# Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98 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., 59 Temple Place - Suite 330, # Boston, MA 02111-1307, USA. # # Makefile configuration options for the GNU C library. # ifneq (,) This makefile requires GNU Make. endif all: # Make this the default goal 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 := $(patsubst %//,%/,$(objdir)/$(subdir)/) common-objpfx = $(objdir)/ 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 $(common-objpfx)config.make # We have a special subdir for each binary format. # For now, only ELF is fully supported. ifeq ($(elf),yes) binfmt-subdir = elf else # This is probably better than nothing. binfmt-subdir = aout endif # Complete path to sysdep dirs. full-config-sysdirs := $(filter /%, $(config-sysdirs)) \ $(addprefix $(..), $(filter-out /%, $(config-sysdirs))) export full-config-sysdirs := $(full-config-sysdirs) # 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.make.in $(..)config.h.in cd $(&2; \ echo Run \`configure\' to configure it before building. >&2; \ echo Try \`configure --help\' for more details. >&2; \ exit 1; fi # We don't want CPPFLAGS to be exported to the command running configure. unexport CPPFLAGS # Get the user's configuration parameters. ifneq ($(wildcard $(..)configparms),) include $(..)configparms endif ifneq ($(objpfx),) ifneq ($(wildcard $(common-objpfx)configparms),) include $(common-objpfx)configparms endif endif #### #### These are the configuration variables. You can define values for #### the variables below in the file `configparms'. #### Do NOT edit this file. #### # Set this to either `stdio' or `libio', to compile in either GNU stdio # or GNU libio. ifndef stdio stdio = stdio endif # Common prefix for machine-independent installation directories. ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value. prefix = /usr/local endif # Decide whether we shall build the programs or not. We always do this # unless the user tells us (in configparms) or we are building for a # standalone target. ifndef build-programs ifneq ($(config-os),none) build-programs=yes else build-programs=no endif endif # Common prefix for machine-dependent installation directories. ifeq ($(origin exec_prefix),undefined) exec_prefix = $(prefix) endif # Where to install the library and object files. ifndef libdir libdir = $(exec_prefix)/lib endif inst_libdir = $(install_root)$(libdir) # Where to install the shared library and dynamic linker. ifndef slibdir slibdir = $(exec_prefix)/lib endif inst_slibdir = $(install_root)$(slibdir) # 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 inst_includedir = $(install_root)$(includedir) # Where to install machine-independent data files. # These are the timezone database, and the locale database. ifndef datadir datadir = $(prefix)/share endif inst_datadir = $(install_root)$(datadir) # Where to install the timezone data files (which are machine-independent). ifndef zonedir zonedir = $(datadir)/zoneinfo endif inst_zonedir = $(install_root)$(zonedir) # Where to install the locale and message catalog data files (which are # machine-independent). ifndef localedir localedir = $(datadir)/locale endif inst_localedir = $(install_root)$(localedir) # Where to install the locale charmap source files. ifndef i18ndir i18ndir = $(datadir)/i18n endif inst_i18ndir = $(install_root)$(i18ndir) # Where to install the shared object for charset transformation. ifndef gconvdir gconvdir = $(libdir)/gconv endif inst_gconvdir = $(install_root)$(gconvdir) # Where to install programs. ifndef bindir bindir = $(exec_prefix)/bin endif inst_bindir = $(install_root)$(bindir) # Where to install internal programs. ifndef libexecdir libexecdir = $(exec_prefix)/libexec endif inst_libexecdir = $(install_root)$(libexecdir) # Where to install administrative programs. ifndef rootsbindir rootsbindir = $(exec_prefix)/sbin endif inst_rootsbindir = $(install_root)$(rootsbindir) ifndef sbindir sbindir = $(exec_prefix)/sbin endif inst_sbindir = $(install_root)$(sbindir) # Where to install the Info files. ifndef infodir infodir = $(prefix)/info endif inst_infodir = $(install_root)$(infodir) # Where to install default configuration files. These include the local # timezone specification and network data base files. ifndef sysconfdir sysconfdir = $(prefix)/etc endif inst_sysconfdir = $(install_root)$(sysconfdir) # 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 inst_localtime-file = $(install_root)$(localtime-file) 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 = $(CC) endif # Default flags to pass the C compiler. ifndef default_cflags default_cflags := -g -O endif # Flags to pass the C compiler when assembling preprocessed assembly code # (`.S' files). On some systems the assembler doesn't understand the `#' line # directives the preprocessor produces. If you have troubling compiling # assembly code, try using -P here to suppress these directives. ifndef asm-CPPFLAGS asm-CPPFLAGS = endif # ELF always supports init/fini sections ifeq ($(elf),yes) have-initfini = yes endif # Installed name of the startup code. ifneq ($(have-initfini),yes) # When not having init/fini, there is just one startfile, called crt0.o. start-installed-name = crt0.o else # On systems having init/fini, crt0.o is called crt1.o, and there are # some additional bizarre files. start-installed-name = crt1.o 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-installed-name)) \ $(+preinit) $(+prector) \ $(filter-out $(addprefix $(csu-objpfx),start.o \ $(start-installed-name))\ $(+preinit) $(link-extra-libs) \ $(common-objpfx)libc% $(+postinit),$^) \ $(link-extra-libs) $(link-libc) $(+postctor) $(+postinit) endif # Command for statically linking programs with the C library. ifndef +link-static +link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \ $(sysdep-LDFLAGS) $(LDFLAGS) \ $(addprefix $(csu-objpfx),$(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) $(+postinit) endif ifndef config-LDFLAGS ifeq (yes,$(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 = $(common-objdir):$(mathobjdir):$(elfobjdir):$(nssobjdir):$(nisobjdir):$(dbobjdir) mathobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)math) elfobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)elf) nssobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nss) nisobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nis) dbobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)db2) else link-libc = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a endif endif ifndef link-extra-libs ifeq (yes,$(build-shared)) ifneq ($(common-objpfx),$(objpfx)) link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),\ $(wildcard $(common-objpfx)$(lib).so$($(notdir $(lib)).so-version) \ $(objpfx)$(lib).so$($(notdir $(lib)).so-version))) else link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).so$($(notdir $(lib)).so-version)) endif else link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a) endif endif # The static libraries. link-libc-static = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a link-extra-libs-static = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a) ifndef gnulib gnulib := -lgcc endif ifeq ($(elf),yes) +preinit = $(addprefix $(csu-objpfx),crti.o) +postinit = $(addprefix $(csu-objpfx),crtn.o) +prector = `$(CC) --print-file-name=crtbegin.o` +postctor = `$(CC) --print-file-name=crtend.o` endif csu-objpfx = $(common-objpfx)csu/ elf-objpfx = $(common-objpfx)elf/ db-objpfx = $(common-objpfx)db/ # 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 = , sysdep-library-path = \ $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\ $(filter -Wl$(comma)-rpath-link=%,\ $(sysdep-LDFLAGS))))) define built-program-cmd $(elf-objpfx)$(rtld-installed-name) \ --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \ $(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 = $(CC) -M endif # The program that makes Emacs-style TAGS files. ETAGS := etags -T # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and # perhaps others) to preprocess assembly code in some cases. M4 = m4 #### #### End of configuration variables. #### # This tells some versions of GNU make before 3.63 not to export all variables. .NOEXPORT: # We want to echo the commands we're running without # umpteen zillion filenames along with it (we use `...' instead) # but we don't want this echoing done when the user has said # he doesn't want to see commands echoed by using -s. ifneq "$(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) $(+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, # in the parent library source directory and in the include directory. # `+sysdep-includes' will be defined by Makerules. +includes = -I. $(patsubst %/,-I%,$(objpfx)) $(patsubst %/,-I%,$(..)) \ -I$(..)include $($(stdio)-include) $(includes) \ $(+sysdep-includes) $(last-includes) # Since libio has several internal header files, we use a -I instead # of many little headers in the include directory. libio-include = -I$(..)libio # These are the variables that the implicit compilation rules use. CPPFLAGS = $(+includes) $(defines) -include $(..)include/libc-symbols.h \ $(sysdep-CPPFLAGS) $(CPPFLAGS-$(suffix $@)) $(CPPFLAGS-$(&2 '*** BARF ON ME') ifndef BUILD_CC BUILD_CC = $(CC) 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.*"\([^"]*\)".*$$/version=\1/p' \ < $< > $@-new mv -f $@-new $@ common-generated += version.mk ifeq (yes, $(build-shared)) # Process the shlib-versions file, which tells us what shared library # version numbers to use when we install shared objects on this system. -include $(common-objpfx)soversions.mk ifndef avoid-generated $(common-objpfx)soversions.mk: $(..)shlib-versions $(..)Makeconfig \ $(wildcard $(patsubst %, $(..)%/shlib-versions,\ $(add-ons))) \ $(common-objpfx)config.make (file="$(wildcard $(patsubst %,$(..)%/shlib-versions,$(add-ons))) \ $(..)shlib-versions"; \ for f in $$file; do \ sed 's/#.*$$//' $$f | while read conf versions; do \ test -n "$$versions" && \ test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \ : "$$conf"` != 0 || continue; \ for v in $$versions; do \ lib=`echo $$v | sed 's/=.*$$//'`; \ if eval "test -z \"\$$vers_lib$$lib\""; then \ eval vers_lib$${lib}=yes; \ number=`echo $$v | sed "s/^.*=//"`; \ case $$number in \ [0-9]*) echo "$$lib.so-version=.$$number"; \ echo "all-sonames+=$$lib.so\$$($$lib.so-version)";;\ *) echo "$$lib.so-version=$$number"; \ echo "all-sonames+=\$$($$lib.so-version)";; \ esac; \ fi; \ done; \ done; \ done;) > $@T; exit 0 mv -f $@T $@ endif postclean-generated += soversions.mk ifndef avoid-generated # Get $(version) defined with the release version number. -include $(common-objpfx)version.mk endif # Generate the header containing the names of all shared libraries. # We use a stamp file to avoid uncessary recompilations. before-compile += $(common-objpfx)gnu/lib-names.h $(common-objpfx)gnu/lib-names.h: $(common-objpfx)gnu/lib-names.stmp; @: $(common-objpfx)gnu/lib-names.stmp: $(common-objpfx)soversions.mk $(make-target-directory) @rm -f ${@:stmp=T} $@ (echo '/* This file is automatically generated.';\ echo ' It defines macros to allow user program to find the shared';\ echo ' library files which come as part of GNU libc. */';\ echo '#ifndef __GNU_LIB_NAMES_H'; \ echo '#define __GNU_LIB_NAMES_H 1'; \ echo; \ (libs='$(all-sonames)';\ for l in $$libs; do \ upname=`echo $$l | sed 's/[.]so.*//' | \ tr 'abcdefghijklmnopqrstuvwxyz-' \ 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \ echo "#define $${upname}_SO \"$$l\""; \ done;) | sort; \ echo; \ echo '#endif /* gnu/lib-names.h */';) > ${@:stmp=T} if test -r ${@:stmp=h} && cmp -s ${@:stmp=h} ${@:stmp=T}; \ then rm -f ${@:stmp=T}; \ else mv -f ${@:stmp=T} ${@:stmp=h}; fi touch $@ 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 # The librt must be linked with the thread library, at least # for now. ifneq (,$(findstring linuxthreads,$(add-ons))) shared-thread-library = $(common-objpfx)linuxthreads/libpthread.so # Yes, we can compile librt. rt = rt endif endif # build-shared endif # Makeconfig not yet included