 | ifndef avoid-generated |
| | 1030 | # sysd-sorted itself will contain rules making the sysd-sorted target |
| | 1031 | # depend on Depend files. But if you just added a Depend file to an |
| | 1032 | # existing directory not in all-subdirs, then sysd-sorted needs to |
| | 1033 | # be regenerated, so it depends on existing $(sorted-subdirs:=/Depend) files. |
| | 1034 | all-Depend-files := $(wildcard $(sort \ |
| | 1035 | $(foreach dir,$(all-subdirs),\ |
| | 1036 | $(firstword $($(dir)-srcdir) \ |
| | 1037 | $(..)$(dir))/Depend) \ |
| | 1038 | $(sorted-subdirs:=/Depend))) |
| | 1039 | $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk \ |
| | 1040 | $(common-objpfx)config.make $(..)Makeconfig \ |
| | 1041 | $(wildcard $(sysdirs:=/Subdirs)) \ |
| | 1042 | $(all-Depend-files) |
| | 1043 | $(AWK) -f $< \ |
| | 1044 | -v subdirs='$(all-subdirs)' \ |
| | 1045 | -v srcpfx='$(..)' \ |
| | 1046 | $(filter %/Subdirs %/Depend,$^) > $@-tmp |
| | 1047 | mv -f $@-tmp $@ |
| | 1048 | $(all-Depend-files): ; |
| | 1049 | endif |
| | 1050 | |
| | 1051 | # This gives partial TARGET:SOURCE pattern pairs to have rules |
| | 1052 | # emitted into sysd-rules. A sysdeps Makeconfig fragment can |
| | 1053 | # add its own special object file prefix to this list with e.g. foo-%:% |
| | 1054 | # to have foo-*.? compiled from *.? using $(foo-CPPFLAGS). |
| | 1055 | sysd-rules-patterns := %:% rtld-%:rtld-% rtld-%:% m_%:s_% |
| | 1056 | |
| | 1057 | # Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here. |
| | 1058 | sysdep-makeconfigs := $(wildcard $(+sysdep_dirs:=/Makeconfig)) |
| | 1059 | ifneq (,$(sysdep-makeconfigs)) |
| | 1060 | include $(sysdep-makeconfigs) |
| | 1061 | endif |
| | 1062 | |
| | 1063 | # Compute just the target patterns. Makeconfig has set sysd-rules-patterns. |
| | 1064 | sysd-rules-targets := $(sort $(foreach p,$(sysd-rules-patterns),\ |
| | 1065 | $(firstword $(subst :, ,$p)))) |
| | 1066 | |
| | 1067 | # A sysdeps Makeconfig fragment may set libc-reentrant to yes. |
| | 1068 | ifeq (yes,$(libc-reentrant)) |
| | 1069 | defines += -D_LIBC_REENTRANT |
| | 1070 | |
| | 1071 | libio-mtsafe = -D_IO_MTSAFE_IO |
| | 1072 | endif |
| | 1073 | |
| | 1074 | # The name to give to a test in test results summaries. |
| | 1075 | test-name = $(strip $(patsubst %.out, %, $(patsubst $(common-objpfx)%, %, $@))) |
| | 1076 | |
| | 1077 | # Likewise, in XFAIL variable names. |
| | 1078 | test-xfail-name = $(strip $(patsubst %.out, %, $(patsubst $(objpfx)%, %, $@))) |
| | 1079 | |
| | 1080 | # Command to output a test status line (such as PASS: test-name). If |
| | 1081 | # test-xfail-$(test-xfail-name) has a nonempty value, the status will be |
| | 1082 | # XPASS or XFAIL rather than PASS or FAIL. |
| | 1083 | evaluate-test = $(..)scripts/evaluate-test.sh $(test-name) $$? \ |
| | 1084 | $(if $(test-xfail-$(test-xfail-name)),true,false) \ |
| | 1085 | $(if $(stop-on-test-failure),true,false) \ |
| | 1086 | > $(common-objpfx)$(test-name).test-result |
| | 1087 | |
| | 1088 | endif # Makeconfig not yet included |
| | 1089 | |
| | 1090 | # Local Variables: |
| | 1091 | # mode: makefile |
| | 1092 | # End: |
projects / thirdparty / glibc.git / blame_incremental