# Copyright (C) 1991-2003,2004,2005,2006,2007,2008 # 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 Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 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 # Lesser General Public License for more details. # You should have received a copy of the GNU Lesser General Public # License along with the GNU C Library; 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 # What flags to give to sources which call user provided callbacks uses-callbacks = $(exceptions) # What flags to give to tests which test stack alignment stack-align-test-flags = # We have a special subdir for each binary format. # For now, only ELF is fully supported. ifeq ($(elf),yes) binfmt-subdir = elf else # This is probably better than nothing. binfmt-subdir = aout endif # Complete path to sysdep dirs. # `configure' writes a definition of `config-sysdirs' in `config.make'. sysdirs := $(foreach D,$(config-sysdirs),$(firstword $(filter /%,$D) $(..)$D)) # Add-ons that contribute sysdeps trees get added to the include list # after sysdeps/generic. This makes #include work right # to find specific add-on files without assuming the add-on directory name. # It also means that headers can go into an add-on's base directory # instead of the add-on needing a sysdeps/generic of its own. sysdeps-srcdirs := $(foreach add-on,$(sysdeps-add-ons),\ $(firstword $(filter /%,$(add-on)) \ $(..)$(add-on))) +sysdep_dirs = $(sysdirs) $(sysdeps-srcdirs) ifdef objdir +sysdep_dirs := $(objdir) $(+sysdep_dirs) endif # 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 $(common-objpfx)configparms endif endif #### #### These are the configuration variables. You can define values for #### the variables below in the file `configparms'. #### Do NOT edit this file. #### # Common prefix for machine-independent installation directories. ifeq ($(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 = $(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 files. ifndef localedir localedir = $(libdir)/locale endif inst_localedir = $(install_root)$(localedir) # Where to install the message catalog data files (which are # machine-independent). ifndef msgcatdir msgcatdir = $(datadir)/locale endif inst_msgcatdir = $(install_root)$(msgcatdir) # 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_SCRIPT INSTALL_SCRIPT = $(INSTALL) 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 = $(CC) endif # Default flags to pass the C compiler. ifndef default_cflags ifeq ($(release),stable) default_cflags := -g -O2 else default_cflags := -g -O endif 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 # On systems that do not need a special startfile for statically linked # binaries, simply set it to the normal name. ifndef static-start-installed-name static-start-installed-name = $(start-installed-name) endif ifeq (yesyesyes,$(build-shared)$(elf)$(have-z-combreloc)) combreloc-LDFLAGS = -Wl,-z,combreloc LDFLAGS.so += $(combreloc-LDFLAGS) LDFLAGS-rtld += $(combreloc-LDFLAGS) endif relro-LDFLAGS = -Wl,-z,relro LDFLAGS.so += $(relro-LDFLAGS) LDFLAGS-rtld += $(relro-LDFLAGS) ifeq (yes,$(have-hash-style)) # For the time being we unconditionally use 'both'. At some time we # should declare statically linked code as 'out of luck' and compile # with --hash-style=gnu only. hashstyle-LDFLAGS = -Wl,--hash-style=both LDFLAGS.so += $(hashstyle-LDFLAGS) LDFLAGS-rtld += $(hashstyle-LDFLAGS) endif # Command for linking programs with the C library. ifndef +link +link = $(CC) -nostdlib -nostartfiles -o $@ \ $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \ $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-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) $(LDFLAGS-$(@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) $(+postinit) endif ifndef config-LDFLAGS ifeq (yesyes,$(build-shared)$(elf)) config-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name) endif endif ifndef link-libc ifeq (yes,$(build-shared)) ifeq ($(elf),yes) # 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) $(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 endif 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 $(gnulib) endif endif # Differences in the linkers on the various platforms. ifeq ($(elf),yes) LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN' LDFLAGS-soname-fname = -Wl,-soname,$(@F) LDFLAGS-rdynamic = -rdynamic LDFLAGS-Bsymbolic = -Bsymbolic endif # 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. ifeq (yes,$(build-static)) link-libc-static = $(common-objpfx)libc.a $(static-gnulib) $(common-objpfx)libc.a else ifeq (yes,$(build-shared)) # We can try to link the programs with lib*_pic.a... link-libc-static = $(static-gnulib) $(common-objpfx)libc_pic.a endif endif 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 ifneq ($(have-as-needed),yes) libgcc_eh := -lgcc_eh $(libunwind) else libgcc_eh := -Wl,--as-needed -lgcc_s$(libgcc_s_suffix) $(libunwind) -Wl,--no-as-needed endif gnulib := -lgcc $(libgcc_eh) static-gnulib := -lgcc -lgcc_eh $(libunwind) libc.so-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` +interp = $(addprefix $(elf-objpfx),interp.os) endif 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 (yesyes,$(build-shared)$(elf)) comma = , sysdep-library-path = \ $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\ $(filter -Wl$(comma)-rpath-link=%,\ $(sysdep-LDFLAGS))))) # Never use $(run-via-rtld-prefix) for the statically-linked %-bp test # programs, or for tests listed in tests-static or xtests-static. run-via-rtld-prefix = \ $(if $(strip $(filter $(notdir $(built-program-file)), \ $(tests-static) $(xtests-static)) \ $(filter %-bp,$(built-program-file))),, \ $(elf-objpfx)$(rtld-installed-name) \ --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path))) else run-via-rtld-prefix = endif run-program-prefix = $(cross-test-wrapper) $($*-WRAPPER) \ $(run-via-rtld-prefix) built-program-cmd = $(cross-test-wrapper) $($*-WRAPPER) \ $(run-via-rtld-prefix) $(built-program-file) # Same as built-program-cmd, but without the cross-test-wrapper. Used # to run programs from the test machine, as in nptl/tst-cancel7. local-built-program-cmd = $(run-via-rtld-prefix) $(built-program-file) ifndef LD LD := ld -X endif ifndef RANLIB RANLIB = ranlib 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 = $($(subdir)-CPPFLAGS) $(+includes) $(defines) \ -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \ $(CPPFLAGS-$(suffix $@)) \ $(foreach lib,$(libof-$(basename $(@F))) \ $(libof-$( $@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 ifeq ($(elf),yes) dlfcn = dlfcn ifeq ($(build-shared),yes) libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version) else libdl = $(common-objpfx)dlfcn/libdl.a endif else ifneq (,$(findstring aix,$(config-os))) ifeq ($(build-shared),yes) dlfcn = dlfcn libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version) else # No libdl without shared libs on AIX dlfcn = libdl = endif else # No ELF, no AIX - no libdl, at least for now. dlfcn = libdl = endif endif # Generate a header file that #defines preprocessor symbols indicating # which option groups are enabled. Note that the option-groups.config file # may not exist at all. before-compile += $(common-objpfx)gnu/option-groups.h common-generated += gnu/option-groups.h gnu/option-groups.stmp headers += gnu/option-groups.h $(common-objpfx)gnu/option-groups.h: $(common-objpfx)gnu/option-groups.stmp; @: $(common-objpfx)gnu/option-groups.stmp: \ $(..)scripts/option-groups.awk \ $(..)option-groups.defaults \ $(wildcard $(common-objpfx)option-groups.config) $(make-target-directory) @rm -f ${@:stmp=T} $@ LC_ALL=C $(AWK) -f $^ > ${@:stmp=T} $(move-if-change) ${@:stmp=T} ${@:stmp=h} touch $@ # 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 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-%:% 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 := $(foreach p,$(sysd-rules-patterns),\ $(firstword $(subst :, ,$p))) endif # Makeconfig not yet included # Local Variables: # mode: makefile # End: