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8942a07afc
* sysdeps/unix/sysv/linux/Dist: Add it. * sysdeps/unix/sysv/linux/Makefile [$(subdir)=socket] (headers): Add net/if.h. * Makeconfig (link-libc): Add libc.a after libc.so in link. * Rules (static-only-routines rule): Use empty.o instead of dummy.o. (empty.o): New target. (generated): Add empty.c, empty.o.
481 lines
13 KiB
Plaintext
481 lines
13 KiB
Plaintext
# Copyright (C) 1991, 92, 93, 94, 95, 96 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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# If config.make exists, the source directory was configured,
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# so don't try to be clever and find another directory to build in.
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ifneq (,$(wildcard $(..)config.make))
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ARCH =
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machine =
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else # Not configured.
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ifndef ARCH
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ifdef machine
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ARCH = $(machine)
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endif # machine
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endif # ARCH
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endif # config.make
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# Directory for object files and libc.a. If this is not defined, the
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# object files live in the subdirectories where their sources live, and
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# libc.a lives in the parent directory (this probably doesn't work any
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# more).
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ifdef ARCH
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ifeq ($(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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endif
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# $(common-objdir) is the place to put objects and
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# such that are not specific to a single subdir.
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ifdef objdir
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objpfx = $(objdir)/
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common-objpfx = $(objpfx)
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common-objdir = $(objdir)
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else
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objpfx :=
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ifdef ..
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common-objpfx = $(..)
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common-objdir = ..
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else
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# This is a kludge. make wizards might grok.
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common-objpfx = sysdeps/../
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common-objdir = .
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endif
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endif
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# Get the values defined by options to `configure'.
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include $(common-objpfx)config.make
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# Run config.status to update config.make and config.h. We don't show the
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# dependence of config.h to Make, because it is only touched when it
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# changes and so config.status would be run every time; the dependence of
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# config.make should suffice to force regeneration and re-exec, and the new
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# image will notice if config.h changed.
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$(common-objpfx)config.make: $(common-objpfx)config.status $(..)config.h.in
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cd $(<D); $(SHELL) $(<F)
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# Force the user to configure before making.
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$(common-objpfx)config.status: $(..)configure
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@cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
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echo The GNU C library has not been configured. >&2; \
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echo Run \`configure\' to configure it before building. >&2; \
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echo Try \`configure --help\' for more details. >&2; \
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exit 1; fi
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# Get the user's configuration parameters.
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ifneq ($(wildcard $(..)configparms),)
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include $(..)configparms
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endif
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ifneq ($(objpfx),)
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ifneq ($(wildcard $(objpfx)configparms),)
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include $(objpfx)configparms
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endif
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endif
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sysdep_dir := $(..)sysdeps
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export sysdep_dir := $(sysdep_dir)
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####
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#### These are the configuration variables. You can define values for
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#### the variables below in the file `configparms'.
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#### Do NOT edit this file.
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####
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# Set this to either `stdio' or `libio', to compile in either GNU stdio
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# or GNU libio.
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ifndef stdio
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stdio = stdio
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endif
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# Common prefix for machine-independent installation directories.
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ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value.
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prefix = /usr/local
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endif
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# Common prefix for machine-dependent installation directories.
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ifeq ($(origin exec_prefix),undefined)
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exec_prefix = $(prefix)
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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 = $(exec_prefix)/lib
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endif
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# Where to install the shared library and dynamic linker.
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ifndef slibdir
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slibdir = $(exec_prefix)/lib
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endif
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# Prefix to put on files installed in $(libdir). For libraries `libNAME.a',
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# the prefix is spliced between `lib' and the name, so the linker switch
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# `-l$(libprefix)NAME' finds the library; for other files the prefix is
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# just prepended to the whole file name.
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ifeq ($(origin libprefix),undefined)
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libprefix =
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endif
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# Where to install the header files.
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ifndef includedir
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includedir = $(exec_prefix)/include
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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 the locale database.
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ifndef datadir
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datadir = $(prefix)/share
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endif
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# Where to install the timezone data files (which are machine-independent).
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ifndef zonedir
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zonedir = $(datadir)/zoneinfo
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endif
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# Where to install the locale and message catalog data files (which are
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# machine-independent).
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ifndef localedir
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localedir = $(datadir)/locale
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endif
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# Where to install the locale charmap source files.
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ifndef i18ndir
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i18ndir = $(datadir)/i18n
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endif
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# Where to install programs.
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ifndef bindir
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bindir = $(exec_prefix)/bin
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endif
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# Where to install administrative programs.
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ifndef sbindir
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sbindir = $(exec_prefix)/sbin
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endif
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# Where to install the Info files.
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ifndef infodir
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infodir = $(prefix)/info
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endif
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# Where to install default configuration files. These include the local
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# timezone specification and network data base files.
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ifndef sysconfdir
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sysconfdir = $(prefix)/etc
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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 the file whose
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# contents $(localtime) specifies. If this is a relative pathname, it is
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# relative to $(zonedir). It is a good idea to put this somewhere
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# other than there, so the zoneinfo directory contains only universal data,
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# localizing the configuration data elsewhere.
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ifndef localtime-file
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localtime-file = $(sysconfdir)/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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# If you want POSIX.1 compatibility, use `America/New_York'.
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ifndef posixrules
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posixrules = America/New_York
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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 $(zonedir).
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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) -m 644
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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
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endif
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# The name of the C compiler to use for compilations of programs to run on
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# the host that is building the library. If you set CC to a
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# cross-compiler, you must set this to the normal compiler.
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ifndef BUILD_CC
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BUILD_CC = $(CC)
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endif
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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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# Flags to pass the C compiler when assembling preprocessed assembly code
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# (`.S' files). On some systems the assembler doesn't understand the `#' line
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# directives the preprocessor produces. If you have troubling compiling
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# assembly code, try using -P here to suppress these directives.
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ifndef asm-CPPFLAGS
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asm-CPPFLAGS =
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endif
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# Command for linking programs with the C library.
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ifndef +link
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+link = $(CC) -nostdlib -nostartfiles -o $@ \
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$(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) \
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$(addprefix $(csu-objpfx),start.o $(+preinit)) \
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$(filter-out $(common-objpfx)libc%,$^) $(link-libc) \
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$(addprefix $(csu-objpfx),$(+postinit))
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endif
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ifndef config-LDFLAGS
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ifeq (yes,$(build-shared))
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config-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name)
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endif
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endif
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ifndef link-libc
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ifeq (yes,$(build-shared))
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link-libc = -Wl,-rpath-link=$(common-objdir) \
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$(common-objpfx)libc.so $(common-objpfx)libc.a $(gnulib)
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# Choose the default search path for the dynamic linker based on
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# where we will install libraries.
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ifneq ($(libdir),$(slibdir))
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default-rpath = $(slibdir):$(libdir)
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else
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default-rpath = $(libdir)
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endif
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else
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link-libc = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a
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endif
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endif
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ifndef gnulib
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gnulib := -lgcc
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endif
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ifeq ($(elf),yes)
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+preinit = crti.o
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+postinit = crtn.o
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endif
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ifdef objpfx
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csu-objpfx = $(objpfx)
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elf-objpfx = $(objpfx)
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else
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csu-objpfx = $(..)csu/
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elf-objpfx = $(..)elf/
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endif
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ifeq (yes,$(build-shared))
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ifndef rtld-installed-name
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rtld-installed-name = ld.so
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endif
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endif
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# How to run a program we just linked with our library.
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# The program binary is assumed to be $(word 2,$^).
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built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
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ifneq (yes,$(build-shared))
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built-program-cmd = $(built-program-file)
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else
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comma = ,
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define built-program-cmd
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LD_LIBRARY_PATH=$(common-objdir)$(patsubst -Wl$(comma)-rpath-link=%,:%,\
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$(filter -Wl$(comma)-rpath-link=%,\
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$(sysdep-LDFLAGS))) \
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$(elf-objpfx)ld.so $(built-program-file)
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endef
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endif
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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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# Extra flags to pass to GCC.
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+gccwarn := -Wall -Wwrite-strings -Wno-parentheses -Winline -Wstrict-prototypes
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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 = $(CC) -M
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endif
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# The program that makes Emacs-style TAGS files.
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ETAGS := etags -T
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# The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
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# perhaps others) to preprocess assembly code in some cases.
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M4 = m4
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####
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#### End of configuration variables.
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####
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# This tells some versions of GNU make before 3.63 not to export all variables.
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.NOEXPORT:
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# We want to echo the commands we're running without
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# umpteem zillion filenames along with it (we use `...' instead)
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# but we don't want this echoing done when the user has said
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# he doesn't want to see commands echoed by using -s.
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ifneq "$(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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+cflags := $(+cflags) $(+gccwarn)
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+gcc-nowarn := -w
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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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# These are flags given to the C compiler to tell it to look for include
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# files (including ones given in angle brackets) in the current directory
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# and in the parent library source directory.
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# `+sysdep-includes' will be defined by Makerules.
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+includes = -I. $(filter-out -I,-I$(patsubst %/,%,$(..))) $($(stdio)-include) \
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$(includes) $(+sysdep-includes) $(last-includes)
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# Since libio has several internal header files, we use a -I instead
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# of many little headers in the top level source directory.
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libio-include = -I$(..)libio
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# These are the variables that the implicit compilation rules use.
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CPPFLAGS = $(+includes) $(defines) -include $(..)libc-symbols.h \
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$(sysdep-CPPFLAGS) $(CPPFLAGS-$(suffix $@))
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override CFLAGS = $(+cflags) $(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) \
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$(CFLAGS-$(<F))
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# This is the macro that the implicit linking rules use.
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ifneq "$(filter -g,$(+cflags))" "" # -g is in $(+cflags)
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LDFLAGS := -g
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endif
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# Enable object files for different versions of the library.
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# Various things use $(object-suffixes) to know what all to make.
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# The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
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# to pass different flags for each flavor.
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libtypes = $(foreach o,$(object-suffixes),$(libtype$o))
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object-suffixes := .o
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libtype.o := lib%.a
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ifeq (yes,$(build-shared))
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# Under --enable-shared, we will build a shared library of PIC objects.
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# The PIC object files are named foo.so.
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object-suffixes += .so
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CPPFLAGS-.so = -DPIC
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CFLAGS-.so = -fPIC
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libtype.so := lib%_pic.a
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endif
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ifeq (yes,$(build-profile))
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# Under --enable-profile, we will build a static library of profiled objects.
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# The profiled object files are named foo.po.
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object-suffixes += .po
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CPPFLAGS-.po = -DPROF
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CFLAGS-.po = -pg
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libtype.po = lib%_p.a
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endif
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ifeq (yes,$(build-omitfp))
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# Under --enable-omitfp, we build an the library optimized without
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# debugging information using -fomit-frame-pointer, and build an extra
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# library with debugging information. The debuggable objects are named foo.go.
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object-suffixes += .go
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CFLAGS-.go = -g
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CFLAGS-.o = -g0 -O99 -fomit-frame-pointer
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CFLAGS-.so += $(CFLAGS.o)
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libtype.go = lib%_g.a
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endif
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+gnu-stabs = $(shell echo>&2 '*** BARF ON ME')
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ifneq ($(BUILD_CC),$(CC))
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cross-compiling := yes
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else
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cross-compiling := no
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endif
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# Figure out the version numbers from version.h.
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$(common-objpfx)version.mk: $(..)version.h $(..)Makeconfig
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sed -n -e 's/^.*RELEASE.*"\([^"]*\)".*$$/release=\1/p' \
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-e 's/^.*VERSION.*"\([^"]*\)".*$$/version=\1/p' \
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< $< > $@-new
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mv -f $@-new $@
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endif # Makeconfig not yet included
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