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1 | # Copyright (C) 1991-2003, 2004 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, write to the Free | |
16 | # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | # 02111-1307 USA. | |
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 "$(origin +included-Makeconfig)" "file" | |
29 | ||
30 | +included-Makeconfig := yes | |
31 | ||
32 | ifdef subdir | |
33 | .. := ../ | |
34 | endif | |
35 | ||
36 | # If config.make exists, the source directory was configured, | |
37 | # so don't try to be clever and find another directory to build in. | |
38 | ifneq (,$(wildcard $(..)config.make)) | |
39 | ARCH = | |
40 | machine = | |
41 | else # Not configured. | |
42 | ifndef ARCH | |
43 | ifdef machine | |
44 | ARCH = $(machine) | |
45 | endif # machine | |
46 | endif # ARCH | |
47 | endif # config.make | |
48 | ||
49 | # Directory for object files and libc.a. If this is not defined, the | |
50 | # object files live in the subdirectories where their sources live, and | |
51 | # libc.a lives in the parent directory (this probably doesn't work any | |
52 | # more). | |
53 | ifdef ARCH | |
54 | ifeq ($(filter /%,$(ARCH)),) | |
55 | objdir := $(..)$(ARCH) | |
56 | else | |
57 | objdir = $(ARCH) | |
58 | endif | |
59 | endif | |
60 | ||
61 | # $(common-objdir) is the place to put objects and | |
62 | # such that are not specific to a single subdir. | |
63 | ifdef objdir | |
64 | objpfx := $(patsubst %//,%/,$(objdir)/$(subdir)/) | |
65 | common-objpfx = $(objdir)/ | |
66 | common-objdir = $(objdir) | |
67 | else | |
68 | objpfx := | |
69 | ifdef .. | |
70 | common-objpfx = $(..) | |
71 | common-objdir = .. | |
72 | else | |
73 | # This is a kludge. make wizards might grok. | |
74 | common-objpfx = sysdeps/../ | |
75 | common-objdir = . | |
76 | endif | |
77 | endif | |
78 | ||
79 | # Root of the sysdeps tree. | |
80 | sysdep_dir := $(..)sysdeps | |
81 | export sysdep_dir := $(sysdep_dir) | |
82 | ||
83 | # Get the values defined by options to `configure'. | |
84 | include $(common-objpfx)config.make | |
85 | ||
86 | # What flags to give to sources which call user provided callbacks | |
87 | uses-callbacks = $(exceptions) | |
88 | ||
89 | # What flags to give to tests which test stack alignment | |
90 | stack-align-test-flags = | |
91 | ||
92 | # We have a special subdir for each binary format. | |
93 | # For now, only ELF is fully supported. | |
94 | ifeq ($(elf),yes) | |
95 | binfmt-subdir = elf | |
96 | else | |
97 | # This is probably better than nothing. | |
98 | binfmt-subdir = aout | |
99 | endif | |
100 | ||
101 | # Complete path to sysdep dirs. | |
102 | export full_config_sysdirs := $(addprefix $(..),$(config-sysdirs)) | |
103 | ||
104 | # Run config.status to update config.make and config.h. We don't show the | |
105 | # dependence of config.h to Make, because it is only touched when it | |
106 | # changes and so config.status would be run every time; the dependence of | |
107 | # config.make should suffice to force regeneration and re-exec, and the new | |
108 | # image will notice if config.h changed. | |
109 | $(common-objpfx)config.make: $(common-objpfx)config.status \ | |
110 | $(..)config.make.in $(..)config.h.in | |
111 | cd $(<D); $(SHELL) $(<F) | |
112 | ||
113 | # Find all the add-on and sysdeps configure fragments, to make sure we | |
114 | # re-run configure when any of them changes. | |
115 | $(common-objpfx)config.status: $(..)version.h $(..)configure \ | |
116 | $(foreach dir,$(full_config_sysdirs),\ | |
117 | $(wildcard \ | |
118 | $(dir)/Implies) \ | |
119 | $(patsubst %.in,%,\ | |
120 | $(firstword $(wildcard \ | |
121 | $(addprefix $(dir)/,configure configure.in))))) \ | |
122 | $(patsubst %.in,%,\ | |
123 | $(foreach dir,$(add-ons),\ | |
124 | $(firstword $(wildcard \ | |
125 | $(addprefix $(..)$(dir)/,configure configure.in))))) | |
126 | @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \ | |
127 | echo The GNU C library has not been configured. >&2; \ | |
128 | echo Run \`configure\' to configure it before building. >&2; \ | |
129 | echo Try \`configure --help\' for more details. >&2; \ | |
130 | exit 1; fi | |
131 | ||
132 | # We don't want CPPFLAGS to be exported to the command running configure. | |
133 | unexport CPPFLAGS | |
134 | ||
135 | # Get the user's configuration parameters. | |
136 | ifneq ($(wildcard $(..)configparms),) | |
137 | include $(..)configparms | |
138 | endif | |
139 | ifneq ($(objpfx),) | |
140 | ifneq ($(wildcard $(common-objpfx)configparms),) | |
141 | include $(common-objpfx)configparms | |
142 | endif | |
143 | endif | |
144 | \f | |
145 | #### | |
146 | #### These are the configuration variables. You can define values for | |
147 | #### the variables below in the file `configparms'. | |
148 | #### Do NOT edit this file. | |
149 | #### | |
150 | ||
151 | ||
152 | # Common prefix for machine-independent installation directories. | |
153 | ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value. | |
154 | prefix = /usr/local | |
155 | endif | |
156 | ||
157 | # Decide whether we shall build the programs or not. We always do this | |
158 | # unless the user tells us (in configparms) or we are building for a | |
159 | # standalone target. | |
160 | ifndef build-programs | |
161 | ifneq ($(config-os),none) | |
162 | build-programs=yes | |
163 | else | |
164 | build-programs=no | |
165 | endif | |
166 | endif | |
167 | ||
168 | # Common prefix for machine-dependent installation directories. | |
169 | ifeq ($(origin exec_prefix),undefined) | |
170 | exec_prefix = $(prefix) | |
171 | endif | |
172 | ||
173 | # Where to install the library and object files. | |
174 | ifndef libdir | |
175 | libdir = $(exec_prefix)/lib | |
176 | endif | |
177 | inst_libdir = $(install_root)$(libdir) | |
178 | ||
179 | # Where to install the shared library and dynamic linker. | |
180 | ifndef slibdir | |
181 | slibdir = $(exec_prefix)/lib | |
182 | endif | |
183 | inst_slibdir = $(install_root)$(slibdir) | |
184 | ||
185 | # Prefix to put on files installed in $(libdir). For libraries `libNAME.a', | |
186 | # the prefix is spliced between `lib' and the name, so the linker switch | |
187 | # `-l$(libprefix)NAME' finds the library; for other files the prefix is | |
188 | # just prepended to the whole file name. | |
189 | ifeq ($(origin libprefix),undefined) | |
190 | libprefix = | |
191 | endif | |
192 | ||
193 | # Where to install the header files. | |
194 | ifndef includedir | |
195 | includedir = $(prefix)/include | |
196 | endif | |
197 | inst_includedir = $(install_root)$(includedir) | |
198 | ||
199 | # Where to install machine-independent data files. | |
200 | # These are the timezone database, and the locale database. | |
201 | ifndef datadir | |
202 | datadir = $(prefix)/share | |
203 | endif | |
204 | inst_datadir = $(install_root)$(datadir) | |
205 | ||
206 | # Where to install the timezone data files (which are machine-independent). | |
207 | ifndef zonedir | |
208 | zonedir = $(datadir)/zoneinfo | |
209 | endif | |
210 | inst_zonedir = $(install_root)$(zonedir) | |
211 | ||
212 | # Where to install the locale files. | |
213 | ifndef localedir | |
214 | localedir = $(libdir)/locale | |
215 | endif | |
216 | inst_localedir = $(install_root)$(localedir) | |
217 | ||
218 | # Where to install the message catalog data files (which are | |
219 | # machine-independent). | |
220 | ifndef msgcatdir | |
221 | msgcatdir = $(datadir)/locale | |
222 | endif | |
223 | inst_msgcatdir = $(install_root)$(msgcatdir) | |
224 | ||
225 | # Where to install the locale charmap source files. | |
226 | ifndef i18ndir | |
227 | i18ndir = $(datadir)/i18n | |
228 | endif | |
229 | inst_i18ndir = $(install_root)$(i18ndir) | |
230 | ||
231 | # Where to install the shared object for charset transformation. | |
232 | ifndef gconvdir | |
233 | gconvdir = $(libdir)/gconv | |
234 | endif | |
235 | inst_gconvdir = $(install_root)$(gconvdir) | |
236 | ||
237 | # Where to install programs. | |
238 | ifndef bindir | |
239 | bindir = $(exec_prefix)/bin | |
240 | endif | |
241 | inst_bindir = $(install_root)$(bindir) | |
242 | ||
243 | # Where to install internal programs. | |
244 | ifndef libexecdir | |
245 | libexecdir = $(exec_prefix)/libexec | |
246 | endif | |
247 | inst_libexecdir = $(install_root)$(libexecdir) | |
248 | ||
249 | # Where to install administrative programs. | |
250 | ifndef rootsbindir | |
251 | rootsbindir = $(exec_prefix)/sbin | |
252 | endif | |
253 | inst_rootsbindir = $(install_root)$(rootsbindir) | |
254 | ||
255 | ifndef sbindir | |
256 | sbindir = $(exec_prefix)/sbin | |
257 | endif | |
258 | inst_sbindir = $(install_root)$(sbindir) | |
259 | ||
260 | # Where to install the Info files. | |
261 | ifndef infodir | |
262 | infodir = $(prefix)/info | |
263 | endif | |
264 | inst_infodir = $(install_root)$(infodir) | |
265 | ||
266 | # Where to install default configuration files. These include the local | |
267 | # timezone specification and network data base files. | |
268 | ifndef sysconfdir | |
269 | sysconfdir = $(prefix)/etc | |
270 | endif | |
271 | inst_sysconfdir = $(install_root)$(sysconfdir) | |
272 | ||
273 | # What timezone should be the installed default (e.g., US/Eastern). | |
274 | # Run `make -C time echo-zonenames' to see a list of available zone names. | |
275 | # The local timezone can be changed with `zic -l TIMEZONE' at any time. | |
276 | ifndef localtime | |
277 | localtime = Factory | |
278 | endif | |
279 | ||
280 | # Where to install the "localtime" timezone file; this is the file whose | |
281 | # contents $(localtime) specifies. If this is a relative pathname, it is | |
282 | # relative to $(zonedir). It is a good idea to put this somewhere | |
283 | # other than there, so the zoneinfo directory contains only universal data, | |
284 | # localizing the configuration data elsewhere. | |
285 | ifndef localtime-file | |
286 | localtime-file = $(sysconfdir)/localtime | |
287 | inst_localtime-file = $(install_root)$(localtime-file) | |
288 | endif | |
289 | ||
290 | # What to use for leap second specifications in compiling the default | |
291 | # timezone files. Set this to `/dev/null' for no leap second handling as | |
292 | # 1003.1 requires, or to `leapseconds' for proper leap second handling. | |
293 | # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'. | |
294 | # This variable determines the default: if it's `/dev/null', | |
295 | # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE. | |
296 | ifndef leapseconds | |
297 | leapseconds = /dev/null | |
298 | endif | |
299 | ||
300 | # What timezone's DST rules should be used when a POSIX-style TZ | |
301 | # environment variable doesn't specify any rules. For 1003.1 compliance | |
302 | # this timezone must use rules that are as U.S. federal law defines DST. | |
303 | # Run `make -C time echo-zonenames' to see a list of available zone names. | |
304 | # This setting can be changed with `zic -p TIMEZONE' at any time. | |
305 | # If you want POSIX.1 compatibility, use `America/New_York'. | |
306 | ifndef posixrules | |
307 | posixrules = America/New_York | |
308 | endif | |
309 | ||
310 | # Where to install the "posixrules" timezone file; this is file | |
311 | # whose contents $(posixrules) specifies. If this is a relative | |
312 | # pathname, it is relative to $(zonedir). | |
313 | ifndef posixrules-file | |
314 | posixrules-file = posixrules | |
315 | endif | |
316 | ||
317 | ||
318 | # Directory where your system's native header files live. | |
319 | # This is used on Unix systems to generate some GNU libc header files. | |
320 | ifndef sysincludedir | |
321 | sysincludedir = /usr/include | |
322 | endif | |
323 | ||
324 | ||
325 | # Commands to install files. | |
326 | ifndef INSTALL_DATA | |
327 | INSTALL_DATA = $(INSTALL) -m 644 | |
328 | endif | |
329 | ifndef INSTALL_SCRIPT | |
330 | INSTALL_SCRIPT = $(INSTALL) | |
331 | endif | |
332 | ifndef INSTALL_PROGRAM | |
333 | INSTALL_PROGRAM = $(INSTALL) | |
334 | endif | |
335 | ifndef INSTALL | |
336 | INSTALL = install | |
337 | endif | |
338 | ||
339 | ||
340 | # The name of the C compiler. | |
341 | # If you've got GCC, and it works, use it. | |
342 | ifeq ($(origin CC),default) | |
343 | CC := gcc | |
344 | endif | |
345 | ||
346 | # The name of the C compiler to use for compilations of programs to run on | |
347 | # the host that is building the library. If you set CC to a | |
348 | # cross-compiler, you must set this to the normal compiler. | |
349 | ifndef BUILD_CC | |
350 | BUILD_CC = $(CC) | |
351 | endif | |
352 | ||
353 | # Default flags to pass the C compiler. | |
354 | ifndef default_cflags | |
355 | ifeq ($(release),stable) | |
356 | default_cflags := -g -O2 | |
357 | else | |
358 | default_cflags := -g -O | |
359 | endif | |
360 | endif | |
361 | ||
362 | # Flags to pass the C compiler when assembling preprocessed assembly code | |
363 | # (`.S' files). On some systems the assembler doesn't understand the `#' line | |
364 | # directives the preprocessor produces. If you have troubling compiling | |
365 | # assembly code, try using -P here to suppress these directives. | |
366 | ifndef asm-CPPFLAGS | |
367 | asm-CPPFLAGS = | |
368 | endif | |
369 | ||
370 | # ELF always supports init/fini sections | |
371 | ifeq ($(elf),yes) | |
372 | have-initfini = yes | |
373 | endif | |
374 | ||
375 | # Installed name of the startup code. | |
376 | ifneq ($(have-initfini),yes) | |
377 | # When not having init/fini, there is just one startfile, called crt0.o. | |
378 | start-installed-name = crt0.o | |
379 | else | |
380 | # On systems having init/fini, crt0.o is called crt1.o, and there are | |
381 | # some additional bizarre files. | |
382 | start-installed-name = crt1.o | |
383 | endif | |
384 | # On systems that do not need a special startfile for statically linked | |
385 | # binaries, simply set it to the normal name. | |
386 | ifndef static-start-installed-name | |
387 | static-start-installed-name = $(start-installed-name) | |
388 | endif | |
389 | ||
390 | ifeq (yesyesyes,$(build-shared)$(elf)$(have-z-combreloc)) | |
391 | combreloc-LDFLAGS = -Wl,-z,combreloc | |
392 | LDFLAGS.so += $(combreloc-LDFLAGS) | |
393 | LDFLAGS-rtld += $(combreloc-LDFLAGS) | |
394 | endif | |
395 | ||
396 | ifeq (yes,$(have-z-relro)) | |
397 | relro-LDFLAGS = -Wl,-z,relro | |
398 | LDFLAGS.so += $(relro-LDFLAGS) | |
399 | LDFLAGS-rtld += $(relro-LDFLAGS) | |
400 | endif | |
401 | ||
402 | # Command for linking programs with the C library. | |
403 | ifndef +link | |
404 | +link = $(CC) -nostdlib -nostartfiles -o $@ \ | |
405 | $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \ | |
406 | $(combreloc-LDFLAGS) $(relro-LDFLAGS) \ | |
407 | $(addprefix $(csu-objpfx),$(start-installed-name)) \ | |
408 | $(+preinit) $(+prector) \ | |
409 | $(filter-out $(addprefix $(csu-objpfx),start.o \ | |
410 | $(start-installed-name))\ | |
411 | $(+preinit) $(link-extra-libs) \ | |
412 | $(common-objpfx)libc% $(+postinit),$^) \ | |
413 | $(link-extra-libs) $(link-libc) $(+postctor) $(+postinit) | |
414 | endif | |
415 | # Command for statically linking programs with the C library. | |
416 | ifndef +link-static | |
417 | +link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \ | |
418 | $(sysdep-LDFLAGS) $(LDFLAGS) \ | |
419 | $(addprefix $(csu-objpfx),$(static-start-installed-name)) \ | |
420 | $(+preinit) $(+prector) \ | |
421 | $(filter-out $(addprefix $(csu-objpfx),start.o \ | |
422 | $(start-installed-name))\ | |
423 | $(+preinit) $(link-extra-libs-static) \ | |
424 | $(common-objpfx)libc% $(+postinit),$^) \ | |
425 | $(link-extra-libs-static) $(link-libc-static) $(+postctor) $(+postinit) | |
426 | endif | |
427 | # Command for statically linking bounded-pointer programs with the C library. | |
428 | ifndef +link-bounded | |
429 | +link-bounded = $(CC) -nostdlib -nostartfiles -static -fbounded-pointers -o $@ \ | |
430 | $(sysdep-LDFLAGS) $(LDFLAGS) \ | |
431 | $(addprefix $(csu-objpfx),b$(static-start-installed-name)) \ | |
432 | $(+preinit) $(+prector) \ | |
433 | $(filter-out $(addprefix $(csu-objpfx),start.ob \ | |
434 | $(start-installed-name))\ | |
435 | $(+preinit) $(link-extra-libs-bounded) \ | |
436 | $(common-objpfx)libc% $(+postinit),$^) \ | |
437 | $(link-extra-libs-bounded) $(link-libc-bounded) $(+postctor) $(+postinit) | |
438 | endif | |
439 | ifndef config-LDFLAGS | |
440 | ifeq (yesyes,$(build-shared)$(elf)) | |
441 | config-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name) | |
442 | endif | |
443 | endif | |
444 | ifndef link-libc | |
445 | ifeq (yes,$(build-shared)) | |
446 | ifeq ($(elf),yes) | |
447 | # We need the versioned name of libc.so in the deps of $(others) et al | |
448 | # so that the symlink to libc.so is created before anything tries to | |
449 | # run the linked programs. | |
450 | link-libc = -Wl,-rpath-link=$(rpath-link) \ | |
451 | $(common-objpfx)libc.so$(libc.so-version) \ | |
452 | $(common-objpfx)$(patsubst %,$(libtype.oS),c) $(gnulib) | |
453 | # This is how to find at build-time things that will be installed there. | |
454 | rpath-dirs = math elf dlfcn nss nis rt resolv crypt | |
455 | endif | |
456 | rpath-link = \ | |
457 | $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%))) | |
458 | elfobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)elf) | |
459 | else | |
460 | nssobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nss) | |
461 | resolvobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)resolv) | |
462 | link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib) | |
463 | endif | |
464 | endif | |
465 | ||
466 | # Differences in the linkers on the various platforms. | |
467 | ifeq ($(elf),yes) | |
468 | LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN' | |
469 | LDFLAGS-soname-fname = -Wl,-soname,$(@F) | |
470 | LDFLAGS-rdynamic = -rdynamic | |
471 | LDFLAGS-Bsymbolic = -Bsymbolic | |
472 | endif | |
473 | ||
474 | # Choose the default search path for the dynamic linker based on | |
475 | # where we will install libraries. | |
476 | ifneq ($(libdir),$(slibdir)) | |
477 | default-rpath = $(slibdir):$(libdir) | |
478 | else | |
479 | default-rpath = $(libdir) | |
480 | endif | |
481 | ||
482 | ifndef link-extra-libs | |
483 | ifeq (yes,$(build-shared)) | |
484 | ifneq ($(common-objpfx),$(objpfx)) | |
485 | link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),\ | |
486 | $(wildcard $(common-objpfx)$(lib).so$($(notdir $(lib)).so-version) \ | |
487 | $(objpfx)$(lib).so$($(notdir $(lib)).so-version))) | |
488 | else | |
489 | link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).so$($(notdir $(lib)).so-version)) | |
490 | endif | |
491 | else | |
492 | link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a) | |
493 | endif | |
494 | endif | |
495 | ||
496 | # The static libraries. | |
497 | ifeq (yes,$(build-static)) | |
498 | link-libc-static = $(common-objpfx)libc.a $(static-gnulib) $(common-objpfx)libc.a | |
499 | link-extra-libs-static = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a) | |
500 | else | |
501 | ifeq (yes,$(build-shared)) | |
502 | # We can try to link the programs with lib*_pic.a... | |
503 | link-libc-static = $(static-gnulib) $(common-objpfx)libc_pic.a | |
504 | link-extra-libs-static = $(link-extra-libs) | |
505 | endif | |
506 | endif | |
507 | link-libc-bounded = $(common-objpfx)libc_b.a $(gnulib) $(common-objpfx)libc_b.a | |
508 | link-extra-libs-bounded = $(foreach lib,$(LDLIBS-$(@F:%-bp=%)),$(common-objpfx)$(lib)_b.a) | |
509 | ||
510 | ifndef gnulib | |
511 | ifneq ($(have-as-needed),yes) | |
512 | libgcc_eh := -lgcc_eh | |
513 | else | |
514 | libgcc_eh := -Wl,--as-needed -lgcc_s$(libgcc_s_suffix) -Wl,--no-as-needed | |
515 | endif | |
516 | ifneq ($(have-cc-with-libunwind),yes) | |
517 | gnulib := -lgcc $(libgcc_eh) | |
518 | static-gnulib := -lgcc -lgcc_eh | |
519 | else | |
520 | gnulib := -lgcc $(libgcc_eh) -lunwind | |
521 | static-gnulib := -lgcc -lgcc_eh -lunwind | |
522 | endif | |
523 | endif | |
524 | ifeq ($(elf),yes) | |
525 | +preinit = $(addprefix $(csu-objpfx),crti.o) | |
526 | +postinit = $(addprefix $(csu-objpfx),crtn.o) | |
527 | +prector = `$(CC) --print-file-name=crtbegin.o` | |
528 | +postctor = `$(CC) --print-file-name=crtend.o` | |
529 | +interp = $(addprefix $(elf-objpfx),interp.os) | |
530 | endif | |
531 | csu-objpfx = $(common-objpfx)csu/ | |
532 | elf-objpfx = $(common-objpfx)elf/ | |
533 | ||
534 | # How to run a program we just linked with our library. | |
535 | # The program binary is assumed to be $(word 2,$^). | |
536 | built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^)) | |
537 | ifeq (yesyes,$(build-shared)$(elf)) | |
538 | comma = , | |
539 | sysdep-library-path = \ | |
540 | $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\ | |
541 | $(filter -Wl$(comma)-rpath-link=%,\ | |
542 | $(sysdep-LDFLAGS))))) | |
543 | run-program-prefix = $(if $(filter $(notdir $(built-program-file)),\ | |
544 | $(tests-static) $(xtests-static)),, \ | |
545 | $(elf-objpfx)$(rtld-installed-name) \ | |
546 | --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path))) | |
547 | else | |
548 | run-program-prefix = | |
549 | endif | |
550 | # Never use $(run-program-prefix) for the statically-linked %-bp test programs | |
551 | built-program-cmd = $(patsubst %,$(run-program-prefix),\ | |
552 | $(filter-out %-bp,$(built-program-file))) \ | |
553 | $(built-program-file) | |
554 | ||
555 | ifndef LD | |
556 | LD := ld -X | |
557 | endif | |
558 | ||
559 | ifndef RANLIB | |
560 | RANLIB = ranlib | |
561 | endif | |
562 | ||
563 | # Extra flags to pass to GCC. | |
564 | ifeq ($(all-warnings),yes) | |
565 | +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes -Wcast-qual -Wbad-function-cast -Wmissing-noreturn -Wmissing-prototypes -Wmissing-declarations -Wcomment -Wcomments -Wtrigraphs -Wsign-compare -Wfloat-equal -Wmultichar | |
566 | else | |
567 | +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes | |
568 | endif | |
569 | ||
570 | # This is the program that generates makefile dependencies from C source files. | |
571 | # The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy | |
572 | # targets for headers so that removed headers don't break the build. | |
573 | ifndef +mkdep | |
574 | +mkdep = $(CC) -M -MP | |
575 | endif | |
576 | ||
577 | # The program that makes Emacs-style TAGS files. | |
578 | ETAGS := etags | |
579 | ||
580 | # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and | |
581 | # perhaps others) to preprocess assembly code in some cases. | |
582 | M4 = m4 | |
583 | ||
584 | # To force installation of files even if they are older than the | |
585 | # installed files. This variable is included in the dependency list | |
586 | # of all installation targets. | |
587 | ifeq ($(force-install),yes) | |
588 | +force = force-install | |
589 | else | |
590 | +force = | |
591 | endif | |
592 | ||
593 | #### | |
594 | #### End of configuration variables. | |
595 | #### | |
596 | \f | |
597 | # This tells some versions of GNU make before 3.63 not to export all variables. | |
598 | .NOEXPORT: | |
599 | ||
600 | # We want to echo the commands we're running without | |
601 | # umpteen zillion filenames along with it (we use `...' instead) | |
602 | # but we don't want this echoing done when the user has said | |
603 | # he doesn't want to see commands echoed by using -s. | |
604 | ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s | |
605 | +cmdecho := echo >/dev/null | |
606 | else # not -s | |
607 | +cmdecho := echo | |
608 | endif # -s | |
609 | ||
610 | # These are the flags given to the compiler to tell | |
611 | # it what sort of optimization and/or debugging output to do. | |
612 | ifndef +cflags | |
613 | # If `CFLAGS' was defined, use that. | |
614 | ifdef CFLAGS | |
615 | +cflags := $(filter-out -I%,$(CFLAGS)) | |
616 | endif # CFLAGS | |
617 | endif # +cflags | |
618 | ||
619 | # If none of the above worked, default to "-g -O". | |
620 | ifeq "$(strip $(+cflags))" "" | |
621 | +cflags := $(default_cflags) | |
622 | endif # $(+cflags) == "" | |
623 | ||
624 | +cflags := $(+cflags) $(+gccwarn) | |
625 | +gcc-nowarn := -w | |
626 | ||
627 | # Don't duplicate options if we inherited variables from the parent. | |
628 | +cflags := $(sort $(+cflags)) | |
629 | ||
630 | ||
631 | # These are flags given to the C compiler to tell it to look for include | |
632 | # files (including ones given in angle brackets) in the current directory, | |
633 | # in the parent library source directory and in the include directory. | |
634 | # `+sysdep-includes' will be defined by Makerules. | |
635 | +includes = -I$(..)include -I. \ | |
636 | $(patsubst %/,-I%,$(objpfx)) $(patsubst %/,-I%,$(..)) \ | |
637 | $(libio-include) $(includes) \ | |
638 | $(+sysdep-includes) $(sysincludes) | |
639 | ||
640 | # Since libio has several internal header files, we use a -I instead | |
641 | # of many little headers in the include directory. | |
642 | libio-include = -I$(..)libio | |
643 | ||
644 | # These are the variables that the implicit compilation rules use. | |
645 | # Note that we can't use -std=* in CPPFLAGS, because it overrides | |
646 | # the implicit -lang-asm and breaks cpp behavior for .S files--notably | |
647 | # it causes cpp to stop predefining __ASSEMBLER__. | |
648 | CPPFLAGS = $($(subdir)-CPPFLAGS) $(+includes) $(defines) \ | |
649 | -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \ | |
650 | $(CPPFLAGS-$(suffix $@)) \ | |
651 | $(foreach lib,$(libof-$(basename $(@F))) \ | |
652 | $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \ | |
653 | $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F))) | |
654 | override CFLAGS = -std=gnu99 \ | |
655 | $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \ | |
656 | $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F)) | |
657 | ||
658 | # If everything is compiled with -fPIC (implicitly) we must tell this by | |
659 | # defining the PIC symbol. | |
660 | ifeq (yes,$(build-pic-default)) | |
661 | pic-default = -DPIC | |
662 | endif | |
663 | ||
664 | # Enable object files for different versions of the library. | |
665 | # Various things use $(object-suffixes) to know what all to make. | |
666 | # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX}) | |
667 | # to pass different flags for each flavor. | |
668 | libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o)) | |
669 | all-object-suffixes := .o .os .op .og .ob .oS | |
670 | object-suffixes := | |
671 | CPPFLAGS-.o = $(pic-default) | |
672 | CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) | |
673 | ifeq (yes,$(build-static)) | |
674 | libtype.o := lib%.a | |
675 | object-suffixes += .o | |
676 | endif | |
677 | ifeq (yes,$(build-shared)) | |
678 | # Under --enable-shared, we will build a shared library of PIC objects. | |
679 | # The PIC object files are named foo.os. | |
680 | object-suffixes += .os | |
681 | CPPFLAGS-.os = -DPIC -DSHARED | |
682 | CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag) | |
683 | libtype.os := lib%_pic.a | |
684 | # This can be changed by a sysdep makefile | |
685 | pic-ccflag = -fPIC | |
686 | # This one should always stay like this unless there is a very good reason. | |
687 | PIC-ccflag = -fPIC | |
688 | endif | |
689 | ifeq (yes,$(build-profile)) | |
690 | # Under --enable-profile, we will build a static library of profiled objects. | |
691 | # The profiled object files are named foo.op. | |
692 | object-suffixes += .op | |
693 | CPPFLAGS-.op = -DPROF $(pic-default) | |
694 | CFLAGS-.op = -pg | |
695 | libtype.op = lib%_p.a | |
696 | endif | |
697 | ifeq (yes,$(build-omitfp)) | |
698 | # Under --enable-omitfp, we build the library optimized without | |
699 | # debugging information using -fomit-frame-pointer, and build an extra | |
700 | # library with debugging information. The debuggable objects are named foo.og. | |
701 | object-suffixes += .og | |
702 | CPPFLAGS-.og = $(pic-default) | |
703 | CFLAGS-.og = -g | |
704 | CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES | |
705 | CFLAGS-.os += -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES | |
706 | libtype.og = lib%_g.a | |
707 | endif | |
708 | ||
709 | bppfx = BP- | |
710 | ifeq (yes,$(build-bounded)) | |
711 | # Under --enable-bounded, we build the library with `-fbounded-pointers -g' | |
712 | # to runtime bounds checking. The bounded-pointer objects are named foo.ob. | |
713 | # We disable sibling-call optimizations so that stack traces will be complete | |
714 | # and thus aid debugging, since after all, BPs are a debugging tool. | |
715 | object-suffixes += .ob | |
716 | CPPFLAGS-.ob = -fbounded-pointers $(pic-default) | |
717 | CFLAGS-.ob = -g -O2 -fno-optimize-sibling-calls -fno-strict-aliasing | |
718 | libtype.ob = lib%_b.a | |
719 | endif | |
720 | ||
721 | object-suffixes-for-libc := $(object-suffixes) | |
722 | ||
723 | ifeq (yes,$(build-shared)) | |
724 | # Build special library that contains the static-only routines for libc. | |
725 | object-suffixes-for-libc += .oS | |
726 | ||
727 | # Must build the routines as PIC, though, because they can end up in (users') | |
728 | # shared objects. We don't want to use CFLAGS-os because users may, for | |
729 | # example, make that processor-specific. | |
730 | CFLAGS-.oS = $(CFLAGS-.o) $(PIC-ccflag) | |
731 | CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC -DLIBC_NONSHARED=1 | |
732 | libtype.oS = lib%_nonshared.a | |
733 | endif | |
734 | ||
735 | # The assembler can generate debug information too. | |
736 | ifndef ASFLAGS | |
737 | ifeq ($(have-cpp-asm-debuginfo),yes) | |
738 | ASFLAGS := $(filter -g%,$(CFLAGS)) | |
739 | else | |
740 | ASFLAGS := | |
741 | endif | |
742 | endif | |
743 | ASFLAGS += $(ASFLAGS-config) | |
744 | ||
745 | +gnu-stabs = $(shell echo>&2 '*** BARF ON ME') | |
746 | ||
747 | ifndef BUILD_CC | |
748 | BUILD_CC = $(CC) | |
749 | endif | |
750 | ||
751 | move-if-change = $(SHELL) $(..)scripts/move-if-change | |
752 | \f | |
753 | -include $(common-objpfx)sysd-dirs | |
754 | ||
755 | ifeq ($(sysd-dirs-done),t) | |
756 | -include $(common-objpfx)sysd-sorted | |
757 | subdirs = $(sorted-subdirs) | |
758 | endif | |
759 | ||
760 | ifeq (yes, $(build-shared)) | |
761 | ||
762 | # This is a pair of implicit rules to preprocess a file with # comments, | |
763 | # %ifdef et al, based on config.h settings or other %include'd files. | |
764 | # We use chained rules instead of a pipeline here so that we can properly | |
765 | # check the exit status of cpp rather than using its bad output when there | |
766 | # is a preprocessing error. Another rule should depend on the output file | |
767 | # `FOO.v', and along with that `FOO.v.i' should be given dependencies | |
768 | # listing both its input files, and any header files that it may reference | |
769 | # (but no commands). | |
770 | %.v.i: $(common-objpfx)config.h | |
771 | sed '/^[ ]*#/d;s/^[ ]*%/#/' $(filter-out FORCE %.h,$^) \ | |
772 | | $(CC) -E -undef $(CPPFLAGS) \ | |
773 | -DASSEMBLER -x assembler-with-cpp - \ | |
774 | > $@T | |
775 | mv -f $@T $@ | |
776 | %.v: %.v.i | |
777 | sed '/^[ ]*#/d;/^[ ]*$$/d' $< > $@T | |
778 | mv -f $@T $@ | |
779 | ||
780 | # Process the shlib-versions file, which tells us what shared library | |
781 | # version numbers to use when we install shared objects on this system. | |
782 | # We need to wait until $(subdirs) is complete. | |
783 | ifeq ($(sysd-sorted-done),t) | |
784 | -include $(common-objpfx)soversions.mk | |
785 | ifndef avoid-generated | |
786 | # This lets add-ons give more-specific matches that override defaults | |
787 | # in the top-level file. | |
788 | $(common-objpfx)shlib-versions.v.i: \ | |
789 | $(wildcard $(patsubst %, $(..)%/shlib-versions,$(add-ons) \ | |
790 | $(config-sysdirs) \ | |
791 | $(subdirs))) \ | |
792 | $(..)shlib-versions | |
793 | ||
794 | soversions-default-setname = $(patsubst %, %,\ | |
795 | $(filter-out %_default,\ | |
796 | $(oldest-abi:%=GLIBC_%))) | |
797 | $(common-objpfx)soversions.i: $(..)scripts/soversions.awk \ | |
798 | $(common-objpfx)shlib-versions.v | |
799 | $(AWK) -v default_setname='$(soversions-default-setname)' \ | |
800 | -v config='$(config-machine)-$(config-vendor)-$(config-os)' \ | |
801 | -f $^ > $@T | |
802 | mv -f $@T $@ | |
803 | $(common-objpfx)soversions.mk: $(common-objpfx)soversions.i | |
804 | (while read lib number setname; do \ | |
805 | case $$number in \ | |
806 | [0-9]*) echo "$$lib.so-version=.$$number"; \ | |
807 | echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\ | |
808 | *) echo "$$lib.so-version=$$number"; \ | |
809 | echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\ | |
810 | esac; \ | |
811 | done; \ | |
812 | echo soversions.mk-done = t;) < $< > $@T; exit 0 | |
813 | mv -f $@T $@ | |
814 | endif | |
815 | endif | |
816 | ||
817 | postclean-generated += soversions.mk soversions.i \ | |
818 | shlib-versions.v shlib-versions.v.i | |
819 | ||
820 | # Generate the header containing the names of all shared libraries. | |
821 | # We use a stamp file to avoid unnecessary recompilations. | |
822 | before-compile += $(common-objpfx)gnu/lib-names.h | |
823 | ifeq ($(soversions.mk-done),t) | |
824 | $(common-objpfx)gnu/lib-names.h: $(common-objpfx)gnu/lib-names.stmp; @: | |
825 | $(common-objpfx)gnu/lib-names.stmp: $(common-objpfx)soversions.mk | |
826 | $(make-target-directory) | |
827 | @rm -f ${@:stmp=T} $@ | |
828 | (echo '/* This file is automatically generated.';\ | |
829 | echo ' It defines macros to allow user program to find the shared';\ | |
830 | echo ' library files which come as part of GNU libc. */';\ | |
831 | echo '#ifndef __GNU_LIB_NAMES_H'; \ | |
832 | echo '#define __GNU_LIB_NAMES_H 1'; \ | |
833 | echo; \ | |
834 | (libs='$(all-sonames)';\ | |
835 | for l in $$libs; do \ | |
836 | name=`echo $$l | sed 's/.*=//'`; \ | |
837 | upname=`echo $$l | sed 's/=.*//' | \ | |
838 | tr 'abcdefghijklmnopqrstuvwxyz-' \ | |
839 | 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \ | |
840 | upname2=`echo $$name | sed 's/[.]so.*//' | \ | |
841 | tr 'abcdefghijklmnopqrstuvwxyz-' \ | |
842 | 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \ | |
843 | echo "#define $${upname}_SO \"$$name\""; \ | |
844 | if test $$upname != $$upname2; then \ | |
845 | echo "#define $${upname2}_SO \"$$name\""; \ | |
846 | fi; \ | |
847 | done;) | sort; \ | |
848 | echo; \ | |
849 | echo '#endif /* gnu/lib-names.h */';) > ${@:stmp=T} | |
850 | $(move-if-change) ${@:stmp=T} ${@:stmp=h} | |
851 | touch $@ | |
852 | endif | |
853 | ||
854 | common-generated += gnu/lib-names.h gnu/lib-names.stmp | |
855 | ||
856 | # The name under which the run-time dynamic linker is installed. | |
857 | # We are currently going for the convention that `/lib/ld.so.1' | |
858 | # names the SVR4/ELF ABI-compliant dynamic linker. | |
859 | ifndef rtld-installed-name | |
860 | ifdef ld.so-version | |
861 | rtld-installed-name = $(ld.so-version) | |
862 | else | |
863 | rtld-installed-name = ld.so.1 | |
864 | endif | |
865 | endif | |
866 | ||
867 | ifndef rtld-version-installed-name | |
868 | rtld-version-installed-name = ld-$(version).so | |
869 | endif | |
870 | ||
871 | endif # build-shared | |
872 | ||
873 | ||
874 | ifeq ($(elf),yes) | |
875 | dlfcn = dlfcn | |
876 | ifeq ($(build-shared),yes) | |
877 | libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version) | |
878 | else | |
879 | libdl = $(common-objpfx)dlfcn/libdl.a | |
880 | endif | |
881 | else | |
882 | ifneq (,$(findstring aix,$(config-os))) | |
883 | ifeq ($(build-shared),yes) | |
884 | dlfcn = dlfcn | |
885 | libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version) | |
886 | else | |
887 | # No libdl without shared libs on AIX | |
888 | dlfcn = | |
889 | libdl = | |
890 | endif | |
891 | else | |
892 | # No ELF, no AIX - no libdl, at least for now. | |
893 | dlfcn = | |
894 | libdl = | |
895 | endif | |
896 | endif | |
897 | ||
898 | # These are the subdirectories containing the library source. The order | |
899 | # is more or less arbitrary. The sorting step will take care of the | |
900 | # dependencies. Only the $(binfmt-subdir) should always be kept at the | |
901 | # end of the list. | |
902 | all-subdirs = csu assert ctype locale intl catgets math setjmp signal \ | |
903 | stdlib stdio-common libio malloc string wcsmbs time dirent \ | |
904 | grp pwd posix io termios resource misc socket sysvipc gmon \ | |
905 | gnulib iconv iconvdata wctype manual shadow po argp \ | |
906 | crypt $(add-ons) nss localedata timezone rt conform debug \ | |
907 | $(sysdep-subdirs) $(dlfcn) $(binfmt-subdir) | |
908 | all-subdirs := $(filter-out $(sysdep-inhibit-subdirs),$(all-subdirs)) | |
909 | ||
910 | # The mach and hurd subdirectories have many generated header files which | |
911 | # much of the rest of the library depends on, so it is best to build them | |
912 | # first (and mach before hurd, at that). The before-compile additions in | |
913 | # sysdeps/{mach,hurd}/Makefile should make it reliably work for these files | |
914 | # not to exist when making in other directories, but it will be slower that | |
915 | # way with more somewhat expensive `make' invocations. | |
916 | subdirs := $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \ | |
917 | $(filter-out mach hurd,$(subdirs)) | |
918 | ||
919 | ifndef avoid-generated | |
920 | all-Subdirs-files = $(wildcard $(config-sysdirs:%=$(..)%/Subdirs)) | |
921 | $(common-objpfx)sysd-dirs: $(common-objpfx)config.make $(all-Subdirs-files) | |
922 | $(AWK) 'BEGIN { subdirs = ""; inhibit = "" }; \ | |
923 | /^#/ { next }; \ | |
924 | /^[^-]/ { subdirs = subdirs " " $$0 }; \ | |
925 | /^-/ { inhibit = inhibit " " substr($$0, 2) }; \ | |
926 | END { printf "sysdep-subdirs =%s\n", subdirs; \ | |
927 | printf "sysdep-inhibit-subdirs =%s\n", inhibit; \ | |
928 | print "sysd-dirs-done = t" }' \ | |
929 | $(patsubst $<,/dev/null,$^) > $@-tmp | |
930 | mv -f $@-tmp $@ | |
931 | ||
932 | all-Depend-files = $(wildcard $(..)*/Depend) | |
933 | $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk $(all-Depend-files) \ | |
934 | $(common-objpfx)sysd-dirs $(..)Makeconfig | |
935 | { { dirs='$(patsubst $(..)%/Depend,%,$(filter %/Depend,$^))'; \ | |
936 | for d in $$dirs; do \ | |
937 | while read on; do \ | |
938 | echo "depend $$d $$on"; \ | |
939 | done < $(..)$$d/Depend; \ | |
940 | done; \ | |
941 | for f in $(all-subdirs); do \ | |
942 | echo $$f; \ | |
943 | done; \ | |
944 | } | $(AWK) -f $< && \ | |
945 | echo sysd-sorted-done = t; \ | |
946 | } > $@-tmp | |
947 | mv -f $@-tmp $@ | |
948 | endif | |
949 | ||
950 | # Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here. | |
951 | sysdep-makeconfigs := $(wildcard $(patsubst %,$(..)%/Makeconfig,\ | |
952 | $(config-sysdirs) $(add-ons))) | |
953 | ||
954 | ifneq (,$(sysdep-makeconfigs)) | |
955 | Makeconfig-doing-sysdep := $(sysdep-makeconfigs) | |
956 | # Before each one, include ourselves again to do the bit below that | |
957 | # will set `Makeconfig-add-on' in an add-on's Makeconfig fragment. | |
958 | include $(foreach M,$(sysdep-makeconfigs),$(..)Makeconfig $M) | |
959 | endif | |
960 | ||
961 | ||
962 | endif # Makeconfig not yet included | |
963 | ||
964 | # The whole body above didn't run when we are included as a subroutine | |
965 | # of ourselves in the sysdep-makeconfigs include line. This bit runs. | |
966 | ifneq (,$(Makeconfig-doing-sysdep)) | |
967 | sysdep-Makeconfig := $(firstword $(Makeconfig-doing-sysdep)) | |
968 | Makeconfig-doing-sysdep := $(filter-out $(sysdep-Makeconfig),\ | |
969 | $(Makeconfig-doing-sysdep)) | |
970 | Makeconfig-add-on := $(filter $(add-ons),$(patsubst $(..)%/Makeconfig,%,\ | |
971 | $(sysdep-Makeconfig))) | |
972 | endif | |
973 | ||
974 | # Local Variables: | |
975 | # mode: makefile | |
976 | # End: |