mirror of
git://sourceware.org/git/glibc.git
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929 lines
31 KiB
Plaintext
929 lines
31 KiB
Plaintext
# Copyright (C) 1991-2003,2004,2005,2006,2007,2008,2009,2010,2011,2012
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# 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 Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the 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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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <http://www.gnu.org/licenses/>.
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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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all: # Make this the default goal
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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 := $(patsubst %//,%/,$(objdir)/$(subdir)/)
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common-objpfx = $(objdir)/
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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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# Root of the sysdeps tree.
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sysdep_dir := $(..)sysdeps
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export sysdep_dir := $(sysdep_dir)
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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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# What flags to give to sources which call user provided callbacks
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uses-callbacks = $(exceptions)
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# What flags to give to tests which test stack alignment
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stack-align-test-flags =
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# We have a special subdir for each binary format.
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# For now, only ELF is fully supported.
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binfmt-subdir = elf
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# Complete path to sysdep dirs.
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# `configure' writes a definition of `config-sysdirs' in `config.make'.
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sysdirs := $(foreach D,$(config-sysdirs),$(firstword $(filter /%,$D) $(..)$D))
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# Add-ons that contribute sysdeps trees get added to the include list
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# after sysdeps/generic. This makes #include <sysdeps/...> work right
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# to find specific add-on files without assuming the add-on directory name.
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# It also means that headers can go into an add-on's base directory
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# instead of the add-on needing a sysdeps/generic of its own.
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sysdeps-srcdirs := $(foreach add-on,$(sysdeps-add-ons),\
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$(firstword $(filter /%,$(add-on)) \
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$(..)$(add-on)))
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+sysdep_dirs = $(sysdirs) $(sysdeps-srcdirs)
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ifdef objdir
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+sysdep_dirs := $(objdir) $(+sysdep_dirs)
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endif
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# Run config.status to update config.make and config.h. We don't show the
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# dependence of config.h to Make, because it is only touched when it
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# changes and so config.status would be run every time; the dependence of
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# config.make should suffice to force regeneration and re-exec, and the new
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# image will notice if config.h changed.
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$(common-objpfx)config.make: $(common-objpfx)config.status \
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$(..)config.make.in $(..)config.h.in
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cd $(<D); $(SHELL) $(<F)
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# Find all the add-on and sysdeps configure fragments, to make sure we
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# re-run configure when any of them changes.
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$(common-objpfx)config.status: $(..)version.h $(..)configure \
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$(foreach dir,$(sysdirs),\
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$(wildcard $(dir)/Implies) \
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$(patsubst %.in,%,\
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$(firstword $(wildcard \
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$(addprefix $(dir)/,configure configure.in))))) \
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$(patsubst %.in,%,\
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$(foreach add-on,$(add-ons),\
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$(firstword $(wildcard \
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$(addprefix $(firstword $(filter /%,$(add-on)) $(..)$(add-on))/,\
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configure configure.in)))))
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@cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
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echo The GNU C library has not been configured. >&2; \
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echo Run \`configure\' to configure it before building. >&2; \
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echo Try \`configure --help\' for more details. >&2; \
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exit 1; fi
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# We don't want CPPFLAGS to be exported to the command running configure.
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unexport CPPFLAGS
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# Get the user's configuration parameters.
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ifneq ($(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 $(common-objpfx)configparms),)
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include $(common-objpfx)configparms
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endif
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endif
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####
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#### These are the configuration variables. You can define values for
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#### the variables below in the file `configparms'.
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#### Do NOT edit this file.
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####
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# Common prefix for machine-independent installation directories.
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ifeq ($(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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# Decide whether we shall build the programs or not. We always do this
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# unless the user tells us (in configparms) or we are building for a
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# standalone target.
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ifndef build-programs
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ifneq ($(config-os),none)
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build-programs=yes
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else
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build-programs=no
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endif
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endif
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# Common prefix for machine-dependent installation directories.
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ifeq ($(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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inst_libdir = $(install_root)$(libdir)
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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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inst_slibdir = $(install_root)$(slibdir)
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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 = $(prefix)/include
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endif
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inst_includedir = $(install_root)$(includedir)
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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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inst_datadir = $(install_root)$(datadir)
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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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inst_zonedir = $(install_root)$(zonedir)
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# Where to install the locale files.
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ifndef localedir
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localedir = $(libdir)/locale
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endif
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inst_localedir = $(install_root)$(localedir)
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# Where to install the message catalog data files (which are
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# machine-independent).
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ifndef msgcatdir
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msgcatdir = $(datadir)/locale
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endif
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inst_msgcatdir = $(install_root)$(msgcatdir)
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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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inst_i18ndir = $(install_root)$(i18ndir)
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# Where to install the shared object for charset transformation.
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ifndef gconvdir
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gconvdir = $(libdir)/gconv
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endif
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inst_gconvdir = $(install_root)$(gconvdir)
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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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inst_bindir = $(install_root)$(bindir)
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# Where to install internal programs.
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ifndef libexecdir
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libexecdir = $(exec_prefix)/libexec
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endif
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inst_libexecdir = $(install_root)$(libexecdir)
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# Where to install administrative programs.
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ifndef rootsbindir
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rootsbindir = $(exec_prefix)/sbin
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endif
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inst_rootsbindir = $(install_root)$(rootsbindir)
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ifndef sbindir
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sbindir = $(exec_prefix)/sbin
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endif
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inst_sbindir = $(install_root)$(sbindir)
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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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inst_infodir = $(install_root)$(infodir)
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# Where to install audit libraries.
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ifndef auditdir
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auditdir = $(libdir)/audit
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endif
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inst_auditdir = $(install_root)$(auditdir)
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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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inst_sysconfdir = $(install_root)$(sysconfdir)
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# Directory for the database files and Makefile for nss_db.
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ifndef vardbdir
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vardbdir = /var/db
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endif
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inst_vardbdir = $(install_root)$(vardbdir)
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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 to use for leap second specifications in compiling the default
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# timezone files. Set this to `/dev/null' for no leap second handling as
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# 1003.1 requires, or to `leapseconds' for proper leap second handling.
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# Both zone flavors are always available as `posix/ZONE' and `right/ZONE'.
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# This variable determines the default: if it's `/dev/null',
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# ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE.
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ifndef leapseconds
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leapseconds = /dev/null
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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_SCRIPT
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INSTALL_SCRIPT = $(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
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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 = $(CC)
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endif
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# Default flags to pass the C compiler.
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ifndef default_cflags
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ifeq ($(release),stable)
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default_cflags := -g -O2
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else
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default_cflags := -g -O
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endif
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endif
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|
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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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as-needed := -Wl,--as-needed
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no-as-needed := -Wl,--no-as-needed
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# Must be supported by the linker.
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no-whole-archive = -Wl,--no-whole-archive
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whole-archive = -Wl,--whole-archive
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# Installed name of the startup code.
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# The ELF convention is that the startfile is called crt1.o
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start-installed-name = crt1.o
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# On systems that do not need a special startfile for statically linked
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# binaries, simply set it to the normal name.
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ifndef static-start-installed-name
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static-start-installed-name = $(start-installed-name)
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endif
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ifeq (yesyes,$(build-shared)$(have-z-combreloc))
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combreloc-LDFLAGS = -Wl,-z,combreloc
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LDFLAGS.so += $(combreloc-LDFLAGS)
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LDFLAGS-rtld += $(combreloc-LDFLAGS)
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endif
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relro-LDFLAGS = -Wl,-z,relro
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LDFLAGS.so += $(relro-LDFLAGS)
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LDFLAGS-rtld += $(relro-LDFLAGS)
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|
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ifeq (yes,$(have-hash-style))
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# For the time being we unconditionally use 'both'. At some time we
|
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# should declare statically linked code as 'out of luck' and compile
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# with --hash-style=gnu only.
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hashstyle-LDFLAGS = -Wl,--hash-style=both
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LDFLAGS.so += $(hashstyle-LDFLAGS)
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LDFLAGS-rtld += $(hashstyle-LDFLAGS)
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endif
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# Command for linking programs with the C library.
|
||
ifndef +link
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+link = $(CC) -nostdlib -nostartfiles -o $@ \
|
||
$(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
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||
$(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
|
||
$(addprefix $(csu-objpfx),$(start-installed-name)) \
|
||
$(+preinit) $(+prector) \
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||
$(filter-out $(addprefix $(csu-objpfx),start.o \
|
||
$(start-installed-name))\
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||
$(+preinit) $(link-extra-libs) \
|
||
$(common-objpfx)libc% $(+postinit),$^) \
|
||
$(link-extra-libs) $(link-libc) $(+postctor) $(+postinit)
|
||
endif
|
||
# Command for linking PIE programs with the C library.
|
||
ifndef +link-pie
|
||
+link-pie = $(CC) -pie -Wl,-O1 -nostdlib -nostartfiles -o $@ \
|
||
$(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
|
||
$(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
|
||
$(addprefix $(csu-objpfx),S$(start-installed-name)) \
|
||
$(+preinit) $(+prectorS) \
|
||
$(filter-out $(addprefix $(csu-objpfx),start.o \
|
||
S$(start-installed-name))\
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||
$(+preinit) $(link-extra-libs) \
|
||
$(common-objpfx)libc% $(+postinit),$^) \
|
||
$(link-extra-libs) $(link-libc) $(+postctorS) $(+postinit)
|
||
endif
|
||
# Command for statically linking programs with the C library.
|
||
ifndef +link-static
|
||
+link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \
|
||
$(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
|
||
$(addprefix $(csu-objpfx),$(static-start-installed-name)) \
|
||
$(+preinit) $(+prector) \
|
||
$(filter-out $(addprefix $(csu-objpfx),start.o \
|
||
$(start-installed-name))\
|
||
$(+preinit) $(link-extra-libs-static) \
|
||
$(common-objpfx)libc% $(+postinit),$^) \
|
||
$(link-extra-libs-static) $(link-libc-static) $(+postctor) $(+postinit)
|
||
endif
|
||
# Command for statically linking bounded-pointer programs with the C library.
|
||
ifndef +link-bounded
|
||
+link-bounded = $(CC) -nostdlib -nostartfiles -static -fbounded-pointers -o $@ \
|
||
$(sysdep-LDFLAGS) $(LDFLAGS) \
|
||
$(addprefix $(csu-objpfx),b$(static-start-installed-name)) \
|
||
$(+preinit) $(+prector) \
|
||
$(filter-out $(addprefix $(csu-objpfx),start.ob \
|
||
$(start-installed-name))\
|
||
$(+preinit) $(link-extra-libs-bounded) \
|
||
$(common-objpfx)libc% $(+postinit),$^) \
|
||
$(link-extra-libs-bounded) $(link-libc-bounded) $(+postctor) $(+postinit)
|
||
endif
|
||
ifndef config-LDFLAGS
|
||
ifeq (yes,$(build-shared))
|
||
config-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name)
|
||
endif
|
||
endif
|
||
ifndef link-libc
|
||
ifeq (yes,$(build-shared))
|
||
# We need the versioned name of libc.so in the deps of $(others) et al
|
||
# so that the symlink to libc.so is created before anything tries to
|
||
# run the linked programs.
|
||
link-libc = -Wl,-rpath-link=$(rpath-link) \
|
||
$(common-objpfx)libc.so$(libc.so-version) \
|
||
$(common-objpfx)$(patsubst %,$(libtype.oS),c) \
|
||
$(as-needed) $(common-objpfx)elf/ld.so $(no-as-needed) $(gnulib)
|
||
# This is how to find at build-time things that will be installed there.
|
||
rpath-dirs = math elf dlfcn nss nis rt resolv crypt
|
||
rpath-link = \
|
||
$(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
|
||
elfobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)elf)
|
||
else
|
||
nssobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nss)
|
||
resolvobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)resolv)
|
||
link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib)
|
||
endif
|
||
endif
|
||
|
||
# Differences in the linkers on the various platforms.
|
||
LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN'
|
||
LDFLAGS-soname-fname = -Wl,-soname,$(@F)
|
||
LDFLAGS-rdynamic = -rdynamic
|
||
LDFLAGS-Bsymbolic = -Bsymbolic
|
||
|
||
# Choose the default search path for the dynamic linker based on
|
||
# where we will install libraries.
|
||
ifneq ($(libdir),$(slibdir))
|
||
default-rpath = $(slibdir):$(libdir)
|
||
else
|
||
default-rpath = $(libdir)
|
||
endif
|
||
|
||
ifndef link-extra-libs
|
||
link-extra-libs = $(LDLIBS-$(@F))
|
||
link-extra-libs-static = $(link-extra-libs)
|
||
link-extra-libs-bounded = $(link-extra-libs)
|
||
endif
|
||
|
||
# The static libraries.
|
||
link-libc-static = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib) -Wl,--end-group
|
||
link-libc-bounded = $(common-objpfx)libc_b.a $(gnulib) $(common-objpfx)libc_b.a
|
||
|
||
ifndef gnulib
|
||
ifneq ($(have-cc-with-libunwind),yes)
|
||
libunwind =
|
||
else
|
||
libunwind = -lunwind
|
||
endif
|
||
libgcc_eh := -Wl,--as-needed -lgcc_s $(libunwind) -Wl,--no-as-needed
|
||
gnulib := -lgcc $(libgcc_eh)
|
||
static-gnulib := -lgcc -lgcc_eh $(libunwind)
|
||
libc.so-gnulib := -lgcc
|
||
endif
|
||
+preinit = $(addprefix $(csu-objpfx),crti.o)
|
||
+postinit = $(addprefix $(csu-objpfx),crtn.o)
|
||
+prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbegin.o`
|
||
+postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
|
||
# Variants of the two previous definitions for linking PIE programs.
|
||
+prectorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginS.o`
|
||
+postctorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtendS.o`
|
||
+interp = $(addprefix $(elf-objpfx),interp.os)
|
||
csu-objpfx = $(common-objpfx)csu/
|
||
elf-objpfx = $(common-objpfx)elf/
|
||
|
||
# How to run a program we just linked with our library.
|
||
# The program binary is assumed to be $(word 2,$^).
|
||
built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
|
||
ifeq (yes,$(build-shared))
|
||
comma = ,
|
||
sysdep-library-path = \
|
||
$(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\
|
||
$(filter -Wl$(comma)-rpath-link=%,\
|
||
$(sysdep-LDFLAGS)))))
|
||
run-program-prefix = $(if $(filter $(notdir $(built-program-file)),\
|
||
$(tests-static) $(xtests-static)),, \
|
||
$(elf-objpfx)$(rtld-installed-name) \
|
||
--library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)))
|
||
else
|
||
run-program-prefix =
|
||
endif
|
||
# Never use $(run-program-prefix) for the statically-linked %-bp test programs
|
||
built-program-cmd = $(patsubst %,$(run-program-prefix),\
|
||
$(filter-out %-bp,$(built-program-file))) \
|
||
$(built-program-file)
|
||
|
||
ifndef LD
|
||
LD := ld -X
|
||
endif
|
||
|
||
# Extra flags to pass to GCC.
|
||
ifeq ($(all-warnings),yes)
|
||
+gccwarn := -Wall -Wwrite-strings -Winline -Wcast-qual -Wbad-function-cast -Wmissing-noreturn -Wmissing-prototypes -Wmissing-declarations -Wcomment -Wcomments -Wtrigraphs -Wsign-compare -Wfloat-equal -Wmultichar
|
||
else
|
||
+gccwarn := -Wall -Wwrite-strings -Winline
|
||
endif
|
||
+gccwarn-c = -Wstrict-prototypes
|
||
|
||
# We do not depend on the address of constants in different files to be
|
||
# actually different, so allow the compiler to merge them all.
|
||
+merge-constants = -fmerge-all-constants
|
||
|
||
# This is the program that generates makefile dependencies from C source files.
|
||
# The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy
|
||
# targets for headers so that removed headers don't break the build.
|
||
ifndef +mkdep
|
||
+mkdep = $(CC) -M -MP
|
||
endif
|
||
|
||
# The program that makes Emacs-style TAGS files.
|
||
ETAGS := etags
|
||
|
||
# The `xgettext' program for producing .pot files from sources.
|
||
ifndef XGETTEXT
|
||
XGETTEXT = xgettext
|
||
endif
|
||
|
||
# The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
|
||
# perhaps others) to preprocess assembly code in some cases.
|
||
M4 = m4
|
||
|
||
# To force installation of files even if they are older than the
|
||
# installed files. This variable is included in the dependency list
|
||
# of all installation targets.
|
||
ifeq ($(force-install),yes)
|
||
+force = force-install
|
||
else
|
||
+force =
|
||
endif
|
||
|
||
####
|
||
#### End of configuration variables.
|
||
####
|
||
|
||
# This tells some versions of GNU make before 3.63 not to export all variables.
|
||
.NOEXPORT:
|
||
|
||
# We want to echo the commands we're running without
|
||
# umpteen zillion filenames along with it (we use `...' instead)
|
||
# but we don't want this echoing done when the user has said
|
||
# he doesn't want to see commands echoed by using -s.
|
||
ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s
|
||
+cmdecho := echo >/dev/null
|
||
else # not -s
|
||
+cmdecho := echo
|
||
endif # -s
|
||
|
||
# These are the flags given to the compiler to tell
|
||
# it what sort of optimization and/or debugging output to do.
|
||
ifndef +cflags
|
||
# If `CFLAGS' was defined, use that.
|
||
ifdef CFLAGS
|
||
+cflags := $(filter-out -I%,$(CFLAGS))
|
||
endif # CFLAGS
|
||
endif # +cflags
|
||
|
||
# If none of the above worked, default to "-g -O".
|
||
ifeq "$(strip $(+cflags))" ""
|
||
+cflags := $(default_cflags)
|
||
endif # $(+cflags) == ""
|
||
|
||
+cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants)
|
||
+gcc-nowarn := -w
|
||
|
||
# Don't duplicate options if we inherited variables from the parent.
|
||
+cflags := $(sort $(+cflags))
|
||
|
||
# These are flags given to the C compiler to tell it to look for
|
||
# include files (including ones given in angle brackets) in the parent
|
||
# library source directory, in the include directory, and in the
|
||
# current directory.
|
||
+sysdep-includes = $(addprefix -I,$(+sysdep_dirs))
|
||
+includes = -I$(..)include $(if $(subdir),$(objpfx:%/=-I%)) \
|
||
$(+sysdep-includes) $(includes) \
|
||
$(patsubst %/,-I%,$(..)) $(libio-include) -I. $(sysincludes)
|
||
|
||
# Since libio has several internal header files, we use a -I instead
|
||
# of many little headers in the include directory.
|
||
libio-include = -I$(..)libio
|
||
|
||
# These are the variables that the implicit compilation rules use.
|
||
# Note that we can't use -std=* in CPPFLAGS, because it overrides
|
||
# the implicit -lang-asm and breaks cpp behavior for .S files--notably
|
||
# it causes cpp to stop predefining __ASSEMBLER__.
|
||
CPPFLAGS = $(CPPFLAGS-config) $($(subdir)-CPPFLAGS) $(+includes) $(defines) \
|
||
-include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
|
||
$(CPPFLAGS-$(suffix $@)) \
|
||
$(foreach lib,$(libof-$(basename $(@F))) \
|
||
$(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \
|
||
$(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F)))
|
||
override CFLAGS = -std=gnu99 $(gnu89-inline-CFLAGS) \
|
||
$(filter-out %frame-pointer,$(+cflags)) $(+gccwarn-c) \
|
||
$(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) \
|
||
$(CFLAGS-$(@F)) \
|
||
$(foreach lib,$(libof-$(basename $(@F))) \
|
||
$(libof-$(<F)) $(libof-$(@F)),$(CFLAGS-$(lib)))
|
||
override CXXFLAGS = $(c++-sysincludes) \
|
||
$(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \
|
||
$(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F))
|
||
|
||
# If everything is compiled with -fPIC (implicitly) we must tell this by
|
||
# defining the PIC symbol.
|
||
ifeq (yes,$(build-pic-default))
|
||
pic-default = -DPIC
|
||
endif
|
||
|
||
# Enable object files for different versions of the library.
|
||
# Various things use $(object-suffixes) to know what all to make.
|
||
# The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
|
||
# to pass different flags for each flavor.
|
||
libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o))
|
||
all-object-suffixes := .o .os .op .og .ob .oS
|
||
object-suffixes :=
|
||
CPPFLAGS-.o = $(pic-default)
|
||
CFLAGS-.o = $(filter %frame-pointer,$(+cflags))
|
||
libtype.o := lib%.a
|
||
object-suffixes += .o
|
||
ifeq (yes,$(build-shared))
|
||
# Under --enable-shared, we will build a shared library of PIC objects.
|
||
# The PIC object files are named foo.os.
|
||
object-suffixes += .os
|
||
CPPFLAGS-.os = -DPIC -DSHARED
|
||
CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag)
|
||
libtype.os := lib%_pic.a
|
||
# This can be changed by a sysdep makefile
|
||
pic-ccflag = -fPIC
|
||
# This one should always stay like this unless there is a very good reason.
|
||
PIC-ccflag = -fPIC
|
||
endif
|
||
# This can be changed by a sysdep makefile
|
||
pie-ccflag = -fpie
|
||
# This one should always stay like this unless there is a very good reason.
|
||
PIE-ccflag = -fPIE
|
||
ifeq (yes,$(build-profile))
|
||
# Under --enable-profile, we will build a static library of profiled objects.
|
||
# The profiled object files are named foo.op.
|
||
object-suffixes += .op
|
||
CPPFLAGS-.op = -DPROF $(pic-default)
|
||
CFLAGS-.op = -pg
|
||
libtype.op = lib%_p.a
|
||
endif
|
||
|
||
bppfx = BP-
|
||
ifeq (yes,$(build-bounded))
|
||
# Under --enable-bounded, we build the library with `-fbounded-pointers -g'
|
||
# to runtime bounds checking. The bounded-pointer objects are named foo.ob.
|
||
# We disable sibling-call optimizations so that stack traces will be complete
|
||
# and thus aid debugging, since after all, BPs are a debugging tool.
|
||
object-suffixes += .ob
|
||
CPPFLAGS-.ob = -fbounded-pointers $(pic-default)
|
||
CFLAGS-.ob = -g -O2 -fno-optimize-sibling-calls -fno-strict-aliasing
|
||
libtype.ob = lib%_b.a
|
||
endif
|
||
|
||
object-suffixes-for-libc := $(object-suffixes)
|
||
|
||
ifeq (yes,$(build-shared))
|
||
# Build special library that contains the static-only routines for libc.
|
||
object-suffixes-for-libc += .oS
|
||
|
||
# Must build the routines as PIC, though, because they can end up in (users')
|
||
# shared objects. We don't want to use CFLAGS-os because users may, for
|
||
# example, make that processor-specific.
|
||
CFLAGS-.oS = $(CFLAGS-.o) $(PIC-ccflag)
|
||
CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC -DLIBC_NONSHARED=1
|
||
libtype.oS = lib%_nonshared.a
|
||
endif
|
||
|
||
# The assembler can generate debug information too.
|
||
ifndef ASFLAGS
|
||
ifeq ($(have-cpp-asm-debuginfo),yes)
|
||
ASFLAGS := $(filter -g% -fdebug-prefix-map=%,$(CFLAGS))
|
||
else
|
||
ASFLAGS :=
|
||
endif
|
||
endif
|
||
ASFLAGS += $(ASFLAGS-config) $(asflags-cpu)
|
||
|
||
ifndef BUILD_CC
|
||
BUILD_CC = $(CC)
|
||
endif
|
||
|
||
move-if-change = $(SHELL) $(..)scripts/move-if-change
|
||
|
||
-include $(common-objpfx)sysd-sorted
|
||
subdirs = $(sorted-subdirs)
|
||
subdir-srcdirs = $(foreach dir,$(subdirs),\
|
||
$(firstword $($(dir)-srcdir) $(..)$(dir)))
|
||
|
||
ifeq (yes, $(build-shared))
|
||
|
||
# This is a pair of implicit rules to preprocess a file with # comments,
|
||
# %ifdef et al, based on config.h settings or other %include'd files.
|
||
# We use chained rules instead of a pipeline here so that we can properly
|
||
# check the exit status of cpp rather than using its bad output when there
|
||
# is a preprocessing error. Another rule should depend on the output file
|
||
# `FOO.v', and along with that `FOO.v.i' should be given dependencies
|
||
# listing both its input files, and any header files that it may reference
|
||
# (but no commands).
|
||
%.v.i: $(common-objpfx)config.h $(..)Makeconfig
|
||
sed '/^[ ]*%/!s/#.*$$//;/^[ ]*$$/d;s/^[ ]*%/#/' \
|
||
$(filter-out FORCE %.h $(..)Makeconfig,$^) \
|
||
| $(CC) -E -undef $(CPPFLAGS) -x assembler-with-cpp - \
|
||
> $@T
|
||
mv -f $@T $@
|
||
%.v: %.v.i
|
||
sed '/^[ ]*#/d;/^[ ]*$$/d' $< > $@T
|
||
mv -f $@T $@
|
||
|
||
# Process the shlib-versions file, which tells us what shared library
|
||
# version numbers to use when we install shared objects on this system.
|
||
# We need to wait until $(subdirs) is complete.
|
||
ifeq ($(sysd-sorted-done),t)
|
||
-include $(common-objpfx)soversions.mk
|
||
ifndef avoid-generated
|
||
# This lets add-ons give more-specific matches that override defaults
|
||
# in the top-level file.
|
||
$(common-objpfx)shlib-versions.v.i: \
|
||
$(wildcard $(+sysdep_dirs:=/shlib-versions) \
|
||
$(subdir-srcdirs:=/shlib-versions)) \
|
||
$(..)shlib-versions
|
||
|
||
soversions-default-setname = $(patsubst %, %,\
|
||
$(filter-out %_default,\
|
||
$(oldest-abi:%=GLIBC_%)))
|
||
$(common-objpfx)soversions.i: $(..)scripts/soversions.awk \
|
||
$(common-objpfx)shlib-versions.v
|
||
$(AWK) -v default_setname='$(soversions-default-setname)' \
|
||
-v cpu='$(config-machine)' \
|
||
-v vendor='$(config-vendor)' \
|
||
-v os='$(config-os)' \
|
||
-f $^ > $@T
|
||
mv -f $@T $@
|
||
$(common-objpfx)soversions.mk: $(common-objpfx)soversions.i $(..)Makeconfig
|
||
(seen_DEFAULT=0; seen_WORDSIZE32=0; seen_WORDSIZE64=0; \
|
||
while read which lib number setname; do \
|
||
eval seen_$$which=1; \
|
||
test x"$$which" != xABI || echo abi-name = "$$lib"; \
|
||
test x"$$which" = xDEFAULT || continue; \
|
||
case $$number in \
|
||
[0-9]*) echo "$$lib.so-version=.$$number"; \
|
||
echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\
|
||
*) echo "$$lib.so-version=$$number"; \
|
||
echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\
|
||
esac; \
|
||
done; \
|
||
case "$$seen_DEFAULT$$seen_WORDSIZE32$$seen_WORDSIZE64" in \
|
||
100) echo biarch = no;; \
|
||
101) echo biarch = 32;; \
|
||
?1?) echo biarch = 64;; \
|
||
*) echo >&2 BUG; exit 2;; \
|
||
esac; \
|
||
echo soversions.mk-done = t;) < $< > $@T; exit 0
|
||
mv -f $@T $@
|
||
endif
|
||
endif
|
||
|
||
postclean-generated += soversions.mk soversions.i \
|
||
shlib-versions.v shlib-versions.v.i
|
||
|
||
# Generate the header containing the names of all shared libraries.
|
||
# We use a stamp file to avoid unnecessary recompilations.
|
||
before-compile += $(common-objpfx)gnu/lib-names.h
|
||
ifeq ($(soversions.mk-done),t)
|
||
$(common-objpfx)gnu/lib-names.h: $(common-objpfx)gnu/lib-names.stmp; @:
|
||
$(common-objpfx)gnu/lib-names.stmp: $(..)scripts/lib-names.awk \
|
||
$(common-objpfx)soversions.i
|
||
$(make-target-directory)
|
||
@rm -f ${@:stmp=T} $@
|
||
LC_ALL=C $(AWK) -f $^ > ${@:stmp=T}
|
||
$(move-if-change) ${@:stmp=T} ${@:stmp=h}
|
||
touch $@
|
||
endif
|
||
|
||
common-generated += gnu/lib-names.h gnu/lib-names.stmp
|
||
|
||
# The name under which the run-time dynamic linker is installed.
|
||
# We are currently going for the convention that `/lib/ld.so.1'
|
||
# names the SVR4/ELF ABI-compliant dynamic linker.
|
||
ifndef rtld-installed-name
|
||
ifdef ld.so-version
|
||
rtld-installed-name = $(ld.so-version)
|
||
else
|
||
rtld-installed-name = ld.so.1
|
||
endif
|
||
endif
|
||
|
||
ifndef rtld-version-installed-name
|
||
rtld-version-installed-name = ld-$(version).so
|
||
endif
|
||
|
||
endif # build-shared
|
||
|
||
|
||
dlfcn = dlfcn
|
||
ifeq ($(build-shared),yes)
|
||
libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
|
||
else
|
||
libdl = $(common-objpfx)dlfcn/libdl.a
|
||
endif
|
||
|
||
ifeq ($(build-shared),yes)
|
||
libm = $(common-objpfx)math/libm.so$(libm.so-version)
|
||
else
|
||
libm = $(common-objpfx)math/libm.a
|
||
endif
|
||
|
||
# These are the subdirectories containing the library source. The order
|
||
# is more or less arbitrary. The sorting step will take care of the
|
||
# dependencies.
|
||
all-subdirs = csu assert ctype locale intl catgets math setjmp signal \
|
||
stdlib stdio-common libio malloc string wcsmbs time dirent \
|
||
grp pwd posix io termios resource misc socket sysvipc gmon \
|
||
gnulib iconv iconvdata wctype manual shadow gshadow po argp \
|
||
crypt nss localedata timezone rt conform debug \
|
||
$(add-on-subdirs) $(dlfcn) $(binfmt-subdir)
|
||
|
||
ifndef avoid-generated
|
||
all-Depend-files := $(wildcard $(foreach dir,$(all-subdirs),\
|
||
$(firstword $($(dir)-srcdir) \
|
||
$(..)$(dir))/Depend))
|
||
$(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk \
|
||
$(common-objpfx)config.make $(..)Makeconfig \
|
||
$(wildcard $(sysdirs:=/Subdirs)) \
|
||
$(all-Depend-files)
|
||
$(AWK) -f $< \
|
||
-v subdirs='$(all-subdirs)' \
|
||
-v srcpfx='$(..)' \
|
||
$(filter %/Subdirs %/Depend,$^) > $@-tmp
|
||
mv -f $@-tmp $@
|
||
$(all-Depend-files): ;
|
||
endif
|
||
|
||
# This gives partial TARGET:SOURCE pattern pairs to have rules
|
||
# emitted into sysd-rules. A sysdeps Makeconfig fragment can
|
||
# add its own special object file prefix to this list with e.g. foo-%:%
|
||
# to have foo-*.? compiled from *.? using $(foo-CPPFLAGS).
|
||
sysd-rules-patterns := %:% rtld-%:rtld-% rtld-%:% m_%:s_%
|
||
|
||
# Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here.
|
||
sysdep-makeconfigs := $(wildcard $(+sysdep_dirs:=/Makeconfig))
|
||
ifneq (,$(sysdep-makeconfigs))
|
||
include $(sysdep-makeconfigs)
|
||
endif
|
||
|
||
# Compute just the target patterns. Makeconfig has set sysd-rules-patterns.
|
||
sysd-rules-targets := $(sort $(foreach p,$(sysd-rules-patterns),\
|
||
$(firstword $(subst :, ,$p))))
|
||
|
||
endif # Makeconfig not yet included
|
||
|
||
# Local Variables:
|
||
# mode: makefile
|
||
# End:
|