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the example list of sysdeps directories is still very out of date).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.
2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
1999-12-01 Andreas Jaeger <aj@suse.de>
* sysdeps/generic/if_index.c (__protocol_available): Add missing
int for parameter.
* stdio/stdio.h: Fix typo.
Patches by Marcus G. Daniels <mgd@santafe.edu>.
1999-12-01 Andreas Jaeger <aj@suse.de>
* scripts/test-installation.pl (installation_problem): Filter out
libpthread_db.
1999-12-01 Andreas Schwab <schwab@suse.de>
* sysdeps/unix/sysv/linux/alpha/bits/types.h: Fix signedness of
__rlim_t and __rlim64_t.
* sysdeps/unix/sysv/linux/mips/bits/types.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/types.h: Likewise.
1999-12-01 Andreas Schwab <schwab@suse.de>
* sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Add
oldgetrlimit64 and oldsetrlimit64 for subdir = resource.
* sysdeps/unix/sysv/linux/Versions: Add getrlimit, setrlimit,
getrlimit64 and setrlimit64 to version GLIBC_2.1.3.
* sysdeps/unix/sysv/linux/setrlimit.c: Correct handling of old and
new kernel version. Add symbol versions.
* sysdeps/unix/sysv/linux/syscalls.list: Add oldsetrlimit and
oldgetrlimit.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/powerpc/syscalls.list: Add s_getrlimit
and s_ugetrlimit.
* sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/getrlimit.c: New file.
* sysdeps/unix/sysv/linux/getrlimit64.c: New file.
* sysdeps/unix/sysv/linux/oldgetrlimit64.c: New file.
* sysdeps/unix/sysv/linux/oldsetrlimit64.c: New file.
* sysdeps/unix/sysv/linux/setrlimit64.c: New file.
* sysdeps/unix/sysv/linux/alpha/oldgetrlimit64.c: New file.
* sysdeps/unix/sysv/linux/alpha/oldsetrlimit64.c: New file.
* sysdeps/unix/sysv/linux/sparc/sparc64/oldgetrlimit64.c: New
file.
* sysdeps/unix/sysv/linux/sparc/sparc64/oldsetrlimit64.c: New
file.
1998-09-23 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* scripts/test-installation.pl (installation_problem): Don't link
the test program against libdb1.
1998-07-01 09:32 Ulrich Drepper <drepper@cygnus.com>
* math/libm-test.c: Adjust delta for indentities1_test because gcc
became cleverer.
1998-06-29 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* resolv/inet_addr.c (inet_aton): Define variable base only if needed.
1998-06-30 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* scripts/test-installation.pl: Include <stdio.h> in test program
to make it strictly conforming.
1998-06-30 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/m68k/sysdep.S: Make _errno a weak alias,
not a strong alias.
* sysdeps/unix/sysv/linux/i386/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/arm/sysdep.S: Likewise.
