+2011-05-02 Eric Blake <eblake@redhat.com>
+
+ fflush: also replace fclose when fixing fflush
+ * modules/fflush (Depends-on): Add fclose.
+ * m4/fflush.m4 (gl_FUNC_FFLUSH): Also replace fclose.
+ * lib/fclose.c (rpl_fclose): Don't cause spurious failures on
+ memstreams with no backing fd.
+ * doc/posix-functions/fclose.texi (fclose): Document the use of
+ fflush module to fix the bug.
+ * tests/test-fclose.c (main): Relax test when fclose is used in
+ isolation.
+
+ fclose: add some tests
+ * modules/fclose-tests: New test module.
+ * tests/test-fclose.c: New file.
+ * doc/posix-functions/fclose.texi (fclose): Document the bug.
+
+ fclose: reduced dependencies
+ * modules/fclose (Depends-on): Switch from fflush/fseeko to
+ simpler lseek.
+ * lib/fclose.c (rpl_fclose): Likewise.
+ Reported by Simon Josefsson.
+
+ exit: drop remaining clients
+ * modules/argmatch (Depends-on): Replace exit with stdlib.
+ * modules/copy-file (Depends-on): Likewise.
+ * modules/execute (Depends-on): Likewise.
+ * modules/exitfail (Depends-on): Likewise.
+ * modules/obstack (Depends-on): Likewise.
+ * modules/pagealign_alloc (Depends-on): Likewise.
+ * modules/pipe-filter-gi (Depends-on): Likewise.
+ * modules/pipe-filter-ii (Depends-on): Likewise.
+ * modules/savewd (Depends-on): Likewise.
+ * modules/spawn-pipe (Depends-on): Likewise.
+ * modules/wait-process (Depends-on): Likewise.
+ * modules/xsetenv (Depends-on): Likewise.
+ * modules/chdir-long (Depends-on): Add stdlib, for EXIT_FAILURE.
+ * modules/git-merge-changelog (Depends-on): Likewise.
+ * modules/long-options (Depends-on): Likewise.
+ * modules/pt_chown (Depends-on): Likewise.
+ * modules/sysexits (Depends-on): Likewise.
+
+ freading: relax license from LGPLv3+ to LGPLv2+
+ * modules/freading (License): Relax LGPL version.
+
+2011-05-02 Bruno Haible <bruno@clisp.org>
+
+ fchdir: Remove unused dependencies.
+ * modules/fchdir (Depends-on): Remove include_next.
+
+2011-05-02 Bruno Haible <bruno@clisp.org>
+
+ gnulib-tool: Refactor.
+ * gnulib-tool (func_emit_autoconf_snippet): New function, extracted
+ from func_emit_autoconf_snippets.
+ (func_emit_autoconf_snippets): Use it.
+
+2011-05-02 Simon Josefsson <simon@josefsson.org>
+
+ * NEWS: Document removal of 'exit'.
+ * modules/exit: Remove file.
+
+2011-05-01 Bruno Haible <bruno@clisp.org>
+
+ Update DEPENDENCIES.
+ * DEPENDENCIES (gettext): Recommend the newest release.
+ Reported by Simon Josefsson.
+
+2011-05-01 Bruno Haible <bruno@clisp.org>
+
+ gnulib-tool: Reduce code duplication.
+ * gnulib-tool (func_emit_autoconf_snippets): New function.
+ (func_import, func_create_testdir): Use it.
+
+2011-04-30 Eric Blake <eblake@redhat.com>
+
+ fclose: don't fail on non-seekable input stream
+ * modules/fclose (Depends-on): Add freading, fflush, fseeko.
+ * lib/fclose.c (rpl_fclose): Skip fflush for non-seekable input,
+ since fflush is allowed to fail in that case.
+
+2011-04-30 Bruno Haible <bruno@clisp.org>
+
+ dup3: cleanup
+ * lib/dup3.c: Remove old code, leftover from 2009-12-16.
+
+2011-04-30 Bruno Haible <bruno@clisp.org>
+
+ netdb: Make it work in C++ mode.
+ * lib/netdb.in.h (struct addrinfo): In C++, define as a C struct.
+ (getaddrinfo, freeaddrinfo, getnameinfo): Use macros from c++defs
+ module.
+ * m4/netdb_h.m4 (gl_NETDB_MODULE_INDICATOR): Invoke
+ gl_MODULE_INDICATOR_FOR_TESTS.
+ * modules/netdb-tests (Depends-on): Add netdb-c++-tests.
+ * modules/netdb-c++-tests: New file.
+ * tests/test-netdb-c++.cc: New file.
+
+2011-04-30 Bruno Haible <bruno@clisp.org>
+
+ New modules 'vfscanf', 'vscanf'.
+ * modules/vfscanf: New file.
+ * modules/vscanf: New file.
+ * m4/stdio_h.m4 (gl_STDIO_H): Don't set GNULIB_VFSCANF, GNULIB_VSCANF
+ here.
+ * doc/posix-functions/vfscanf.texi: Mention module 'vfscanf'.
+ * doc/posix-functions/vscanf.texi: Mention module 'vscanf'.
+
+2011-04-30 Bruno Haible <bruno@clisp.org>
+
+ passfd: Add comments.
+ * lib/passfd.c: Add comments about platforms.
+
+2011-04-30 Bruno Haible <bruno@clisp.org>
+
+ sys_uio: Make <sys/uio.h> self-contained.
+ * lib/sys_uio.in.h: Include <sys/types.h> before <sys/uio.h>.
+ * doc/posix-headers/sys_uio.texi: Mention the OpenBSD problem.
+
+2011-04-30 Bruno Haible <bruno@clisp.org>
+
+ sys_socket: Ensure 'struct iovec' definition.
+ * lib/sys_socket.in.h: Include <sys/uio.h> also on platforms that have
+ <sys/socket.h>.
+ * doc/posix-headers/sys_socket.texi: Mention the OpenBSD problem.
+
+2011-04-30 Bruno Haible <bruno@clisp.org>
+
+ sys_uio: Protect definition of 'struct iovec'.
+ * lib/sys_uio.in.h (struct iovec): Avoid redefinition. In C++, define
+ it as a C struct.
+
+2011-04-30 Bruno Haible <bruno@clisp.org>
+
+ manywarnings: fix indentation
+ * m4/manywarnings.m4: Indent by 2 spaces consistently.
+
+2011-04-30 Pádraig Brady <P@draigBrady.com>
+
+ manywarnings: add -Wno-missing-field-initializers if needed.
+ * m4/manywarnings.m4 (gl_MANYWARN_ALL_GCC): Add the above
+ option if it's needed to allow initialization with { 0, }
+
+2011-04-29 Reuben Thomas <rrt@sc3d.org>
+
+ announce-gen: cosmetic improvement
+ * build-aux/announce-gen: Strip any leading ./ from the NEWS file name.
+
+2011-04-29 Jim Meyering <meyering@redhat.com>
+
+ vc-list-files: indent with spaces, not TABs
+ * build-aux/vc-list-files: Convert leading TABs to spaces,
+ to match the style of most other files in gnulib.
+
+ announce-gen: indent with spaces, not TABs
+ * build-aux/announce-gen: Convert all TABs to spaces, to match
+ the style of most other files in gnulib.
+
+2011-04-29 Eric Blake <eblake@redhat.com>
+
+ quotearg: avoid uninitialized variable use
+ * lib/quotearg.c (quoting_options_from_style): Initialize
+ remaining fields, and ensure that custom styles are only used via
+ quoting_options rather than quoting_style.
+
+2011-04-29 Jim Meyering <meyering@redhat.com>
+
+ maint.mk: remove unused VC-tag variable
+ * top/maint.mk (VC-tag): Remove unused variable.
+
+2011-04-29 Bruno Haible <bruno@clisp.org>
+
+ netdb: fix gai_strerror replacements
+ * lib/netdb.in.h: Add _GL_FUNCDECL_RPL definitions.
+ * modules/netdb: Substitute it.
+
+2011-04-29 Jim Meyering <meyering@redhat.com>
+
+ test-getcwd.c: avoid new set-but-not-used warning
+ * tests/test-getcwd.c (test_abort_bug): Exit nonzero for any problem,
+ not just the glibc/abort one that getcwd-abort-bug.m4 detects.
+ * m4/getcwd-abort-bug.m4: Update this now-duplicated code to match,
+ and adjust the code that sets gl_cv_func_getcwd_abort_bug accordingly.
+
+ test-hash.c: avoid a new shadowing warning
+ * tests/test-hash.c (main): Don't shadow "dup".
+
+2011-04-28 Eric Blake <eblake@redhat.com>
+
+ getaddrinfo: fix gai_strerror signature
+ * m4/getaddrinfo.m4 (gl_GETADDRINFO): Detect broken signatures,
+ and work around mingw with UNICODE defined.
+ (gl_PREREQ_GETADDRINFO): Drop redundant decl check.
+ * m4/netdb_h.m4 (gl_NETDB_H_DEFAULTS): Add witness.
+ * modules/netdb (Makefile.am): Substitute it.
+ * lib/netdb.in.h (gai_strerror): Declare replacement.
+ * lib/gai_strerror.c (rpl_gai_strerror): Fix signature.
+ * doc/posix-functions/gai_strerror.texi (gai_strerror): Document
+ the fix.
+
+ getsockopt: avoid compiler warning
+ * lib/getsockopt.c (rpl_getsockopt): Add a cast for mingw.
+ Reported by Matthias Bolte.
+
+ tests: drop unused link dependency
+ * modules/areadlinkat-tests (Makefile.am): Drop stale LDADD.
+ * modules/dirent-safer-tests (Makefile.am): Likewise.
+ * modules/fdopendir-tests (Makefile.am): Likewise.
+ * modules/mkfifoat-tests (Makefile.am): Likewise.
+ * modules/openat-safer-tests (Makefile.am): Likewise.
+ * modules/openat-tests (Makefile.am): Likewise.
+ * modules/readlinkat-tests (Makefile.am): Likewise.
+ * modules/symlinkat-tests (Makefile.am): Likewise.
+ * modules/linkat-tests (Makefile.am): Likewise.
+ (Depends-on): Switch to filenamecat-lgpl.
+ * modules/fdutimensat-tests (test_fdutimensat_LDADD): Drop unused
+ LIBINTL.
+ * modules/utimensat-tests (test_utimensat_LDADD): Likewise.
+ * tests/test-linkat.c (main): Don't require xalloc.
+
+ hash, mgetgroups: drop xalloc dependency
+ * lib/hash.c (includes): Adjust includes.
+ * lib/mgetgroups.c (includes): Likewise.
+ (xgetgroups): Move...
+ * lib/xgetgroups.c: ...to new file.
+ * lib/mgetgroups.h (xgetgroups): Make declaration conditional.
+ * modules/xgetgroups: New file, split from...
+ * modules/mgetgroups: ...here.
+ (Depends-on): Add xalloc-oversized.
+ * modules/hash (Depends-on): Likewise.
+ * modules/hash-tests (Depends-on): Drop xalloc.
+ (test_hash_LDADD): Drop unused library.
+ * tests/test-hash.c (main): Break xalloc dependency.
+ (includes): Drop unused include.
+
+ xalloc-oversized: new module
+ * modules/xalloc-oversized: New module.
+ * modules/xalloc (Depends-on): Add it.
+ * lib/xalloc.h (xalloc_oversized): Move...
+ * lib/xalloc-oversized.h: ...into new file.
+
+ utimecmp: drop dependency on xmalloc
+ * lib/utimecmp.c (utimecmp): Work even if hash table cache fails
+ due to memory pressure.
+ * modules/utimecmp (Depends-on): Drop xalloc.
+
2011-04-27 Eric Blake <eblake@redhat.com>
+ getcwd: fix mingw bugs
+ * m4/getcwd.m4 (gl_FUNC_GETCWD_NULL): Detect one mingw bug.
+ * doc/posix-functions/getcwd.texi (getcwd): Document the problems.
+ * lib/getcwd-lgpl.c (rpl_getcwd): Fix return type.
+
+2011-04-27 Bruno Haible <bruno@clisp.org>
+
+ mkstemps: Ensure declaration on MacOS X 10.5.
+ * lib/stdlib.in.h: Include <unistd.h> when mkstemps is requested.
+ * doc/glibc-functions/mkstemps.texi: Document header file problem on
+ MacOS X.
+
+2011-04-27 Bruno Haible <bruno@clisp.org>
+
+ mkstemp: More documentation.
+ * doc/posix-functions/mkstemp.texi: Document header file problem on
+ MacOS X.
+
+2011-04-27 Bruno Haible <bruno@clisp.org>
+
+ mkstemp: Tweak configure message when cross-compiling.
+ * m4/mkstemp.m4 (gl_FUNC_MKSTEMP): When cross-compiling, qualify the
+ result as a guess.
+
+2011-04-27 Bruno Haible <bruno@clisp.org>
+
+ clean-temp: Clarify what it does.
+ * lib/clean-temp.h: Add more comments.
+ * doc/posix-functions/mkstemp.texi: Tweak reference to 'clean-temp'
+ module.
+ * doc/glibc-functions/mkostemp.texi: Mention 'clean-temp' here too.
+ * doc/glibc-functions/mkstemps.texi: Likewise.
+ * doc/glibc-functions/mkostemps.texi: Likewise.
+
+2011-04-27 Eric Blake <eblake@redhat.com>
+
+ fchdir: avoid extra chdir and fix test
+ * modules/fchdir (Depends-on): Add dosname, filenamecat-lgpl,
+ getcwd-lgpl.
+ * lib/fchdir.c (get_name): Any absolute name will do; it does not
+ have to be canonical.
+ (canonicalize_file_name): Drop unused macro.
+ * m4/dup2.m4 (gl_REPLACE_DUP2): Ensure dup2 is replaced.
+
filenamecat-lgpl: fix licence
* modules/filenamecat-lgpl (License): Mark as LGPLv2+, as intended
when it was first created.
Reported by Tom G. Christensen <tgc@jupiterrise.com>.
2011-03-20 Paul Eggert <eggert@cs.ucla.edu>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
socklen: do not depend on sys_socket
While trying to modify Emacs to use gnulib's socklen module,
* m4/socklen.m4: Update comment about platforms.
2011-03-19 Paul Eggert <eggert@cs.ucla.edu>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
inet_ntop, inet_pton: Simplify.
* modules/inet_ntop (Depends-on): Remove socklen, since sys_socket is
* lib/arpa_inet.in.h: Adjust comment.
2011-03-19 Paul Eggert <eggert@cs.ucla.edu>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
netdb: Simplify.
* modules/netdb (Depends-on): Remove socklen, since sys_socket is
(check): Depend on the new variable, not the hard-coded list.
2011-03-13 Bastien Roucariès <roucaries.bastien@gmail.com>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
passfd module, part 3.
* lib/passfd.h (recvfd): Add a flags argument.
Suggested by Simon Josefsson <simon@josefsson.org>.
2011-02-28 Corinna Vinschen <vinschen@redhat.com> (tiny change)
- Charles Wilson <cygwin@cwilson.fastmail.fm> (tiny change)
- Bruno Haible <bruno@clisp.org> (tiny change)
+ Charles Wilson <cygwin@cwilson.fastmail.fm> (tiny change)
+ Bruno Haible <bruno@clisp.org> (tiny change)
On Cygwin, use /proc file system instead of win32 API.
* lib/relocatable.c: On Cygwin, use file names from /proc, rather than
* lib/strerror_r.c (strerror_r): Fix return type.
2011-01-21 Pádraig Brady <P@draigBrady.com>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
uN_strstr: New unit tests.
* modules/unistr/u8-strstr-tests: New file.
* tests/unistr/test-u32-strstr.c: New file.
2011-01-21 Pádraig Brady <P@draigBrady.com>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
Make uN_strstr functions O(n) worst-case.
* lib/unistr/u-strstr.h (FUNC): In the 8-bit case, use strstr. In the
(configure.ac): Update required libunistring version.
2011-01-21 Pádraig Brady <P@draigBrady.com>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
Prepare for faster uN_strstr functions.
* lib/str-kmp.h: Support definable UNITs.
http://sourceware.org/bugzilla/show_bug.cgi?id=12348
2010-12-28 Bruno Haible <bruno@clisp.org>
- Paul Eggert <eggert@cs.ucla.edu>
+ Paul Eggert <eggert@cs.ucla.edu>
linkat: Make implementation robust against system behaviour variations.
* m4/link-follow.m4 (gl_FUNC_LINK_FOLLOWS_SYMLINK): Define
relate to each other.
2010-12-15 Pádraig Brady <P@draigBrady.com>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
Improve cross-compilation guesses for uClibc.
* m4/memmem.m4 (gl_FUNC_MEMMEM_SIMPLE): When cross-compiling, assume
* m4/strerror_r.m4 (gl_FUNC_STRERROR_R): Fix typo.
2010-11-28 Bruno Haible <bruno@clisp.org>
- Paul Eggert <eggert@cs.ucla.edu>
+ Paul Eggert <eggert@cs.ucla.edu>
Tests for module 'getdomainname'.
* modules/getdomainname-tests: New file.
tests/test-gethostname.c.
2010-11-28 Bruno Haible <bruno@clisp.org>
- Paul Eggert <eggert@cs.ucla.edu>
+ Paul Eggert <eggert@cs.ucla.edu>
getdomainname: Use the system function when possible.
* lib/unistd.in.h: Include <netdb.h>, for getdomainname's declaration.
styles, and some unnecessary blank lines.
2010-10-03 Bruno Haible <bruno@clisp.org>
- Joachim Schmitz <schmitz@hp.com> (tiny change)
+ Joachim Schmitz <schmitz@hp.com> (tiny change)
acl: Add support for ACLs on NonStop Kernel.
* m4/acl.m4 (gl_FUNC_ACL): For Solaris, test for facl(), not for acl().
Reported by Paul Eggert.
2010-09-22 Pádraig Brady <P@draigbrady.com>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
Fix endless loop in mbmemcasecoll.
* lib/mbmemcasecoll.c (apply_towlower): When mbrtowc returns 0, copy 1
Reported by Johan Hattne <johan.hattne@utsouthwestern.edu>.
2010-08-29 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
Make the module 'realloc-gnu' work again on AIX and OSF/1.
* m4/realloc.m4 (gl_FUNC_REALLOC_GNU): Define HAVE_REALLOC_GNU instead
* modules/realloc-gnu (configure.ac): Use gl_MODULE_INDICATOR.
2010-08-29 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
Make the module 'calloc-gnu' work again on AIX and OSF/1.
* m4/calloc.m4 (gl_FUNC_CALLOC_GNU): Define HAVE_CALLOC_GNU instead of
* modules/calloc-gnu (configure.ac): Invoke gl_MODULE_INDICATOR.
2010-08-29 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
Make the module 'malloc-gnu' work again on AIX and OSF/1.
* m4/malloc.m4 (gl_FUNC_MALLOC_GNU): Define HAVE_MALLOC_GNU instead of
* lib/read-file.c (fread_file): Shrink the buffer at the end.
2010-08-28 Giuseppe Scrivano <gscrivano@gnu.org>
- Eric Blake <eblake@redhat.com>
- Bruno Haible <bruno@clisp.org>
+ Eric Blake <eblake@redhat.com>
+ Bruno Haible <bruno@clisp.org>
read-file: Avoid memory reallocations with regular files.
* lib/read-file.c: Include <sys/stat.h>, <stdio.h>, <stdint.h>.
(Match-end-of-line Operator): Mention 'not_eol'.
2010-08-14 Brian Gough <bjg@gnu.org>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
git-merge-changelog: add doc relating to use with bzr and hg.
* lib/git-merge-changelog.c: Add comments regarding bzr, hg, diff3.
* modules/strtod-tests (Makefile.am): Likewise.
2010-07-11 Pádraig Brady <P@draigBrady.com>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
unistr/u8-strchr: Optimize ASCII argument case.
* lib/unistr/u8-strchr.c (u8_strchr): For ASCII arguments, use strchr.
* tests/test-inttostr.c: New file. Test these functions.
2010-06-09 Ben Pfaff <blp@cs.stanford.edu>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
Add "Extending Gnulib" chapter to manual.
* doc/gnulib.texi (Writing Modules): Add cross-reference to new
Suggested by Eric Blake.
2010-06-04 Martin Lambers <marlam@marlam.de>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
havelib: Allow library names with '+' characters.
* m4/lib-link.m4 (AC_LIB_LINKFLAGS, AC_LIB_HAVE_LINKFLAGS,
* modules/libunistring-optional (Files): Likewise.
2010-05-18 Paolo Bonzini <bonzini@gnu.org>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
New module 'libunistring-optional'.
* modules/libunistring-optional: New file.
(func_import): Set the excl_*_tests variables to empty.
2010-04-25 Simon Josefsson <simon@josefsson.org>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
Work around a MacOS X 10.4 bug with openpty.
* doc/glibc-functions/openpty.texi: Mention the MacOS X 10.4 bug.
EPIPE.
2010-04-20 Simon Josefsson <simon@josefsson.org>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
visibility: Don't use -fvisibility if it leads to a warning.
* m4/visibility.m4 (gl_VISIBILITY): Check whether -Werror is usable. If
Reported by Ian Beckwith <ianb@erislabs.net>.
2010-04-18 Andreas Gruenbacher <agruen@suse.de>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
diffseq: Accommodate use-case with abstract arrays.
* lib/diffseq.h (struct context): Remove xvec, yvec fields if ELEMENT
declared.
2010-04-11 Paolo Bonzini <bonzini@gnu.org>
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
libunistring: Improve configure output.
* m4/libunistring.m4 (gl_LIBUNISTRING): Check for libiconv first.
Reported by Hauke Fath <hauke@espresso.rhein-neckar.de>.
2010-04-04 Hauke Fath <hauke@espresso.rhein-neckar.de> (tiny change)
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
wchar: Port to NetBSD 1.5.
* lib/wchar.in.h (WEOF): Provide fallback also when wint_t exists.
* lib/wctype.in.h (WEOF): Likewise.
2010-04-04 Hauke Fath <hauke@espresso.rhein-neckar.de> (tiny change)
- Bruno Haible <bruno@clisp.org>
+ Bruno Haible <bruno@clisp.org>
Port extended stdio to NetBSD 1.5.
* lib/stdio-impl.h [NetBSD]: Include <sys/param.h>.
$(LIBSOCKET).
2010-03-28 Bruno Haible <bruno@clisp.org>
- Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
+ Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
lib-ignore: Determine different options for different compilers.
* m4/lib-ignore.m4 (gl_IGNORE_UNUSED_LIBRARIES): Set a variable which