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d99d7e26 | 1 | # Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc. |
28f540f4 RM |
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 | |
16 | # not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
17 | # Cambridge, MA 02139, 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 | ifneq "$(origin +included-Makeconfig)" "file" | |
27 | ||
28 | +included-Makeconfig := yes | |
29 | ||
30 | ifdef subdir | |
31 | .. := ../ | |
32 | endif | |
33 | ||
34 | # If config.make exists, the source directory was configured, | |
35 | # so don't try to be clever and find another directory to build in. | |
36 | ifneq (,$(wildcard $(..)config.make)) | |
37 | ARCH = | |
38 | machine = | |
39 | else # Not configured. | |
40 | ifndef ARCH | |
41 | ifdef machine | |
42 | ARCH = $(machine) | |
43 | endif # machine | |
44 | endif # ARCH | |
45 | endif # config.make | |
46 | ||
47 | # Directory for object files and libc.a. If this is not defined, the | |
48 | # object files live in the subdirectories where their sources live, and | |
49 | # libc.a lives in the parent directory (this probably doesn't work any | |
50 | # more). | |
51 | ifdef ARCH | |
52 | ifeq ($(filter /%,$(ARCH)),) | |
53 | objdir := $(..)$(ARCH) | |
54 | else | |
55 | objdir = $(ARCH) | |
56 | endif | |
57 | endif | |
58 | ||
094bacdb | 59 | # $(common-objdir) is the place to put objects and |
28f540f4 RM |
60 | # such that are not specific to a single subdir. |
61 | ifdef objdir | |
62 | objpfx = $(objdir)/ | |
63 | common-objpfx = $(objpfx) | |
64 | common-objdir = $(objdir) | |
65 | else | |
66 | objpfx := | |
67 | ifdef .. | |
68 | common-objpfx = $(..) | |
69 | common-objdir = .. | |
70 | else | |
71 | # This is a kludge. make wizards might grok. | |
72 | common-objpfx = sysdeps/../ | |
73 | common-objdir = . | |
74 | endif | |
75 | endif | |
76 | ||
f332db02 RM |
77 | # Root of the sysdeps tree. |
78 | sysdep_dir := $(..)sysdeps | |
79 | export sysdep_dir := $(sysdep_dir) | |
80 | ||
28f540f4 RM |
81 | |
82 | # Get the values defined by options to `configure'. | |
83 | include $(common-objpfx)config.make | |
84 | ||
273d56ce RM |
85 | # Run config.status to update config.make and config.h. We don't show the |
86 | # dependence of config.h to Make, because it is only touched when it | |
87 | # changes and so config.status would be run every time; the dependence of | |
88 | # config.make should suffice to force regeneration and re-exec, and the new | |
89 | # image will notice if config.h changed. | |
d43e0478 | 90 | $(common-objpfx)config.make: $(common-objpfx)config.status $(..)config.h.in |
273d56ce RM |
91 | cd $(<D); $(SHELL) $(<F) |
92 | ||
7da3079b RM |
93 | # Find all the sysdeps configure fragments, to make sure we re-run |
94 | # configure when any of them changes. | |
f332db02 RM |
95 | $(common-objpfx)config.status: $(..)configure \ |
96 | $(foreach dir,$(config-sysdirs),\ | |
e50ec9f9 RM |
97 | $(wildcard \ |
98 | $(sysdep_dir)/$(dir)/Implies) \ | |
f332db02 RM |
99 | $(patsubst %.in,%,\ |
100 | $(firstword $(wildcard \ | |
e50ec9f9 | 101 | $(addprefix $(sysdep_dir)/$(dir)/,configure configure.in))))) |
273d56ce RM |
102 | @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \ |
103 | echo The GNU C library has not been configured. >&2; \ | |
104 | echo Run \`configure\' to configure it before building. >&2; \ | |
105 | echo Try \`configure --help\' for more details. >&2; \ | |
106 | exit 1; fi | |
28f540f4 RM |
107 | |
108 | # Get the user's configuration parameters. | |
109 | ifneq ($(wildcard $(..)configparms),) | |
110 | include $(..)configparms | |
111 | endif | |
112 | ifneq ($(objpfx),) | |
113 | ifneq ($(wildcard $(objpfx)configparms),) | |
114 | include $(objpfx)configparms | |
115 | endif | |
116 | endif | |
28f540f4 RM |
117 | \f |
118 | #### | |
119 | #### These are the configuration variables. You can define values for | |
120 | #### the variables below in the file `configparms'. | |
121 | #### Do NOT edit this file. | |
122 | #### | |
123 | ||
124 | ||
deab9dea RM |
125 | # Set this to either `stdio' or `libio', to compile in either GNU stdio |
126 | # or GNU libio. | |
127 | ifndef stdio | |
128 | stdio = stdio | |
129 | endif | |
130 | ||
28f540f4 | 131 | # Common prefix for machine-independent installation directories. |
487253ea | 132 | ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value. |
28f540f4 RM |
133 | prefix = /usr/local |
134 | endif | |
135 | ||
136 | # Common prefix for machine-dependent installation directories. | |
487253ea | 137 | ifeq ($(origin exec_prefix),undefined) |
28f540f4 RM |
138 | exec_prefix = $(prefix) |
139 | endif | |
140 | ||
141 | # Where to install the library and object files. | |
142 | ifndef libdir | |
143 | libdir = $(exec_prefix)/lib | |
144 | endif | |
145 | ||
094bacdb RM |
146 | # Where to install the shared library and dynamic linker. |
147 | ifndef slibdir | |
148 | slibdir = $(exec_prefix)/lib | |
149 | endif | |
150 | ||
28f540f4 RM |
151 | # Prefix to put on files installed in $(libdir). For libraries `libNAME.a', |
152 | # the prefix is spliced between `lib' and the name, so the linker switch | |
153 | # `-l$(libprefix)NAME' finds the library; for other files the prefix is | |
154 | # just prepended to the whole file name. | |
487253ea | 155 | ifeq ($(origin libprefix),undefined) |
28f540f4 RM |
156 | libprefix = |
157 | endif | |
158 | ||
159 | # Where to install the header files. | |
160 | ifndef includedir | |
161 | includedir = $(exec_prefix)/include | |
162 | endif | |
163 | ||
28f540f4 | 164 | # Where to install machine-independent data files. |
a2fe9c76 | 165 | # These are the timezone database, and the locale database. |
28f540f4 RM |
166 | ifndef datadir |
167 | datadir = $(prefix)/share | |
168 | endif | |
169 | ||
170 | # Where to install the timezone data files (which are machine-independent). | |
171 | ifndef zonedir | |
172 | zonedir = $(datadir)/zoneinfo | |
173 | endif | |
174 | ||
3ec41e03 RM |
175 | # Where to install the locale and message catalog data files (which are |
176 | # machine-independent). | |
a2fe9c76 RM |
177 | ifndef localedir |
178 | localedir = $(datadir)/locale | |
179 | endif | |
180 | ||
3ec41e03 | 181 | # Where to install the locale charmap source files. |
19bc17a9 RM |
182 | ifndef i18ndir |
183 | i18ndir = $(datadir)/i18n | |
a2fe9c76 RM |
184 | endif |
185 | ||
186 | ||
28f540f4 RM |
187 | # Where to install programs. |
188 | ifndef bindir | |
189 | bindir = $(exec_prefix)/bin | |
190 | endif | |
191 | ||
192 | # Where to install administrative programs. | |
193 | ifndef sbindir | |
194 | sbindir = $(exec_prefix)/sbin | |
195 | endif | |
196 | ||
197 | # Where to install the Info files. | |
198 | ifndef infodir | |
199 | infodir = $(prefix)/info | |
200 | endif | |
201 | ||
202 | # Where to install default configuration files. These include the local | |
203 | # timezone specification and network data base files. | |
204 | ifndef sysconfdir | |
205 | sysconfdir = $(prefix)/etc | |
206 | endif | |
207 | ||
208 | # What timezone should be the installed default (e.g., US/Eastern). | |
209 | # Run `make -C time echo-zonenames' to see a list of available zone names. | |
210 | # The local timezone can be changed with `zic -l TIMEZONE' at any time. | |
211 | ifndef localtime | |
212 | localtime = Factory | |
213 | endif | |
214 | ||
215 | # Where to install the "localtime" timezone file; this is the file whose | |
216 | # contents $(localtime) specifies. If this is a relative pathname, it is | |
217 | # relative to $(zonedir). It is a good idea to put this somewhere | |
218 | # other than there, so the zoneinfo directory contains only universal data, | |
219 | # localizing the configuration data elsewhere. | |
220 | ifndef localtime-file | |
221 | localtime-file = $(sysconfdir)/localtime | |
222 | endif | |
223 | ||
59dd8641 RM |
224 | # What to use for leap second specifications in compiling the default |
225 | # timezone files. Set this to `/dev/null' for no leap second handling as | |
226 | # 1003.1 requires, or to `leapseconds' for proper leap second handling. | |
227 | # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'. | |
228 | # This variable determines the default: if it's `/dev/null', | |
229 | # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE. | |
230 | ifndef leapseconds | |
231 | leapseconds = /dev/null | |
232 | endif | |
233 | ||
28f540f4 RM |
234 | # What timezone's DST rules should be used when a POSIX-style TZ |
235 | # environment variable doesn't specify any rules. For 1003.1 compliance | |
236 | # this timezone must use rules that are as U.S. federal law defines DST. | |
237 | # Run `make -C time echo-zonenames' to see a list of available zone names. | |
238 | # This setting can be changed with `zic -p TIMEZONE' at any time. | |
239 | # If you want POSIX.1 compatibility, use `America/New_York'. | |
240 | ifndef posixrules | |
241 | posixrules = America/New_York | |
242 | endif | |
243 | ||
244 | # Where to install the "posixrules" timezone file; this is file | |
245 | # whose contents $(posixrules) specifies. If this is a relative | |
246 | # pathname, it is relative to $(zonedir). | |
247 | ifndef posixrules-file | |
248 | posixrules-file = posixrules | |
249 | endif | |
250 | ||
251 | ||
252 | # Directory where your system's native header files live. | |
253 | # This is used on Unix systems to generate some GNU libc header files. | |
254 | ifndef sysincludedir | |
255 | sysincludedir = /usr/include | |
256 | endif | |
257 | ||
258 | ||
259 | # Commands to install files. | |
260 | ifndef INSTALL_DATA | |
261 | INSTALL_DATA = $(INSTALL) -m 644 | |
262 | endif | |
263 | ifndef INSTALL_PROGRAM | |
264 | INSTALL_PROGRAM = $(INSTALL) | |
265 | endif | |
266 | ifndef INSTALL | |
267 | INSTALL = install | |
268 | endif | |
269 | ||
270 | ||
271 | # The name of the C compiler. | |
272 | # If you've got GCC, and it works, use it. | |
273 | ifeq ($(origin CC),default) | |
274 | CC := gcc | |
275 | endif | |
276 | ||
277 | # The name of the C compiler to use for compilations of programs to run on | |
278 | # the host that is building the library. If you set CC to a | |
279 | # cross-compiler, you must set this to the normal compiler. | |
280 | ifndef BUILD_CC | |
281 | BUILD_CC = $(CC) | |
282 | endif | |
283 | ||
284 | # Default flags to pass the C compiler. | |
285 | ifndef default_cflags | |
286 | default_cflags := -g | |
287 | endif | |
288 | ||
289 | # Flags to pass the C compiler when assembling preprocessed assembly code | |
290 | # (`.S' files). On some systems the assembler doesn't understand the `#' line | |
291 | # directives the preprocessor produces. If you have troubling compiling | |
292 | # assembly code, try using -P here to suppress these directives. | |
293 | ifndef asm-CPPFLAGS | |
294 | asm-CPPFLAGS = | |
295 | endif | |
296 | ||
297 | # Command for linking programs with the C library. | |
298 | ifndef +link | |
8e3cc80f RM |
299 | +link = $(CC) -nostdlib -nostartfiles -o $@ \ |
300 | $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) \ | |
301 | $(addprefix $(csu-objpfx),start.o $(+preinit)) \ | |
1fe58993 | 302 | $(filter-out $(common-objpfx)libc%,$^) $(link-libc) \ |
8e3cc80f | 303 | $(addprefix $(csu-objpfx),$(+postinit)) |
28f540f4 | 304 | endif |
b122c703 RM |
305 | ifndef config-LDFLAGS |
306 | ifeq (yes,$(build-shared)) | |
094bacdb | 307 | config-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name) |
b122c703 RM |
308 | endif |
309 | endif | |
3fe9de0d RM |
310 | ifndef link-libc |
311 | ifeq (yes,$(build-shared)) | |
aa1075ea RM |
312 | # We need the versioned name of libc.so in the deps of $(others) et al |
313 | # so that the symlink to libc.so is created before anything tries to | |
314 | # run the linked programs. | |
4d6acc61 | 315 | link-libc = -Wl,-rpath-link=$(rpath-link) \ |
aa1075ea | 316 | $(common-objpfx)libc.so$(libc.so-version) \ |
852fc4b9 | 317 | $(elfobjdir)/$(rtld-installed-name) \ |
aa1075ea | 318 | $(common-objpfx)libc.a $(gnulib) |
4cb20290 RM |
319 | # Choose the default search path for the dynamic linker based on |
320 | # where we will install libraries. | |
321 | ifneq ($(libdir),$(slibdir)) | |
322 | default-rpath = $(slibdir):$(libdir) | |
323 | else | |
324 | default-rpath = $(libdir) | |
325 | endif | |
4d6acc61 | 326 | # This is how to find at build-time things that will be installed there. |
5f0e6fc7 RM |
327 | rpath-link = $(common-objdir):$(elfobjdir):$(nssobjdir) |
328 | nssobjdir := $(firstword $(objdir) $(patsubst ../$(subdir),.,$(..)nss)) | |
3fe9de0d RM |
329 | else |
330 | link-libc = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a | |
331 | endif | |
332 | endif | |
28f540f4 RM |
333 | ifndef gnulib |
334 | gnulib := -lgcc | |
335 | endif | |
96f873b9 RM |
336 | ifeq ($(elf),yes) |
337 | +preinit = crti.o | |
338 | +postinit = crtn.o | |
339 | endif | |
340 | ifdef objpfx | |
341 | csu-objpfx = $(objpfx) | |
03a75825 | 342 | elf-objpfx = $(objpfx) |
96f873b9 | 343 | else |
883bc19b | 344 | csu-objpfx = $(..)csu/ |
03a75825 | 345 | elf-objpfx = $(..)elf/ |
96f873b9 | 346 | endif |
28f540f4 | 347 | |
b122c703 RM |
348 | ifeq (yes,$(build-shared)) |
349 | ifndef rtld-installed-name | |
350 | rtld-installed-name = ld.so | |
351 | endif | |
352 | endif | |
353 | ||
03a75825 RM |
354 | # How to run a program we just linked with our library. |
355 | # The program binary is assumed to be $(word 2,$^). | |
356 | built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^)) | |
357 | ifneq (yes,$(build-shared)) | |
358 | built-program-cmd = $(built-program-file) | |
359 | else | |
196980f5 | 360 | comma = , |
03a75825 | 361 | define built-program-cmd |
4d6acc61 RM |
362 | LD_LIBRARY_PATH=$(rpath-link)$(patsubst -Wl$(comma)-rpath-link=%,:%,\ |
363 | $(filter -Wl$(comma)-rpath-link=%,\ | |
364 | $(sysdep-LDFLAGS))) \ | |
96bda0ea | 365 | $(elf-objpfx)$(rtld-installed-name) $(built-program-file) |
03a75825 RM |
366 | endef |
367 | endif | |
368 | ||
28f540f4 RM |
369 | ifndef LD |
370 | LD := ld -X | |
371 | endif | |
372 | ||
373 | ifndef RANLIB | |
374 | RANLIB = ranlib | |
375 | endif | |
376 | ||
377 | # Extra flags to pass to GCC. | |
522548fb | 378 | +gccwarn := -Wall -Wwrite-strings -Wno-parentheses -Winline -Wstrict-prototypes |
28f540f4 RM |
379 | |
380 | # This is the program that generates makefile | |
381 | # dependencies from C source files. | |
382 | ifndef +mkdep | |
383 | +mkdep = $(CC) -M | |
384 | endif | |
385 | ||
386 | # The program that makes Emacs-style TAGS files. | |
387 | ETAGS := etags -T | |
388 | ||
389 | # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and | |
390 | # perhaps others) to preprocess assembly code in some cases. | |
391 | M4 = m4 | |
392 | ||
393 | #### | |
394 | #### End of configuration variables. | |
395 | #### | |
396 | \f | |
397 | # This tells some versions of GNU make before 3.63 not to export all variables. | |
398 | .NOEXPORT: | |
399 | ||
400 | # We want to echo the commands we're running without | |
401 | # umpteem zillion filenames along with it (we use `...' instead) | |
402 | # but we don't want this echoing done when the user has said | |
403 | # he doesn't want to see commands echoed by using -s. | |
404 | ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s | |
405 | +cmdecho := echo >/dev/null | |
406 | else # not -s | |
407 | +cmdecho := echo | |
408 | endif # -s | |
409 | ||
410 | # These are the flags given to the compiler to tell | |
411 | # it what sort of optimization and/or debugging output to do. | |
412 | ifndef +cflags | |
413 | # If `CFLAGS' was defined, use that. | |
414 | ifdef CFLAGS | |
415 | +cflags := $(filter-out -I%,$(CFLAGS)) | |
416 | endif # CFLAGS | |
417 | endif # +cflags | |
418 | ||
419 | # If none of the above worked, default to "-g". | |
420 | ifeq "$(strip $(+cflags))" "" | |
421 | +cflags := $(default_cflags) | |
422 | endif # $(+cflags) == "" | |
423 | ||
28f540f4 RM |
424 | +cflags := $(+cflags) $(+gccwarn) |
425 | +gcc-nowarn := -w | |
28f540f4 RM |
426 | |
427 | # Don't duplicate options if we inherited variables from the parent. | |
428 | +cflags := $(sort $(+cflags)) | |
429 | ||
430 | ||
431 | # These are flags given to the C compiler to tell it to look for include | |
432 | # files (including ones given in angle brackets) in the current directory | |
433 | # and in the parent library source directory. | |
434 | # `+sysdep-includes' will be defined by Makerules. | |
96aa2d94 | 435 | +includes = -I. $(filter-out -I,-I$(patsubst %/,%,$(..))) $($(stdio)-include) \ |
28f540f4 RM |
436 | $(includes) $(+sysdep-includes) $(last-includes) |
437 | ||
96aa2d94 RM |
438 | # Since libio has several internal header files, we use a -I instead |
439 | # of many little headers in the top level source directory. | |
440 | libio-include = -I$(..)libio | |
28f540f4 RM |
441 | |
442 | # These are the variables that the implicit compilation rules use. | |
443 | CPPFLAGS = $(+includes) $(defines) -include $(..)libc-symbols.h \ | |
53afa8d9 | 444 | $(sysdep-CPPFLAGS) $(CPPFLAGS-$(suffix $@)) |
d99d7e26 RM |
445 | override CFLAGS = $(+cflags) $(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) \ |
446 | $(CFLAGS-$(<F)) | |
28f540f4 RM |
447 | |
448 | ||
449 | # This is the macro that the implicit linking rules use. | |
450 | ifneq "$(filter -g,$(+cflags))" "" # -g is in $(+cflags) | |
451 | LDFLAGS := -g | |
452 | endif | |
453 | ||
f0bf9cb9 RM |
454 | |
455 | # Enable object files for different versions of the library. | |
456 | # Various things use $(object-suffixes) to know what all to make. | |
457 | # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX}) | |
458 | # to pass different flags for each flavor. | |
459 | libtypes = $(foreach o,$(object-suffixes),$(libtype$o)) | |
460 | object-suffixes := .o | |
461 | libtype.o := lib%.a | |
462 | ifeq (yes,$(build-shared)) | |
463 | # Under --enable-shared, we will build a shared library of PIC objects. | |
464 | # The PIC object files are named foo.so. | |
465 | object-suffixes += .so | |
466 | CPPFLAGS-.so = -DPIC | |
467 | CFLAGS-.so = -fPIC | |
468 | libtype.so := lib%_pic.a | |
469 | endif | |
470 | ifeq (yes,$(build-profile)) | |
471 | # Under --enable-profile, we will build a static library of profiled objects. | |
472 | # The profiled object files are named foo.po. | |
473 | object-suffixes += .po | |
a182affd | 474 | CPPFLAGS-.po = -DPROF |
7c97bb09 | 475 | CFLAGS-.po = -pg |
f0bf9cb9 RM |
476 | libtype.po = lib%_p.a |
477 | endif | |
478 | ifeq (yes,$(build-omitfp)) | |
479 | # Under --enable-omitfp, we build an the library optimized without | |
480 | # debugging information using -fomit-frame-pointer, and build an extra | |
481 | # library with debugging information. The debuggable objects are named foo.go. | |
482 | object-suffixes += .go | |
483 | CFLAGS-.go = -g | |
484 | CFLAGS-.o = -g0 -O99 -fomit-frame-pointer | |
485 | CFLAGS-.so += $(CFLAGS.o) | |
486 | libtype.go = lib%_g.a | |
487 | endif | |
488 | ||
489 | ||
28f540f4 RM |
490 | +gnu-stabs = $(shell echo>&2 '*** BARF ON ME') |
491 | ||
96bda0ea RM |
492 | ifndef BUILD_CC |
493 | BUILD_CC = $(CC) | |
494 | endif | |
495 | ||
28f540f4 RM |
496 | ifneq ($(BUILD_CC),$(CC)) |
497 | cross-compiling := yes | |
498 | else | |
499 | cross-compiling := no | |
500 | endif | |
a641835a RM |
501 | \f |
502 | # Figure out the version numbers from version.h. | |
28f540f4 | 503 | |
0e3426bb RM |
504 | $(common-objpfx)version.mk: $(..)version.h $(..)Makeconfig |
505 | sed -n -e 's/^.*RELEASE.*"\([^"]*\)".*$$/release=\1/p' \ | |
506 | -e 's/^.*VERSION.*"\([^"]*\)".*$$/version=\1/p' \ | |
a641835a RM |
507 | < $< > $@-new |
508 | mv -f $@-new $@ | |
28f540f4 RM |
509 | |
510 | endif # Makeconfig not yet included |