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Remove add-ons mechanism.

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glibc has an add-ons mechanism to allow additional software to be
integrated into the glibc build.  Such add-ons may be within the glibc
source tree, or outside it at a path passed to the --enable-add-ons
configure option.

localedata and crypt were once add-ons, distributed in separate
release tarballs, but long since stopped using that mechanism.
Linuxthreads was always an add-on.  Ports spent some time as an add-on
with separate release tarballs, then was first moved into the glibc
source tree, then had its sysdeps files moved into the main sysdeps
hierarchy so the add-ons mechanism was no longer used.  NPTL spent
some time as an add-on in the main glibc tree before stopping using
the add-on mechanism.  libidn used to have separate release tarballs
but no longer does so, but still uses the add-ons mechanism within the
glibc source tree.  Various other software has supported building with
the add-ons mechanism at times in the past, but I don't think any is
still widely used.

Add-ons involve significant, little-used complexity in the glibc build
system, and make it hard to understand what the space of possible
glibc configurations is.  This patch removes the add-ons mechanism.
libidn is now built via the Subdirs mechanism to cause any
configuration using sysdeps/unix/inet to build libidn; HAVE_LIBIDN
(which effectively means shared libraries are available) is now
defined via sysdeps/unix/inet/configure.  Various references to
add-ons around the source tree are removed (in the case of maint.texi,
the example list of sysdeps directories is still very out of date).

Externally maintained ports should now put their files in the normal
sysdeps directory structure rather than being arranged as add-ons;
they probably need to change e.g. elf.h anyway, rather than actually
being able to work just as a drop-in subtree.  Hurd libpthread should
be arranged similarly to NPTL, so some files might go in a
hurd-pthreads (or similar) top-level directory in glibc, while sysdeps
files should go in the normal sysdeps directory structure (possibly in
hurd or hurd-pthreads subdirectories, just as there are nptl
subdirectories in the sysdeps tree).

Tested for x86_64, and with build-many-glibcs.py.

	* configure.ac (--enable-add-ons): Remove option.
	(machine): Do not mention add-ons in comment.
	(LIBC_PRECONFIGURE): Likewise.
	(add_ons): Remove variable and sanity checks and logic to locate
	add-ons.
	(add_ons_automatic): Remove variable.
	(configured_add_ons): Likewise.
	(add_ons_sfx): Likewise.
	(add_ons_pfx): Likewise.
	(add_on_subdirs): Likewise.
	(sysnames_add_ons): Likewise.  Remove loop over add-ons and
	consideration of add-ons in Implies handling.
	(sysdeps_add_ons): Likewise.
	* configure: Regenerated.
	* libidn/configure.ac: Remove.
	* libidn/configure: Likewise.
	* sysdeps/unix/inet/configure.ac: New file.
	* sysdeps/unix/inet/configure: New generated file.
	* sysdeps/unix/inet/Subdirs: Add libidn.
	* Makeconfig (sysdeps-srcdirs): Remove variable.
	(+sysdep_dirs): Do not include $(sysdeps-srcdirs).
	($(common-objpfx)config.status): Do not depend on add-on files.
	($(common-objpfx)shlib-versions.v.i): Do not mention add-ons in
	comment.
	(all-subdirs): Do not include $(add-on-subdirs).
	* Makefile (dist-prepare): Do not use $(sysdeps-add-ons).
	* config.make.in (add-ons): Remove variable.
	(add-on-subdirs): Likewise.
	(sysdeps-add-ons): Likewise.
	* manual/Makefile (add-chapters): Remove.
	($(objpfx)texis): Do not depend on $(add-chapters).
	(nonexamples): Do not handle $(add-chapters).
	(examples): Do not handle $(add-ons).
	(chapters.% top-menu.%): Do not pass '$(add-chapters)' to
	libc-texinfo.sh.
	* manual/install.texi (Installation): Do not mention add-ons.
	(--enable-add-ons): Do not document configure option.
	* INSTALL: Regenerated.
	* manual/libc-texinfo.sh: Do not handle $2 add-ons argument.
	* manual/maint.texi (Hierarchy Conventions): Do not mention
	add-ons.
	* scripts/build-many-glibcs.py (Glibc.build_glibc): Do not use
	--enable-add-ons.
	* scripts/gen-sorted.awk: Do not handle Subdirs files from
	add-ons.
	* scripts/test-installation.pl: Do not handle glibc-compat add-on.
	* sysdeps/nptl/Makeconfig: Do not mention add-ons in comment.
This commit is contained in:
Joseph Myers 2017-10-05 15:58:13 +00:00
parent 19f82f3586
commit 644d38570a
20 changed files with 137 additions and 649 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
ChangeLog
View File

@ -1,3 +1,53 @@
2017-10-05 Joseph Myers <joseph@codesourcery.com>
* configure.ac (--enable-add-ons): Remove option.
(machine): Do not mention add-ons in comment.
(LIBC_PRECONFIGURE): Likewise.
(add_ons): Remove variable and sanity checks and logic to locate
add-ons.
(add_ons_automatic): Remove variable.
(configured_add_ons): Likewise.
(add_ons_sfx): Likewise.
(add_ons_pfx): Likewise.
(add_on_subdirs): Likewise.
(sysnames_add_ons): Likewise. Remove loop over add-ons and
consideration of add-ons in Implies handling.
(sysdeps_add_ons): Likewise.
* configure: Regenerated.
* libidn/configure.ac: Remove.
* libidn/configure: Likewise.
* sysdeps/unix/inet/configure.ac: New file.
* sysdeps/unix/inet/configure: New generated file.
* sysdeps/unix/inet/Subdirs: Add libidn.
* Makeconfig (sysdeps-srcdirs): Remove variable.
(+sysdep_dirs): Do not include $(sysdeps-srcdirs).
($(common-objpfx)config.status): Do not depend on add-on files.
($(common-objpfx)shlib-versions.v.i): Do not mention add-ons in
comment.
(all-subdirs): Do not include $(add-on-subdirs).
* Makefile (dist-prepare): Do not use $(sysdeps-add-ons).
* config.make.in (add-ons): Remove variable.
(add-on-subdirs): Likewise.
(sysdeps-add-ons): Likewise.
* manual/Makefile (add-chapters): Remove.
($(objpfx)texis): Do not depend on $(add-chapters).
(nonexamples): Do not handle $(add-chapters).
(examples): Do not handle $(add-ons).
(chapters.% top-menu.%): Do not pass '$(add-chapters)' to
libc-texinfo.sh.
* manual/install.texi (Installation): Do not mention add-ons.
(--enable-add-ons): Do not document configure option.
* INSTALL: Regenerated.
* manual/libc-texinfo.sh: Do not handle $2 add-ons argument.
* manual/maint.texi (Hierarchy Conventions): Do not mention
add-ons.
* scripts/build-many-glibcs.py (Glibc.build_glibc): Do not use
--enable-add-ons.
* scripts/gen-sorted.awk: Do not handle Subdirs files from
add-ons.
* scripts/test-installation.pl: Do not handle glibc-compat add-on.
* sysdeps/nptl/Makeconfig: Do not mention add-ons in comment.
2017-10-05 Andreas Schwab <schwab@suse.de>
[BZ #15142]

17
INSTALL
View File

@ -5,11 +5,6 @@ Before you do anything else, you should read the FAQ at
<http://sourceware.org/glibc/wiki/FAQ>. It answers common questions and
describes problems you may experience with compilation and installation.
Features can be added to the GNU C Library via "add-on" bundles.
These are separate tar files, which you unpack into the top level of the
source tree. Then you give 'configure' the '--enable-add-ons' option to
activate them, and they will be compiled into the library.
You will need recent versions of several GNU tools: definitely GCC
and GNU Make, and possibly others. *Note Tools for Compilation::,
below.
@ -69,18 +64,6 @@ will be used, and CFLAGS sets optimization options for the compiler.
this option if you want to compile the GNU C Library with a newer
set of kernel headers than the ones found in '/usr/include'.
'--enable-add-ons[=LIST]'
Specify add-on packages to include in the build. If this option is
specified with no list, it enables all the add-on packages it finds
in the main source directory; this is the default behavior. You
may specify an explicit list of add-ons to use in LIST, separated
by spaces or commas (if you use spaces, remember to quote them from
the shell). Each add-on in LIST can be an absolute directory name
or can be a directory name relative to the main source directory,
or relative to the build directory (that is, the current working
directory). For example,
'--enable-add-ons=nptl,../glibc-libidn-VERSION'.
'--enable-kernel=VERSION'
This option is currently only useful on GNU/Linux systems. The
VERSION parameter should have the form X.Y.Z and describes the

27
Makeconfig
View File

@ -59,15 +59,7 @@ stack-align-test-flags =
# `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 <sysdeps/...> 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)
+sysdep_dirs = $(sysdirs)
ifdef objdir
+sysdep_dirs := $(objdir) $(+sysdep_dirs)
endif
@ -81,8 +73,8 @@ $(common-objpfx)config.make: $(common-objpfx)config.status \
$(..)config.make.in $(..)config.h.in
cd $(<D); $(SHELL) $(<F)
# Find all the add-on and sysdeps configure fragments, to make sure we
# re-run configure when any of them changes.
# Find all the sysdeps configure fragments, to make sure we re-run
# configure when any of them changes.
$(common-objpfx)config.status: $(..)version.h $(..)configure \
$(foreach dir,$(sysdirs),\
$(wildcard $(dir)/Implies) \
@ -90,14 +82,7 @@ $(common-objpfx)config.status: $(..)version.h $(..)configure \
$(firstword $(wildcard \
$(addprefix $(dir)/,configure configure.ac))))) \
$(patsubst %.ac,%,\
$(wildcard $(..)sysdeps/*/preconfigure $(..)sysdeps/*/preconfigure.ac)) \
$(patsubst %.ac,%,\
$(foreach add-on,$(add-ons),\
$(firstword $(wildcard \
$(addprefix $(firstword $(filter /%,$(add-on)) $(..)$(add-on))/,\
configure configure.ac))) \
$(wildcard $(addprefix $(firstword $(filter /%,$(add-on)) $(..)$(add-on))/,\
sysdeps/*/preconfigure sysdeps/*/preconfigure.ac))))
$(wildcard $(..)sysdeps/*/preconfigure $(..)sysdeps/*/preconfigure.ac))
@cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
echo The GNU C library has not been configured. >&2; \
echo Run \`configure\' to configure it before building. >&2; \
@ -1077,8 +1062,6 @@ endif
ifeq ($(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)) \
@ -1186,7 +1169,7 @@ all-subdirs = csu assert ctype locale intl catgets math setjmp signal \
grp pwd posix io termios resource misc socket sysvipc gmon \
gnulib iconv iconvdata wctype manual shadow gshadow po argp \
crypt localedata timezone rt conform debug mathvec support \
$(add-on-subdirs) dlfcn elf
dlfcn elf
ifndef avoid-generated
# sysd-sorted itself will contain rules making the sysd-sorted target

3
Makefile
View File

@ -351,8 +351,7 @@ files-for-dist := README INSTALL configure ChangeLog NEWS
# Regenerate stuff, then error if these things are not committed yet.
dist-prepare: $(files-for-dist)
conf=`find sysdeps $(addsuffix /sysdeps,$(sysdeps-add-ons)) \
-name configure`; \
conf=`find sysdeps -name configure`; \
$(MAKE) $$conf && \
git diff --stat HEAD -- $^ $$conf \
| $(AWK) '{ print; rc=1 } END { exit rc }'

4
NEWS
View File

@ -50,6 +50,10 @@ Deprecated and removed features, and other changes affecting compatibility:
platforms where it was previously the same, this changes the C++ name
mangling for interfaces involving this type.
* The add-ons mechanism for building additional packages at the same time as
glibc has been removed. The --enable-add-ons configure option is now
ignored.
Changes to build and runtime requirements:
[Add changes to build and runtime requirements here]

3
config.make.in
View File

@ -90,9 +90,6 @@ build-pic-default= @libc_cv_pic_default@
build-pie-default= @libc_cv_pie_default@
build-profile = @profile@
build-static-nss = @static_nss@
add-ons = @add_ons@
add-on-subdirs = @add_on_subdirs@
sysdeps-add-ons = @sysdeps_add_ons@
cross-compiling = @cross_compiling@
force-install = @force_install@
link-obsolete-rpc = @link_obsolete_rpc@

287
configure vendored
View File

@ -659,7 +659,6 @@ LN_S
INSTALL_DATA
INSTALL_SCRIPT
INSTALL_PROGRAM
sysdeps_add_ons
sysnames
submachine
multi_arch
@ -667,8 +666,6 @@ no_stack_protector
stack_protector
libc_cv_ssp
base_machine
add_on_subdirs
add_ons
have_tunables
build_pt_chown
build_nscd
@ -771,7 +768,6 @@ enable_timezone_tools
enable_hardcoded_path_in_tests
enable_stackguard_randomization
enable_lock_elision
enable_add_ons
enable_hidden_plt
enable_bind_now
enable_stack_protector
@ -806,8 +802,7 @@ CPP
CXX
CXXFLAGS
CCC'
ac_subdirs_all='
'
ac_subdirs_all=''
# Initialize some variables set by options.
ac_init_help=
@ -1434,9 +1429,6 @@ Optional Features:
number at program start
--enable-lock-elision=yes/no
Enable lock elision for pthread mutexes by default
--enable-add-ons[=DIRS...]
configure and build add-ons in DIR1,DIR2,... search
for add-ons if no parameter given
--disable-hidden-plt do not hide internal function calls to avoid PLT
--enable-bind-now disable lazy relocations in DSOs
--enable-stack-protector=[yes|no|all|strong]
@ -3415,14 +3407,6 @@ if test "$enable_lock_elision" = yes ; then
fi
# Check whether --enable-add-ons was given.
if test "${enable_add_ons+set}" = set; then :
enableval=$enable_add_ons;
else
enable_add_ons=yes
fi
# Check whether --enable-hidden-plt was given.
if test "${enable_hidden_plt+set}" = set; then :
enableval=$enable_hidden_plt; hidden=$enableval
@ -3785,7 +3769,7 @@ config_os="`echo $config_os | sed 's/^unknown-//'`"
# Some configurations imply other options.
elf=yes
# The configure fragment of an add-on port can modify these to supplement
# The configure fragment of a port can modify these to supplement
# or override the table in the case statement below. No fragment should
# ever change the config_* variables, however.
machine=$config_machine
@ -3823,143 +3807,6 @@ $as_echo_n "checking for sysdeps preconfigure fragments... " >&6; }
$as_echo "" >&6; }
fi
subdirs="$subdirs "
case "$enable_add_ons" in
''|no) add_ons= ;;
yes|'*')
add_ons=`cd $srcdir && ls -d 2> /dev/null */configure */sysdeps |
sed 's@/[^/]*$@@' | sort | uniq`
add_ons_automatic=yes
;;
*) add_ons=`echo "$enable_add_ons" | sed 's/,/ /g'`
add_ons_automatic=no ;;
esac
configured_add_ons=
add_ons_sfx=
add_ons_pfx=
if test x"$add_ons" != x; then
for f in $add_ons; do
# Some sanity checks
case "$f" in
crypt)
as_fn_error $? "
*** It seems that you're using an old \`crypt' add-on. crypt is now
*** part of glibc and using the old add-on will not work with this
*** release. Start again with fresh sources and without the old
*** \`crypt' add-on." "$LINENO" 5
;;
localedata)
as_fn_error $? "
*** It seems that you're using an old \`localedata' add-on. localedata
*** is now part of glibc and using the old add-on will not work with
*** this release. Start again with fresh sources and without the old
*** \`localedata' add-on." "$LINENO" 5
;;
esac
done
# Now source each add-on's configure fragment.
# The fragments can use $srcdir/$libc_add_on to find themselves,
# and test $add_ons_automatic to see if they were explicitly requested.
# A fragment can clear (or even change) $libc_add_on to affect
# whether it goes into the list to be actually used in the build.
use_add_ons=
for libc_add_on in $add_ons; do
# Test whether such a directory really exists.
# It can be absolute, or relative to $srcdir, or relative to the build dir.
case "$libc_add_on" in
/*)
libc_add_on_srcdir=$libc_add_on
;;
*)
test -d "$srcdir/$libc_add_on" || {
if test -d "$libc_add_on"; then
libc_add_on="`pwd`/$libc_add_on"
else
as_fn_error $? "add-on directory \"$libc_add_on\" does not exist" "$LINENO" 5
fi
}
libc_add_on_srcdir=$srcdir/$libc_add_on
;;
esac
libc_add_on_frag=$libc_add_on_srcdir/configure
libc_add_on_canonical=
libc_add_on_config_subdirs=
if test -r "$libc_add_on_frag"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: running configure fragment for add-on $libc_add_on" >&5
$as_echo "$as_me: running configure fragment for add-on $libc_add_on" >&6;}
libc_add_on_canonical=unknown
libc_add_on_subdirs=
. "$libc_add_on_frag"
test -z "$libc_add_on" || {
configured_add_ons="$configured_add_ons $libc_add_on"
if test "x$libc_add_on_canonical" = xunknown; then
as_fn_error $? "fragment must set \$libc_add_on_canonical" "$LINENO" 5
fi
for d in $libc_add_on_subdirs; do
case "$libc_add_on" in
/*) subdir_srcdir="$libc_add_on" ;;
*) subdir_srcdir="\$(..)$libc_add_on" ;;
esac
case "$d" in
.)
d="${libc_add_on_canonical:-$libc_add_on}"
;;
/*)
subdir_srcdir="$d"
;;
*)
subdir_srcdir="$subdir_srcdir/$d"
;;
esac
d=`echo "$d" | sed 's@/*$@@;s@^.*/@@'`
add_on_subdirs="$add_on_subdirs $d"
test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars
$d-srcdir = $subdir_srcdir"
done
for d in $libc_add_on_config_subdirs; do
case "$d" in
/*) as_fn_error $? "fragment uses absolute path in \$libc_add_on_config_subdirs" "$LINENO" 5 ;;
esac
if test ! -d "$libc_add_on_srcdir/$d"; then
as_fn_error $? "fragment wants to configure missing directory $d" "$LINENO" 5
fi
case "$libc_add_on" in
/*) as_fn_error $? "relative path required for add-on using \$libc_add_on_config_subdirs" "$LINENO" 5 ;;
esac
subdirs="$subdirs $libc_add_on/$d"
done
}
fi
if test -n "$libc_add_on"; then
if frags=`ls -d $libc_add_on_srcdir/sysdeps/*/preconfigure 2> /dev/null`
then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking add-on $libc_add_on for preconfigure fragments" >&5
$as_echo_n "checking add-on $libc_add_on for preconfigure fragments... " >&6; }
for frag in $frags; do
name=`echo "$frag" | sed 's@/[^/]*$@@;s@^.*/@@'`
echo $ECHO_N "$name $ECHO_C" >&6
. "$frag"
done
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: " >&5
$as_echo "" >&6; }
fi
use_add_ons="$use_add_ons $libc_add_on"
add_ons_pfx="$add_ons_pfx $libc_add_on/"
test -z "$libc_add_on_canonical" ||
add_ons_sfx="$add_ons_sfx /$libc_add_on_canonical"
fi
done
# Use echo to strip excess whitespace.
add_ons="`echo $use_add_ons`"
fi
###
### By using the undocumented --enable-hacker-mode option for configure
@ -4231,7 +4078,6 @@ done
# Find what sysdep directories exist.
sysnames_add_ons=
sysnames=
for b in $base ''; do
for m0 in $mach ''; do
@ -4240,34 +4086,21 @@ for b in $base ''; do
for o in /$ostry ''; do
test "$o" = / && continue
for m in $mach ''; do
for d in $add_ons_pfx ''; do
for a in $add_ons_sfx ''; do
try_suffix="$m0$b$v$o$m"
if test -n "$try_suffix"; then
try_srcdir="${srcdir}/"
case "$d" in
/*) try_srcdir= ;;
esac
try="${d}sysdeps$try_suffix$a"
test -n "$enable_debug_configure" &&
echo "$0 DEBUG: try $try" >&2
if test -d "$try_srcdir$try"; then
sysnames="$sysnames $try"
{ test -n "$o" || test -n "$b"; } && os_used=t
{ test -n "$m" || test -n "$m0"; } && machine_used=t
case x${m0:-$m} in
x*/$submachine) submachine_used=t ;;
esac
if test -n "$d"; then
case "$sysnames_add_ons" in
*" $d "*) ;;
*|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
esac
fi
fi
fi
done
done
try_suffix="$m0$b$v$o$m"
if test -n "$try_suffix"; then
try_srcdir="${srcdir}/"
try="sysdeps$try_suffix"
test -n "$enable_debug_configure" &&
echo "$0 DEBUG: try $try" >&2
if test -d "$try_srcdir$try"; then
sysnames="$sysnames $try"
{ test -n "$o" || test -n "$b"; } && os_used=t
{ test -n "$m" || test -n "$m0"; } && machine_used=t
case x${m0:-$m} in
x*/$submachine) submachine_used=t ;;
esac
fi
fi
done
done
done
@ -4276,7 +4109,7 @@ done
# If the assembler supports gnu_indirect_function symbol type and the
# architecture supports multi-arch, we enable multi-arch by default.
case $sysnames_add_ons$sysnames in
case $sysnames in
*"$multi_arch_d"*)
;;
*)
@ -4339,24 +4172,15 @@ while test $# -gt 0; do
eval "${implies_type}=\"\$${implies_type} \$name_base/\$x\""
found=yes
fi
for d in $add_ons_pfx ''; do
try="${d}sysdeps/$x"
case $d in
/*) try_srcdir= ;;
*) try_srcdir=$srcdir/ ;;
esac
test -n "$enable_debug_configure" &&
echo "DEBUG: $name $implies_file $x try($d) {$try_srcdir}$try" >&2
if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
then
eval "${implies_type}=\"\$${implies_type} \$try\""
found=yes
case "$sysnames_add_ons" in
*" $d "*) ;;
*|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
esac
fi
done
try="sysdeps/$x"
try_srcdir=$srcdir/
test -n "$enable_debug_configure" &&
echo "DEBUG: $name $implies_file $x try() {$try_srcdir}$try" >&2
if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
then
eval "${implies_type}=\"\$${implies_type} \$try\""
found=yes
fi
if test $found = no; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $name/$implies_file specifies nonexistent $x" >&5
$as_echo "$as_me: WARNING: $name/$implies_file specifies nonexistent $x" >&2;}
@ -4394,63 +4218,6 @@ sysnames="$names $default_sysnames"
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $default_sysnames" >&5
$as_echo "$default_sysnames" >&6; }
# Collect the list of add-ons that supply partial sysdeps trees.
sysdeps_add_ons=
for add_on in $add_ons; do
case "$add_on" in
/*) xsrcdir= ;;
*) xsrcdir="$srcdir/" ;;
esac
test -d "$xsrcdir$add_on/sysdeps" || {
case "$configured_add_ons " in
*" $add_on "*) ;;
*|'')
as_fn_error $? "add-on $add_on has no configure fragment or sysdeps tree" "$LINENO" 5
;;
esac
continue
}
sysdeps_add_ons="$sysdeps_add_ons $add_on"
case "$sysnames_add_ons" in
*" $add_on/ "*) ;;
*|'')
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: add-on $add_on contributed no sysdeps directories" >&5
$as_echo "$as_me: WARNING: add-on $add_on contributed no sysdeps directories" >&2;}
continue ;;
esac
found=no
for d in $sysnames; do
case "$d" in
$add_on/sysdeps/*) ;;
*) continue ;;
esac
(cd "$xsrcdir$d" && for f in *[!~]; do
case "$f" in
sys|bits)
for ff in $f/*.h; do
test -d "$ff" || { test -e "$ff" && exit 88; }
done
;;
*)
test -d "$f" || { test -e "$f" && exit 88; }
;;
esac
done)
if test $? -eq 88; then
found=yes
break
fi
done
if test $found = no; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: add-on $add_on contributed no useful sysdeps directories" >&5
$as_echo "$as_me: WARNING: add-on $add_on contributed no useful sysdeps directories" >&2;}
fi
done
### Locate tools.

268
configure.ac
View File

@ -209,13 +209,6 @@ if test "$enable_lock_elision" = yes ; then
AC_DEFINE(ENABLE_LOCK_ELISION)
fi
dnl Generic infrastructure for drop-in additions to libc.
AC_ARG_ENABLE([add-ons],
AC_HELP_STRING([--enable-add-ons@<:@=DIRS...@:>@],
[configure and build add-ons in DIR1,DIR2,...
search for add-ons if no parameter given]),
, [enable_add_ons=yes])
AC_ARG_ENABLE([hidden-plt],
AC_HELP_STRING([--disable-hidden-plt],
[do not hide internal function calls to avoid PLT]),
@ -483,7 +476,7 @@ config_os="`echo $config_os | sed 's/^unknown-//'`"
# Some configurations imply other options.
elf=yes
# The configure fragment of an add-on port can modify these to supplement
# The configure fragment of a port can modify these to supplement
# or override the table in the case statement below. No fragment should
# ever change the config_* variables, however.
machine=$config_machine
@ -506,138 +499,9 @@ AC_ARG_WITH([cpu],
# check below.
libc_config_ok=no
dnl Let sysdeps/*/preconfigure act here, like they can in add-ons.
dnl Let sysdeps/*/preconfigure act here.
LIBC_PRECONFIGURE([$srcdir], [for sysdeps])
dnl Having this here, though empty, makes sure that if add-ons' fragments
dnl do AC_CONFIG_SUBDIRS([some-dir]), which just sets $subdirs, then
dnl our AC_OUTPUT will actually use it.
AC_CONFIG_SUBDIRS()
case "$enable_add_ons" in
''|no) add_ons= ;;
yes|'*')
add_ons=`cd $srcdir && ls -d 2> /dev/null */configure */sysdeps |
sed 's@/[[^/]]*$@@' | sort | uniq`
add_ons_automatic=yes
;;
*) add_ons=`echo "$enable_add_ons" | sed 's/,/ /g'`
add_ons_automatic=no ;;
esac
configured_add_ons=
add_ons_sfx=
add_ons_pfx=
if test x"$add_ons" != x; then
for f in $add_ons; do
# Some sanity checks
case "$f" in
crypt)
AC_MSG_ERROR([
*** It seems that you're using an old \`crypt' add-on. crypt is now
*** part of glibc and using the old add-on will not work with this
*** release. Start again with fresh sources and without the old
*** \`crypt' add-on.])
;;
localedata)
AC_MSG_ERROR([
*** It seems that you're using an old \`localedata' add-on. localedata
*** is now part of glibc and using the old add-on will not work with
*** this release. Start again with fresh sources and without the old
*** \`localedata' add-on.])
;;
esac
done
# Now source each add-on's configure fragment.
# The fragments can use $srcdir/$libc_add_on to find themselves,
# and test $add_ons_automatic to see if they were explicitly requested.
# A fragment can clear (or even change) $libc_add_on to affect
# whether it goes into the list to be actually used in the build.
use_add_ons=
for libc_add_on in $add_ons; do
# Test whether such a directory really exists.
# It can be absolute, or relative to $srcdir, or relative to the build dir.
case "$libc_add_on" in
/*)
libc_add_on_srcdir=$libc_add_on
;;
*)
test -d "$srcdir/$libc_add_on" || {
if test -d "$libc_add_on"; then
libc_add_on="`pwd`/$libc_add_on"
else
AC_MSG_ERROR(add-on directory \"$libc_add_on\" does not exist)
fi
}
libc_add_on_srcdir=$srcdir/$libc_add_on
;;
esac
libc_add_on_frag=$libc_add_on_srcdir/configure
libc_add_on_canonical=
libc_add_on_config_subdirs=
if test -r "$libc_add_on_frag"; then
AC_MSG_NOTICE(running configure fragment for add-on $libc_add_on)
libc_add_on_canonical=unknown
libc_add_on_subdirs=
. "$libc_add_on_frag"
test -z "$libc_add_on" || {
configured_add_ons="$configured_add_ons $libc_add_on"
if test "x$libc_add_on_canonical" = xunknown; then
AC_MSG_ERROR(fragment must set \$libc_add_on_canonical)
fi
for d in $libc_add_on_subdirs; do
case "$libc_add_on" in
/*) subdir_srcdir="$libc_add_on" ;;
*) subdir_srcdir="\$(..)$libc_add_on" ;;
esac
case "$d" in
.)
d="${libc_add_on_canonical:-$libc_add_on}"
;;
/*)
subdir_srcdir="$d"
;;
*)
subdir_srcdir="$subdir_srcdir/$d"
;;
esac
d=`echo "$d" | sed 's@/*$@@;s@^.*/@@'`
add_on_subdirs="$add_on_subdirs $d"
test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars
$d-srcdir = $subdir_srcdir"
done
for d in $libc_add_on_config_subdirs; do
case "$d" in
/*) AC_MSG_ERROR(dnl
fragment uses absolute path in \$libc_add_on_config_subdirs) ;;
esac
if test ! -d "$libc_add_on_srcdir/$d"; then
AC_MSG_ERROR(fragment wants to configure missing directory $d)
fi
case "$libc_add_on" in
/*) AC_MSG_ERROR(dnl
relative path required for add-on using \$libc_add_on_config_subdirs) ;;
esac
subdirs="$subdirs $libc_add_on/$d"
done
}
fi
if test -n "$libc_add_on"; then
LIBC_PRECONFIGURE([$libc_add_on_srcdir], [add-on $libc_add_on for])
use_add_ons="$use_add_ons $libc_add_on"
add_ons_pfx="$add_ons_pfx $libc_add_on/"
test -z "$libc_add_on_canonical" ||
add_ons_sfx="$add_ons_sfx /$libc_add_on_canonical"
fi
done
# Use echo to strip excess whitespace.
add_ons="`echo $use_add_ons`"
fi
AC_SUBST(add_ons)
AC_SUBST(add_on_subdirs)
###
### By using the undocumented --enable-hacker-mode option for configure
@ -853,7 +717,6 @@ dnl We are done with glob and regexp uses of [ and ]; return to autoconf.
changequote([,])dnl
# Find what sysdep directories exist.
sysnames_add_ons=
sysnames=
for b in $base ''; do
for m0 in $mach ''; do
@ -862,34 +725,21 @@ for b in $base ''; do
for o in /$ostry ''; do
test "$o" = / && continue
for m in $mach ''; do
for d in $add_ons_pfx ''; do
for a in $add_ons_sfx ''; do
try_suffix="$m0$b$v$o$m"
if test -n "$try_suffix"; then
try_srcdir="${srcdir}/"
case "$d" in
/*) try_srcdir= ;;
esac
try="${d}sysdeps$try_suffix$a"
test -n "$enable_debug_configure" &&
echo "$0 [DEBUG]: try $try" >&2
if test -d "$try_srcdir$try"; then
sysnames="$sysnames $try"
{ test -n "$o" || test -n "$b"; } && os_used=t
{ test -n "$m" || test -n "$m0"; } && machine_used=t
case x${m0:-$m} in
x*/$submachine) submachine_used=t ;;
esac
if test -n "$d"; then
case "$sysnames_add_ons" in
*" $d "*) ;;
*|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
esac
fi
fi
fi
done
done
try_suffix="$m0$b$v$o$m"
if test -n "$try_suffix"; then
try_srcdir="${srcdir}/"
try="sysdeps$try_suffix"
test -n "$enable_debug_configure" &&
echo "$0 [DEBUG]: try $try" >&2
if test -d "$try_srcdir$try"; then
sysnames="$sysnames $try"
{ test -n "$o" || test -n "$b"; } && os_used=t
{ test -n "$m" || test -n "$m0"; } && machine_used=t
case x${m0:-$m} in
x*/$submachine) submachine_used=t ;;
esac
fi
fi
done
done
done
@ -898,7 +748,7 @@ done
# If the assembler supports gnu_indirect_function symbol type and the
# architecture supports multi-arch, we enable multi-arch by default.
case $sysnames_add_ons$sysnames in
case $sysnames in
*"$multi_arch_d"*)
;;
*)
@ -960,24 +810,15 @@ while test $# -gt 0; do
eval "${implies_type}=\"\$${implies_type} \$name_base/\$x\""
found=yes
fi
for d in $add_ons_pfx ''; do
try="${d}sysdeps/$x"
case $d in
/*) try_srcdir= ;;
*) try_srcdir=$srcdir/ ;;
esac
test -n "$enable_debug_configure" &&
echo "[DEBUG]: $name $implies_file $x try($d) {$try_srcdir}$try" >&2
if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
then
eval "${implies_type}=\"\$${implies_type} \$try\""
found=yes
case "$sysnames_add_ons" in
*" $d "*) ;;
*|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
esac
fi
done
try="sysdeps/$x"
try_srcdir=$srcdir/
test -n "$enable_debug_configure" &&
echo "[DEBUG]: $name $implies_file $x try() {$try_srcdir}$try" >&2
if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
then
eval "${implies_type}=\"\$${implies_type} \$try\""
found=yes
fi
if test $found = no; then
AC_MSG_WARN($name/$implies_file specifies nonexistent $x)
fi
@ -1015,61 +856,6 @@ AC_SUBST(sysnames)
# The other names were emitted during the scan.
AC_MSG_RESULT($default_sysnames)
# Collect the list of add-ons that supply partial sysdeps trees.
sysdeps_add_ons=
for add_on in $add_ons; do
case "$add_on" in
/*) xsrcdir= ;;
*) xsrcdir="$srcdir/" ;;
esac
test -d "$xsrcdir$add_on/sysdeps" || {
case "$configured_add_ons " in
*" $add_on "*) ;;
*|'')
AC_MSG_ERROR(add-on $add_on has no configure fragment or sysdeps tree)
;;
esac
continue
}
sysdeps_add_ons="$sysdeps_add_ons $add_on"
case "$sysnames_add_ons" in
*" $add_on/ "*) ;;
*|'')
AC_MSG_WARN(add-on $add_on contributed no sysdeps directories)
continue ;;
esac
found=no
for d in $sysnames; do
case "$d" in
$add_on/sysdeps/*) ;;
*) continue ;;
esac
(cd "$xsrcdir$d" && for f in *[[!~]]; do
case "$f" in
sys|bits)
for ff in $f/*.h; do
test -d "$ff" || { test -e "$ff" && exit 88; }
done
;;
*)
test -d "$f" || { test -e "$f" && exit 88; }
;;
esac
done)
if test $? -eq 88; then
found=yes
break
fi
done
if test $found = no; then
AC_MSG_WARN(add-on $add_on contributed no useful sysdeps directories)
fi
done
AC_SUBST(sysdeps_add_ons)
### Locate tools.

16
libidn/configure vendored
View File

@ -1,16 +0,0 @@
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
libc_add_on_canonical=
if test "$shared" = yes; then :
libc_add_on_subdirs=.
# Get this defined in config.h for main source code to test.
$as_echo "#define HAVE_LIBIDN 1" >>confdefs.h
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: libidn add-on ignored with --disable-shared" >&5
$as_echo "$as_me: WARNING: libidn add-on ignored with --disable-shared" >&2;}
fi

9
manual/Makefile
View File

@ -40,20 +40,18 @@ chapters = $(addsuffix .texi, \
resource setjmp signal startup process ipc job \
nss users sysinfo conf crypt debug threads \
probes tunables)
add-chapters = $(wildcard $(foreach d, $(add-ons), ../$d/$d.texi))
appendices = lang.texi header.texi install.texi maint.texi platform.texi \
contrib.texi
licenses = freemanuals.texi lgpl-2.1.texi fdl-1.3.texi
-include $(objpfx)texis
$(objpfx)texis: texis.awk $(chapters) $(add-chapters) $(appendices) $(licenses)
$(objpfx)texis: texis.awk $(chapters) $(appendices) $(licenses)
$(make-target-directory)
$(AWK) -f $^ > $@.T
mv -f $@.T $@
nonexamples = $(filter-out $(add-chapters) %.c.texi, $(texis))
examples = $(filter-out $(foreach d, $(add-ons), ../$d/%.c.texi), \
$(filter %.c.texi, $(texis)))
nonexamples = $(filter-out %.c.texi, $(texis))
examples = $(filter %.c.texi, $(texis))
# Generated files directly included from libc.texinfo.
libc-texi-generated = chapters.texi top-menu.texi dir-add.texi \
@ -69,7 +67,6 @@ texis-path := $(filter-out $(libc-texi-generated) summary.texi $(examples), \
chapters.% top-menu.%: libc-texinfo.sh $(texis-path) Makefile
AWK=$(AWK) $(SHELL) $< $(objpfx) \
'$(chapters)' \
'$(add-chapters)' \
'$(appendices) $(licenses)'

16
manual/install.texi
View File

@ -13,11 +13,6 @@ Before you do anything else, you should read the FAQ at
questions and describes problems you may experience with compilation
and installation.
Features can be added to @theglibc{} via @dfn{add-on} bundles. These are
separate tar files, which you unpack into the top level of the source
tree. Then you give @code{configure} the @samp{--enable-add-ons} option
to activate them, and they will be compiled into the library.
You will need recent versions of several GNU tools: definitely GCC and
GNU Make, and possibly others. @xref{Tools for Compilation}, below.
@ -95,17 +90,6 @@ occasionally happen in this case. You can also use this option if you want to
compile @theglibc{} with a newer set of kernel headers than the ones found in
@file{/usr/include}.
@item --enable-add-ons[=@var{list}]
Specify add-on packages to include in the build. If this option is
specified with no list, it enables all the add-on packages it finds in
the main source directory; this is the default behavior. You may
specify an explicit list of add-ons to use in @var{list}, separated by
spaces or commas (if you use spaces, remember to quote them from the
shell). Each add-on in @var{list} can be an absolute directory name
or can be a directory name relative to the main source directory, or
relative to the build directory (that is, the current working directory).
For example, @samp{--enable-add-ons=nptl,../glibc-libidn-@var{version}}.
@item --enable-kernel=@var{version}
This option is currently only useful on @gnulinuxsystems{}. The
@var{version} parameter should have the form X.Y.Z and describes the

17
manual/libc-texinfo.sh
View File

@ -31,26 +31,11 @@ collect_nodes () {
$AWK -f tsort.awk | sed 's/_/ /g'
}
# Emit "@set ADD-ON" for each add-on contributing a manual chapter.
for addon in $2; do
addon=`basename $addon .texi`
echo >&3 "@set $addon"
done
collect_nodes $1 | build_menu
if [ -n "$2" ]; then
{ echo; echo 'Add-ons'; echo; } >&4
egrep '^(@c )?@node.*Top' `echo $2 /dev/null | tr ' ' '\n' | sort` |
cut -d, -f1 | sed 's/@c //;s/@node //' | build_menu
fi
{ echo; echo 'Appendices'; echo; } >&4
collect_nodes $3 | build_menu
collect_nodes $2 | build_menu
exec 3>&- 4>&- 5>&-

11
manual/maint.texi
View File

@ -381,19 +381,10 @@ identical @file{irix6.2} and @file{irix6.3} directories,
by removing trailing suffixes starting with a period.
As an example, here is the complete list of directories that would be
tried for the configuration @w{@samp{i686-linux-gnu}} (with the
@file{crypt} and @file{linuxthreads} add-on):
tried for the configuration @w{@samp{i686-linux-gnu}}:
@smallexample
sysdeps/i386/elf
crypt/sysdeps/unix
linuxthreads/sysdeps/unix/sysv/linux
linuxthreads/sysdeps/pthread
linuxthreads/sysdeps/unix/sysv
linuxthreads/sysdeps/unix
linuxthreads/sysdeps/i386/i686
linuxthreads/sysdeps/i386
linuxthreads/sysdeps/pthread/no-cmpxchg
sysdeps/unix/sysv/linux/i386
sysdeps/unix/sysv/linux
sysdeps/gnu

1
scripts/build-many-glibcs.py
View File

@ -1342,7 +1342,6 @@ class Glibc(object):
cmdlist.create_copy_dir(srcdir, srcdir_copy)
cfg_cmd = [os.path.join(srcdir_copy, 'configure'),
'--prefix=/usr',
'--enable-add-ons',
'--enable-profile',
'--build=%s' % self.ctx.build_triplet,
'--host=%s' % self.triplet,

34
scripts/gen-sorted.awk
View File

@ -46,36 +46,10 @@ type == "Subdirs" && NF == 2 && $1 == "inhibit" {
type == "Subdirs" && thisdir {
all[cnt++] = thisdir;
if (FILENAME ~ (srcpfx ? /^\.\.\/sysdeps\// : /^sysdeps\//) \
|| system("test -d " srcpfx thisdir) == 0) {
# This Subdirs file is in the main source tree,
# or this subdirectory exists in the main source tree.
this_srcdir = srcpfx thisdir
}
else {
# The Subdirs file comes from an add-on that should have the subdirectory.
dir = FILENAME;
do
sub(/\/[^/]+$/, "", dir);
while (dir !~ /\/sysdeps$/);
sub(/\/sysdeps$/, "", dir);
if (system("test -d " dir "/" thisdir) == 0)
dir = dir "/" thisdir;
else {
sub(/\/[^/]+$/, "", dir);
if (system("test -d " dir "/" thisdir) == 0)
dir = dir "/" thisdir;
else {
print FILENAME ":" FNR ":", "cannot find", thisdir > "/dev/stderr";
exit 2
}
}
file = dir "/Depend";
if (srcpfx)
sub(/^\.\.\//, "", dir);
if (dir !~ /^\/.*$/)
dir = "$(..)" dir;
print thisdir "-srcdir", ":=", dir;
this_srcdir = srcpfx thisdir
if (system("test -d " this_srcdir) != 0) {
print FILENAME ":" FNR ":", "cannot find", this_srcdir > "/dev/stderr";
exit 2
}
file = this_srcdir "/Depend";
if (system("test -f " file) == 0) {

3
scripts/test-installation.pl
View File

@ -116,14 +116,13 @@ while (<SOVERSIONS>) {
# Filter out some libraries we don't want to link:
# - nss_ldap since it's not yet available
# - libdb1 since it conflicts with libdb
# - libnss1_* from glibc-compat add-on
# - libthread_db since it contains unresolved references
# - it's just a test NSS module
# - We don't provide the libgcc so we don't test it
# - libmvec if it wasn't built
next if ($build_mathvec == 0 && $name eq "mvec");
if ($name ne "nss_ldap" && $name ne "db1"
&& !($name =~/^nss1_/) && $name ne "thread_db"
&& $name ne "thread_db"
&& $name ne "nss_test1" && $name ne "libgcc_s") {
$link_libs .= " -l$name";
$versions{$name} = $version;

2
sysdeps/nptl/Makeconfig
View File

@ -16,7 +16,7 @@
# License along with the GNU C Library; if not, see
# <http://www.gnu.org/licenses/>.
# Makeconfig fragment for NPTL add-on.
# Makeconfig fragment for NPTL.
# This gets included at the end of the main glibc Makeconfig.
have-thread-library = yes

1
sysdeps/unix/inet/Subdirs
View File

@ -6,3 +6,4 @@ nis
nscd
nss
streams
libidn

9
sysdeps/unix/inet/configure vendored Normal file
View File

@ -0,0 +1,9 @@
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
if test "$shared" = yes; then :
# Get this defined in config.h for main source code to test.
$as_echo "#define HAVE_LIBIDN 1" >>confdefs.h
fi

8
libidn/configure.ac → sysdeps/unix/inet/configure.ac
View File

@ -1,11 +1,7 @@
dnl glibc configure fragment for libidn add-on
dnl glibc configure fragment for sysdeps/unix/inet.
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
libc_add_on_canonical=
AS_IF([test "$shared" = yes], [
libc_add_on_subdirs=.
# Get this defined in config.h for main source code to test.
AC_DEFINE([HAVE_LIBIDN])
], [AC_MSG_WARN([libidn add-on ignored with --disable-shared])])
])