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1 | # Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98 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 Library General Public License as | |
6 | # published by the Free Software Foundation; either version 2 of the | |
7 | # 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 | # Library General Public License for more details. | |
13 | ||
14 | # You should have received a copy of the GNU Library General Public | |
15 | # License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | # Boston, MA 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 $(common-objpfx)config.make | |
85 | ||
86 | # We have a special subdir for each binary format. | |
87 | # For now, only ELF is fully supported. | |
88 | ifeq ($(elf),yes) | |
89 | binfmt-subdir = elf | |
90 | else | |
91 | # This is probably better than nothing. | |
92 | binfmt-subdir = aout | |
93 | endif | |
94 | ||
95 | # Complete path to sysdep dirs. | |
96 | export full-config-sysdirs := $(addprefix $(..),$(config-sysdirs)) | |
97 | ||
98 | # Run config.status to update config.make and config.h. We don't show the | |
99 | # dependence of config.h to Make, because it is only touched when it | |
100 | # changes and so config.status would be run every time; the dependence of | |
101 | # config.make should suffice to force regeneration and re-exec, and the new | |
102 | # image will notice if config.h changed. | |
103 | $(common-objpfx)config.make: $(common-objpfx)config.status \ | |
104 | $(..)config.make.in $(..)config.h.in | |
105 | cd $(<D); $(SHELL) $(<F) | |
106 | ||
107 | # Find all the sysdeps configure fragments, to make sure we re-run | |
108 | # configure when any of them changes. | |
109 | $(common-objpfx)config.status: $(..)version.h $(..)configure \ | |
110 | $(foreach dir,$(full-config-sysdirs),\ | |
111 | $(wildcard \ | |
112 | $(dir)/Implies) \ | |
113 | $(patsubst %.in,%,\ | |
114 | $(firstword $(wildcard \ | |
115 | $(addprefix $(dir)/,configure configure.in))))) | |
116 | @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \ | |
117 | echo The GNU C library has not been configured. >&2; \ | |
118 | echo Run \`configure\' to configure it before building. >&2; \ | |
119 | echo Try \`configure --help\' for more details. >&2; \ | |
120 | exit 1; fi | |
121 | ||
122 | # We don't want CPPFLAGS to be exported to the command running configure. | |
123 | unexport CPPFLAGS | |
124 | ||
125 | # Get the user's configuration parameters. | |
126 | ifneq ($(wildcard $(..)configparms),) | |
127 | include $(..)configparms | |
128 | endif | |
129 | ifneq ($(objpfx),) | |
130 | ifneq ($(wildcard $(common-objpfx)configparms),) | |
131 | include $(common-objpfx)configparms | |
132 | endif | |
133 | endif | |
134 | \f | |
135 | #### | |
136 | #### These are the configuration variables. You can define values for | |
137 | #### the variables below in the file `configparms'. | |
138 | #### Do NOT edit this file. | |
139 | #### | |
140 | ||
141 | ||
142 | # Set this to either `stdio' or `libio', to compile in either GNU stdio | |
143 | # or GNU libio. | |
144 | ifndef stdio | |
145 | stdio = stdio | |
146 | endif | |
147 | ||
148 | # Common prefix for machine-independent installation directories. | |
149 | ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value. | |
150 | prefix = /usr/local | |
151 | endif | |
152 | ||
153 | # Decide whether we shall build the programs or not. We always do this | |
154 | # unless the user tells us (in configparms) or we are building for a | |
155 | # standalone target. | |
156 | ifndef build-programs | |
157 | ifneq ($(config-os),none) | |
158 | build-programs=yes | |
159 | else | |
160 | build-programs=no | |
161 | endif | |
162 | endif | |
163 | ||
164 | # Common prefix for machine-dependent installation directories. | |
165 | ifeq ($(origin exec_prefix),undefined) | |
166 | exec_prefix = $(prefix) | |
167 | endif | |
168 | ||
169 | # Where to install the library and object files. | |
170 | ifndef libdir | |
171 | libdir = $(exec_prefix)/lib | |
172 | endif | |
173 | inst_libdir = $(install_root)$(libdir) | |
174 | ||
175 | # Where to install the shared library and dynamic linker. | |
176 | ifndef slibdir | |
177 | slibdir = $(exec_prefix)/lib | |
178 | endif | |
179 | inst_slibdir = $(install_root)$(slibdir) | |
180 | ||
181 | # Prefix to put on files installed in $(libdir). For libraries `libNAME.a', | |
182 | # the prefix is spliced between `lib' and the name, so the linker switch | |
183 | # `-l$(libprefix)NAME' finds the library; for other files the prefix is | |
184 | # just prepended to the whole file name. | |
185 | ifeq ($(origin libprefix),undefined) | |
186 | libprefix = | |
187 | endif | |
188 | ||
189 | # Where to install the header files. | |
190 | ifndef includedir | |
191 | includedir = $(exec_prefix)/include | |
192 | endif | |
193 | inst_includedir = $(install_root)$(includedir) | |
194 | ||
195 | # Where to install machine-independent data files. | |
196 | # These are the timezone database, and the locale database. | |
197 | ifndef datadir | |
198 | datadir = $(prefix)/share | |
199 | endif | |
200 | inst_datadir = $(install_root)$(datadir) | |
201 | ||
202 | # Where to install the timezone data files (which are machine-independent). | |
203 | ifndef zonedir | |
204 | zonedir = $(datadir)/zoneinfo | |
205 | endif | |
206 | inst_zonedir = $(install_root)$(zonedir) | |
207 | ||
208 | # Where to install the locale and message catalog data files (which are | |
209 | # machine-independent). | |
210 | ifndef localedir | |
211 | localedir = $(datadir)/locale | |
212 | endif | |
213 | inst_localedir = $(install_root)$(localedir) | |
214 | ||
215 | # Where to install the locale charmap source files. | |
216 | ifndef i18ndir | |
217 | i18ndir = $(datadir)/i18n | |
218 | endif | |
219 | inst_i18ndir = $(install_root)$(i18ndir) | |
220 | ||
221 | # Where to install the shared object for charset transformation. | |
222 | ifndef gconvdir | |
223 | gconvdir = $(libdir)/gconv | |
224 | endif | |
225 | inst_gconvdir = $(install_root)$(gconvdir) | |
226 | ||
227 | # Where to install programs. | |
228 | ifndef bindir | |
229 | bindir = $(exec_prefix)/bin | |
230 | endif | |
231 | inst_bindir = $(install_root)$(bindir) | |
232 | ||
233 | # Where to install internal programs. | |
234 | ifndef libexecdir | |
235 | libexecdir = $(exec_prefix)/libexec | |
236 | endif | |
237 | inst_libexecdir = $(install_root)$(libexecdir) | |
238 | ||
239 | # Where to install administrative programs. | |
240 | ifndef rootsbindir | |
241 | rootsbindir = $(exec_prefix)/sbin | |
242 | endif | |
243 | inst_rootsbindir = $(install_root)$(rootsbindir) | |
244 | ||
245 | ifndef sbindir | |
246 | sbindir = $(exec_prefix)/sbin | |
247 | endif | |
248 | inst_sbindir = $(install_root)$(sbindir) | |
249 | ||
250 | # Where to install the Info files. | |
251 | ifndef infodir | |
252 | infodir = $(prefix)/info | |
253 | endif | |
254 | inst_infodir = $(install_root)$(infodir) | |
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 | # What timezone should be the installed default (e.g., US/Eastern). | |
264 | # Run `make -C time echo-zonenames' to see a list of available zone names. | |
265 | # The local timezone can be changed with `zic -l TIMEZONE' at any time. | |
266 | ifndef localtime | |
267 | localtime = Factory | |
268 | endif | |
269 | ||
270 | # Where to install the "localtime" timezone file; this is the file whose | |
271 | # contents $(localtime) specifies. If this is a relative pathname, it is | |
272 | # relative to $(zonedir). It is a good idea to put this somewhere | |
273 | # other than there, so the zoneinfo directory contains only universal data, | |
274 | # localizing the configuration data elsewhere. | |
275 | ifndef localtime-file | |
276 | localtime-file = $(sysconfdir)/localtime | |
277 | inst_localtime-file = $(install_root)$(localtime-file) | |
278 | endif | |
279 | ||
280 | # What to use for leap second specifications in compiling the default | |
281 | # timezone files. Set this to `/dev/null' for no leap second handling as | |
282 | # 1003.1 requires, or to `leapseconds' for proper leap second handling. | |
283 | # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'. | |
284 | # This variable determines the default: if it's `/dev/null', | |
285 | # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE. | |
286 | ifndef leapseconds | |
287 | leapseconds = /dev/null | |
288 | endif | |
289 | ||
290 | # What timezone's DST rules should be used when a POSIX-style TZ | |
291 | # environment variable doesn't specify any rules. For 1003.1 compliance | |
292 | # this timezone must use rules that are as U.S. federal law defines DST. | |
293 | # Run `make -C time echo-zonenames' to see a list of available zone names. | |
294 | # This setting can be changed with `zic -p TIMEZONE' at any time. | |
295 | # If you want POSIX.1 compatibility, use `America/New_York'. | |
296 | ifndef posixrules | |
297 | posixrules = America/New_York | |
298 | endif | |
299 | ||
300 | # Where to install the "posixrules" timezone file; this is file | |
301 | # whose contents $(posixrules) specifies. If this is a relative | |
302 | # pathname, it is relative to $(zonedir). | |
303 | ifndef posixrules-file | |
304 | posixrules-file = posixrules | |
305 | endif | |
306 | ||
307 | ||
308 | # Directory where your system's native header files live. | |
309 | # This is used on Unix systems to generate some GNU libc header files. | |
310 | ifndef sysincludedir | |
311 | sysincludedir = /usr/include | |
312 | endif | |
313 | ||
314 | ||
315 | # Commands to install files. | |
316 | ifndef INSTALL_DATA | |
317 | INSTALL_DATA = $(INSTALL) -m 644 | |
318 | endif | |
319 | ifndef INSTALL_PROGRAM | |
320 | INSTALL_PROGRAM = $(INSTALL) | |
321 | endif | |
322 | ifndef INSTALL | |
323 | INSTALL = install | |
324 | endif | |
325 | ||
326 | ||
327 | # The name of the C compiler. | |
328 | # If you've got GCC, and it works, use it. | |
329 | ifeq ($(origin CC),default) | |
330 | CC := gcc | |
331 | endif | |
332 | ||
333 | # The name of the C compiler to use for compilations of programs to run on | |
334 | # the host that is building the library. If you set CC to a | |
335 | # cross-compiler, you must set this to the normal compiler. | |
336 | ifndef BUILD_CC | |
337 | BUILD_CC = $(CC) | |
338 | endif | |
339 | ||
340 | # Default flags to pass the C compiler. | |
341 | ifndef default_cflags | |
342 | default_cflags := -g -O | |
343 | endif | |
344 | ||
345 | # Flags to pass the C compiler when assembling preprocessed assembly code | |
346 | # (`.S' files). On some systems the assembler doesn't understand the `#' line | |
347 | # directives the preprocessor produces. If you have troubling compiling | |
348 | # assembly code, try using -P here to suppress these directives. | |
349 | ifndef asm-CPPFLAGS | |
350 | asm-CPPFLAGS = | |
351 | endif | |
352 | ||
353 | # ELF always supports init/fini sections | |
354 | ifeq ($(elf),yes) | |
355 | have-initfini = yes | |
356 | endif | |
357 | ||
358 | # Installed name of the startup code. | |
359 | ifneq ($(have-initfini),yes) | |
360 | # When not having init/fini, there is just one startfile, called crt0.o. | |
361 | start-installed-name = crt0.o | |
362 | else | |
363 | # On systems having init/fini, crt0.o is called crt1.o, and there are | |
364 | # some additional bizarre files. | |
365 | start-installed-name = crt1.o | |
366 | endif | |
367 | ||
368 | ||
369 | # Command for linking programs with the C library. | |
370 | ifndef +link | |
371 | +link = $(CC) -nostdlib -nostartfiles -o $@ \ | |
372 | $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) \ | |
373 | $(addprefix $(csu-objpfx),$(start-installed-name)) \ | |
374 | $(+preinit) $(+prector) \ | |
375 | $(filter-out $(addprefix $(csu-objpfx),start.o \ | |
376 | $(start-installed-name))\ | |
377 | $(+preinit) $(link-extra-libs) \ | |
378 | $(common-objpfx)libc% $(+postinit),$^) \ | |
379 | $(link-extra-libs) $(link-libc) $(+postctor) $(+postinit) | |
380 | endif | |
381 | # Command for statically linking programs with the C library. | |
382 | ifndef +link-static | |
383 | +link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \ | |
384 | $(sysdep-LDFLAGS) $(LDFLAGS) \ | |
385 | $(addprefix $(csu-objpfx),$(start-installed-name)) \ | |
386 | $(+preinit) $(+prector) \ | |
387 | $(filter-out $(addprefix $(csu-objpfx),start.o \ | |
388 | $(start-installed-name))\ | |
389 | $(+preinit) $(link-extra-libs-static) \ | |
390 | $(common-objpfx)libc% $(+postinit),$^) \ | |
391 | $(link-extra-libs-static) $(link-libc-static) $(+postctor) $(+postinit) | |
392 | endif | |
393 | ifndef config-LDFLAGS | |
394 | ifeq (yes,$(build-shared)) | |
395 | config-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name) | |
396 | endif | |
397 | endif | |
398 | ifndef link-libc | |
399 | ifeq (yes,$(build-shared)) | |
400 | # We need the versioned name of libc.so in the deps of $(others) et al | |
401 | # so that the symlink to libc.so is created before anything tries to | |
402 | # run the linked programs. | |
403 | link-libc = -Wl,-rpath-link=$(rpath-link) \ | |
404 | $(common-objpfx)libc.so$(libc.so-version) \ | |
405 | $(common-objpfx)$(patsubst %,$(libtype.oS),c) $(gnulib) | |
406 | # Choose the default search path for the dynamic linker based on | |
407 | # where we will install libraries. | |
408 | ifneq ($(libdir),$(slibdir)) | |
409 | default-rpath = $(slibdir):$(libdir) | |
410 | else | |
411 | default-rpath = $(libdir) | |
412 | endif | |
413 | # This is how to find at build-time things that will be installed there. | |
414 | rpath-dirs = math elf nss nis db2 rt resolv | |
415 | rpath-link = \ | |
416 | $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%))) | |
417 | elfobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)elf) | |
418 | dbobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)db2) | |
419 | else | |
420 | nssobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nss) | |
421 | resolvobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)resolv) | |
422 | link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a | |
423 | endif | |
424 | endif | |
425 | ||
426 | ifndef link-extra-libs | |
427 | ifeq (yes,$(build-shared)) | |
428 | ifneq ($(common-objpfx),$(objpfx)) | |
429 | link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),\ | |
430 | $(wildcard $(common-objpfx)$(lib).so$($(notdir $(lib)).so-version) \ | |
431 | $(objpfx)$(lib).so$($(notdir $(lib)).so-version))) | |
432 | else | |
433 | link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).so$($(notdir $(lib)).so-version)) | |
434 | endif | |
435 | else | |
436 | link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a) | |
437 | endif | |
438 | endif | |
439 | ||
440 | # The static libraries. | |
441 | ifeq (yes,$(build-static)) | |
442 | link-libc-static = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a | |
443 | link-extra-libs-static = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a) | |
444 | else | |
445 | ifeq (yes,$(build-shared)) | |
446 | # We can try to link the programs with lib*_pic.a... | |
447 | link-libc-static = $(gnulib) $(common-objpfx)libc_pic.a | |
448 | link-extra-libs-static = $(link-extra-libs) | |
449 | endif | |
450 | endif | |
451 | ||
452 | ifndef gnulib | |
453 | gnulib := -lgcc | |
454 | endif | |
455 | ifeq ($(elf),yes) | |
456 | +preinit = $(addprefix $(csu-objpfx),crti.o) | |
457 | +postinit = $(addprefix $(csu-objpfx),crtn.o) | |
458 | +prector = `$(CC) --print-file-name=crtbegin.o` | |
459 | +postctor = `$(CC) --print-file-name=crtend.o` | |
460 | +interp = $(addprefix $(elf-objpfx),interp.os) | |
461 | endif | |
462 | csu-objpfx = $(common-objpfx)csu/ | |
463 | elf-objpfx = $(common-objpfx)elf/ | |
464 | ||
465 | # How to run a program we just linked with our library. | |
466 | # The program binary is assumed to be $(word 2,$^). | |
467 | built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^)) | |
468 | ifneq (yes,$(build-shared)) | |
469 | built-program-cmd = $(built-program-file) | |
470 | else | |
471 | comma = , | |
472 | sysdep-library-path = \ | |
473 | $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\ | |
474 | $(filter -Wl$(comma)-rpath-link=%,\ | |
475 | $(sysdep-LDFLAGS))))) | |
476 | define built-program-cmd | |
477 | $(elf-objpfx)$(rtld-installed-name) \ | |
478 | --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \ | |
479 | $(built-program-file) | |
480 | endef | |
481 | endif | |
482 | ||
483 | ifndef LD | |
484 | LD := ld -X | |
485 | endif | |
486 | ||
487 | ifndef RANLIB | |
488 | RANLIB = ranlib | |
489 | endif | |
490 | ||
491 | # Extra flags to pass to GCC. | |
492 | +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes | |
493 | ||
494 | # This is the program that generates makefile | |
495 | # dependencies from C source files. | |
496 | ifndef +mkdep | |
497 | +mkdep = $(CC) -M | |
498 | endif | |
499 | ||
500 | # The program that makes Emacs-style TAGS files. | |
501 | ETAGS := etags -T | |
502 | ||
503 | # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and | |
504 | # perhaps others) to preprocess assembly code in some cases. | |
505 | M4 = m4 | |
506 | ||
507 | # To force installation of files even if they are older than the | |
508 | # installed files. This variable is included in the dependency list | |
509 | # of all installation targets. | |
510 | ifeq ($(force-install),yes) | |
511 | +force = force-install | |
512 | else | |
513 | +force = | |
514 | endif | |
515 | ||
516 | #### | |
517 | #### End of configuration variables. | |
518 | #### | |
519 | \f | |
520 | # This tells some versions of GNU make before 3.63 not to export all variables. | |
521 | .NOEXPORT: | |
522 | ||
523 | # We want to echo the commands we're running without | |
524 | # umpteen zillion filenames along with it (we use `...' instead) | |
525 | # but we don't want this echoing done when the user has said | |
526 | # he doesn't want to see commands echoed by using -s. | |
527 | ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s | |
528 | +cmdecho := echo >/dev/null | |
529 | else # not -s | |
530 | +cmdecho := echo | |
531 | endif # -s | |
532 | ||
533 | # These are the flags given to the compiler to tell | |
534 | # it what sort of optimization and/or debugging output to do. | |
535 | ifndef +cflags | |
536 | # If `CFLAGS' was defined, use that. | |
537 | ifdef CFLAGS | |
538 | +cflags := $(filter-out -I%,$(CFLAGS)) | |
539 | endif # CFLAGS | |
540 | endif # +cflags | |
541 | ||
542 | # If none of the above worked, default to "-g -O". | |
543 | ifeq "$(strip $(+cflags))" "" | |
544 | +cflags := $(default_cflags) | |
545 | endif # $(+cflags) == "" | |
546 | ||
547 | +cflags := $(+cflags) $(+gccwarn) | |
548 | +gcc-nowarn := -w | |
549 | ||
550 | # Don't duplicate options if we inherited variables from the parent. | |
551 | +cflags := $(sort $(+cflags)) | |
552 | ||
553 | ||
554 | # These are flags given to the C compiler to tell it to look for include | |
555 | # files (including ones given in angle brackets) in the current directory, | |
556 | # in the parent library source directory and in the include directory. | |
557 | # `+sysdep-includes' will be defined by Makerules. | |
558 | +includes = -I$(..)include -I. \ | |
559 | $(patsubst %/,-I%,$(objpfx)) $(patsubst %/,-I%,$(..)) \ | |
560 | $($(stdio)-include) $(includes) \ | |
561 | $(+sysdep-includes) $(last-includes) $(sysincludes) | |
562 | ||
563 | # Since libio has several internal header files, we use a -I instead | |
564 | # of many little headers in the include directory. | |
565 | libio-include = -I$(..)libio | |
566 | ||
567 | # These are the variables that the implicit compilation rules use. | |
568 | CPPFLAGS = $($(subdir)-CPPFLAGS) $(+includes) $(defines) \ | |
569 | -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \ | |
570 | $(CPPFLAGS-$(suffix $@)) $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) | |
571 | override CFLAGS = $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \ | |
572 | $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F)) | |
573 | ||
574 | # If everything is compiled with -fPIC (implicitly) we must tell this by | |
575 | # defining the PIC symbol. | |
576 | ifeq (yes,$(build-pic-default)) | |
577 | pic-default = -DPIC | |
578 | endif | |
579 | ||
580 | # Enable object files for different versions of the library. | |
581 | # Various things use $(object-suffixes) to know what all to make. | |
582 | # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX}) | |
583 | # to pass different flags for each flavor. | |
584 | libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o)) | |
585 | all-object-suffixes := .o .os .op .og .ob .oS | |
586 | object-suffixes := | |
587 | CPPFLAGS-.o = $(pic-default) | |
588 | CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) | |
589 | ifeq (yes,$(build-static)) | |
590 | libtype.o := lib%.a | |
591 | object-suffixes += .o | |
592 | endif | |
593 | ifeq (yes,$(build-shared)) | |
594 | # Under --enable-shared, we will build a shared library of PIC objects. | |
595 | # The PIC object files are named foo.os. | |
596 | object-suffixes += .os | |
597 | CPPFLAGS-.os = -DPIC | |
598 | CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag) | |
599 | libtype.os := lib%_pic.a | |
600 | # This can be changed by a sysdep makefile | |
601 | pic-ccflag = -fPIC | |
602 | endif | |
603 | ifeq (yes,$(build-profile)) | |
604 | # Under --enable-profile, we will build a static library of profiled objects. | |
605 | # The profiled object files are named foo.op. | |
606 | object-suffixes += .op | |
607 | CPPFLAGS-.op = -DPROF $(pic-default) | |
608 | CFLAGS-.op = -pg | |
609 | libtype.op = lib%_p.a | |
610 | endif | |
611 | ifeq (yes,$(build-omitfp)) | |
612 | # Under --enable-omitfp, we build an the library optimized without | |
613 | # debugging information using -fomit-frame-pointer, and build an extra | |
614 | # library with debugging information. The debuggable objects are named foo.og. | |
615 | object-suffixes += .og | |
616 | CPPFLAGS-.og = $(pic-default) | |
617 | CFLAGS-.og = -g | |
618 | CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES | |
619 | CFLAGS-.os += -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES | |
620 | libtype.og = lib%_g.a | |
621 | endif | |
622 | ifeq (yes,$(build-bounded)) | |
623 | # Under --enable-bounded, we build the library with `-fbounded-pointers -g' | |
624 | # to runtime bounds checking. The bounded-pointer objects are named foo.ob. | |
625 | object-suffixes += .ob | |
626 | CPPFLAGS-.ob = -DBOUNDED_POINTERS $(pic-default) | |
627 | CFLAGS-.ob = -g -fbounded-pointers | |
628 | libtype.ob = lib%_b.a | |
629 | endif | |
630 | ||
631 | object-suffixes-for-libc := $(object-suffixes) | |
632 | ||
633 | ifeq (yes,$(build-shared)) | |
634 | # Build special library that contains the static-only routines for libc. | |
635 | object-suffixes-for-libc += .oS | |
636 | ||
637 | # Must build the routines as PIC, though, because they can end up in (users') | |
638 | # shared objects. We don't want to use CFLAGS-os because users may, for | |
639 | # example, make that processor-specific. | |
640 | CFLAGS-.oS = $(CFLAGS-.o) $(pic-ccflag) | |
641 | CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC | |
642 | libtype.oS = lib%_nonshared.a | |
643 | endif | |
644 | ||
645 | ||
646 | +gnu-stabs = $(shell echo>&2 '*** BARF ON ME') | |
647 | ||
648 | ifndef BUILD_CC | |
649 | BUILD_CC = $(CC) | |
650 | endif | |
651 | ||
652 | move-if-change = $(SHELL) $(..)scripts/move-if-change | |
653 | \f | |
654 | ||
655 | ifeq (yes, $(build-shared)) | |
656 | ||
657 | # Process the shlib-versions file, which tells us what shared library | |
658 | # version numbers to use when we install shared objects on this system. | |
659 | -include $(common-objpfx)soversions.mk | |
660 | ifndef avoid-generated | |
661 | $(common-objpfx)soversions.mk: $(..)shlib-versions $(..)Makeconfig \ | |
662 | $(wildcard $(patsubst %, $(..)%/shlib-versions,\ | |
663 | $(add-ons))) \ | |
664 | $(common-objpfx)config.make | |
665 | (file="$(wildcard $(patsubst %,$(..)%/shlib-versions,$(add-ons))) \ | |
666 | $(..)shlib-versions"; \ | |
667 | for f in $$file; do \ | |
668 | sed 's/#.*$$//' $$f | while read conf versions; do \ | |
669 | test -n "$$versions" && \ | |
670 | test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \ | |
671 | : "$$conf"` != 0 || continue; \ | |
672 | for v in $$versions; do \ | |
673 | lib=`echo $$v | sed 's/=.*$$//'`; \ | |
674 | if eval "test -z \"\$$vers_lib$$lib\""; then \ | |
675 | eval vers_lib$${lib}=yes; \ | |
676 | number=`echo $$v | sed "s/^.*=//"`; \ | |
677 | case $$number in \ | |
678 | [0-9]*) echo "$$lib.so-version=.$$number"; \ | |
679 | echo "all-sonames+=$$lib.so\$$($$lib.so-version)";;\ | |
680 | *) echo "$$lib.so-version=$$number"; \ | |
681 | echo "all-sonames+=\$$($$lib.so-version)";; \ | |
682 | esac; \ | |
683 | fi; \ | |
684 | done; \ | |
685 | done; \ | |
686 | done;) > $@T; exit 0 | |
687 | mv -f $@T $@ | |
688 | endif | |
689 | ||
690 | postclean-generated += soversions.mk | |
691 | ||
692 | # Generate the header containing the names of all shared libraries. | |
693 | # We use a stamp file to avoid uncessary recompilations. | |
694 | before-compile += $(common-objpfx)gnu/lib-names.h | |
695 | $(common-objpfx)gnu/lib-names.h: $(common-objpfx)gnu/lib-names.stmp; @: | |
696 | $(common-objpfx)gnu/lib-names.stmp: $(common-objpfx)soversions.mk | |
697 | $(make-target-directory) | |
698 | @rm -f ${@:stmp=T} $@ | |
699 | (echo '/* This file is automatically generated.';\ | |
700 | echo ' It defines macros to allow user program to find the shared';\ | |
701 | echo ' library files which come as part of GNU libc. */';\ | |
702 | echo '#ifndef __GNU_LIB_NAMES_H'; \ | |
703 | echo '#define __GNU_LIB_NAMES_H 1'; \ | |
704 | echo; \ | |
705 | (libs='$(all-sonames)';\ | |
706 | for l in $$libs; do \ | |
707 | upname=`echo $$l | sed 's/[.]so.*//' | \ | |
708 | tr 'abcdefghijklmnopqrstuvwxyz-' \ | |
709 | 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \ | |
710 | echo "#define $${upname}_SO \"$$l\""; \ | |
711 | done;) | sort; \ | |
712 | echo; \ | |
713 | echo '#endif /* gnu/lib-names.h */';) > ${@:stmp=T} | |
714 | $(move-if-change) ${@:stmp=T} ${@:stmp=h} | |
715 | touch $@ | |
716 | ||
717 | common-generated += gnu/lib-names.h gnu/lib-names.stmp | |
718 | ||
719 | # The name under which the run-time dynamic linker is installed. | |
720 | # We are currently going for the convention that `/lib/ld.so.1' | |
721 | # names the SVR4/ELF ABI-compliant dynamic linker. | |
722 | ifndef rtld-installed-name | |
723 | ifdef ld.so-version | |
724 | rtld-installed-name = $(ld.so-version) | |
725 | else | |
726 | rtld-installed-name = ld.so.1 | |
727 | endif | |
728 | endif | |
729 | ||
730 | ifndef rtld-version-installed-name | |
731 | rtld-version-installed-name = ld-$(version).so | |
732 | endif | |
733 | ||
734 | endif # build-shared | |
735 | ||
736 | ifneq (,$(findstring linuxthreads,$(add-ons))) | |
737 | shared-thread-library = $(common-objpfx)linuxthreads/libpthread.so | |
738 | static-thread-library = $(common-objpfx)linuxthreads/libpthread.a | |
739 | have-thread-library = yes | |
740 | rpath-dirs += linuxthreads | |
741 | endif | |
742 | ||
743 | ifndef avoid-generated | |
744 | -include $(common-objpfx)sysd-dirs | |
745 | endif | |
746 | ||
747 | # These are the subdirectories containing the library source. The order | |
748 | # is more or less arbitrary. The sorting step will take care of the | |
749 | # dependencies. Only the $(binfmt-subdir) should always be kept at the | |
750 | # end of the list. | |
751 | all-subdirs = csu assert ctype db db2 locale intl catgets math setjmp signal\ | |
752 | stdlib stdio-common $(stdio) malloc string wcsmbs time dirent \ | |
753 | grp pwd posix io termios resource misc socket sysvipc gmon \ | |
754 | gnulib iconv iconvdata wctype manual shadow md5-crypt po argp \ | |
755 | $(add-ons) nss localedata timezone rt debug $(sysdep-subdirs) \ | |
756 | $(binfmt-subdir) | |
757 | all-subdirs := $(filter-out $(sysdep-inhibit-subdirs),$(all-subdirs)) | |
758 | ||
759 | ifeq ($(sysd-dirs-done),t) | |
760 | -include $(common-objpfx)sysd-sorted | |
761 | subdirs = $(sorted-subdirs) | |
762 | endif | |
763 | ||
764 | # The mach and hurd subdirectories have many generated header files which | |
765 | # much of the rest of the library depends on, so it is best to build them | |
766 | # first (and mach before hurd, at that). The before-compile additions in | |
767 | # sysdeps/{mach,hurd}/Makefile should make it reliably work for these files | |
768 | # not to exist when making in other directories, but it will be slower that | |
769 | # way with more somewhat expensive `make' invocations. | |
770 | subdirs := $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \ | |
771 | $(filter-out mach hurd,$(subdirs)) | |
772 | ||
773 | all-Subdirs-files = $(wildcard $(config-sysdirs:%=$(..)%/Subdirs)) | |
774 | $(common-objpfx)sysd-dirs: $(common-objpfx)config.make $(all-Subdirs-files) | |
775 | $(AWK) 'BEGIN { subdirs = ""; inhibit = "" }; \ | |
776 | /^#/ { next }; \ | |
777 | /^[^-]/ { subdirs = subdirs " " $$0 }; \ | |
778 | /^-/ { inhibit = inhibit " " substr($$0, 2) }; \ | |
779 | END { printf "sysdep-subdirs =%s\n", subdirs; \ | |
780 | printf "sysdep-inhibit-subdirs =%s\n", inhibit; \ | |
781 | print "sysd-dirs-done = t" }' \ | |
782 | $(patsubst $<,/dev/null,$^) > $@-tmp | |
783 | mv -f $@-tmp $@ | |
784 | ||
785 | all-Depend-files = $(wildcard $(..)*/Depend) | |
786 | $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk $(all-Depend-files) \ | |
787 | $(common-objpfx)sysd-dirs $(..)Makeconfig | |
788 | (dirs='$(patsubst $(..)%/Depend,%,$(filter %/Depend, $^))'; \ | |
789 | for d in $$dirs; do \ | |
790 | while read on; do \ | |
791 | echo "depend $$d $$on"; \ | |
792 | done < $$d/Depend; \ | |
793 | done; \ | |
794 | for f in $(all-subdirs); do \ | |
795 | echo $$f; \ | |
796 | done \ | |
797 | ) | $(AWK) -f $< > $@-tmp | |
798 | mv -f $@-tmp $@ | |
799 | ||
800 | endif # Makeconfig not yet included |