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1 | # Copyright (C) 1991-2024 Free Software Foundation, Inc. | |
2 | # Copyright The GNU Toolchain Authors. | |
3 | # This file is part of the GNU C Library. | |
4 | ||
5 | # The GNU C Library is free software; you can redistribute it and/or | |
6 | # modify it under the terms of the GNU Lesser General Public | |
7 | # License as published by the Free Software Foundation; either | |
8 | # version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | # The GNU C Library is distributed in the hope that it will be useful, | |
11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | # Lesser General Public License for more details. | |
14 | ||
15 | # You should have received a copy of the GNU Lesser General Public | |
16 | # License along with the GNU C Library; if not, see | |
17 | # <https://www.gnu.org/licenses/>. | |
18 | ||
19 | # | |
20 | # Makefile configuration options for the GNU C library. | |
21 | # | |
22 | ifneq (,) | |
23 | This makefile requires GNU Make. | |
24 | endif | |
25 | ||
26 | all: # Make this the default goal | |
27 | ||
28 | ifneq "$(origin +included-Makeconfig)" "file" | |
29 | ||
30 | +included-Makeconfig := yes | |
31 | ||
32 | ifdef subdir | |
33 | .. := ../ | |
34 | endif | |
35 | ||
36 | # $(common-objdir) is the place to put objects and | |
37 | # such that are not specific to a single subdir. | |
38 | ifdef objdir | |
39 | objpfx := $(patsubst %//,%/,$(objdir)/$(subdir)/) | |
40 | common-objpfx = $(objdir)/ | |
41 | common-objdir = $(objdir) | |
42 | else | |
43 | $(error objdir must be defined by the build-directory Makefile) | |
44 | endif | |
45 | ||
46 | # Did we request 'make -s' run? "yes" or "no". | |
47 | # Starting from make-4.4 MAKEFLAGS now contains long | |
48 | # options like '--shuffle'. To detect presence of 's' | |
49 | # we pick first word with short options. Long options | |
50 | # are guaranteed to come after whitespace. We use '-' | |
51 | # prefix to always have a word before long options | |
52 | # even if no short options were passed. | |
53 | # Typical MAKEFLAGS values to watch for: | |
54 | # "rs --shuffle=42" (silent) | |
55 | # " --shuffle" (not silent) | |
56 | ifeq ($(findstring s, $(firstword -$(MAKEFLAGS))),) | |
57 | silent-make := no | |
58 | else | |
59 | silent-make := yes | |
60 | endif | |
61 | ||
62 | # Root of the sysdeps tree. | |
63 | sysdep_dir := $(..)sysdeps | |
64 | export sysdep_dir := $(sysdep_dir) | |
65 | ||
66 | # Get the values defined by options to `configure'. | |
67 | include $(common-objpfx)config.make | |
68 | ||
69 | # What flags to give to sources which call user provided callbacks | |
70 | uses-callbacks = -fexceptions | |
71 | ||
72 | # What flags to give to tests which test stack alignment | |
73 | stack-align-test-flags = | |
74 | ||
75 | # Complete path to sysdep dirs. | |
76 | # `configure' writes a definition of `config-sysdirs' in `config.make'. | |
77 | sysdirs := $(foreach D,$(config-sysdirs),$(firstword $(filter /%,$D) $(..)$D)) | |
78 | ||
79 | +sysdep_dirs = $(sysdirs) | |
80 | ifdef objdir | |
81 | +sysdep_dirs := $(objdir) $(+sysdep_dirs) | |
82 | endif | |
83 | ||
84 | # Run config.status to update config.make and config.h. We don't show the | |
85 | # dependence of config.h to Make, because it is only touched when it | |
86 | # changes and so config.status would be run every time; the dependence of | |
87 | # config.make should suffice to force regeneration and re-exec, and the new | |
88 | # image will notice if config.h changed. | |
89 | $(common-objpfx)config.make: $(common-objpfx)config.status \ | |
90 | $(..)config.make.in $(..)config.h.in | |
91 | cd $(<D); $(SHELL) $(<F) | |
92 | ||
93 | # Find all the sysdeps configure fragments, to make sure we re-run | |
94 | # configure when any of them changes. | |
95 | $(common-objpfx)config.status: $(..)version.h $(..)configure \ | |
96 | $(foreach dir,$(sysdirs),\ | |
97 | $(wildcard $(dir)/Implies) \ | |
98 | $(patsubst %.ac,%,\ | |
99 | $(firstword $(wildcard \ | |
100 | $(addprefix $(dir)/,configure configure.ac))))) \ | |
101 | $(patsubst %.ac,%,\ | |
102 | $(wildcard $(..)sysdeps/*/preconfigure $(..)sysdeps/*/preconfigure.ac)) | |
103 | @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \ | |
104 | echo The GNU C library has not been configured. >&2; \ | |
105 | echo Run \`configure\' to configure it before building. >&2; \ | |
106 | echo Try \`configure --help\' for more details. >&2; \ | |
107 | exit 1; fi | |
108 | ||
109 | # We don't want CPPFLAGS to be exported to the command running configure. | |
110 | unexport CPPFLAGS | |
111 | ||
112 | # Get the user's configuration parameters. | |
113 | ifneq ($(wildcard $(..)configparms),) | |
114 | include $(..)configparms | |
115 | endif | |
116 | ifneq ($(objpfx),) | |
117 | ifneq ($(wildcard $(common-objpfx)configparms),) | |
118 | include $(common-objpfx)configparms | |
119 | endif | |
120 | endif | |
121 | \f | |
122 | #### | |
123 | #### These are the configuration variables. You can define values for | |
124 | #### the variables below in the file `configparms'. | |
125 | #### Do NOT edit this file. | |
126 | #### | |
127 | ||
128 | ||
129 | # Common prefix for machine-independent installation directories. | |
130 | ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value. | |
131 | prefix = /usr/local | |
132 | endif | |
133 | ||
134 | # Decide whether we shall build the programs or not. We always do this | |
135 | # unless the user tells us (in configparms) or we are building for a | |
136 | # standalone target. | |
137 | ifndef build-programs | |
138 | ifneq ($(config-os),none) | |
139 | build-programs=yes | |
140 | else | |
141 | build-programs=no | |
142 | endif | |
143 | endif | |
144 | ||
145 | # Common prefix for machine-dependent installation directories. | |
146 | ifeq ($(origin exec_prefix),undefined) | |
147 | exec_prefix = $(prefix) | |
148 | endif | |
149 | ||
150 | # Where to install the library and object files. | |
151 | ifndef libdir | |
152 | libdir = $(exec_prefix)/lib | |
153 | endif | |
154 | inst_libdir = $(install_root)$(libdir) | |
155 | ||
156 | # Where to install the shared library. | |
157 | ifndef slibdir | |
158 | slibdir = $(exec_prefix)/lib | |
159 | endif | |
160 | inst_slibdir = $(install_root)$(slibdir) | |
161 | ||
162 | # Where to install the dynamic linker. | |
163 | ifndef rtlddir | |
164 | rtlddir = $(slibdir) | |
165 | endif | |
166 | inst_rtlddir = $(install_root)$(rtlddir) | |
167 | ||
168 | # Prefix to put on files installed in $(libdir). For libraries `libNAME.a', | |
169 | # the prefix is spliced between `lib' and the name, so the linker switch | |
170 | # `-l$(libprefix)NAME' finds the library; for other files the prefix is | |
171 | # just prepended to the whole file name. | |
172 | ifeq ($(origin libprefix),undefined) | |
173 | libprefix = | |
174 | endif | |
175 | ||
176 | # Where to install the header files. | |
177 | ifndef includedir | |
178 | includedir = $(prefix)/include | |
179 | endif | |
180 | inst_includedir = $(install_root)$(includedir) | |
181 | ||
182 | # Where to install machine-independent data files. | |
183 | # These are the timezone database, and the locale database. | |
184 | ifndef datadir | |
185 | datadir = $(prefix)/share | |
186 | endif | |
187 | inst_datadir = $(install_root)$(datadir) | |
188 | ||
189 | # Where to install the timezone data files (which are machine-independent). | |
190 | ifndef zonedir | |
191 | zonedir = $(datadir)/zoneinfo | |
192 | endif | |
193 | inst_zonedir = $(install_root)$(zonedir) | |
194 | ||
195 | # Where to install the compiled binary locale archive and compiled | |
196 | # binary locale files. | |
197 | ifndef complocaledir | |
198 | complocaledir = $(libdir)/locale | |
199 | endif | |
200 | inst_complocaledir = $(install_root)$(complocaledir) | |
201 | ||
202 | # Where to install the message catalog data files (which are | |
203 | # machine-independent). | |
204 | ifndef localedir | |
205 | localedir = $(datadir)/locale | |
206 | endif | |
207 | inst_localedir = $(install_root)$(localedir) | |
208 | ||
209 | # Where to install the locale charmap source files. | |
210 | ifndef i18ndir | |
211 | i18ndir = $(datadir)/i18n | |
212 | endif | |
213 | inst_i18ndir = $(install_root)$(i18ndir) | |
214 | ||
215 | # Where to install the shared object for charset transformation. | |
216 | ifndef gconvdir | |
217 | gconvdir = $(libdir)/gconv | |
218 | endif | |
219 | inst_gconvdir = $(install_root)$(gconvdir) | |
220 | ||
221 | # Where to install programs. | |
222 | ifndef bindir | |
223 | bindir = $(exec_prefix)/bin | |
224 | endif | |
225 | inst_bindir = $(install_root)$(bindir) | |
226 | ||
227 | # Where to install internal programs. | |
228 | ifndef libexecdir | |
229 | libexecdir = $(exec_prefix)/libexec | |
230 | endif | |
231 | inst_libexecdir = $(install_root)$(libexecdir) | |
232 | ||
233 | # Where to install administrative programs. | |
234 | ifndef rootsbindir | |
235 | rootsbindir = $(exec_prefix)/sbin | |
236 | endif | |
237 | inst_rootsbindir = $(install_root)$(rootsbindir) | |
238 | ||
239 | ifndef sbindir | |
240 | sbindir = $(exec_prefix)/sbin | |
241 | endif | |
242 | inst_sbindir = $(install_root)$(sbindir) | |
243 | ||
244 | # Where to install the Info files. | |
245 | ifndef infodir | |
246 | infodir = $(prefix)/info | |
247 | endif | |
248 | inst_infodir = $(install_root)$(infodir) | |
249 | ||
250 | # Where to install audit libraries. | |
251 | ifndef auditdir | |
252 | auditdir = $(libdir)/audit | |
253 | endif | |
254 | inst_auditdir = $(install_root)$(auditdir) | |
255 | ||
256 | # Where to install default configuration files. These include the local | |
257 | # timezone specification and network data base files. | |
258 | ifndef sysconfdir | |
259 | sysconfdir = $(prefix)/etc | |
260 | endif | |
261 | inst_sysconfdir = $(install_root)$(sysconfdir) | |
262 | ||
263 | # Directory for the database files and Makefile for nss_db. | |
264 | ifndef vardbdir | |
265 | vardbdir = $(localstatedir)/db | |
266 | endif | |
267 | inst_vardbdir = $(install_root)$(vardbdir) | |
268 | ||
269 | # Where to install the "localtime" timezone file; this is the file whose | |
270 | # contents $(localtime) specifies. If this is a relative pathname, it is | |
271 | # relative to $(zonedir). It is a good idea to put this somewhere | |
272 | # other than there, so the zoneinfo directory contains only universal data, | |
273 | # localizing the configuration data elsewhere. | |
274 | ifndef localtime-file | |
275 | localtime-file = $(sysconfdir)/localtime | |
276 | endif | |
277 | ||
278 | # What to use for leap second specifications in compiling the default | |
279 | # timezone files. Set this to `/dev/null' for no leap second handling as | |
280 | # 1003.1 requires, or to `leapseconds' for proper leap second handling. | |
281 | # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'. | |
282 | # This variable determines the default: if it's `/dev/null', | |
283 | # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE. | |
284 | ifndef leapseconds | |
285 | leapseconds = /dev/null | |
286 | endif | |
287 | ||
288 | # What timezone's DST rules should be used when a POSIX-style TZ | |
289 | # environment variable doesn't specify any rules. For 1003.1 compliance | |
290 | # this timezone must use rules that are as U.S. federal law defines DST. | |
291 | # Run `make -C time echo-zonenames' to see a list of available zone names. | |
292 | # This setting can be changed with `zic -p TIMEZONE' at any time. | |
293 | # If you want POSIX.1 compatibility, use `America/New_York'. | |
294 | ifndef posixrules | |
295 | posixrules = America/New_York | |
296 | endif | |
297 | ||
298 | # Where to install the "posixrules" timezone file; this is file | |
299 | # whose contents $(posixrules) specifies. If this is a relative | |
300 | # pathname, it is relative to $(zonedir). | |
301 | ifndef posixrules-file | |
302 | posixrules-file = posixrules | |
303 | endif | |
304 | ||
305 | ||
306 | # Directory where your system's native header files live. | |
307 | # This is used on Unix systems to generate some GNU libc header files. | |
308 | ifndef sysincludedir | |
309 | sysincludedir = /usr/include | |
310 | endif | |
311 | ||
312 | ||
313 | # Commands to install files. | |
314 | ifndef INSTALL_DATA | |
315 | INSTALL_DATA = $(INSTALL) -m 644 | |
316 | endif | |
317 | ifndef INSTALL_SCRIPT | |
318 | INSTALL_SCRIPT = $(INSTALL) | |
319 | endif | |
320 | ifndef INSTALL_PROGRAM | |
321 | INSTALL_PROGRAM = $(INSTALL) | |
322 | endif | |
323 | ifndef INSTALL | |
324 | INSTALL = install | |
325 | endif | |
326 | ||
327 | ||
328 | # The name of the C compiler. | |
329 | # If you've got GCC, and it works, use it. | |
330 | ifeq ($(origin CC),default) | |
331 | CC := gcc | |
332 | endif | |
333 | ||
334 | # The name of the C compiler to use for compilations of programs to run on | |
335 | # the host that is building the library. If you set CC to a | |
336 | # cross-compiler, you must set this to the normal compiler. | |
337 | ifndef BUILD_CC | |
338 | BUILD_CC = $(CC) | |
339 | endif | |
340 | ||
341 | # Default flags to pass the C compiler. | |
342 | ifndef default_cflags | |
343 | ifeq ($(release),stable) | |
344 | default_cflags := -g -O2 | |
345 | else | |
346 | default_cflags := -g -O | |
347 | endif | |
348 | endif | |
349 | ||
350 | # Flags to pass the C compiler when assembling preprocessed assembly code | |
351 | # (`.S' files). | |
352 | ifndef asm-CPPFLAGS | |
353 | asm-CPPFLAGS = | |
354 | endif | |
355 | ||
356 | # Must be supported by the linker. | |
357 | no-whole-archive = -Wl,--no-whole-archive | |
358 | whole-archive = -Wl,--whole-archive | |
359 | ||
360 | # Installed name of the startup code. | |
361 | # The ELF convention is that the startfile is called crt1.o | |
362 | start-installed-name = crt1.o | |
363 | # Similar to crt1.o, but without _IO_stdin_used. | |
364 | start-name-2.0 = crt1-2.0.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 = $(start-installed-name) | |
369 | endif | |
370 | ||
371 | ifeq (yes,$(enable-static-pie)) | |
372 | # Link with rcrt1.o, instead of crt1.o, to call _dl_relocate_static_pie | |
373 | # to relocate static PIE. | |
374 | real-static-start-installed-name = r$(static-start-installed-name) | |
375 | else | |
376 | real-static-start-installed-name = $(static-start-installed-name) | |
377 | endif | |
378 | ||
379 | relro-LDFLAGS = -Wl,-z,relro | |
380 | LDFLAGS.so += $(relro-LDFLAGS) | |
381 | LDFLAGS-rtld += $(relro-LDFLAGS) | |
382 | ||
383 | # Linker options to enable and disable DT_RELR. | |
384 | ifeq ($(have-dt-relr),yes) | |
385 | dt-relr-ldflag = -Wl,-z,pack-relative-relocs | |
386 | no-dt-relr-ldflag = -Wl,-z,nopack-relative-relocs | |
387 | else | |
388 | dt-relr-ldflag = | |
389 | no-dt-relr-ldflag = | |
390 | endif | |
391 | ||
392 | ifeq (no,$(build-pie-default)) | |
393 | pie-default = $(no-pie-ccflag) | |
394 | else # build-pie-default | |
395 | pic-default = -DPIC | |
396 | # Compile libc.a and libc_p.a with -fPIE/-fpie for static PIE. | |
397 | pie-default = $(pie-ccflag) | |
398 | ||
399 | ifeq (yes,$(enable-static-pie)) | |
400 | static-pie-dt-relr-ldflag = $(dt-relr-ldflag) | |
401 | ifeq (yes,$(have-static-pie)) | |
402 | static-pie-ldflag = -static-pie | |
403 | else | |
404 | # Static PIE can't have dynamic relocations in read-only segments since | |
405 | # static PIE is mapped into memory by kernel. --eh-frame-hdr is needed | |
406 | # for PIE to support exception. | |
407 | static-pie-ldflag = -Wl,-pie,--no-dynamic-linker,--eh-frame-hdr,-z,text | |
408 | endif # have-static-pie | |
409 | endif # enable-static-pie | |
410 | endif # build-pie-default | |
411 | ||
412 | # If lazy relocations are disabled, add the -z now flag. Use | |
413 | # LDFLAGS-lib.so instead of LDFLAGS.so, to avoid adding the flag to | |
414 | # test modules. | |
415 | ifeq ($(bind-now),yes) | |
416 | LDFLAGS-lib.so += -Wl,-z,now | |
417 | # Extra flags for dynamically linked non-test main programs. | |
418 | link-extra-flags += -Wl,-z,now | |
419 | endif | |
420 | ||
421 | # Command to run after every final link (executable or shared object). | |
422 | # This is invoked with $(call after-link,...), so it should operate on | |
423 | # the file $1. This can be set to do some sort of post-processing on | |
424 | # binaries, or to perform some sort of static sanity check. | |
425 | ifndef after-link | |
426 | after-link = | |
427 | endif | |
428 | ||
429 | # Additional libraries to link into every test. | |
430 | link-extra-libs-tests = $(libsupport) | |
431 | ||
432 | # Command for linking PIE programs with the C library. | |
433 | ifndef +link-pie | |
434 | +link-pie-before-inputs = $(if $($(@F)-no-pie),$(no-pie-ldflag),-pie) \ | |
435 | $(if $($(@F)-no-dt-relr),$(no-dt-relr-ldflag),$(dt-relr-ldflag)) \ | |
436 | -Wl,-O1 -nostdlib -nostartfiles \ | |
437 | $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \ | |
438 | $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \ | |
439 | $(firstword $(CRT-$(@F)) $(csu-objpfx)S$(start-installed-name)) \ | |
440 | $(+preinit) $(+prectorS) | |
441 | +link-pie-before-libc = -o $@ $(+link-pie-before-inputs) \ | |
442 | $(filter-out $(addprefix $(csu-objpfx),start.o \ | |
443 | S$(start-installed-name))\ | |
444 | $(+preinit) $(link-extra-libs) \ | |
445 | $(common-objpfx)libc% $(+postinit),$^) \ | |
446 | $(link-extra-libs) | |
447 | +link-pie-after-libc = $(+postctorS) $(+postinit) | |
448 | define +link-pie | |
449 | $(CC) $(link-libc-rpath-link) $(+link-pie-before-libc) $(rtld-LDFLAGS) \ | |
450 | $(link-extra-flags) $(link-libc) $(+link-pie-after-libc) | |
451 | $(call after-link,$@) | |
452 | endef | |
453 | define +link-pie-tests | |
454 | $(CC) $(+link-pie-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \ | |
455 | $(+link-pie-after-libc) | |
456 | $(call after-link,$@) | |
457 | endef | |
458 | define +link-pie-printers-tests | |
459 | $(CC) $(+link-pie-before-libc) $(built-rtld-LDFLAGS) \ | |
460 | $(link-libc-printers-tests) $(+link-pie-after-libc) | |
461 | $(call after-link,$@) | |
462 | endef | |
463 | endif | |
464 | # Command for statically linking programs with the C library. | |
465 | ifndef +link-static | |
466 | +link-static-before-inputs = -nostdlib -nostartfiles -static \ | |
467 | $(if $($(@F)-no-pie),$(no-pie-ldflag),$(static-pie-ldflag)) \ | |
468 | $(if $($(@F)-no-dt-relr),$(no-dt-relr-ldflag),$(static-pie-dt-relr-ldflag)) \ | |
469 | $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \ | |
470 | $(firstword $(CRT-$(@F)) $(csu-objpfx)$(real-static-start-installed-name)) \ | |
471 | $(+preinit) $(+prectorT) | |
472 | +link-static-before-libc = -o $@ $(+link-static-before-inputs) \ | |
473 | $(filter-out $(addprefix $(csu-objpfx),start.o \ | |
474 | $(start-installed-name))\ | |
475 | $(+preinit) $(link-extra-libs-static) \ | |
476 | $(common-objpfx)libc% $(+postinit),$^) \ | |
477 | $(link-extra-libs-static) | |
478 | +link-static-after-libc = $(+postctorT) $(+postinit) | |
479 | define +link-static | |
480 | $(CC) $(+link-static-before-libc) $(link-extra-flags) $(link-libc-static) \ | |
481 | $(+link-static-after-libc) | |
482 | $(call after-link,$@) | |
483 | endef | |
484 | define +link-static-tests | |
485 | $(CC) $(+link-static-before-libc) $(link-libc-static-tests) \ | |
486 | $(+link-static-after-libc) | |
487 | $(call after-link,$@) | |
488 | endef | |
489 | endif | |
490 | # Commands for linking programs with the C library. | |
491 | ifndef +link | |
492 | ifeq (yes,$(build-shared)) | |
493 | ifeq (yes,$(cc-pie-default)) | |
494 | no-pie-ldflag = -no-pie | |
495 | endif | |
496 | ifeq (yes,$(build-pie-default)) | |
497 | +link = $(+link-pie) | |
498 | +link-tests = $(+link-pie-tests) | |
499 | +link-tests-before-inputs = $(+link-pie-before-inputs) $(rtld-tests-LDFLAGS) | |
500 | +link-tests-after-inputs = $(link-libc-tests) $(+link-pie-after-libc) | |
501 | +link-printers-tests = $(+link-pie-printers-tests) | |
502 | else # not build-pie-default | |
503 | +link-before-inputs = -nostdlib -nostartfiles $(no-pie-ldflag) \ | |
504 | $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \ | |
505 | $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \ | |
506 | $(firstword $(CRT-$(@F)) $(csu-objpfx)$(start-installed-name)) \ | |
507 | $(+preinit) $(+prector) | |
508 | +link-before-libc = -o $@ $(+link-before-inputs) \ | |
509 | $(filter-out $(addprefix $(csu-objpfx),start.o \ | |
510 | $(start-installed-name))\ | |
511 | $(+preinit) $(link-extra-libs) \ | |
512 | $(common-objpfx)libc% $(+postinit),$^) \ | |
513 | $(link-extra-libs) | |
514 | +link-after-libc = $(+postctor) $(+postinit) | |
515 | define +link | |
516 | $(CC) $(link-libc-rpath-link) $(+link-before-libc) $(rtld-LDFLAGS) \ | |
517 | $(link-extra-flags) $(link-libc) $(+link-after-libc) | |
518 | $(call after-link,$@) | |
519 | endef | |
520 | +link-tests-before-inputs = $(+link-before-inputs) $(rtld-tests-LDFLAGS) | |
521 | +link-tests-after-inputs = $(link-libc-tests) $(+link-after-libc) | |
522 | define +link-tests | |
523 | $(CC) $(+link-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \ | |
524 | $(+link-after-libc) | |
525 | $(call after-link,$@) | |
526 | endef | |
527 | define +link-printers-tests | |
528 | $(CC) $(+link-before-libc) $(built-rtld-LDFLAGS) $(link-libc-printers-tests) \ | |
529 | $(+link-after-libc) | |
530 | $(call after-link,$@) | |
531 | endef | |
532 | endif # build-pie-default | |
533 | else # build-static | |
534 | +link = $(+link-static) | |
535 | +link-tests = $(+link-static-tests) | |
536 | +link-tests-before-inputs = $(+link-static-before-inputs) | |
537 | +link-tests-after-inputs = $(link-libc-static-tests) $(+link-static-after-libc) | |
538 | +link-printers-tests = $(+link-static-tests) | |
539 | endif # build-shared | |
540 | endif # +link | |
541 | ||
542 | # Command for linking test programs with crt1.o from glibc 2.0. | |
543 | +link-2.0-before-inputs = -nostdlib -nostartfiles $(no-pie-ldflag) \ | |
544 | $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \ | |
545 | $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \ | |
546 | $(firstword $(CRT-$(@F)) $(csu-objpfx)$(start-name-2.0)) \ | |
547 | $(+preinit) $(+prector) | |
548 | +link-2.0-before-libc = -o $@ $(+link-2.0-before-inputs) \ | |
549 | $(filter-out $(addprefix $(csu-objpfx),start.o \ | |
550 | $(start-name-2.0))\ | |
551 | $(+preinit) $(link-extra-libs) \ | |
552 | $(common-objpfx)libc% $(+postinit),$^) \ | |
553 | $(link-extra-libs) | |
554 | +link-after-libc = $(+postctor) $(+postinit) | |
555 | define +link-2.0-tests | |
556 | $(CC) $(+link-2.0-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \ | |
557 | $(+link-after-libc) | |
558 | $(call after-link,$@) | |
559 | endef | |
560 | ||
561 | # The pretty printer test programs need to be compiled without optimizations | |
562 | # so they won't confuse gdb. We could use either the 'GCC optimize' pragma | |
563 | # or the 'optimize' function attribute to achieve this; however, at least on | |
564 | # ARM, gcc always produces different debugging symbols when invoked with | |
565 | # a -O greater than 0 than when invoked with -O0, regardless of anything else | |
566 | # we're using to suppress optimizations. Therefore, we need to explicitly pass | |
567 | # -O0 to it through CFLAGS. As a result, any fortification needs to be disabled | |
568 | # as it needs -O greater than 0. | |
569 | # Additionally, the build system will try to -include $(common-objpfx)/config.h | |
570 | # when compiling the tests, which will throw an error if some special macros | |
571 | # (such as __OPTIMIZE__ and IS_IN_build) aren't defined. To avoid this, we | |
572 | # tell gcc to define IS_IN_build. | |
573 | CFLAGS-printers-tests := -O0 -ggdb3 -DIS_IN_build $(no-fortify-source) | |
574 | ||
575 | ifeq (yes,$(build-shared)) | |
576 | # These indicate whether to link using the built ld.so or the installed one. | |
577 | installed-rtld-LDFLAGS = -Wl,-dynamic-linker=$(rtlddir)/$(rtld-installed-name) | |
578 | built-rtld-LDFLAGS = -Wl,-dynamic-linker=$(elf-objpfx)ld.so | |
579 | ||
580 | ifndef rtld-LDFLAGS | |
581 | rtld-LDFLAGS = $(installed-rtld-LDFLAGS) | |
582 | endif | |
583 | ||
584 | ifndef rtld-tests-LDFLAGS | |
585 | ifeq (yes,$(build-hardcoded-path-in-tests)) | |
586 | rtld-tests-LDFLAGS = $(built-rtld-LDFLAGS) | |
587 | else | |
588 | rtld-tests-LDFLAGS = $(installed-rtld-LDFLAGS) | |
589 | endif # build-hardcoded-path-in-tests | |
590 | endif # rtld-tests-LDFLAGS | |
591 | ||
592 | endif # build-shared | |
593 | ||
594 | ifndef link-libc | |
595 | ifeq (yes,$(build-shared)) | |
596 | # We need the versioned name of libc.so in the deps of $(others) et al | |
597 | # so that the symlink to libc.so is created before anything tries to | |
598 | # run the linked programs. | |
599 | link-libc-rpath = -Wl,-rpath=$(rpath-link) | |
600 | link-libc-rpath-link = -Wl,-rpath-link=$(rpath-link) | |
601 | ||
602 | # For programs which are not tests, $(link-libc-rpath-link) is added | |
603 | # directly in $(+link), $(+link-pie) above, so that -Wl,-rpath-link | |
604 | # comes before the expansion of LDLIBS-* and affects libraries added | |
605 | # there. For shared objects, -Wl,-rpath-link is added via | |
606 | # $(build-shlib-helper) and $(build-module-helper) in Makerules (also | |
607 | # before the expansion of LDLIBS-* variables). | |
608 | ||
609 | # Tests use -Wl,-rpath instead of -Wl,-rpath-link for | |
610 | # build-hardcoded-path-in-tests. Add -Wl,--disable-new-dtags to force | |
611 | # DT_RPATH instead of DT_RUNPATH which only applies to DT_NEEDED entries | |
612 | # in the executable and doesn't applies to DT_NEEDED entries in shared | |
613 | # libraries which are loaded via DT_NEEDED entries in the executable. | |
614 | ifeq (yes,$(build-hardcoded-path-in-tests)) | |
615 | link-libc-tests-rpath-link = $(link-libc-rpath) -Wl,--disable-new-dtags | |
616 | link-test-modules-rpath-link = $(link-libc-rpath) -Wl,--disable-new-dtags | |
617 | else | |
618 | link-libc-tests-rpath-link = $(link-libc-rpath-link) | |
619 | link-test-modules-rpath-link = | |
620 | endif # build-hardcoded-path-in-tests | |
621 | ||
622 | link-libc-between-gnulib = $(common-objpfx)libc.so$(libc.so-version) \ | |
623 | $(common-objpfx)$(patsubst %,$(libtype.oS),c) \ | |
624 | -Wl,--as-needed $(elf-objpfx)ld.so \ | |
625 | -Wl,--no-as-needed | |
626 | link-libc = $(link-libc-between-gnulib) $(gnulib) | |
627 | ||
628 | link-libc-tests-after-rpath-link = $(gnulib-tests) $(link-libc-between-gnulib) $(gnulib-tests) | |
629 | link-libc-tests = $(link-libc-tests-rpath-link) \ | |
630 | $(link-libc-tests-after-rpath-link) | |
631 | # Pretty printer test programs always require rpath instead of rpath-link. | |
632 | link-libc-printers-tests = $(link-libc-rpath) \ | |
633 | $(link-libc-tests-after-rpath-link) | |
634 | ||
635 | # This is how to find at build-time things that will be installed there. | |
636 | rpath-dirs = math elf dlfcn nss nis rt resolv mathvec support | |
637 | rpath-link = \ | |
638 | $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%))) | |
639 | else # build-static | |
640 | link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib) | |
641 | link-libc-tests = $(common-objpfx)libc.a $(otherlibs) $(gnulib-tests) $(common-objpfx)libc.a $(gnulib-tests) | |
642 | endif # build-shared | |
643 | endif # link-libc | |
644 | ||
645 | # Differences in the linkers on the various platforms. | |
646 | LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN' | |
647 | LDFLAGS-soname-fname = -Wl,-soname,$(@F) | |
648 | LDFLAGS-rdynamic = -rdynamic | |
649 | LDFLAGS-Bsymbolic = -Bsymbolic | |
650 | ||
651 | # Choose the default search path for the dynamic linker based on | |
652 | # where we will install libraries. | |
653 | ifneq ($(libdir),$(slibdir)) | |
654 | default-rpath = $(slibdir):$(libdir) | |
655 | else | |
656 | default-rpath = $(libdir) | |
657 | endif | |
658 | ||
659 | ifndef link-extra-libs | |
660 | link-extra-libs = $(LDLIBS-$(@F)) | |
661 | link-extra-libs-static = $(link-extra-libs) | |
662 | endif | |
663 | ||
664 | # The static libraries. | |
665 | link-libc-static = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib) -Wl,--end-group | |
666 | link-libc-static-tests = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib-tests) -Wl,--end-group | |
667 | ||
668 | # How to link against libgcc. Some libgcc functions, such as those | |
669 | # for "long long" arithmetic or software floating point, can always be | |
670 | # built without use of C library headers and do not have any global | |
671 | # state so can safely be linked statically into any executable or | |
672 | # shared library requiring them; these functions are in libgcc.a. | |
673 | # Other functions, relating to exception handling, may require C | |
674 | # library headers to build and it may not be safe to have more than | |
675 | # one copy of them in a process; these functions are only in | |
676 | # libgcc_s.so and libgcc_eh.a. | |
677 | # | |
678 | # To avoid circular dependencies when bootstrapping, it is desirable | |
679 | # to avoid use of libgcc_s and libgcc_eh in building glibc. Where any | |
680 | # glibc functionality (in particular, thread cancellation) requires | |
681 | # exception handling, this is implemented through dlopen of libgcc_s | |
682 | # to avoid unnecessary dependencies on libgcc_s by programs not using | |
683 | # that functionality; executables built with glibc do not use | |
684 | # exception handling other than through thread cancellation. | |
685 | # | |
686 | # Undefined references to functions from libgcc_eh or libgcc_s may | |
687 | # arise for code built with -fexceptions. In the case of statically | |
688 | # linked programs installed by glibc, unwinding will never actually | |
689 | # occur at runtime and the use of elf/static-stubs.c to resolve these | |
690 | # references is safe. In the case of statically linked test programs | |
691 | # and test programs built with -fexceptions, unwinding may occur in | |
692 | # some cases and it is preferable to link with libgcc_eh or libgcc_s | |
693 | # so that the testing is as similar as possible to how programs will | |
694 | # be built with the installed glibc. | |
695 | # | |
696 | # Some architectures have architecture-specific systems for exception | |
697 | # handling that may involve undefined references to | |
698 | # architecture-specific functions. On those architectures, | |
699 | # gnulib-arch and static-gnulib-arch may be defined in sysdeps | |
700 | # makefiles to use additional libraries for linking executables and | |
701 | # shared libraries built by glibc. | |
702 | ifndef gnulib | |
703 | ifneq ($(have-cc-with-libunwind),yes) | |
704 | libunwind = | |
705 | else | |
706 | libunwind = -lunwind | |
707 | endif | |
708 | libgcc_eh := -Wl,--as-needed -lgcc_s $(libunwind) -Wl,--no-as-needed | |
709 | gnulib-arch = | |
710 | gnulib = -lgcc $(gnulib-arch) | |
711 | gnulib-tests := -lgcc $(libgcc_eh) | |
712 | static-gnulib-arch = | |
713 | # By default, elf/static-stubs.o, instead of -lgcc_eh, is used to | |
714 | # statically link programs. When --disable-shared is used, we use | |
715 | # -lgcc_eh since elf/static-stubs.o isn't sufficient. | |
716 | ifeq (yes,$(build-shared)) | |
717 | static-gnulib = -lgcc $(static-gnulib-arch) | |
718 | else | |
719 | static-gnulib = -lgcc -lgcc_eh $(static-gnulib-arch) | |
720 | endif | |
721 | static-gnulib-tests := -lgcc -lgcc_eh $(libunwind) | |
722 | libc.so-gnulib := -lgcc | |
723 | endif | |
724 | +preinit = $(addprefix $(csu-objpfx),crti.o) | |
725 | +postinit = $(addprefix $(csu-objpfx),crtn.o) | |
726 | +prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbegin.o` | |
727 | +postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o` | |
728 | # Variants of the two previous definitions for linking PIE programs. | |
729 | +prectorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginS.o` | |
730 | +postctorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtendS.o` | |
731 | # Variants of the two previous definitions for statically linking programs. | |
732 | static-prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginT.o` | |
733 | static-postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o` | |
734 | ifeq (yes,$(enable-static-pie)) | |
735 | # Static PIE must use PIE variants. | |
736 | +prectorT = $(if $($(@F)-no-pie),$(static-prector),$(+prectorS)) | |
737 | +postctorT = $(if $($(@F)-no-pie),$(static-postctor),$(+postctorS)) | |
738 | else | |
739 | +prectorT = $(static-prector) | |
740 | +postctorT =$(static-postctor) | |
741 | endif | |
742 | csu-objpfx = $(common-objpfx)csu/ | |
743 | elf-objpfx = $(common-objpfx)elf/ | |
744 | ||
745 | # A command that, prepended to the name and arguments of a program, | |
746 | # and run on the build system, causes that program with those | |
747 | # arguments to be run on the host for which the library is built. | |
748 | ifndef test-wrapper | |
749 | test-wrapper = | |
750 | endif | |
751 | # Likewise, but the name of the program is preceded by | |
752 | # <variable>=<value> assignments for environment variables. | |
753 | ifndef test-wrapper-env | |
754 | test-wrapper-env = $(test-wrapper) env | |
755 | endif | |
756 | # Likewise, but the program's environment will be empty except for any | |
757 | # explicit <variable>=<value> assignments preceding the program name. | |
758 | ifndef test-wrapper-env-only | |
759 | test-wrapper-env-only = $(test-wrapper) env -i | |
760 | endif | |
761 | ||
762 | # Whether to run test programs built for the library's host system. | |
763 | ifndef run-built-tests | |
764 | ifeq (yes|,$(cross-compiling)|$(test-wrapper)) | |
765 | run-built-tests = no | |
766 | else | |
767 | run-built-tests = yes | |
768 | endif | |
769 | endif | |
770 | ||
771 | # Whether to build the static math tests | |
772 | ifndef build-math-static-tests | |
773 | build-math-static-tests = no | |
774 | endif | |
775 | ||
776 | # Whether to stop immediately when a test fails. Nonempty means to | |
777 | # stop, empty means not to stop. | |
778 | ifndef stop-on-test-failure | |
779 | stop-on-test-failure = | |
780 | endif | |
781 | ||
782 | # How to run a program we just linked with our library. | |
783 | # The program binary is assumed to be $(word 2,$^). | |
784 | built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^)) | |
785 | rtld-prefix = $(elf-objpfx)$(rtld-installed-name) \ | |
786 | --library-path \ | |
787 | $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) | |
788 | ifeq (yes,$(build-shared)) | |
789 | comma = , | |
790 | sysdep-library-path = \ | |
791 | $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\ | |
792 | $(filter -Wl$(comma)-rpath-link=%,\ | |
793 | $(sysdep-LDFLAGS))))) | |
794 | # $(run-via-rtld-prefix) is a command that, when prepended to the name | |
795 | # of a program built with the newly built library, produces a command | |
796 | # that, executed on the host for which the library is built, runs that | |
797 | # program. For tests listed in tests-static or xtests-static, it is | |
798 | # empty. | |
799 | run-via-rtld-prefix = \ | |
800 | $(if $(strip $(filter $(notdir $(built-program-file)), \ | |
801 | $(tests-static) $(xtests-static))),, $(rtld-prefix)) | |
802 | else | |
803 | run-via-rtld-prefix = | |
804 | endif | |
805 | # $(run-program-env) is the default environment variable settings to | |
806 | # use when running a program built with the newly built library. | |
807 | run-program-env = GCONV_PATH=$(common-objpfx)iconvdata \ | |
808 | LOCPATH=$(common-objpfx)localedata LC_ALL=C | |
809 | # $(run-program-prefix) is a command that, when prepended to the name | |
810 | # of a program built with the newly built library, produces a command | |
811 | # that, executed on the build system on which "make" is run, runs that | |
812 | # program. $(run-program-prefix-before-env) and | |
813 | # $(run-program-prefix-after-env) are similar, but separate parts | |
814 | # before and after a list of environment variables. | |
815 | run-program-prefix-before-env = $(test-wrapper-env) | |
816 | run-program-prefix-after-env = $(run-via-rtld-prefix) | |
817 | run-program-prefix = $(run-program-prefix-before-env) $(run-program-env) \ | |
818 | $(run-program-prefix-after-env) | |
819 | # $(built-program-cmd) is a command that, executed on the build system | |
820 | # on which "make" is run, runs the newly built program that is the | |
821 | # second dependency of the makefile target in which | |
822 | # $(built-program-cmd) is used. $(built-program-cmd-before-env) and | |
823 | # $(built-program-cmd-after-env) are similar, before and after a list | |
824 | # of environment variables. | |
825 | built-program-cmd-before-env = $(test-wrapper-env) | |
826 | built-program-cmd-after-env = $(run-via-rtld-prefix) $(built-program-file) | |
827 | built-program-cmd = $(built-program-cmd-before-env) $(run-program-env) \ | |
828 | $(built-program-cmd-after-env) | |
829 | # $(host-built-program-cmd) is a command that, executed on the host | |
830 | # for which the library is built, runs the newly built program that is | |
831 | # the second dependency of the makefile target in which | |
832 | # $(host-built-program-cmd) is used. | |
833 | host-built-program-cmd = $(run-via-rtld-prefix) $(built-program-file) | |
834 | # $(ld-library-path) is the common content to be set in LD_LIBRARY_PATH | |
835 | # for running static binaries that may load dynamic objects. | |
836 | ld-library-path = $(objpfx):$(common-objpfx)$(addprefix :,$(sysdep-ld-library-path)) | |
837 | ||
838 | ifndef LD | |
839 | LD := ld -X | |
840 | endif | |
841 | ||
842 | # $(test-via-rtld-prefix) is a command that, when prepended to the name | |
843 | # of a test program built with the newly built library, produces a command | |
844 | # that, executed on the host for which the library is built, runs that | |
845 | # program. For tests listed in tests-static or xtests-static as well | |
846 | # as when test programs are hardcoded to the newly built libraries, it | |
847 | # is empty. | |
848 | ||
849 | # $(test-program-prefix) is a command that, when prepended to the name | |
850 | # of a test program built with the newly built library, produces a command | |
851 | # that, executed on the build system on which "make" is run, runs that | |
852 | # test program. $(test-program-prefix-before-env) and | |
853 | # $(test-program-prefix-after-env) are similar, before and after a | |
854 | # list of environment variables. | |
855 | ||
856 | # $(test-program-cmd) is a command that, executed on the build system | |
857 | # on which "make" is run, runs the newly built test program that is the | |
858 | # second dependency of the makefile target in which | |
859 | # $(test-program-cmd) is used. $(test-program-cmd-before-env) and | |
860 | # $(test-program-cmd-after-env) are similar, before and after a list | |
861 | # of environment variables. | |
862 | ||
863 | # $(host-test-program-cmd) is a command that, executed on the host | |
864 | # for which the library is built, runs the newly built test program that | |
865 | # is the second dependency of the makefile target in which | |
866 | # $(host-test-program-cmd) is used. | |
867 | ||
868 | ifeq (yes,$(build-hardcoded-path-in-tests)) | |
869 | test-via-rtld-prefix = | |
870 | test-program-prefix-before-env = $(test-wrapper-env) | |
871 | test-program-prefix-after-env = | |
872 | test-program-prefix = $(test-program-prefix-before-env) $(run-program-env) \ | |
873 | $(test-program-prefix-after-env) | |
874 | test-program-cmd-before-env = $(test-wrapper-env) | |
875 | test-program-cmd-after-env = $(built-program-file) | |
876 | test-program-cmd = $(test-program-cmd-before-env) $(run-program-env) \ | |
877 | $(test-program-cmd-after-env) | |
878 | host-test-program-cmd = $(built-program-file) | |
879 | else | |
880 | test-via-rtld-prefix = $(run-via-rtld-prefix) | |
881 | test-program-prefix-before-env = $(run-program-prefix-before-env) | |
882 | test-program-prefix-after-env = $(run-program-prefix-after-env) | |
883 | test-program-prefix = $(run-program-prefix) | |
884 | test-program-cmd-before-env = $(built-program-cmd-before-env) | |
885 | test-program-cmd-after-env = $(built-program-cmd-after-env) | |
886 | test-program-cmd = $(built-program-cmd) | |
887 | host-test-program-cmd = $(host-built-program-cmd) | |
888 | endif | |
889 | ||
890 | # Extra flags to pass to GCC. | |
891 | +gccwarn := -Wall -Wwrite-strings -Wundef $(cc-option-wimplicit-fallthrough) | |
892 | ifeq ($(enable-werror),yes) | |
893 | +gccwarn += -Werror | |
894 | endif | |
895 | +gccwarn-c = -Wstrict-prototypes -Wold-style-definition | |
896 | ||
897 | # We do not depend on the address of constants in different files to be | |
898 | # actually different, so allow the compiler to merge them all. | |
899 | +merge-constants = -fmerge-all-constants | |
900 | ||
901 | # We have to assume that glibc functions are called in any rounding | |
902 | # mode and also change the rounding mode in a few functions. So, | |
903 | # disable any optimization that assume default rounding mode. | |
904 | +math-flags = -frounding-math | |
905 | ||
906 | # Logically only "libnldbl", "nonlib" and "testsuite" should be using | |
907 | # -fno-math-errno. However due to GCC bug #88576, only "libm" and | |
908 | # "libmvec" can use -fno-math-errno. | |
909 | +extra-math-flags = $(if $(filter libmvec libm,$(in-module)),\ | |
910 | -fno-math-errno,-fmath-errno) | |
911 | ||
912 | # Use 64 bit time_t support for installed programs | |
913 | installed-modules = nonlib nscd ldconfig locale_programs \ | |
914 | iconvprogs libnss_files libnss_compat libnss_db libnss_hesiod \ | |
915 | libutil libpcprofile libnsl | |
916 | +extra-time-flags = $(if $(filter $(installed-modules),\ | |
917 | $(in-module)),-D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64) | |
918 | ||
919 | # We might want to compile with some stack-protection flag. | |
920 | ifneq ($(stack-protector),) | |
921 | +stack-protector=$(stack-protector) | |
922 | endif | |
923 | ||
924 | # Some routines are unsafe to build with stack-protection since they're called | |
925 | # before the stack check guard is set up. Provide a way to disable stack | |
926 | # protector. The first argument is the extension (.o, .os, .oS) and the second | |
927 | # is a list of routines that this path should be applied to. | |
928 | define elide-stack-protector | |
929 | $(if $(filter $(@F),$(patsubst %,%$(1),$(2))), $(no-stack-protector)) | |
930 | endef | |
931 | ||
932 | # We might want to compile with fortify-source | |
933 | ifneq ($(fortify-source),) | |
934 | +fortify-source=$(fortify-source) | |
935 | endif | |
936 | ||
937 | # Some routine can't be fortified like the ones used by fortify | |
938 | define elide-fortify-source | |
939 | $(if $(filter $(@F),$(patsubst %,%$(1),$(2))), $(no-fortify-source)) | |
940 | endef | |
941 | ||
942 | # The program that makes Emacs-style TAGS files. | |
943 | ETAGS := etags | |
944 | ||
945 | # The `xgettext' program for producing .pot files from sources. | |
946 | ifndef XGETTEXT | |
947 | XGETTEXT = xgettext | |
948 | endif | |
949 | ||
950 | # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and | |
951 | # perhaps others) to preprocess assembly code in some cases. | |
952 | M4 = m4 | |
953 | ||
954 | # To force installation of files even if they are older than the | |
955 | # installed files. This variable is included in the dependency list | |
956 | # of all installation targets. | |
957 | ifeq ($(force-install),yes) | |
958 | +force = force-install | |
959 | else | |
960 | +force = | |
961 | endif | |
962 | ||
963 | #### | |
964 | #### End of configuration variables. | |
965 | #### | |
966 | \f | |
967 | # This tells some versions of GNU make before 3.63 not to export all variables. | |
968 | .NOEXPORT: | |
969 | ||
970 | # We want to echo the commands we're running without | |
971 | # umpteen zillion filenames along with it (we use `...' instead) | |
972 | # but we don't want this echoing done when the user has said | |
973 | # he doesn't want to see commands echoed by using -s. | |
974 | ifeq ($(silent-make),yes) # if -s | |
975 | +cmdecho := echo >/dev/null | |
976 | else # not -s | |
977 | +cmdecho := echo | |
978 | endif # -s | |
979 | ||
980 | # These are the flags given to the compiler to tell | |
981 | # it what sort of optimization and/or debugging output to do. | |
982 | ifndef +cflags | |
983 | # If `CFLAGS' was defined, use that. | |
984 | ifdef CFLAGS | |
985 | +cflags := $(filter-out -I%,$(CFLAGS)) | |
986 | endif # CFLAGS | |
987 | endif # +cflags | |
988 | ||
989 | # If none of the above worked, default to "-g -O". | |
990 | ifeq "$(strip $(+cflags))" "" | |
991 | +cflags := $(default_cflags) | |
992 | endif # $(+cflags) == "" | |
993 | ||
994 | # Force building with -fno-common because hidden_def, compat_symbol | |
995 | # and other constructs do not work for common symbols (and would | |
996 | # otherwise require specifying __attribute__ ((nocommon)) on a | |
997 | # case-by-case basis). | |
998 | +cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants) $(+math-flags) \ | |
999 | $(+stack-protector) -fno-common | |
1000 | +gcc-nowarn := -w | |
1001 | ||
1002 | # We must filter out elf because the early bootstrap of the dynamic loader | |
1003 | # cannot be fortified. Likewise we exclude dlfcn because it is entangled | |
1004 | # with the loader. We must filter out csu because early startup, like the | |
1005 | # loader, cannot be fortified. Lastly debug is the fortification routines | |
1006 | # themselves and they cannot be fortified. | |
1007 | do-fortify = $(filter-out elf dlfcn csu debug,$(subdir)) | |
1008 | ifeq ($(do-fortify),$(subdir)) | |
1009 | +cflags += $(+fortify-source) | |
1010 | else | |
1011 | +cflags += $(no-fortify-source) | |
1012 | endif | |
1013 | ||
1014 | # Each sysdeps directory can contain header files that both will be | |
1015 | # used to compile and will be installed. Each can also contain an | |
1016 | # include/ subdirectory, whose header files will be used to compile | |
1017 | # but will not be installed, and will take precedence over the | |
1018 | # installed files. This mirrors the top-level include/ subdirectory. | |
1019 | +sysdep-includes := $(foreach dir,$(+sysdep_dirs),\ | |
1020 | $(addprefix -I,$(wildcard $(dir)/include) $(dir))) | |
1021 | ||
1022 | # These are flags given to the C compiler to tell it to look for | |
1023 | # include files (including ones given in angle brackets) in the parent | |
1024 | # library source directory, in the include directory, and in the | |
1025 | # current directory. | |
1026 | +includes = -I$(..)include $(if $(subdir),$(objpfx:%/=-I%)) \ | |
1027 | $(+sysdep-includes) $(includes) \ | |
1028 | $(patsubst %/,-I%,$(..)) $(libio-include) -I. $(sysincludes) | |
1029 | ||
1030 | # Since libio has several internal header files, we use a -I instead | |
1031 | # of many little headers in the include directory. | |
1032 | libio-include = -I$(..)libio | |
1033 | ||
1034 | # List of non-library modules that we build. | |
1035 | built-modules = iconvprogs iconvdata ldconfig libmemusage \ | |
1036 | libpcprofile librpcsvc locale-programs \ | |
1037 | memusagestat nonlib nscd extramodules libnldbl libsupport \ | |
1038 | testsuite testsuite-internal | |
1039 | ||
1040 | in-module = $(subst -,_,$(firstword $(libof-$(basename $(@F))) \ | |
1041 | $(libof-$(<F)) \ | |
1042 | $(libof-$(@F)) \ | |
1043 | libc)) | |
1044 | ||
1045 | # Build ld.so, libc.so and libpthread.so with -ftls-model=initial-exec | |
1046 | tls-model = $(if $(filter libpthread rtld \ | |
1047 | libc,$(in-module)),-ftls-model=initial-exec,) | |
1048 | ||
1049 | module-cppflags-real = -include $(common-objpfx)libc-modules.h \ | |
1050 | -DMODULE_NAME=$(in-module) | |
1051 | ||
1052 | # We don't need libc-modules.h and the MODULE_NAME definition for .v.i | |
1053 | # files. These targets don't (and will likely never need to) use the IS_IN | |
1054 | # facility. In fact, shlib-versions should not use it because that will | |
1055 | # create a circular dependency as libc-modules.h is generated from | |
1056 | # shlib-versions. | |
1057 | module-cppflags = $(if $(filter %.mk.i %.v.i,$(@F)),,$(module-cppflags-real)) | |
1058 | ||
1059 | # These are the variables that the implicit compilation rules use. | |
1060 | # Note that we can't use -std=* in CPPFLAGS, because it overrides | |
1061 | # the implicit -lang-asm and breaks cpp behavior for .S files--notably | |
1062 | # it causes cpp to stop predefining __ASSEMBLER__. | |
1063 | CPPFLAGS = $(config-extra-cppflags) $(CPPFLAGS-config) \ | |
1064 | $($(subdir)-CPPFLAGS) \ | |
1065 | $(+includes) $(defines) $(module-cppflags) \ | |
1066 | -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \ | |
1067 | $(CPPFLAGS-$(suffix $@)) \ | |
1068 | $(foreach lib,$(libof-$(basename $(@F))) \ | |
1069 | $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \ | |
1070 | $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F))) \ | |
1071 | -DTOP_NAMESPACE=glibc | |
1072 | ||
1073 | override CFLAGS = -std=gnu11 -fgnu89-inline $(config-extra-cflags) \ | |
1074 | $(filter-out %frame-pointer,$(+cflags)) $(+gccwarn-c) \ | |
1075 | $(+extra-math-flags) $(+extra-time-flags) \ | |
1076 | $(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) \ | |
1077 | $(CFLAGS-$(@F)) $(tls-model) \ | |
1078 | $(foreach lib,$(libof-$(basename $(@F))) \ | |
1079 | $(libof-$(<F)) $(libof-$(@F)),$(CFLAGS-$(lib))) | |
1080 | # Use our copies of cstdlib and cmath. | |
1081 | override CXXFLAGS = -I$(common-objpfx) $(c++-sysincludes) \ | |
1082 | $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \ | |
1083 | $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F)) | |
1084 | ||
1085 | # If everything is compiled with -fPIC (implicitly) we must tell this by | |
1086 | # defining the PIC symbol. | |
1087 | ifeq (yes,$(build-pic-default)) | |
1088 | pic-default = -DPIC | |
1089 | endif | |
1090 | ||
1091 | # Enable object files for different versions of the library. | |
1092 | # Various things use $(object-suffixes) to know what all to make. | |
1093 | # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX}) | |
1094 | # to pass different flags for each flavor. | |
1095 | libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o)) | |
1096 | # .op may be added to all-object-suffixes below. | |
1097 | all-object-suffixes := .o .os .oS | |
1098 | object-suffixes := | |
1099 | CPPFLAGS-.o = $(pic-default) | |
1100 | # libc.a must be compiled with -fPIE/-fpie for static PIE. | |
1101 | CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) $(pie-default) | |
1102 | CFLAGS-.o += $(call elide-fortify-source,.o,$(routines_no_fortify)) | |
1103 | CFLAGS-.o += $(call elide-fortify-source,_chk.o,$(routines_no_fortify)) | |
1104 | libtype.o := lib%.a | |
1105 | object-suffixes += .o | |
1106 | ifeq (yes,$(build-shared)) | |
1107 | # Under --enable-shared, we will build a shared library of PIC objects. | |
1108 | # The PIC object files are named foo.os. | |
1109 | object-suffixes += .os | |
1110 | pic-cppflags = -DPIC -DSHARED | |
1111 | CPPFLAGS-.os = $(pic-cppflags) | |
1112 | CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag) | |
1113 | CFLAGS-.os += $(call elide-fortify-source,.os,$(routines_no_fortify)) | |
1114 | CFLAGS-.os += $(call elide-fortify-source,_chk.os,$(routines_no_fortify)) | |
1115 | libtype.os := lib%_pic.a | |
1116 | # This can be changed by a sysdep makefile | |
1117 | pic-ccflag = -fPIC | |
1118 | # This one should always stay like this unless there is a very good reason. | |
1119 | PIC-ccflag = -fPIC | |
1120 | endif | |
1121 | # This can be changed by a sysdep makefile | |
1122 | pie-ccflag = -fPIE | |
1123 | no-pie-ccflag = -fno-pie | |
1124 | # This one should always stay like this unless there is a very good reason. | |
1125 | PIE-ccflag = -fPIE | |
1126 | ifeq (yes,$(build-profile)) | |
1127 | # Under --enable-profile, we will build a static library of profiled objects. | |
1128 | # The profiled object files are named foo.op. | |
1129 | all-object-suffixes += .op | |
1130 | object-suffixes += .op | |
1131 | CPPFLAGS-.op = -DPROF $(pic-default) | |
1132 | # libc_p.a must be compiled with -fPIE/-fpie for static PIE. | |
1133 | CFLAGS-.op = -pg $(pie-default) | |
1134 | CFLAGS-.op += $(call elide-fortify-source,.op,$(routines_no_fortify)) | |
1135 | CFLAGS-.op += $(call elide-fortify-source,_chk.op,$(routines_no_fortify)) | |
1136 | libtype.op = lib%_p.a | |
1137 | endif | |
1138 | ||
1139 | # Convenience variable for when we want to treat shared-library cases | |
1140 | # differently from the rest. | |
1141 | object-suffixes-noshared := $(filter-out .os,$(object-suffixes)) | |
1142 | ||
1143 | object-suffixes-for-libc := $(object-suffixes) | |
1144 | ||
1145 | ifeq (yes,$(build-shared)) | |
1146 | # Build special library that contains the static-only routines for libc. | |
1147 | object-suffixes-for-libc += .oS | |
1148 | ||
1149 | # Must build the routines as PIC, though, because they can end up in (users') | |
1150 | # shared objects. We don't want to use CFLAGS-os because users may, for | |
1151 | # example, make that processor-specific. | |
1152 | CFLAGS-.oS = $(CFLAGS-.o) $(PIC-ccflag) $(extra-nonshared-cflags) | |
1153 | CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC -DLIBC_NONSHARED=1 | |
1154 | libtype.oS = lib%_nonshared.a | |
1155 | endif | |
1156 | ||
1157 | # The assembler can generate debug information too. | |
1158 | ifndef ASFLAGS | |
1159 | ASFLAGS := $(filter -g% -fdebug-prefix-map=%,$(CFLAGS)) | |
1160 | endif | |
1161 | override ASFLAGS += -Werror=undef $(ASFLAGS-config) $(asflags-cpu) | |
1162 | ||
1163 | ifndef BUILD_CC | |
1164 | BUILD_CC = $(CC) | |
1165 | endif | |
1166 | ||
1167 | move-if-change = $(SHELL) $(..)scripts/move-if-change | |
1168 | \f | |
1169 | -include $(common-objpfx)sysd-sorted | |
1170 | subdirs = $(sorted-subdirs) | |
1171 | subdir-srcdirs = $(foreach dir,$(subdirs),\ | |
1172 | $(firstword $($(dir)-srcdir) $(..)$(dir))) | |
1173 | ||
1174 | # This is a pair of implicit rules to preprocess a file with # comments, | |
1175 | # %ifdef et al, based on config.h settings or other %include'd files. | |
1176 | # We use chained rules instead of a pipeline here so that we can properly | |
1177 | # check the exit status of cpp rather than using its bad output when there | |
1178 | # is a preprocessing error. Another rule should depend on the output file | |
1179 | # `FOO.v', and along with that `FOO.v.i' should be given dependencies | |
1180 | # listing both its input files, and any header files that it may reference | |
1181 | # (but no commands). | |
1182 | %.v.i: $(common-objpfx)config.h $(..)Makeconfig | |
1183 | sed '/^[ ]*%/!s/#.*$$//;/^[ ]*$$/d;s/^[ ]*%/#/' \ | |
1184 | $(filter-out FORCE %.h $(..)Makeconfig,$^) \ | |
1185 | | $(CC) -E -undef $(CPPFLAGS) -x assembler-with-cpp - \ | |
1186 | > $@T | |
1187 | mv -f $@T $@ | |
1188 | %.v: %.v.i | |
1189 | sed '/^[ ]*#/d;/^[ ]*$$/d' $< > $@T | |
1190 | mv -f $@T $@ | |
1191 | ||
1192 | ifeq (yes, $(build-shared)) | |
1193 | ||
1194 | # To generate a header to support more than one ABI for different | |
1195 | # architecture variants, the CPU/Makefile defines abi-variants to be a | |
1196 | # list of names for those variants (e.g. 32 64), and, for each variant, | |
1197 | # defines abi-$(variant)-condition to be the condition for those options | |
1198 | # to use in a C #if condition. abi-includes may be defined to a list of | |
1199 | # headers to include in the generated header, if the default does not | |
1200 | # suffice. default-abi is defined to be the ABI for the current glibc | |
1201 | # build. | |
1202 | ||
1203 | ifndef abi-includes | |
1204 | abi-includes := bits/wordsize.h | |
1205 | endif | |
1206 | ||
1207 | # Process the shlib-versions file, which tells us what shared library | |
1208 | # version numbers to use when we install shared objects on this system. | |
1209 | # We need to wait until $(subdirs) is complete. | |
1210 | ifeq ($(sysd-sorted-done),t) | |
1211 | -include $(common-objpfx)soversions.mk | |
1212 | ifndef avoid-generated | |
1213 | $(common-objpfx)shlib-versions.v.i: \ | |
1214 | $(wildcard $(+sysdep_dirs:=/shlib-versions) \ | |
1215 | $(subdir-srcdirs:=/shlib-versions)) \ | |
1216 | $(..)shlib-versions | |
1217 | ||
1218 | $(common-objpfx)soversions.i: $(..)scripts/soversions.awk \ | |
1219 | $(common-objpfx)shlib-versions.v | |
1220 | $(AWK) -f $^ > $@T | |
1221 | mv -f $@T $@ | |
1222 | $(common-objpfx)soversions.mk: $(common-objpfx)soversions.i $(..)Makeconfig | |
1223 | (while read which lib number setname; do \ | |
1224 | eval seen_$$which=1; \ | |
1225 | test x"$$which" = xDEFAULT || continue; \ | |
1226 | case $$number in \ | |
1227 | [0-9]*) echo "$$lib.so-version=.$$number"; \ | |
1228 | echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\ | |
1229 | *) echo "$$lib.so-version=$$number"; \ | |
1230 | echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\ | |
1231 | esac; \ | |
1232 | done; \ | |
1233 | echo soversions.mk-done = t;) < $< > $@T; exit 0 | |
1234 | mv -f $@T $@ | |
1235 | endif | |
1236 | endif | |
1237 | ||
1238 | postclean-generated += soversions.mk soversions.i \ | |
1239 | shlib-versions.v shlib-versions.v.i | |
1240 | ||
1241 | before-compile += $(common-objpfx)libc-modules.h | |
1242 | common-generated += libc-modules.h libc-modules.stmp | |
1243 | ifeq ($(soversions.mk-done),t) | |
1244 | # Generate a header with macro definitions for use with the IS_IN macro. | |
1245 | # These are the possible values for the MODULE_NAME macro defined when building | |
1246 | # sources, to identify which module the translation unit is going to be built | |
1247 | # into. | |
1248 | $(common-objpfx)libc-modules.h: $(common-objpfx)libc-modules.stmp; @: | |
1249 | $(common-objpfx)libc-modules.stmp: $(..)scripts/gen-libc-modules.awk \ | |
1250 | $(common-objpfx)soversions.i | |
1251 | $(AWK) -v buildlist="$(subst -,_,$(built-modules))" -f $^ > ${@:stmp=T} | |
1252 | $(move-if-change) ${@:stmp=T} ${@:stmp=h} | |
1253 | touch $@ | |
1254 | ||
1255 | endif | |
1256 | ||
1257 | # Build the tunables list header early since it could be used by any module in | |
1258 | # glibc. | |
1259 | before-compile += $(common-objpfx)dl-tunable-list.h | |
1260 | common-generated += dl-tunable-list.h dl-tunable-list.stmp | |
1261 | ||
1262 | $(common-objpfx)dl-tunable-list.h: $(common-objpfx)dl-tunable-list.stmp; @: | |
1263 | $(common-objpfx)dl-tunable-list.stmp: \ | |
1264 | $(..)scripts/gen-tunables.awk \ | |
1265 | $(..)elf/dl-tunables.list \ | |
1266 | $(wildcard $(subdirs:%=$(..)%/dl-tunables.list)) \ | |
1267 | $(wildcard $(sysdirs:%=%/dl-tunables.list)) | |
1268 | LC_ALL=C $(AWK) -f $^ > ${@:stmp=T} | |
1269 | $(move-if-change) ${@:stmp=T} ${@:stmp=h} | |
1270 | touch $@ | |
1271 | ||
1272 | # Dump the GCC macros used by the default compiler flags to a header | |
1273 | # file, so that they can be inspected when using different compiler | |
1274 | # flags. Add the GCCMACRO prefix to make these macro names unique. | |
1275 | $(common-objpfx)gcc-macros.h.in: $(common-objpfx)config.status | |
1276 | $(CC) $(CFLAGS) $(CPPFLAGS) -E -dM -x c -o $@ /dev/null | |
1277 | $(common-objpfx)gcc-macros.h: $(common-objpfx)gcc-macros.h.in | |
1278 | sed 's/^#define /#define GCCMACRO/' < $< > $@ | |
1279 | before-compile += $(common-objpfx)gcc-macros.h | |
1280 | ||
1281 | # Generate version maps, but wait until sysdep-subdirs is known | |
1282 | ifeq ($(sysd-sorted-done),t) | |
1283 | ifeq ($(build-shared),yes) | |
1284 | -include $(common-objpfx)sysd-versions | |
1285 | -include $(common-objpfx)Versions.mk | |
1286 | $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions | |
1287 | common-generated += $(version-maps) | |
1288 | postclean-generated += sysd-versions Versions.all abi-versions.h \ | |
1289 | Versions.def Versions.v.i Versions.v Versions.mk | |
1290 | ||
1291 | ifndef avoid-generated | |
1292 | ifneq ($(sysd-versions-subdirs),$(sorted-subdirs) $(config-sysdirs)) | |
1293 | sysd-versions-force = FORCE | |
1294 | FORCE: | |
1295 | endif | |
1296 | ||
1297 | $(common-objpfx)Versions.def: $(..)scripts/versionlist.awk \ | |
1298 | $(common-objpfx)Versions.v | |
1299 | LC_ALL=C $(AWK) -f $^ > $@T | |
1300 | mv -f $@T $@ | |
1301 | ||
1302 | $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \ | |
1303 | $(common-objpfx)soversions.i \ | |
1304 | $(common-objpfx)Versions.def | |
1305 | { while read which lib version setname; do \ | |
1306 | test x"$$which" = xDEFAULT || continue; \ | |
1307 | test -z "$$setname" || echo "$$lib : $$setname"; \ | |
1308 | done < $(word 2,$^); \ | |
1309 | cat $(word 3,$^); \ | |
1310 | } | LC_ALL=C $(AWK) -f $< > $@T | |
1311 | mv -f $@T $@ | |
1312 | $(common-objpfx)Versions.mk: $(..)scripts/haveversions.awk \ | |
1313 | $(common-objpfx)Versions.all | |
1314 | $(AWK) -f $^ > $@T | |
1315 | mv -f $@T $@ | |
1316 | # See %.v/%.v.i implicit rules in Makeconfig. | |
1317 | $(common-objpfx)Versions.v.i: $(wildcard $(subdirs:%=$(..)%/Versions)) \ | |
1318 | $(wildcard $(sysdirs:%=%/Versions)) \ | |
1319 | $(sysd-versions-force) | |
1320 | $(common-objpfx)sysd-versions: $(common-objpfx)versions.stmp | |
1321 | $(common-objpfx)versions.stmp: $(common-objpfx)Versions.all \ | |
1322 | $(common-objpfx)Versions.v \ | |
1323 | $(..)scripts/versions.awk | |
1324 | ( echo 'sysd-versions-subdirs = $(subdirs) $(config-sysdirs)' ; \ | |
1325 | cat $(word 2,$^) \ | |
1326 | | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \ | |
1327 | -v move_if_change='$(move-if-change)' \ | |
1328 | -f $(word 3,$^); \ | |
1329 | ) > $(common-objpfx)sysd-versionsT | |
1330 | mv -f $(common-objpfx)sysd-versionsT $(common-objpfx)sysd-versions | |
1331 | touch $@ | |
1332 | endif # avoid-generated | |
1333 | endif # $(build-shared) = yes | |
1334 | ||
1335 | -include $(common-objpfx)time64-compat.mk | |
1336 | postclean-generated += time64-compat.mk | |
1337 | ||
1338 | $(common-objpfx)time64-compat.mk: $(common-objpfx)time64-compat.mk.i \ | |
1339 | $(sysd-versions-force) | |
1340 | sed '/^[ ]*#/d;/^[ ]*$$/d' $< > $@T | |
1341 | mv -f $@T $@ | |
1342 | $(common-objpfx)time64-compat.mk.i: $(..)Makeconfig | |
1343 | printf "#include <time64-compat.h>\n#ifdef TIME64_NON_DEFAULT\nhave-time64-compat = yes\n#endif" \ | |
1344 | | $(CC) -E -undef $(CPPFLAGS) -x assembler-with-cpp - > $@T | |
1345 | mv -f $@T $@ | |
1346 | ||
1347 | ||
1348 | endif # sysd-sorted-done | |
1349 | ||
1350 | # The name under which the run-time dynamic linker is installed. | |
1351 | # We are currently going for the convention that `/lib/ld.so.1' | |
1352 | # names the SVR4/ELF ABI-compliant dynamic linker. | |
1353 | ifndef rtld-installed-name | |
1354 | ifdef ld.so-version | |
1355 | rtld-installed-name = $(ld.so-version) | |
1356 | else | |
1357 | rtld-installed-name = ld.so.1 | |
1358 | endif | |
1359 | endif | |
1360 | ||
1361 | ifndef rtld-version-installed-name | |
1362 | rtld-version-installed-name = ld-$(version).so | |
1363 | endif | |
1364 | ||
1365 | endif # build-shared | |
1366 | ||
1367 | ||
1368 | ifeq ($(build-shared),yes) | |
1369 | libm = $(common-objpfx)math/libm.so$(libm.so-version) | |
1370 | libmvec = $(common-objpfx)mathvec/libmvec.so$(libmvec.so-version) | |
1371 | else | |
1372 | libm = $(common-objpfx)math/libm.a | |
1373 | libmvec = $(common-objpfx)mathvec/libmvec.a | |
1374 | endif | |
1375 | ||
1376 | ifeq ($(build-shared),yes) | |
1377 | libsupport = $(common-objpfx)support/libsupport_nonshared.a | |
1378 | else | |
1379 | libsupport = $(common-objpfx)support/libsupport.a | |
1380 | endif | |
1381 | ||
1382 | # This is a partial list of subdirectories containing the library source. | |
1383 | # The order is more or less arbitrary. The sorting step will take care of the | |
1384 | # dependencies and generate sorted-subdirs dynamically. | |
1385 | all-subdirs = csu assert ctype locale intl catgets math setjmp signal \ | |
1386 | stdlib stdio-common libio malloc string wcsmbs time dirent \ | |
1387 | posix io termios resource misc socket sysvipc gmon \ | |
1388 | gnulib iconv iconvdata wctype manual po argp \ | |
1389 | localedata timezone rt conform debug mathvec support \ | |
1390 | dlfcn elf | |
1391 | ||
1392 | ifndef avoid-generated | |
1393 | # sysd-sorted itself will contain rules making the sysd-sorted target | |
1394 | # depend on Depend files. But if you just added a Depend file to an | |
1395 | # existing directory not in all-subdirs, then sysd-sorted needs to | |
1396 | # be regenerated, so it depends on existing $(sorted-subdirs:=/Depend) files. | |
1397 | all-Depend-files := $(wildcard $(sort \ | |
1398 | $(foreach dir,$(all-subdirs),\ | |
1399 | $(firstword $($(dir)-srcdir) \ | |
1400 | $(..)$(dir))/Depend) \ | |
1401 | $(sorted-subdirs:=/Depend))) | |
1402 | $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk \ | |
1403 | $(common-objpfx)config.make $(..)Makeconfig \ | |
1404 | $(wildcard $(sysdirs:=/Subdirs)) \ | |
1405 | $(all-Depend-files) | |
1406 | $(AWK) -f $< \ | |
1407 | -v subdirs='$(all-subdirs)' \ | |
1408 | -v srcpfx='$(..)' \ | |
1409 | $(filter %/Subdirs %/Depend,$^) > $@-tmp | |
1410 | mv -f $@-tmp $@ | |
1411 | $(all-Depend-files): ; | |
1412 | endif | |
1413 | ||
1414 | # This gives partial TARGET:SOURCE pattern pairs to have rules | |
1415 | # emitted into sysd-rules. A sysdeps Makeconfig fragment can | |
1416 | # add its own special object file prefix to this list with e.g. foo-%:% | |
1417 | # to have foo-*.? compiled from *.? using $(foo-CPPFLAGS). | |
1418 | sysd-rules-patterns := %:% rtld-%:rtld-% rtld-%:% m_%:s_% | |
1419 | ||
1420 | # Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here. | |
1421 | sysdep-makeconfigs := $(wildcard $(+sysdep_dirs:=/Makeconfig)) | |
1422 | ifneq (,$(sysdep-makeconfigs)) | |
1423 | include $(sysdep-makeconfigs) | |
1424 | endif | |
1425 | ||
1426 | # Compute just the target patterns. Makeconfig has set sysd-rules-patterns. | |
1427 | sysd-rules-targets := $(sort $(foreach p,$(sysd-rules-patterns),\ | |
1428 | $(firstword $(subst :, ,$p)))) | |
1429 | ||
1430 | # $(libpthread-routines-var) and $(librt-routines-var) are the make | |
1431 | # variable to which pthread routines need to be added to land in the | |
1432 | # right library. | |
1433 | ifeq ($(pthread-in-libc),yes) | |
1434 | libpthread-routines-var = routines | |
1435 | librt-routines-var = routines | |
1436 | libanl-routines-var = routines | |
1437 | else | |
1438 | libpthread-routines-var = libpthread-routines | |
1439 | librt-routines-var = librt-routines | |
1440 | libanl-routines-var = libanl-routines | |
1441 | endif | |
1442 | ||
1443 | # A sysdeps Makeconfig fragment may set libc-reentrant to yes. | |
1444 | ifeq (yes,$(libc-reentrant)) | |
1445 | defines += -D_LIBC_REENTRANT | |
1446 | ||
1447 | libio-mtsafe = -D_IO_MTSAFE_IO | |
1448 | endif | |
1449 | ||
1450 | # The name to give to a test in test results summaries. | |
1451 | test-name = $(strip $(patsubst %.out, %, $(patsubst $(common-objpfx)%, %, $@))) | |
1452 | ||
1453 | # Likewise, in XFAIL variable names. | |
1454 | test-xfail-name = $(strip $(patsubst %.out, %, $(patsubst $(objpfx)%, %, $@))) | |
1455 | ||
1456 | # Command to output a test status line (such as PASS: test-name). If | |
1457 | # test-xfail-$(test-xfail-name) has a nonempty value, the status will be | |
1458 | # XPASS or XFAIL rather than PASS or FAIL. | |
1459 | evaluate-test = $(..)scripts/evaluate-test.sh $(test-name) $$? \ | |
1460 | $(if $(test-xfail-$(test-xfail-name)),true,false) \ | |
1461 | $(if $(stop-on-test-failure),true,false) \ | |
1462 | > $(common-objpfx)$(test-name).test-result | |
1463 | ||
1464 | endif # Makeconfig not yet included | |
1465 | ||
1466 | # Local Variables: | |
1467 | # mode: makefile | |
1468 | # End: |