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glibc/Makerules
Ulrich Drepper f0e4495937 update from main archive 961101 
Sat Nov  2 01:48:47 1996  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/errnos.h: Move declaration of errno
	and __errno_location to correct position.

Thu Oct 31 22:51:25 1996  Ulrich Drepper  <drepper@cygnus.com>

	* Makefile (distribute): Add rellns-sh.
	* rellns-sh: New file.
	* Makerules (make-link): Use rellns-sh.
	* time/Makefile ($(installed-localtime-file)): Likewise.

Thu Oct 31 11:33:01 1996  Ulrich Drepper  <drepper@cygnus.com>

	* elf/Makefile ($objpfx)ldd) Substitute $(version) for @VERSION@.
	(distribute): Add ldd.bash.in.
	* elf/ldd.sh.in: Process --help and --version parameter.
	Correct comments.
	* elf/ldd.bash.in: New file.

	* stdlib/stdlib.h: Add prototype for clearenv.
	* sysdeps/generic/setenv.c: Add implementation of clearenv.
	(setenv): Handle __environ == NULL correctly.
	* sysdeps/stub/setenv.c: Add stub definition for unsetenv and
	clearenv.

	* sysdeps/generic/putenv.c: Correct layout to fit in libit.
	* sysdeps/generic/setenv.c: Likewise.
	* stdlib/strtol.h: Likewise.

	* time/sys/time.h: Define __need_timeval and include <timebits.h>.
	Remove definition of struct timeval.
	* sysdeps/stub/timebits.h [__need_timeval]: Define struct timeval
	using `time_t' for members.
	* sysdeps/unix/sysv/linux/timebits.h [__need_timeval]: Likewise.
	* sysdeps/unix/sysv/linux/alpha/timebits.h: New file.  Same
	as old Linux specific version.

	* string/argz.h: Use __const in definitions.
	* inet/herrno.c: Don't define __h_errno, only h_errno otherwise the
	__syscall_error defined.
	TRACE_MODE.
	Craig Metz.
	arithmetic.
	buggy and more competent people work on a usable version which is
	distributed separately.
	`finitel'.
	better message if it is not available.
	whether read failed.
	PSEUDO_END macro.
	Especially on the currently supported ELF systems the nlist
	function comes with the libelf.
	"$(i18ndir)/charmaps".
	net/if_arp.h, and net/route.h.
	version.
	EXTERN_PARSER is defined.
	set errno (to ENOMEM).
	nothing is found.  This guarantees all subsequent calls behave
	the same.
	the file even if no `era's are specified.
	pointers.
	_llseek to _llseek (not llseek).
	Initialize `result'.
	end_alt_digits.
	__libc_force_cancel_wrapper when compiling reentrant version.
	a weak alias.
	make tcdrain a weak alias.
	lseek, open, read, and write to have __libc_ prefix and make old
	names a weak alias.
	to fpathconf.
	__libc_setlocale_lock.
	ld.so.preload.  Suggested by David Engel <david@elo.ods.com>.
	on the same device as the password file.
	variable.
	to lock when passing it to __libc_lock_init macro.
	sysdep.h to the top outside of #ifndef PIC.  Don't include errnos.h.
	Use the ENTRY macro.
	9th field.
	and sys/vt.h.
	`_dl_start' so that linking fails if this file should ever be used
	in ld.so.
	RMS' last standard revision.
	(sysdep_headers): Remove sys/sysinfo.h.
	match files in the sysdeps hierachy (welcome back,
	sys/syscall.h!).
	categories which succeeded to load after a wrong or missing data
	file was observed.
	_IO_flockfile and _IO_funlockfile resp.
	all three versions of the math function.
	non-trivial inline functions.
	rpath-link so that running the check finds the new library.
	daylight saving, timezone by time zone.
	syscall_error handler for reentrant libc.
	warning.
	_IO_getc_unlocked.
	in version information banner.
	clearerr_u, feof_u, ferror_u, fputc_u, getc_u, getchar_u,
	iofflush_u, putc_u, putchar_u, ioflockfile.
	using __errno_location function.
	syscall_error handler for reentrant libc.
	definition of function itself.
	funlockfile.
	_malloc_loc.
	but _POSIX_THREAD_DESTRUCTOR_ITERATIONS.
	Add macro `errno' to get thread specific variable.
	__errno_location function.
	* malloc/free.c (free): __lib_malloc_lock -> __libc_malloc_lock.
	case, so don't prepend uppercase `ISO' for only numeric arg.
	call to __libc_lock_lock.
	sys/sysmacros.h.  Reported by Curtiss <1CMC3466@IBM.MTSAC.EDU>.
	stamp file.
	generating stamp file.
	implementation.
	`decimal' char is 0.
	noexpr to "^[nN]"; this conforms to POSIX.2.
	conform to POSIX.2.
	mon_grouping, int_frac_digits, frac_digits, p_cs_precedes,
	p_sep_by_space, n_cs_precedes, n_sep_by_space, p_sign_posn, and
	n_sign_posn to CHAR_MAX, as required by the POSIX Standard.
	variable.
	this changes the global state for `localtime' and `gmtime'.  Use
	`__localtime_r'/`__gmtime_r' instead.
	state.
	getutid_r() fails with ESRCH.  Reported by Miquel van Smoorenburg.
	for "Jensen" so _bus_base() returns 0 on that platform.  Use
	_bus_base_sparse() to determine base address of sparse memory.
	are now in $P/stdio-common.pot.
	script at run time, not configure time.
	warning.
	sorted.
	inet_net_pton, inet_net.
	value of sprintf.
	functions instead of BSD `b*' functions.
	$(objpfx)/mach-syscalls.mk.
	<marcus@sysc.pdx.edu> for the patch.)
	before returning.  Reported by Miles Bader.
	__BEGIN_DECLS/__END_DECLS up so ntohl() et al are bracketed as
	well.
	This is not a gross hack, after all---for compatibility,
	getlogin() really should check fd 0 only and not try to base its
	operation on the controlling tty.
	change utmp_data from static to auto.
	_IO_file_flags.  It's the same as _flags.
	call is only a stub.
	Mikasa.
	pointer as __const.
	segfault when called with an N that is not a multiple of four and
	src[N-1]=='\0'.
	try again with SOCK_STREAM (the Linux syslogd uses a socket of the
	latter type).
	terminator as a record-delimiter.  If __send(LogFile) fails,
	`getutline_r'.
	`setutline_r'.
	of `vscanf'.
	name a weak alias.
	typo.
	initialized in init-first.c.  Some actions in the libc work
	different when libc is static or dynamic.
	`__libc_is_static' variable to determine whether call to
	`personality' and `setfpucw' is necessary.  When done set variable
	to +-1 depending on library type.
	`__libc_enable_secure' instead of calling `get{,e}{g,u}id()' to
	determine whether it's a SET[UG]ID program.
	(open_file): New function, contents mostly from __open.
	LD_TRACE_LOADED_OBJECTS is set.
	n)' equivalent to `strncpy (d, s, n), d += strnlen (d, n)'.
	from the USA any software that even makes it easy to drop in an
	encryption module of foreign origin.
	old code would have failed on a big-endian 64-bit architecture).
	Remove gratitous parentheses around return expressions.
	not int.
	ustatbits.h.
	alphabetically correct place.  Mention ustat.
	record always gets appended at end of file (wtmp is a log file,
	after all).  Set ut_type to DEAD_PROCESS if name is empty.
	ut_line matches and type is either USER_PROCESS or LOGIN_PROCESS.
	avoid duplicate declarations.
	word extends right up to rmargin.
	point_col ssize_t.
	to fiddle __put_limit in conjunction with __linebuf_active.
	of, not the ones he is _not_ a member of.
	instead of a local function.  The latter are difficult to debug
	and slow to execute on certain platforms.
	place of sizeof (dev).  The size of a literal string includes the
	NUL byte.
	entry.  Return 1 on error, not -1.
	shift amount for Jensen must be 5 not 4.
	for send and connect syscalls.
	signed<->unsigned warnings.
	variable name, so new a libc with new requirements won't fail to
	notice an insufficient Linux version.
	PENDIN, NOFLSH): Undefine these at start if they are already
	defined to avoid collision with termbits.h.
	error is 0.  The "placeholder" entries recently added to
	memcpy for possibly overlapping strings.
	instead of weak_symbol (NAME) after the defn.
	necessary using current implementation of memcpy, but...).
	Move struct timespec defn outside [_TIME_H] so it can be got with
	#define __need_timespec.
	__connect instead of connect to avoid name-space collisions (e.g.,
	with psgetty).
	function ctype_is_charmap to ctype_is_charconv.
	charconv.
	charconv.
	lables according to this.
	warnings.
	actually do something.
	sysdeps/unix/sysv/linux/m68k/init-first.h,
	sysdeps/unix/sysv/linux/i386/init-first.h: New files.
	init-first.h to make abstract machine dependent parts of
	typo/extraneous whitespace.
	check-for-pending signals code, release _hurd_siglock before
	jumping to deliver_pending.
	size_t.
	soname of a loaded object, use that object.
	if libnss_dns.so module for DNS name lookup in NSS service.
	guessing to not assume p_vaddr of first load cmd is zero.
	only for ?s, not for *s.  Fix from Chet Ramey.
	about currently used character set.
	name `MAX_IOVEC'.  Instead use standard name `UIO_MAXIOV'.
	(xdrrec_getlong), sunrpc/xdr_mem.c (xdrmem_getlong): Make sure
	appropriate sign-extension is performed on machines with
	sizeof(long) > 4.
	sizeof(int)<sizeof(long), we need to go through a temporary
	variable.
	in efect.
	volatile to avoid "might get clobbered by longjmp" warning.
	unless _LOOSE_KERNEL_NAMES is in effect (which, with high
	probability is a sure loser).
	sysdeps/unix/sysv/linux/alpha/brk.S,
	sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
	sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
	sysdeps/unix/sysv/linux/alpha/llseek.S,
	sysdeps/unix/sysv/linux/alpha/sigsuspend.S,
	sysdeps/unix/sysv/linux/alpha/syscall.S: Rename syscall_error to
	__syscall_error to avoid intruding application name space.
	sysdeps/unix/geteuid.S, sysdeps/unix/getppid.S,
	sysdeps/unix/execve.S, sysdeps/unix/fork.S,
	sysdeps/unix/syscall.S: Terminate syscall with PSEUDO_END.
	(PSEUDO_END): Rename END() to PSEUDO_END().
	to PSEUDO_END to improve branch-prediction.  Include .frame
	directive to make syscalls debugabble.
	sysdeps/unix/sysv/linux/alpha/brk.S: Use ldiq instead of ldi since
	latter is illegal under DEC Unix.
	as well.
	EWOULDBLOCK -> EAGAIN mapping was unnecessary since
	EWOULDBLOCK==EAGAIN under DEC Unix and Linux/Alpha).
	address register in the .frame directive.
	avoid RPC definitions of INADDR_LOOPBACK and/or MAXHOSTNAMELEN.
	compilable under c++.
	as unsigned long, not as int (to avoid incorrect int->long
	promotion).
1996-11-02 01:28:01 +00:00

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# 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.
#
# Common rules for making the GNU C library. This file is included
# by the top-level Makefile and by all subdirectory makefiles
# (through Rules).
#
ifneq (,)
This makefile requires GNU Make.
endif
REQUIRED_MAKE_VERSION = 3.74
ifneq ($(REQUIRED_MAKE_VERSION), \
$(firstword $(sort $(MAKE_VERSION) $(REQUIRED_MAKE_VERSION))))
Wrong GNU Make version. See above for the version needed.
endif
ifdef subdir
.. := ../
endif # subdir
# If `sources' was defined by the parent makefile, undefine it so
# we will later get it from wildcard search in this directory.
ifneq "$(findstring env,$(origin sources))" ""
sources :=
endif
oPATH := $(PATH)
PATH := this definition should take precedence over $(oPATH)
ifeq ($(PATH),$(oPATH))
You must not use the -e flag when building the GNU C library.
else
PATH := $(oPATH)
endif
ifndef +included-Makeconfig
include $(..)Makeconfig
endif
# `configure' writes a definition of `config-sysdirs' in `config.make'.
sysdirs = $(strip $(full-config-sysdirs))
+sysdir_pfx = $(common-objpfx)
export sysdirs := $(sysdirs)
+sysdep_dirs := $(full-config-sysdirs)
ifdef objdir
+sysdep_dirs := $(objdir) $(+sysdep_dirs)
endif
# Add -I switches to get the right sysdep directories.
# `+includes' in Makeconfig references $(+sysdep-includes).
+sysdep-includes := $(addprefix -I,$(+sysdep_dirs))
# The name of the symbol table archive member. The default is suitable for
# BSD style archives. It can be overridden in sysdep Makefiles when SYSV
# style archive are used.
ifeq (no,$(elf))
ar-symtab-name = __.SYMDEF
else
ar-symtab-name = # The null name is used in ELF archives.
endif
# Include any system-specific makefiles.
# This is here so things in sysdep Makefiles can easily depend on foo.h as
# appropriate and not worry about where foo.h comes from, which may be
# system dependent and not known by that Makefile.
vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
$(+sysdep_dirs) $(..)))
# Some sysdep makefiles use this to distinguish being included here from
# being included individually by a subdir makefile (hurd/Makefile needs this).
in-Makerules := yes
ifndef avoid-generated
-include $(+sysdir_pfx)sysd-Makefile
ifneq ($(sysd-Makefile-sysdirs),$(config-sysdirs))
sysd-Makefile-force = FORCE
FORCE:
endif
$(+sysdir_pfx)sysd-Makefile: $(+sysdir_pfx)config.make $(..)Makerules \
$(sysd-Makefile-force)
-@rm -f $@T
(echo 'sysd-Makefile-sysdirs := $(config-sysdirs)'; \
for dir in $(config-sysdirs); do \
file=$$dir/Makefile; \
case $$dir in \
/*) rel= ;; \
*) rel=$(..) ;; \
esac; \
if [ -f $$rel$$file ]; then \
case $$dir in \
/*) echo include "$$file" ;; \
*) echo include "\$$(..)$$file" ;; \
esac; \
else true; fi; \
done; \
echo 'sysd-Makefile-done=t') > $@T
mv -f $@T $@
endif
ifndef sysd-Makefile-done
# Don't do deps until this exists, because it might change the sources list.
no_deps=t
endif
# Reorder before-compile so that mach things come first, and hurd things
# second, before all else. The mach and hurd subdirectories have many
# generated header files which the much of rest of the library depends on,
# so it is best to build them first (and mach before hurd, at that).
before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
$(before-compile)) \
$(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
$(before-compile))
# Remove existing files from `before-compile'. Things are added there when
# they must exist for dependency generation to work right, but once they
# exist there is no further need for every single file to depend on them,
# and those gratuitous dependencies result in many gratuitous
# recompilations.
before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
# Don't let any before-compile file be an intermediate and get removed.
ifdef before-compile
$(before-compile):
endif
# Generate an ordered list of implicit rules which find the source files in
# each sysdep directory. The old method was to use vpath to search all the
# sysdep directories. However, that had the problem that a .S file in a
# later directory would be chosen over a .c file in an earlier directory,
# which does not preserve the desired sysdeps ordering behavior.
# When making the list of .d files to include, we can't know which ones
# have source in .s files, and thus do not in fact need a .d file.
# So we must define rules to make .d files for .s files.
define make-dummy-dep
$(addprefix ln $(common-objpfx)dummy.d ,$(filter-out $(wildcard $@),$@))
endef
$(common-objpfx)dummy.d:
echo '# .s files cannot contain includes, so they need no deps.' > $@
# It matters that this set of rules, for compiling from sources in
# the current directory (the $srcdir/$subdir) come before the
# generated sysdep rules in included from sysd-rules below. When
# compiling in the source tree, generated sources go into the current
# directory, and those should be chosen before any sources in sysdeps.
$(objpfx)%.o: %.S $(before-compile); $(compile-command.S)
$(objpfx)%.so: %.S $(before-compile); $(compile-command.S)
$(objpfx)%.po: %.S $(before-compile); $(compile-command.S)
$(objpfx)%.go: %.S $(before-compile); $(compile-command.S)
$(objpfx)%.d: %.S $(before-compile); $(+make-deps)
$(objpfx)%.o: %.s $(before-compile); $(compile-command.s)
$(objpfx)%.so: %.s $(before-compile); $(compile-command.s)
$(objpfx)%.po: %.s $(before-compile); $(compile-command.s)
$(objpfx)%.go: %.s $(before-compile); $(compile-command.s)
$(objpfx)%.d: %.s $(common-objpfx)dummy.d; $(make-dummy-dep)
$(objpfx)%.o: %.c $(before-compile); $(compile-command.c)
$(objpfx)%.so: %.c $(before-compile); $(compile-command.c)
$(objpfx)%.po: %.c $(before-compile); $(compile-command.c)
$(objpfx)%.go: %.c $(before-compile); $(compile-command.c)
$(objpfx)%.d: %.c $(before-compile); $(+make-deps)
# Omit the objpfx rules when building in the source tree, because
# objpfx is empty and so these rules just override the ones above.
ifdef objpfx
# Define first rules to find the source files in $(objpfx).
# Generated source files will end up there.
$(objpfx)%.o: $(objpfx)%.S $(before-compile); $(compile-command.S)
$(objpfx)%.so: $(objpfx)%.S $(before-compile); $(compile-command.S)
$(objpfx)%.po: $(objpfx)%.S $(before-compile); $(compile-command.S)
$(objpfx)%.go: $(objpfx)%.S $(before-compile); $(compile-command.S)
$(objpfx)%.d: $(objpfx)%.S $(before-compile); $(+make-deps)
$(objpfx)%.o: $(objpfx)%.s $(before-compile); $(compile-command.s)
$(objpfx)%.so: $(objpfx)%.s $(before-compile); $(compile-command.s)
$(objpfx)%.po: $(objpfx)%.s $(before-compile); $(compile-command.s)
$(objpfx)%.go: $(objpfx)%.s $(before-compile); $(compile-command.s)
$(objpfx)%.d: $(objpfx)%.s $(common-objpfx)dummy.d; $(make-dummy-dep)
$(objpfx)%.o: $(objpfx)%.c $(before-compile); $(compile-command.c)
$(objpfx)%.so: $(objpfx)%.c $(before-compile); $(compile-command.c)
$(objpfx)%.po: $(objpfx)%.c $(before-compile); $(compile-command.c)
$(objpfx)%.go: $(objpfx)%.c $(before-compile); $(compile-command.c)
$(objpfx)%.d: $(objpfx)%.c $(before-compile); $(+make-deps)
endif
# System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
# patterns matching sysdep directories whose assembly source files should
# be suppressed.
ifdef inhibit-sysdep-asm
define open-check-inhibit-asm
case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
endef
close-check-inhibit-asm = ;; esac ;
endif
# Don't include sysd-rules until sysd-Makefile is already there and has been
# included. It might define inhibit-sysdep-asm, which would affect the
# contents of sysd-rules.
ifdef sysd-Makefile-done
-include $(+sysdir_pfx)sysd-rules
ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
# The value of $(+sysdep_dirs) the sysd-rules was computed for
# differs from the one we are using now. So force a rebuild of sysd-rules.
sysd-rules-force = FORCE
FORCE:
endif
endif
$(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
$(wildcard $(foreach dir,$(sysdirs),\
$(dir)/Makefile))\
$(sysd-rules-force)
-@rm -f $@T
(echo 'sysd-rules-sysdirs := $(config-sysdirs)'; \
for sysdir in $(config-sysdirs); do \
case $$sysdir in \
/*) dir=$$sysdir ;; \
*) dir="\$$(..)$$sysdir" ;; \
esac; \
for o in $(object-suffixes); do \
$(open-check-inhibit-asm) \
echo "\$$(objpfx)%$$o: $$dir/%.S \$$(before-compile); \
\$$(compile-command.S)"; \
echo "\$$(objpfx)%$$o: $$dir/%.s \$$(before-compile); \
\$$(compile-command.s)"; \
$(close-check-inhibit-asm) \
echo "\$$(objpfx)%$$o: $$dir/%.c \$$(before-compile); \
\$$(compile-command.c)"; \
done; \
$(open-check-inhibit-asm) \
echo "\$$(objpfx)%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
\$$(make-dummy-dep)"; \
echo "\$$(objpfx)%.d: $$dir/%.S \$$(before-compile); \
\$$(+make-deps)"; \
$(close-check-inhibit-asm) \
echo "\$$(objpfx)%.d: $$dir/%.c \$$(before-compile); \
\$$(+make-deps)"; \
done; \
echo 'sysd-rules-done = t') > $@T
mv -f $@T $@
ifndef sysd-rules-done
# Don't do deps until this exists, because it provides rules to make the deps.
no_deps=t
endif
ifndef compile-command.S
compile-command.S = $(compile.S) $(OUTPUT_OPTION)
endif
ifndef compile-command.s
compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION)
endif
ifndef compile-command.c
compile-command.c = $(compile.c) $(OUTPUT_OPTION)
endif
# GCC can grok options after the file name, and it looks nicer that way.
compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
compile.S = $(CC) $< -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS)
COMPILE.S = $(CC) -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS)
COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
# We need this for the output to go in the right place. It will default to
# empty if make was configured to work with a cc that can't grok -c and -o
# together. You can't compile the C library with such a compiler.
OUTPUT_OPTION = -o $@
S-CPPFLAGS = $(asm-CPPFLAGS)
define +make-deps
$(make-target-directory)
-@rm -f $@
$(+mkdep) $< $(CPPFLAGS) $($(<:$*.%=%)-CPPFLAGS) | \
sed -e 's,$(subst .,\.,$*)\.o,$(foreach o,$(object-suffixes),$(@:.d=$o)) $@,' \
$(sed-remove-objpfx) > $(@:.d=.T)
mv -f $(@:.d=.T) $@
endef
ifneq (,$(objpfx))
# Continuation lines here are dangerous because they introduce spaces!
define sed-remove-objpfx
-e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
-e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
endef
endif
# Shared library building.
ifeq (yes,$(build-shared))
# Pattern rule to build a shared object from an archive of PIC objects.
# This must come after the installation rules so Make doesn't try to
# build shared libraries in place from the installed *_pic.a files.
# $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
# on other shared objects.
lib%.so: lib%_pic.a; $(build-shlib)
ifeq ($(have-no-whole-archive),yes)
no-whole-archive = -Wl,--no-whole-archive
else
no-whole-archive =
endif
interp-obj = $(common-objpfx)interp.so
$(interp-obj): $(common-objpfx)%.so: $(..)%.c
$(compile-command.c)
common-generated += interp.so
CFLAGS-interp.c = -D'RUNTIME_LINKER="$(slibdir)/$(rtld-installed-name)"'
$(common-objpfx)libc.so: $(interp-obj)
$(patsubst %,$(objpfx)%.so,$(extra-libs)): $(interp-obj)
define build-shlib
$(LINK.o) -shared -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS) \
-B$(csu-objpfx) \
-Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
$(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
-L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link) \
-Wl,--whole-archive $^ $(no-whole-archive) \
$(LDLIBS-$(@F:lib%.so=%).so)
endef
# Don't try to use -lc when making libc.so itself.
# Also omits crti.o and crtn.o, which we do not want
# since we define our own `.init' section specially.
LDFLAGS-c.so = -nostdlib -nostartfiles
# Give libc.so an entry point and make it directly runnable itself.
LDFLAGS-c.so += -e __libc_main
# Use our own special initializer and finalizer files for libc.so.
elfobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)elf)
$(common-objpfx)libc.so: $(elfobjdir)/soinit.so \
$(common-objpfx)libc_pic.a \
$(elfobjdir)/sofini.so $(elfobjdir)/ld.so
$(build-shlib)
ifdef libc.so-version
$(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
rm -f $@
ln -s $(<F) $@ || ln $< $@
endif
endif
# Some files must not be compiled with the exception handler mechanism
# enabled (introduced in gcc-2.8). Use $(no-exceptions) in the
# appropriate CFLAGS definition.
ifeq ($(have-no-exceptions),yes)
no-exceptions = -fno-exceptions
else
no-exceptions =
endif
# Figure out the source filenames in this directory.
override sources := $(addsuffix .c,$(filter-out $(elided-routines),\
$(routines) $(aux) \
$(sysdep_routines)))
sysdep_routines := $(sysdep_routines)
headers := $(headers) $(sysdep_headers)
# This is the list of all object files, gotten by
# replacing every ".c" in `sources' with a ".o".
override objects := $(addprefix $(objpfx),$(sources:.c=.o))
# This variable is used in ``include $(o-iterator)'' after defining
# $(o-iterator-doit) to produce some desired rule using $o for the object
# suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy
# is produced for each object suffix in use.
o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes-left))
# The makefile may define $(extra-libs) with `libfoo libbar'
# to build libfoo.a et al from the modules listed in $(libfoo-routines).
ifdef extra-libs
# extra-lib.mk is included once for each extra lib to define rules
# to build it, and to add its objects to the various variables.
# During its evaluation, $(lib) is set to the name of the library.
extra-libs-left := $(extra-libs)
include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
endif
+depfiles := $(strip $(sources:.c=.d) \
$(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.so=.o))) \
$(addsuffix .d,$(others) $(tests)))
+depfiles := $(addprefix $(objpfx),\
$(filter-out $(addsuffix .d,$(omit-deps)),\
$(+depfiles)))
ifdef +depfiles
ifneq ($(no_deps),t)
-include $(+depfiles)
endif
endif
# Maximize efficiency by minimizing the number of rules.
.SUFFIXES: # Clear the suffix list.
# Add the suffixes we use.
.SUFFIXES: .a $(object-suffixes) .S .s .c .h .d
# Generic rule for making directories.
%/:
# mkdir isn't smart enough to strip a trailing /.
mkdir $(@:%/=%)
# Make sure that object files are not removed
# when they are intermediates between sources and library members.
.PRECIOUS: $(addprefix $(objpfx)%,$(object-suffixes))
# Make sure that the parent library archive is never removed.
.PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
# Use the verbose option of ar and tar when not running silently.
ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
verbose := v
else # -s
verbose :=
endif # not -s
ARFLAGS := r$(verbose)
# This makes all the object files in the parent library archive.
.PHONY: lib libobjs lib-noranlib
lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
# Pattern rule for libraries: depend on the __.SYMDEF member updated by ranlib.
lib%.a: lib%.a($(ar-symtab-name)) ;
# For object-suffix $o, the list of objects with that suffix.
# Makefiles can define `elide-routines.so = foo' to leave foo.so out.
o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
$(elide-routines$o)),\
$(objects)))
libobjs: $(foreach o,$(object-suffixes),\
$(common-objpfx)$(patsubst %,$(libtype$o),c)(\
$(notdir $(o-objects))))
lib-noranlib: libobjs
others: $(addprefix $(objpfx),$(install-lib))
ifndef objects
# Create the stamp$o files to keep the parent makefile happy.
subdir_lib: $(foreach o,$(object-suffixes),$(objpfx)stamp$o-$(subdir))
$(foreach o,$(object-suffixes),$(objpfx)stamp$o-$(subdir)):
$(make-target-directory)
rm -f $@; > $@
else
# Define a pattern rule that will match many targets libc.a(foo.%), for
# each foo.o in $(objects) (% will just happen always to match `o'). This is
# the only way to define a rule that updates many targets at once with one
# sequence of commands.
define o-iterator-doit
$(common-objpfx)$(patsubst %,$(libtype$o),c)(\
$(addsuffix .%,$(filter-out $(elide-routines$o),$(notdir $(objects:.o=))))): \
$(objpfx)stamp.%-$(subdir) ;
endef
object-suffixes-left := $(object-suffixes)
include $(o-iterator)
# The pattern rule tells Make to remake $(objpfx)stamp.%-$(subdir) as
# the way to update all the foo.% object files in $(objects). Now we
# define explicit rules to update each $(objpfx)stamp.SUFFIX-$(subdir)
# timestamp file; these rules (one explicit rule is generated for each
# object suffix) will update the parent archive with ar. Use a static
# pattern rule so $* is set to the object type during the commands.
define o-iterator-doit
$(objpfx)stamp$o-$(subdir): $(objpfx)stamp%-$(subdir): $(o-objects); $$(do-ar)
endef
object-suffixes-left := $(object-suffixes)
include $(o-iterator)
define do-ar
topdir=`cd $(..).; pwd`; \
$(patsubst %/,cd %;,$(objpfx)) \
$(SHELL) $$topdir/autolock.sh ${O%-lib}.lck $(AR) cru$(verbose) ${O%-lib} \
$(patsubst $(objpfx)%,%,$^)
rm -f $@
touch $@
endef
O%-lib = $(..)$(patsubst %,$(libtype$*),c)
endif
# Rules to update the $(ar-symtab-name) member with ranlib,
# one for each object flavor.
define o-iterator-doit
$(common-objpfx)$(patsubst %,$(libtype$o),c)($(ar-symtab-name)): \
$(common-objpfx)$(patsubst %,$(libtype$o),c)(\
$(patsubst $(objpfx)%,%,$(o-objects))) $(subdirs-stamp-o); \
$(SHELL) $$(..)./autolock.sh \
$$(common-objpfx)$$(patsubst %,$$(libtype$o),c).lck \
$$(RANLIB) $$(common-objpfx)$$(patsubst %,$$(libtype$o),c)
endef
ifndef subdir
subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%-$d)
subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
$(subdirs-stamps): subdir_lib;
endif
object-suffixes-left = $(object-suffixes)
include $(o-iterator)
# This makes all the object files.
.PHONY: objects objs
objects objs: $(foreach o,$(object-suffixes),$(o-objects)) \
$(addprefix $(objpfx),$(extra-objs))
# Canned sequence for building an extra library archive.
define build-extra-lib
$(patsubst %/,cd %;,$(objpfx)) \
$(AR) cru$(verbose) $(@:$(objpfx)%=%) \
$(patsubst $(objpfx)%,%,$^)
$(RANLIB) $@
endef
# Installation.
# $(install-lib) are installed from the object directory into $(libdir);
# files in $(install-lib) matching `lib%.a' are ranlib'd after installation
# unless they also appear in $(non-lib.a). $(install-data) are installed
# as they are into $(datadir). $(headers) are installed as they are in
# $(includedir). $(install-bin) and $(install-sbin) are installed from the
# object directory into $(bindir) and $(sbindir), respectively.
# $(install-others) are absolute path names of files to install; rules to
# install them are defined elsewhere.
# The simple library name to install libc.a under.
# This could be defined by a sysdep Makefile.
ifndef libc-name
libc-name := c
endif
define do-install
$(make-target-directory)
$(INSTALL_DATA) $< $@
endef
# Make the target directory if it doesn't exist, using the `mkinstalldirs'
# script that does `mkdir -p' even if `mkdir' doesn't support that flag.
define make-target-directory
$(addprefix $(..)./mkinstalldirs ,\
$(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
endef
# Any directory (parent or subdir) that has any object files to build
# should install libc.a; this way "make install" in a subdir is guaranteed
# to install everything it changes.
ifdef objects
installed-libcs := $(foreach o,$(object-suffixes),\
$(libdir)/$(patsubst %,$(libtype$o),\
$(libprefix)$(libc-name)))
installed-libcs := $(filter-out %_pic.a,$(installed-libcs))
install: $(installed-libcs)
$(installed-libcs): $(libdir)/lib$(libprefix)%: lib
$(make-target-directory)
$(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
# Running ranlib after installing makes the __.SYMDEF time stamp up to
# date, which avoids messages from some linkers.
$(RANLIB) $@
endif
define do-install-program
$(make-target-directory)
$(INSTALL_PROGRAM) $< $@.new
mv -f $@.new $@
endef
install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
install-lib := $(filter-out %.so %_pic.a,$(install-lib))
ifeq (yes,$(build-shared))
install-lib-nosubdir: $(install-lib.so:%=$(libdir)/%)
# Find which .so's have versions.
versioned := $(strip $(foreach so,$(install-lib.so),\
$(patsubst %,$(so),$($(so)-version))))
# Install all the unversioned shared libraries.
$(addprefix $(slibdir)/,$(filter-out $(versioned),$(install-lib.so))): \
$(slibdir)/%.so: $(objpfx)%.so; $(do-install-program)
define make-link
cd $(@D); \
rm -f $(@F).new; \
if test '$(@D)' = '$(<D)'; then \
$(LN_S) $(<F) $(@F).new; \
else \
$(SHELL) $(common-objpfx)$(..)rellns-sh $< $(@F).new; \
fi; \
mv -f $(@F).new $(@F)
endef
ifdef libc.so-version
# For a library specified to be version N, install three files:
# libc.so -> libc.so.N (e.g. libc.so.6)
# libc.so.6 -> libc-VERSION.so (e.g. libc-1.10.so)
$(slibdir)/libc.so$(libc.so-version): $(slibdir)/libc-$(version).so
$(make-link)
$(slibdir)/libc-$(version).so: $(common-objpfx)libc.so; $(do-install-program)
install: $(slibdir)/libc.so$(libc.so-version)
ifndef subdir
# What we install as libc.so for programs to link against is in fact a
# link script. It contains references for the various libraries we need.
# The libc.so object is not complete since some functions are only defined
# in libc.a and the dynamic linker is an etra object.
install: $(libdir)/libc.so
$(libdir)/libc.so: $(common-objpfx)libc.so$(libc.so-version) \
$(elfobjdir)/$(rtld-installed-name) \
$(libdir)/lib$(libc-name).a
(echo '/* Use the shared library, but some functions are only in';\
echo ' the static library, so try that secondarily.'; \
echo ' The dynamic linker defines some functions used by $(<F),';\
echo ' but ld uses definitions from libc.a before examining the';\
echo ' dependencies of $(<F) to find $(rtld-installed-name). */';\
echo 'GROUP ( $(^F) )') > $@.new
mv -f $@.new $@
endif
else
install: $(slibdir)/libc.so
$(slibdir)/libc.so: $(common-objpfx)libc.so; $(do-install-program)
endif
ifneq (,$(versioned))
# Produce three sets of rules as above for all the smaller versioned libraries.
define o-iterator-doit
$(libdir)/$o: $(slibdir)/$o$($o-version); $$(make-link)
endef
object-suffixes-left := $(versioned)
include $(o-iterator)
# Make symlinks in the build directory, because the versioned names might
# be referenced by a DT_NEEDED in another library.
define o-iterator-doit
$(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
endef
object-suffixes-left := $(versioned)
include $(o-iterator)
ifeq (,$($(subdir)-version))
define o-iterator-doit
$(slibdir)/$o$($o-version): $(slibdir)/$(o:.so=)-$(version).so; $$(make-link)
endef
object-suffixes-left := $(versioned)
include $(o-iterator)
define o-iterator-doit
$(slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o; $$(do-install-program)
endef
object-suffixes-left := $(versioned)
include $(o-iterator)
else
define o-iterator-doit
$(slibdir)/$o$($o-version): $(slibdir)/$(o:.so=)-$($(subdir)-version).so;
$$(make-link)
endef
object-suffixes-left := $(versioned)
include $(o-iterator)
define o-iterator-doit
$(slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o;
$$(do-install-program)
endef
object-suffixes-left := $(versioned)
include $(o-iterator)
endif
endif
define do-install-so
$(do-install-program)
$(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
$(filter-out %.so,$@))
endef
so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
$(foreach v,$(so-versions),\
$(slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so
$(do-install-so)
$(foreach v,$(so-versions),\
$(slibdir)/$(libprefix)%$v): $(common-objpfx)%.so
$(do-install-so)
endif
ifdef install-bin
$(addprefix $(bindir)/,$(install-bin)): $(bindir)/%: $(objpfx)%
$(do-install-program)
endif
ifdef install-sbin
$(addprefix $(sbindir)/,$(install-sbin)): $(sbindir)/%: $(objpfx)%
$(do-install-program)
endif
ifdef install-lib
install-lib.a := $(filter lib%.a,$(install-lib))
install-lib-non.a := $(filter-out lib%.a,$(install-lib))
ifdef install-lib-non.a
$(addprefix $(libdir)/$(libprefix),$(install-lib-non.a)): \
$(libdir)/$(libprefix)%: $(objpfx)%
$(do-install)
endif
ifdef install-lib.a
$(install-lib.a:lib%.a=$(libdir)/lib$(libprefix)%.a): \
$(libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a
$(do-install)
$(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
endif
endif
ifdef install-data
$(addprefix $(datadir)/,$(install-data)): $(datadir)/%: %;$(do-install)
endif
headers := $(strip $(headers))
ifdef headers
$(addprefix $(includedir)/,$(headers)): \
$(includedir)/%: %;$(do-install)
endif # headers
.PHONY: install-bin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
install-data-nosubdir install-headers-nosubdir
install-bin-nosubdir: $(addprefix $(bindir)/,$(install-bin))
install-sbin-nosubdir: $(addprefix $(sbindir)/,$(install-sbin))
install-lib-nosubdir: $(addprefix $(libdir)/,\
$(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
$(addprefix $(libprefix),$(install-lib-non.a)))
install-data-nosubdir: $(addprefix $(datadir)/,$(install-data))
install-headers-nosubdir: $(addprefix $(includedir)/,$(headers))
install-others-nosubdir: $(install-others)
# We need all the `-nosubdir' targets so that `install' in the parent
# doesn't depend on several things which each iterate over the subdirs.
# This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
# subroutine. Then in the parent `install-FOO' also causes subdir makes.
install-%:: install-%-nosubdir ;
.PHONY: install install-no-libc.a-nosubdir
install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
install-bin-nosubdir install-lib-nosubdir \
install-others-nosubdir install-sbin-nosubdir
install: install-no-libc.a-nosubdir
# Command to compile $< in $(objdir) using the native libraries.
define native-compile
cwd=`pwd`; cd $(@D); $(BUILD_CC) $(BUILD_CFLAGS) \
$(addprefix $$cwd/,$^) -o $(@F)
endef
# Command to compile $< in $(common-objdir) using the native libraries.
# We must cd to $(objdir) anyway so that $(..)config.h is valid.
define common-objdir-compile
cd $(objpfx).; \
$(BUILD_CC) $(BUILD_CFLAGS) $(<:$(common-objpfx)%=$(..)%) -o $(..)$(@F)
endef
# We always want to use configuration definitions.
BUILD_CFLAGS = -include $(..)config.h
# Support the GNU standard name for this target.
.PHONY: check
check: tests
.PHONY: TAGS
TAGS: $(common-objpfx)distinfo-$(subdir) $(..)MakeTAGS
$(MAKE) $(addprefix -f ,$^) $@
$(..)po/%.pot: $(common-objpfx)distinfo-$(subdir) $(..)MakeTAGS FORCE
$(MAKE) $(addprefix -f ,$(filter-out FORCE,$^)) $@
FORCE:
.PHONY: echo-headers
echo-headers:
@echo $(headers)
# Common cleaning targets.
.PHONY: common-mostlyclean common-clean mostlyclean clean
clean: common-clean
mostlyclean: common-mostlyclean
# Remove the object files.
common-mostlyclean:
-rm -f $(addprefix $(objpfx),$(tests) $(others) \
$(addsuffix .o,$(tests) $(others)) \
$(addsuffix .out,$(tests)))
-rm -f $(addprefix $(objpfx),$(extra-objs) $(install-lib))
-rm -f core $(common-objpfx)stub-$(subdir)
$(rmobjs)
define rmobjs
$(foreach o,$(object-suffixes),
-rm -f $(addprefix $(objpfx),stamp$o-$(subdir)) $(o-objects))
endef
# Also remove the dependencies and generated source files.
common-clean: common-mostlyclean
-rm -f $(addprefix $(objpfx),$(generated)) $(+depfiles)
-rm -f $(addprefix $(common-objpfx),$(common-generated))
-rm -f $(common-objpfx)distinfo-$(subdir)
# Produce a file `stub-$(subdir)' which contains `#define __stub_FUNCTION'
# for each function which is a stub. We grovel over all the .d files
# looking for references to source files in sysdeps/stub. Then we grovel
# over each referenced source file to see what stub function it defines.
.PHONY: stubs # The parent Makefile calls this target.
stubs: $(common-objpfx)stub-$(subdir)
s = $(sysdep_dir)/stub
$(common-objpfx)stub-$(subdir): $(+depfiles)
# Use /dev/null since `...` might expand to empty.
(s=`cd $s; /bin/pwd`; \
$(patsubst %/,cd %;,$(objpfx)) \
sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
`sed -n 's@^.*$s/\([a-z0-9_-]*\.c\).*$$@'"$$s"/'\1@p' \
$(patsubst $(objpfx)%,%,$^) /dev/null` \
/dev/null) > $@T
mv -f $@T $@
# Make the distribution tar file.
.PHONY: dist
dist: $(common-objpfx)distinfo-$(subdir) $(..)Make-dist
$(MAKE) -f $< -f $(word 2,$^) $(Make-dist-args)
# Avoid depending on source files found in sysdeps dirs,
# because the references affect implicit rule selection.
dist: $(filter-out %.c %.S %.s,$(distribute))
# We used to simply export all these variables, but that frequently made the
# environment get too large. Instead, we write all the information into
# a generated makefile fragment `distinfo', and then include it with -f in
# the sub-make that makes the distribution (above).
$(common-objpfx)distinfo-$(subdir): Makefile $(..)Makerules
$(distinfo-vars)
mv -f $@.new $@
.PHONY: subdir_distinfo distinfo
subdir_distinfo: distinfo
distinfo: $(common-objpfx)distinfo-$(subdir)
define distinfo-vars
rm -f $@.new
echo > $@.new 'subdir := $(subdir)'
$(foreach var,subdir-dirs sources elided-routines sysdep_routines \
headers sysdep_headers distribute dont_distribute generated \
others tests extra-libs $(extra-libs:%=%-routines) \
versioned \
$(addprefix install-,lib lib.so data bin sbin others),
echo >> $@.new '$(subdir)-$(var) := $($(var))'
echo >> $@.new '$(var) = $$($(subdir)-$(var))')
endef
ifneq (,$(strip $(gpl2lgpl)))
ifneq (,$(wildcard $(..)gpl2lgpl.sed))
# Snarf from the master source and frob the copying notice.
$(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
sed -f $^ > $@-tmp
# So I don't edit them by mistake.
chmod a-w $@-tmp
mv -f $@-tmp $@
test ! -d CVS || cvs commit -m'Updated from $^' $@
endif
endif
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