281 lines
7.6 KiB
Plaintext
281 lines
7.6 KiB
Plaintext
# Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Library General Public License as
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# published by the Free Software Foundation; either version 2 of the
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# License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Library General Public License for more details.
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# You should have received a copy of the GNU Library General Public
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# License along with the GNU C Library; see the file COPYING.LIB. If
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# not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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# Cambridge, MA 02139, USA.
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#
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# Makefile configuration options for the GNU C library.
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#
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ifneq (,)
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This makefile requires GNU Make.
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endif
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ifneq "$(origin +included-Makeconfig)" "file"
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+included-Makeconfig := yes
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ifdef subdir
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.. := ../
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endif
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# You can put variables that are specific to a configuration in the file
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# Makeconfig in the object directory for that configuration. Variables
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# that do not vary between different configurations at your site can be
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# editted below.
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ifndef ARCH
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ifdef machine
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ARCH = $(machine)
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else
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include $(..)config.status
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endif
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endif
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# Directory for object files, libc.a, and ansi/ and trad/ directories.
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# If this is not defined, the object files live in the subdirectories
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# where their sources live, and libc.a and the ansi/ and trad/ directories
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# live in the parent directory (this probably doesn't work any more).
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ifdef ARCH
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ifeq ($(filter /%,$(ARCH)),)
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objdir := $(..)$(ARCH)
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else
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objdir = $(ARCH)
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endif
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ifneq ($(wildcard $(objdir)/Makeconfig),)
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include $(objdir)/Makeconfig
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endif
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endif
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#
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# These are the configuration variables.
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#
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# Common prefix for all installation directories.
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ifndef prefix
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prefix = /usr/local
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endif
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# Where to install the library and object files.
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ifndef libdir
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libdir = $(prefix)/lib
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endif
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# Where to install the header files. There are two sets of header files
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# produced, an ANSI C set and a traditional C set. ansi-incldir, if
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# defined, is where to install the ANSI C set; trad-incldir, if defined, is
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# where to install the traditional C set. If you define both, you can
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# install both sets, in different places.
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ifndef ansi-incldir
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ansi-incldir = $(prefix)/include
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endif
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ifndef trad-incldir
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#trad-incldir = $(prefix)/include
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endif
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# Define if the library should install its own <stddef.h>.
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# Do this unless you are using version 2.2 or later of GCC.
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ifndef stddef.h
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stddef.h = stddef.h
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endif
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# Where to install machine-independent data files.
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# These are the timezone database, and eventually the locale database.
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ifndef datadir
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datadir = $(prefix)/lib
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endif
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# Where to install programs.
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ifndef bindir
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bindir = $(prefix)/bin
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endif
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# What timezone should be the installed default (e.g., US/Eastern).
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# Run `make -C time echo-zonenames' to see a list of available zone names.
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# The local timezone can be changed with `zic -l TIMEZONE' at any time.
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ifndef localtime
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localtime = Factory
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endif
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# Where to install the "localtime" timezone file; this is file
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# whose contents $(localtime) specifies. If this is a relative
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# pathname, it is relative to $(datadir)/zoneinfo.
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ifndef localtime-file
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localtime-file = localtime
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endif
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# What timezone's DST rules should be used when a POSIX-style TZ
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# environment variable doesn't specify any rules. For 1003.1 compliance
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# this timezone must use rules that are as U.S. federal law defines DST.
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# Run `make -C time echo-zonenames' to see a list of available zone names.
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# This setting can be changed with `zic -p TIMEZONE' at any time.
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ifndef posixrules
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posixrules = US/Eastern
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endif
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# Where to install the "posixrules" timezone file; this is file
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# whose contents $(posixrules) specifies. If this is a relative
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# pathname, it is relative to $(datadir)/zoneinfo.
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ifndef posixrules-file
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posixrules-file = posixrules
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endif
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# Directory where your system's native header files live.
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# This is used on Unix systems to generate some GNU libc header files.
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ifndef sysincludedir
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sysincludedir = /usr/include
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endif
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# Commands to install files.
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ifndef INSTALL_DATA
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INSTALL_DATA = $(INSTALL)
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endif
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ifndef INSTALL_PROGRAM
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INSTALL_PROGRAM = $(INSTALL)
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endif
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ifndef INSTALL
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INSTALL = install
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endif
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# The name of the C compiler.
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# If you've got GCC, and it works, use it.
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ifeq ($(origin CC),default)
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CC := gcc -pipe
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endif
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# These are preprocessor macros we want to predefine.
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# Define HAVE_GNU_LD if using GNU ld (which you should do if possible).
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# If you do this, you may need the GNU assembler as well.
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# If you don't do this, your library won't work as well (and won't be strictly
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# compliant with the ANSI C standard).
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+defines = $(defines) -DHAVE_GNU_LD
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# Default flags to pass the C compiler.
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ifndef default_cflags
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+default_cflags := -g
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endif
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# Command for linking programs with the C library.
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+link = $(LD) -o $@ -e __start $(objpfx)start.o $(^:lib=$(objpfx)libc.a) $(libdir)/gcc-gnulib $(objpfx)libc.a -lc
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ifndef LD
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LD := ld -X
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endif
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ifndef RANLIB
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RANLIB = ranlib
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endif
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# Define non-empty if the C compiler understands -v (print version).
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+cc_version = $(filter gcc,$(notdir $(firstword $(CC)))) # if using gcc
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# Extra flags to pass to GCC.
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+gccwarn := -Wall -Wwrite-strings -Wpointer-arith -Wstrict-prototypes
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+gccopt := -fstrength-reduce -fcombine-regs
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# This is the program that generates makefile
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# dependencies from C source files.
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ifndef +mkdep
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+mkdep = $(CC) -M
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endif
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# The program that makes Emacs-style TAGS files.
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+etags := etags -tw
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ifdef objdir
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objpfx = $(objdir)/
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libc.a = $(objpfx)libc.a
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else
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objpfx :=
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libc.a = $(..)libc.a
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endif
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# We want to echo the commands we're running without
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# umpteem zillion filenames along with it (we use `...' instead)
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# but we don't want this echoing done when the user has said
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# he doesn't want to see commands echoed by using -s.
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ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s
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+cmdecho := echo >/dev/null
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else # not -s
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+cmdecho := echo
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endif # -s
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# These are the flags given to the compiler to tell
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# it what sort of optimization and/or debugging output to do.
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ifndef +cflags
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# If `CFLAGS' was defined, use that.
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ifdef CFLAGS
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+cflags := $(filter-out -I%,$(CFLAGS))
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endif # CFLAGS
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endif # +cflags
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# If none of the above worked, default to "-g".
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ifeq "$(strip $(+cflags))" ""
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+cflags := $(+default_cflags)
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endif # $(+cflags) == ""
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# If using gcc, add flags that only it will grok.
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ifneq "$(findstring gcc,$(CC))" ""
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+cflags := $(+cflags) $(+gccwarn)
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ifneq "$(filter -O,$(+cflags))" ""
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+cflags := $(+cflags) $(+gccopt)
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endif
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endif # gcc
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# Don't duplicate options if we inherited variables from the parent.
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+cflags := $(sort $(+cflags))
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ifneq "$(findstring v,$(MAKEFLAGS))" "" # if -v
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ifneq "$(strip $(+cc_version))" ""
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# If Make is telling us version info, tell the compiler to do so as well.
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CC := $(CC) -v
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endif # +cc_version
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endif # -v
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# These are flags given to the C compiler to
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# tell it to look for include files (including ones
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# given in angle brackets) in the current directory
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# and in the parent library source directory.
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ifneq "$(..)" ""
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+includes = -I. -I$(patsubst %/,%,$(..)) $(includes)
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else
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+includes = -I. $(includes)
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endif
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# These are the variables that the implicit compilation rules use.
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CPPFLAGS = $(+includes) $(+defines) -DLIBC
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override CFLAGS = $(+cflags)
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# This is the macro that the implicit linking rules use.
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ifneq "$(filter -g,$(+cflags))" "" # -g is in $(+cflags)
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LDFLAGS := -g
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endif
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ifneq "$(filter -DHAVE_GNU_LD,$(CPPFLAGS))" ""
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+gnu-stabs := yes
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endif
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endif # Makeconfig not yet included
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