mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
e50ec9f91d
* Make-dist (+sysdeps): Move wildcard inside loop to avoid consing up a huge list just to discard most of it. * configure.in (sysnames): Avoid fgrep by using the case shell builtin. * Makeconfig (config.status): Fix dependency on Implies files.
506 lines
14 KiB
Plaintext
506 lines
14 KiB
Plaintext
# Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
|
||
# This file is part of the GNU C Library.
|
||
|
||
# The GNU C Library is free software; you can redistribute it and/or
|
||
# modify it under the terms of the GNU Library General Public License as
|
||
# published by the Free Software Foundation; either version 2 of the
|
||
# License, or (at your option) any later version.
|
||
|
||
# The GNU C Library is distributed in the hope that it will be useful,
|
||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
# Library General Public License for more details.
|
||
|
||
# You should have received a copy of the GNU Library General Public
|
||
# License along with the GNU C Library; see the file COPYING.LIB. If
|
||
# not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
||
# Cambridge, MA 02139, USA.
|
||
|
||
#
|
||
# Makefile configuration options for the GNU C library.
|
||
#
|
||
ifneq (,)
|
||
This makefile requires GNU Make.
|
||
endif
|
||
|
||
ifneq "$(origin +included-Makeconfig)" "file"
|
||
|
||
+included-Makeconfig := yes
|
||
|
||
ifdef subdir
|
||
.. := ../
|
||
endif
|
||
|
||
# If config.make exists, the source directory was configured,
|
||
# so don't try to be clever and find another directory to build in.
|
||
ifneq (,$(wildcard $(..)config.make))
|
||
ARCH =
|
||
machine =
|
||
else # Not configured.
|
||
ifndef ARCH
|
||
ifdef machine
|
||
ARCH = $(machine)
|
||
endif # machine
|
||
endif # ARCH
|
||
endif # config.make
|
||
|
||
# Directory for object files and libc.a. If this is not defined, the
|
||
# object files live in the subdirectories where their sources live, and
|
||
# libc.a lives in the parent directory (this probably doesn't work any
|
||
# more).
|
||
ifdef ARCH
|
||
ifeq ($(filter /%,$(ARCH)),)
|
||
objdir := $(..)$(ARCH)
|
||
else
|
||
objdir = $(ARCH)
|
||
endif
|
||
endif
|
||
|
||
# $(common-objdir) is the place to put objects and
|
||
# such that are not specific to a single subdir.
|
||
ifdef objdir
|
||
objpfx = $(objdir)/
|
||
common-objpfx = $(objpfx)
|
||
common-objdir = $(objdir)
|
||
else
|
||
objpfx :=
|
||
ifdef ..
|
||
common-objpfx = $(..)
|
||
common-objdir = ..
|
||
else
|
||
# This is a kludge. make wizards might grok.
|
||
common-objpfx = sysdeps/../
|
||
common-objdir = .
|
||
endif
|
||
endif
|
||
|
||
# Root of the sysdeps tree.
|
||
sysdep_dir := $(..)sysdeps
|
||
export sysdep_dir := $(sysdep_dir)
|
||
|
||
|
||
# Get the values defined by options to `configure'.
|
||
include $(common-objpfx)config.make
|
||
|
||
# Run config.status to update config.make and config.h. We don't show the
|
||
# dependence of config.h to Make, because it is only touched when it
|
||
# changes and so config.status would be run every time; the dependence of
|
||
# config.make should suffice to force regeneration and re-exec, and the new
|
||
# image will notice if config.h changed.
|
||
$(common-objpfx)config.make: $(common-objpfx)config.status $(..)config.h.in
|
||
cd $(<D); $(SHELL) $(<F)
|
||
|
||
# Find all the sysdeps configure fragments, to make sure we re-run
|
||
# configure when any of them changes.
|
||
$(common-objpfx)config.status: $(..)configure \
|
||
$(foreach dir,$(config-sysdirs),\
|
||
$(wildcard \
|
||
$(sysdep_dir)/$(dir)/Implies) \
|
||
$(patsubst %.in,%,\
|
||
$(firstword $(wildcard \
|
||
$(addprefix $(sysdep_dir)/$(dir)/,configure configure.in)))))
|
||
@cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
|
||
echo The GNU C library has not been configured. >&2; \
|
||
echo Run \`configure\' to configure it before building. >&2; \
|
||
echo Try \`configure --help\' for more details. >&2; \
|
||
exit 1; fi
|
||
|
||
# Get the user's configuration parameters.
|
||
ifneq ($(wildcard $(..)configparms),)
|
||
include $(..)configparms
|
||
endif
|
||
ifneq ($(objpfx),)
|
||
ifneq ($(wildcard $(objpfx)configparms),)
|
||
include $(objpfx)configparms
|
||
endif
|
||
endif
|
||
|
||
####
|
||
#### These are the configuration variables. You can define values for
|
||
#### the variables below in the file `configparms'.
|
||
#### Do NOT edit this file.
|
||
####
|
||
|
||
|
||
# Set this to either `stdio' or `libio', to compile in either GNU stdio
|
||
# or GNU libio.
|
||
ifndef stdio
|
||
stdio = stdio
|
||
endif
|
||
|
||
# Common prefix for machine-independent installation directories.
|
||
ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value.
|
||
prefix = /usr/local
|
||
endif
|
||
|
||
# Common prefix for machine-dependent installation directories.
|
||
ifeq ($(origin exec_prefix),undefined)
|
||
exec_prefix = $(prefix)
|
||
endif
|
||
|
||
# Where to install the library and object files.
|
||
ifndef libdir
|
||
libdir = $(exec_prefix)/lib
|
||
endif
|
||
|
||
# Where to install the shared library and dynamic linker.
|
||
ifndef slibdir
|
||
slibdir = $(exec_prefix)/lib
|
||
endif
|
||
|
||
# Prefix to put on files installed in $(libdir). For libraries `libNAME.a',
|
||
# the prefix is spliced between `lib' and the name, so the linker switch
|
||
# `-l$(libprefix)NAME' finds the library; for other files the prefix is
|
||
# just prepended to the whole file name.
|
||
ifeq ($(origin libprefix),undefined)
|
||
libprefix =
|
||
endif
|
||
|
||
# Where to install the header files.
|
||
ifndef includedir
|
||
includedir = $(exec_prefix)/include
|
||
endif
|
||
|
||
# Where to install machine-independent data files.
|
||
# These are the timezone database, and the locale database.
|
||
ifndef datadir
|
||
datadir = $(prefix)/share
|
||
endif
|
||
|
||
# Where to install the timezone data files (which are machine-independent).
|
||
ifndef zonedir
|
||
zonedir = $(datadir)/zoneinfo
|
||
endif
|
||
|
||
# Where to install the locale and message catalog data files (which are
|
||
# machine-independent).
|
||
ifndef localedir
|
||
localedir = $(datadir)/locale
|
||
endif
|
||
|
||
# Where to install the locale charmap source files.
|
||
ifndef i18ndir
|
||
i18ndir = $(datadir)/i18n
|
||
endif
|
||
|
||
|
||
# Where to install programs.
|
||
ifndef bindir
|
||
bindir = $(exec_prefix)/bin
|
||
endif
|
||
|
||
# Where to install administrative programs.
|
||
ifndef sbindir
|
||
sbindir = $(exec_prefix)/sbin
|
||
endif
|
||
|
||
# Where to install the Info files.
|
||
ifndef infodir
|
||
infodir = $(prefix)/info
|
||
endif
|
||
|
||
# Where to install default configuration files. These include the local
|
||
# timezone specification and network data base files.
|
||
ifndef sysconfdir
|
||
sysconfdir = $(prefix)/etc
|
||
endif
|
||
|
||
# What timezone should be the installed default (e.g., US/Eastern).
|
||
# Run `make -C time echo-zonenames' to see a list of available zone names.
|
||
# The local timezone can be changed with `zic -l TIMEZONE' at any time.
|
||
ifndef localtime
|
||
localtime = Factory
|
||
endif
|
||
|
||
# Where to install the "localtime" timezone file; this is the file whose
|
||
# contents $(localtime) specifies. If this is a relative pathname, it is
|
||
# relative to $(zonedir). It is a good idea to put this somewhere
|
||
# other than there, so the zoneinfo directory contains only universal data,
|
||
# localizing the configuration data elsewhere.
|
||
ifndef localtime-file
|
||
localtime-file = $(sysconfdir)/localtime
|
||
endif
|
||
|
||
# What to use for leap second specifications in compiling the default
|
||
# timezone files. Set this to `/dev/null' for no leap second handling as
|
||
# 1003.1 requires, or to `leapseconds' for proper leap second handling.
|
||
# Both zone flavors are always available as `posix/ZONE' and `right/ZONE'.
|
||
# This variable determines the default: if it's `/dev/null',
|
||
# ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE.
|
||
ifndef leapseconds
|
||
leapseconds = /dev/null
|
||
endif
|
||
|
||
# What timezone's DST rules should be used when a POSIX-style TZ
|
||
# environment variable doesn't specify any rules. For 1003.1 compliance
|
||
# this timezone must use rules that are as U.S. federal law defines DST.
|
||
# Run `make -C time echo-zonenames' to see a list of available zone names.
|
||
# This setting can be changed with `zic -p TIMEZONE' at any time.
|
||
# If you want POSIX.1 compatibility, use `America/New_York'.
|
||
ifndef posixrules
|
||
posixrules = America/New_York
|
||
endif
|
||
|
||
# Where to install the "posixrules" timezone file; this is file
|
||
# whose contents $(posixrules) specifies. If this is a relative
|
||
# pathname, it is relative to $(zonedir).
|
||
ifndef posixrules-file
|
||
posixrules-file = posixrules
|
||
endif
|
||
|
||
|
||
# Directory where your system's native header files live.
|
||
# This is used on Unix systems to generate some GNU libc header files.
|
||
ifndef sysincludedir
|
||
sysincludedir = /usr/include
|
||
endif
|
||
|
||
|
||
# Commands to install files.
|
||
ifndef INSTALL_DATA
|
||
INSTALL_DATA = $(INSTALL) -m 644
|
||
endif
|
||
ifndef INSTALL_PROGRAM
|
||
INSTALL_PROGRAM = $(INSTALL)
|
||
endif
|
||
ifndef INSTALL
|
||
INSTALL = install
|
||
endif
|
||
|
||
|
||
# The name of the C compiler.
|
||
# If you've got GCC, and it works, use it.
|
||
ifeq ($(origin CC),default)
|
||
CC := gcc
|
||
endif
|
||
|
||
# The name of the C compiler to use for compilations of programs to run on
|
||
# the host that is building the library. If you set CC to a
|
||
# cross-compiler, you must set this to the normal compiler.
|
||
ifndef BUILD_CC
|
||
BUILD_CC = $(CC)
|
||
endif
|
||
|
||
# Default flags to pass the C compiler.
|
||
ifndef default_cflags
|
||
default_cflags := -g
|
||
endif
|
||
|
||
# Flags to pass the C compiler when assembling preprocessed assembly code
|
||
# (`.S' files). On some systems the assembler doesn't understand the `#' line
|
||
# directives the preprocessor produces. If you have troubling compiling
|
||
# assembly code, try using -P here to suppress these directives.
|
||
ifndef asm-CPPFLAGS
|
||
asm-CPPFLAGS =
|
||
endif
|
||
|
||
# Command for linking programs with the C library.
|
||
ifndef +link
|
||
+link = $(CC) -nostdlib -nostartfiles -o $@ \
|
||
$(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) \
|
||
$(addprefix $(csu-objpfx),start.o $(+preinit)) \
|
||
$(filter-out $(common-objpfx)libc%,$^) $(link-libc) \
|
||
$(addprefix $(csu-objpfx),$(+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) \
|
||
$(elfobjdir)/$(rtld-installed-name) \
|
||
$(common-objpfx)libc.a $(gnulib)
|
||
# Choose the default search path for the dynamic linker based on
|
||
# where we will install libraries.
|
||
ifneq ($(libdir),$(slibdir))
|
||
default-rpath = $(slibdir):$(libdir)
|
||
else
|
||
default-rpath = $(libdir)
|
||
endif
|
||
# This is how to find at build-time things that will be installed there.
|
||
rpath-link = $(common-objdir):$(elfobjdir)
|
||
else
|
||
link-libc = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a
|
||
endif
|
||
endif
|
||
ifndef gnulib
|
||
gnulib := -lgcc
|
||
endif
|
||
ifeq ($(elf),yes)
|
||
+preinit = crti.o
|
||
+postinit = crtn.o
|
||
endif
|
||
ifdef objpfx
|
||
csu-objpfx = $(objpfx)
|
||
elf-objpfx = $(objpfx)
|
||
else
|
||
csu-objpfx = $(..)csu/
|
||
elf-objpfx = $(..)elf/
|
||
endif
|
||
|
||
ifeq (yes,$(build-shared))
|
||
ifndef rtld-installed-name
|
||
rtld-installed-name = ld.so
|
||
endif
|
||
endif
|
||
|
||
# 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 $(word 2,$^))
|
||
ifneq (yes,$(build-shared))
|
||
built-program-cmd = $(built-program-file)
|
||
else
|
||
comma = ,
|
||
define built-program-cmd
|
||
LD_LIBRARY_PATH=$(rpath-link)$(patsubst -Wl$(comma)-rpath-link=%,:%,\
|
||
$(filter -Wl$(comma)-rpath-link=%,\
|
||
$(sysdep-LDFLAGS))) \
|
||
$(elf-objpfx)ld.so $(built-program-file)
|
||
endef
|
||
endif
|
||
|
||
ifndef LD
|
||
LD := ld -X
|
||
endif
|
||
|
||
ifndef RANLIB
|
||
RANLIB = ranlib
|
||
endif
|
||
|
||
# Extra flags to pass to GCC.
|
||
+gccwarn := -Wall -Wwrite-strings -Wno-parentheses -Winline -Wstrict-prototypes
|
||
|
||
# This is the program that generates makefile
|
||
# dependencies from C source files.
|
||
ifndef +mkdep
|
||
+mkdep = $(CC) -M
|
||
endif
|
||
|
||
# The program that makes Emacs-style TAGS files.
|
||
ETAGS := etags -T
|
||
|
||
# The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
|
||
# perhaps others) to preprocess assembly code in some cases.
|
||
M4 = m4
|
||
|
||
####
|
||
#### End of configuration variables.
|
||
####
|
||
|
||
# This tells some versions of GNU make before 3.63 not to export all variables.
|
||
.NOEXPORT:
|
||
|
||
# We want to echo the commands we're running without
|
||
# umpteem zillion filenames along with it (we use `...' instead)
|
||
# but we don't want this echoing done when the user has said
|
||
# he doesn't want to see commands echoed by using -s.
|
||
ifneq "$(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".
|
||
ifeq "$(strip $(+cflags))" ""
|
||
+cflags := $(default_cflags)
|
||
endif # $(+cflags) == ""
|
||
|
||
+cflags := $(+cflags) $(+gccwarn)
|
||
+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 current directory
|
||
# and in the parent library source directory.
|
||
# `+sysdep-includes' will be defined by Makerules.
|
||
+includes = -I. $(filter-out -I,-I$(patsubst %/,%,$(..))) $($(stdio)-include) \
|
||
$(includes) $(+sysdep-includes) $(last-includes)
|
||
|
||
# Since libio has several internal header files, we use a -I instead
|
||
# of many little headers in the top level source directory.
|
||
libio-include = -I$(..)libio
|
||
|
||
# These are the variables that the implicit compilation rules use.
|
||
CPPFLAGS = $(+includes) $(defines) -include $(..)libc-symbols.h \
|
||
$(sysdep-CPPFLAGS) $(CPPFLAGS-$(suffix $@))
|
||
override CFLAGS = $(+cflags) $(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) \
|
||
$(CFLAGS-$(<F))
|
||
|
||
|
||
# This is the macro that the implicit linking rules use.
|
||
ifneq "$(filter -g,$(+cflags))" "" # -g is in $(+cflags)
|
||
LDFLAGS := -g
|
||
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),$(libtype$o))
|
||
object-suffixes := .o
|
||
libtype.o := lib%.a
|
||
ifeq (yes,$(build-shared))
|
||
# Under --enable-shared, we will build a shared library of PIC objects.
|
||
# The PIC object files are named foo.so.
|
||
object-suffixes += .so
|
||
CPPFLAGS-.so = -DPIC
|
||
CFLAGS-.so = -fPIC
|
||
libtype.so := lib%_pic.a
|
||
endif
|
||
ifeq (yes,$(build-profile))
|
||
# Under --enable-profile, we will build a static library of profiled objects.
|
||
# The profiled object files are named foo.po.
|
||
object-suffixes += .po
|
||
CPPFLAGS-.po = -DPROF
|
||
CFLAGS-.po = -pg
|
||
libtype.po = lib%_p.a
|
||
endif
|
||
ifeq (yes,$(build-omitfp))
|
||
# Under --enable-omitfp, we build an the library optimized without
|
||
# debugging information using -fomit-frame-pointer, and build an extra
|
||
# library with debugging information. The debuggable objects are named foo.go.
|
||
object-suffixes += .go
|
||
CFLAGS-.go = -g
|
||
CFLAGS-.o = -g0 -O99 -fomit-frame-pointer
|
||
CFLAGS-.so += $(CFLAGS.o)
|
||
libtype.go = lib%_g.a
|
||
endif
|
||
|
||
|
||
+gnu-stabs = $(shell echo>&2 '*** BARF ON ME')
|
||
|
||
ifneq ($(BUILD_CC),$(CC))
|
||
cross-compiling := yes
|
||
else
|
||
cross-compiling := no
|
||
endif
|
||
|
||
# Figure out the version numbers from version.h.
|
||
|
||
$(common-objpfx)version.mk: $(..)version.h $(..)Makeconfig
|
||
sed -n -e 's/^.*RELEASE.*"\([^"]*\)".*$$/release=\1/p' \
|
||
-e 's/^.*VERSION.*"\([^"]*\)".*$$/version=\1/p' \
|
||
< $< > $@-new
|
||
mv -f $@-new $@
|
||
|
||
endif # Makeconfig not yet included
|