]> git.ipfire.org Git - thirdparty/glibc.git/blame - Makeconfig
Sat May 6 11:06:47 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
[thirdparty/glibc.git] / Makeconfig
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1# Copyright (C) 1991, 1992, 1993, 1994, 1995 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
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#
22ifneq (,)
23This makefile requires GNU Make.
24endif
25
26ifneq "$(origin +included-Makeconfig)" "file"
27
28+included-Makeconfig := yes
29
30ifdef subdir
31.. := ../
32endif
33
34# If config.make exists, the source directory was configured,
35# so don't try to be clever and find another directory to build in.
36ifneq (,$(wildcard $(..)config.make))
37ARCH =
38machine =
39else # Not configured.
40ifndef ARCH
41ifdef machine
42ARCH = $(machine)
43endif # machine
44endif # ARCH
45endif # config.make
46
47# Directory for object files and libc.a. If this is not defined, the
48# object files live in the subdirectories where their sources live, and
49# libc.a lives in the parent directory (this probably doesn't work any
50# more).
51ifdef ARCH
52ifeq ($(filter /%,$(ARCH)),)
53objdir := $(..)$(ARCH)
54else
55objdir = $(ARCH)
56endif
57endif
58
59# $(common-objdir) is the place to put objects and
60# such that are not specific to a single subdir.
61ifdef objdir
62objpfx = $(objdir)/
63common-objpfx = $(objpfx)
64common-objdir = $(objdir)
65else
66objpfx :=
67ifdef ..
68common-objpfx = $(..)
69common-objdir = ..
70else
71# This is a kludge. make wizards might grok.
72common-objpfx = sysdeps/../
73common-objdir = .
74endif
75endif
76
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77
78# Get the values defined by options to `configure'.
79include $(common-objpfx)config.make
80
81# Force the user to configure before making.
82$(common-objpfx)config.make:
83 @echo The GNU C library has not been configured. >&2
84 @echo Run \`configure\' to configure it before building. >&2
85 @exit 1
86
87# Get the user's configuration parameters.
88ifneq ($(wildcard $(..)configparms),)
89include $(..)configparms
90endif
91ifneq ($(objpfx),)
92ifneq ($(wildcard $(objpfx)configparms),)
93include $(objpfx)configparms
94endif
95endif
96
97sysdep_dir := $(..)sysdeps
98export sysdep_dir := $(sysdep_dir)
99\f
100####
101#### These are the configuration variables. You can define values for
102#### the variables below in the file `configparms'.
103#### Do NOT edit this file.
104####
105
106
107# Common prefix for machine-independent installation directories.
108ifndef prefix
109prefix = /usr/local
110endif
111
112# Common prefix for machine-dependent installation directories.
113ifndef exec_prefix
114exec_prefix = $(prefix)
115endif
116
117# Where to install the library and object files.
118ifndef libdir
119libdir = $(exec_prefix)/lib
120endif
121
122# Prefix to put on files installed in $(libdir). For libraries `libNAME.a',
123# the prefix is spliced between `lib' and the name, so the linker switch
124# `-l$(libprefix)NAME' finds the library; for other files the prefix is
125# just prepended to the whole file name.
126ifndef libprefix
127libprefix =
128endif
129
130# Where to install the header files.
131ifndef includedir
132includedir = $(exec_prefix)/include
133endif
134
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135# Where to install machine-independent data files.
136# These are the timezone database, and eventually the locale database.
137ifndef datadir
138datadir = $(prefix)/share
139endif
140
141# Where to install the timezone data files (which are machine-independent).
142ifndef zonedir
143zonedir = $(datadir)/zoneinfo
144endif
145
146# Where to install programs.
147ifndef bindir
148bindir = $(exec_prefix)/bin
149endif
150
151# Where to install administrative programs.
152ifndef sbindir
153sbindir = $(exec_prefix)/sbin
154endif
155
156# Where to install the Info files.
157ifndef infodir
158infodir = $(prefix)/info
159endif
160
161# Where to install default configuration files. These include the local
162# timezone specification and network data base files.
163ifndef sysconfdir
164sysconfdir = $(prefix)/etc
165endif
166
167# What timezone should be the installed default (e.g., US/Eastern).
168# Run `make -C time echo-zonenames' to see a list of available zone names.
169# The local timezone can be changed with `zic -l TIMEZONE' at any time.
170ifndef localtime
171localtime = Factory
172endif
173
174# Where to install the "localtime" timezone file; this is the file whose
175# contents $(localtime) specifies. If this is a relative pathname, it is
176# relative to $(zonedir). It is a good idea to put this somewhere
177# other than there, so the zoneinfo directory contains only universal data,
178# localizing the configuration data elsewhere.
179ifndef localtime-file
180localtime-file = $(sysconfdir)/localtime
181endif
182
183# What timezone's DST rules should be used when a POSIX-style TZ
184# environment variable doesn't specify any rules. For 1003.1 compliance
185# this timezone must use rules that are as U.S. federal law defines DST.
186# Run `make -C time echo-zonenames' to see a list of available zone names.
187# This setting can be changed with `zic -p TIMEZONE' at any time.
188# If you want POSIX.1 compatibility, use `America/New_York'.
189ifndef posixrules
190posixrules = America/New_York
191endif
192
193# Where to install the "posixrules" timezone file; this is file
194# whose contents $(posixrules) specifies. If this is a relative
195# pathname, it is relative to $(zonedir).
196ifndef posixrules-file
197posixrules-file = posixrules
198endif
199
200
201# Directory where your system's native header files live.
202# This is used on Unix systems to generate some GNU libc header files.
203ifndef sysincludedir
204sysincludedir = /usr/include
205endif
206
207
208# Commands to install files.
209ifndef INSTALL_DATA
210INSTALL_DATA = $(INSTALL) -m 644
211endif
212ifndef INSTALL_PROGRAM
213INSTALL_PROGRAM = $(INSTALL)
214endif
215ifndef INSTALL
216INSTALL = install
217endif
218
219
220# The name of the C compiler.
221# If you've got GCC, and it works, use it.
222ifeq ($(origin CC),default)
223CC := gcc
224endif
225
226# The name of the C compiler to use for compilations of programs to run on
227# the host that is building the library. If you set CC to a
228# cross-compiler, you must set this to the normal compiler.
229ifndef BUILD_CC
230BUILD_CC = $(CC)
231endif
232
233# Default flags to pass the C compiler.
234ifndef default_cflags
235default_cflags := -g
236endif
237
238# Flags to pass the C compiler when assembling preprocessed assembly code
239# (`.S' files). On some systems the assembler doesn't understand the `#' line
240# directives the preprocessor produces. If you have troubling compiling
241# assembly code, try using -P here to suppress these directives.
242ifndef asm-CPPFLAGS
243asm-CPPFLAGS =
244endif
245
246# Command for linking programs with the C library.
247ifndef +link
248+link = $(CC) -nostdlib $(LDFLAGS) -o $@ \
96f873b9 249 $(addprefix $(csu-objpfx),start.o $(+preinit)) \
66e3dda4 250 $(^:lib=$(common-objpfx)libc.a) $(gnulib) $(common-objpfx)libc.a \
96f873b9 251 $(addprefix $(csu-objpfx),$(+postinit))
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252endif
253ifndef gnulib
254gnulib := -lgcc
255endif
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256ifeq ($(elf),yes)
257+preinit = crti.o
258+postinit = crtn.o
259endif
260ifdef objpfx
261csu-objpfx = $(objpfx)
262else
883bc19b 263csu-objpfx = $(..)csu/
96f873b9 264endif
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265
266ifndef LD
267LD := ld -X
268endif
269
270ifndef RANLIB
271RANLIB = ranlib
272endif
273
274# Extra flags to pass to GCC.
421f82e5 275+gccwarn := -Wall -Wwrite-strings -Wno-parentheses -Winline
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276
277# This is the program that generates makefile
278# dependencies from C source files.
279ifndef +mkdep
280+mkdep = $(CC) -M
281endif
282
283# The program that makes Emacs-style TAGS files.
284ETAGS := etags -T
285
286# The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
287# perhaps others) to preprocess assembly code in some cases.
288M4 = m4
289
290####
291#### End of configuration variables.
292####
293\f
294# This tells some versions of GNU make before 3.63 not to export all variables.
295.NOEXPORT:
296
297# We want to echo the commands we're running without
298# umpteem zillion filenames along with it (we use `...' instead)
299# but we don't want this echoing done when the user has said
300# he doesn't want to see commands echoed by using -s.
301ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s
302+cmdecho := echo >/dev/null
303else # not -s
304+cmdecho := echo
305endif # -s
306
307# These are the flags given to the compiler to tell
308# it what sort of optimization and/or debugging output to do.
309ifndef +cflags
310# If `CFLAGS' was defined, use that.
311ifdef CFLAGS
312+cflags := $(filter-out -I%,$(CFLAGS))
313endif # CFLAGS
314endif # +cflags
315
316# If none of the above worked, default to "-g".
317ifeq "$(strip $(+cflags))" ""
318+cflags := $(default_cflags)
319endif # $(+cflags) == ""
320
321# If using gcc, add flags that only it will grok.
322ifneq "$(findstring gcc,$(CC))" ""
323+cflags := $(+cflags) $(+gccwarn)
324+gcc-nowarn := -w
325else
326+gcc-nowarn :=
327endif # gcc
328
329# Don't duplicate options if we inherited variables from the parent.
330+cflags := $(sort $(+cflags))
331
332
333# These are flags given to the C compiler to tell it to look for include
334# files (including ones given in angle brackets) in the current directory
335# and in the parent library source directory.
336# `+sysdep-includes' will be defined by Makerules.
337+includes = -I. $(filter-out -I,-I$(patsubst %/,%,$(..))) \
338 $(includes) $(+sysdep-includes) $(last-includes)
339
340
341# These are the variables that the implicit compilation rules use.
342CPPFLAGS = $(+includes) $(defines) -include $(..)libc-symbols.h \
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343 $(sysdep-CPPFLAGS) $(CPPFLAGS-$(suffix $@))
344override CFLAGS = $(+cflags) $(sysdep-CFLAGS) $(CFLAGS-$(suffix $@))
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345
346
347# This is the macro that the implicit linking rules use.
348ifneq "$(filter -g,$(+cflags))" "" # -g is in $(+cflags)
349LDFLAGS := -g
350endif
351
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352
353# Enable object files for different versions of the library.
354# Various things use $(object-suffixes) to know what all to make.
355# The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
356# to pass different flags for each flavor.
357libtypes = $(foreach o,$(object-suffixes),$(libtype$o))
358object-suffixes := .o
359libtype.o := lib%.a
360ifeq (yes,$(build-shared))
361# Under --enable-shared, we will build a shared library of PIC objects.
362# The PIC object files are named foo.so.
363object-suffixes += .so
364CPPFLAGS-.so = -DPIC
365CFLAGS-.so = -fPIC
366libtype.so := lib%_pic.a
367endif
368ifeq (yes,$(build-profile))
369# Under --enable-profile, we will build a static library of profiled objects.
370# The profiled object files are named foo.po.
371object-suffixes += .po
372CFLAGS-.po = -p
373libtype.po = lib%_p.a
374endif
375ifeq (yes,$(build-omitfp))
376# Under --enable-omitfp, we build an the library optimized without
377# debugging information using -fomit-frame-pointer, and build an extra
378# library with debugging information. The debuggable objects are named foo.go.
379object-suffixes += .go
380CFLAGS-.go = -g
381CFLAGS-.o = -g0 -O99 -fomit-frame-pointer
382CFLAGS-.so += $(CFLAGS.o)
383libtype.go = lib%_g.a
384endif
385
386
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387+gnu-stabs = $(shell echo>&2 '*** BARF ON ME')
388
389ifneq ($(BUILD_CC),$(CC))
390cross-compiling := yes
391else
392cross-compiling := no
393endif
394
395
396endif # Makeconfig not yet included