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The race is unlikely, as timeout(1) needs to receive a signal
in the few operations between waitpid() returning and exit().
Also the system needs to have reallocated the just released pid
in this time window.
Previously we never disabled the signal handler that sent
the termination signal to the "child" pid. However once waitpid()
has reaped the child, the system is free to allocate that pid,
so we must ensure we don't process any further signals.
* build-aux/gen-lists-of-programs.sh: Build timeout(1) optionally...
* configure.ac: ...predicated on sigsuspend() being available.
* src/timeout.c (block_cleanup): A new function to ensure the
cleanup() handler is disabled after waitpid has returned.
(main): Use sigsuspend() to wait with cleanup() enabled but
disabled once it returns, and thus disabled for the waitpid() call.
(monitored_pid): Change to the more accurate pid_t.
* NEWS: Mention the fix.
Fixes http://bugs.gnu.org/25624
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A lot of this is converting http: to https:.
Also, gmane went away, so remove URLs that no longer work and
are not easy to figure out what they were.
Some of this stuff is so old that it no longer matters anyway.
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Run "make update-copyright" and then...
* gnulib: Update to latest with copyright year adjusted.
* tests/init.sh: Sync with gnulib to pick up copyright year.
* bootstrap: Likewise.
* tests/sample-test: Adjust to use the single most recent year.
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Problem reported by Marcel Böhme (Bug#24996).
* configure.ac (WERROR_CFLAGS): Avoid -Wtype-limits.
* src/pr.c (col_sep_string): Now a const pointer. All uses changed.
(integer_overflow): New function.
(separator_string, main, init_parameters, init_store_cols):
Check for integer overflow.
(align_column, read_line, print_stored): Avoid integer overflow.
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Run "make update-copyright" and then...
* gnulib: Update to latest with copyright year adjusted.
* tests/init.sh: Sync with gnulib to pick up copyright year.
* bootstrap: Likewise.
* tests/sample-test: Adjust to use the single most recent year.
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Reported by Rich Burridge in: http://bugs.gnu.org/22087
* configure.ac (HAVE_UT_HOST, HAVE_C_LINE, stdbuf):
Pacify picky compilers that complain about unreachable statements.
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programs may not be built due to missing system dependencies,
or any program can be excluded at configure time with
--enable-no-install-program. So ensure we're not testing the
system versions in these cases.
* init.cfg (print_ver_): Call require_built_ first.
* tests/misc/tty-eof.pl: Skip programs not built.
* tests/Coreutils.pm (run_tests): Likewise.
* tests/misc/ls-misc.pl: Use 'env test' rather than abs path.
* tests/misc/test-diag.pl: Likewise.
* tests/local.mk: Adjust include order for dependencies.
* tests/misc/arch.sh: Remove redundant calls to require_built_.
* tests/misc/chroot-fail.sh: Likewise.
* tests/misc/groups-dash.sh: Likewise.
* tests/misc/groups-version.sh: Likewise.
* tests/misc/stdbuf.sh: Likewise.
* tests/cp/acl.sh: Remove problematic call to print_ver_ [gs]etfacl.
* tests/mv/acl.sh: Likewise.
* cfg.mk (sc_env_test_dependencies): A new syntax check to enforce
specifying dependencies with print_ver_ for programs
specified through the env command.
* du/bigtime.sh: Add new print_ver_ dependencies.
* du/max-depth.sh: Likewise.
* dd/ascii.sh: Likewise.
* tests/ls/capability.sh: Likewise.
* tests/ls/root-rel-symlink-color.sh: Likewise.
* tests/misc/chroot-fail.sh: Likewise.
* tests/misc/readlink-fp-loop.sh: Likewise.
* tests/misc/sort-debug-keys.sh: Likewise.
* tests/readlink/can-e.sh: Likewise.
* tests/readlink/can-f.sh: Likewise.
* tests/readlink/can-m.sh: Likewise.
* tests/tail-2/inotify-race.sh: Likewise.
* tests/tail-2/inotify-race2.sh: Likewise.
* tests/touch/no-create-missing.sh: Likewise.
* tests/touch/no-dereference.sh: Likewise.
* tests/misc/printenv.sh: Tweak to avoid syntax check trigger.
* tests/misc/help-version.sh: Likewise.
* tests/misc/yes.sh: Likewise.
* tests/misc/printf-quote.sh: Use previously unused $prog.
* configure.ac (EXTRA_MANS): Add $gl_no_install_prog to the list
so that check-x-vs-1 syntax check is satisfied.
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* configure.ac: Comment on why we link rather than run the test,
and remove the moot __ELF__ check since we never ran it anyway,
and the new CFLAGS and LDFLAGS are a more direct test of support.
* tests/misc/wc-parallel.sh: Fix a syntax error in the previous change.
* tests/misc/md5sum-parallel.sh: Use better error checking, consistent
with that used in wc-parallel.sh.
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Problems reported by Michael Felt, and and part of this fix taken
from code suggested by Pádraig Brady in:
http://bugs.gnu.org/20733#112
* configure.ac (stdbuf_supported): Check for warnings, and
for -fPIC and -shared, for AIX.
* src/stat.c (STRUCT_STATVFS): Define to struct statvfs64 if
STATFS is statvfs64.
* src/sync.c (sync_arg) [_AIX]: Open in write mode,
since AIX fsync doesn't work on read-only file descriptors.
* tests/misc/wc-parallel.sh: Skip test if xargs -P does not work.
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Now that we depend on gettext >= 0.19.2 remove the workaround
for issues in autopoint 0.18.3. Note the scheme currently used in
newer gettext (autopoint) to avoid these issues requires
autoconf >= 2.69, therefore we update this requirement also.
Note the gettext version dependence from gnulib comes from
gnulib using gettext macros, and coreutils indirectly depends on
the gettext module due to:
http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=commitdiff;h=41dca647
bootstrap will then update m4/po.m4 and thus require a
supportng gettext version.
* bootstrap: Remove moot warning (resyncing with gnulib).
* configure.ac (AC_PREREQ): Change to 2.69 (now 3 years old).
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gnulib now only checks that the printf routines never crash,
which is all coreutils currrently requires, and so we revert
commit v8.23-81-gf57bfbb to let gnulib decide whether to replace
the system printf routines.
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* bootstrap.conf: 0.19.2 is available on openSUSE-13.2,
Debian-8.0, and Ubuntu-14.10. Given there were issues
with earlier 0.19 gettext releases, set this as the new minimum.
* configure.ac (AM_GNU_GETTEXT_VERSION): Likewise.
Reported by Bernhard Voelker
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* bootstrap.conf (gnulib_modules): Add file-has-acl.
(buildreq): Bump autopoint and gettext to 0.19.4.
* configure.ac (AM_GNU_GETTEXT_VERSION):
Bump to 0.19.4.
* gl/lib/tempname.c.diff, gl/lib/tempname.h.diff:
Merge recent gnulib changes.
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Run "make update-copyright" and then...
* tests/sample-test: Adjust to use the single most recent year.
* tests/du/bind-mount-dir-cycle-v2.sh: Fix case in copyright message,
so that year is updated automatically in future.
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glibc <= 2.5 would crash when passed invalid long double values,
therefore internal gnulib routines were used, essentially only by od,
to output such invalid values. Later glibc versions don't crash,
as per https://sourceware.org/bugzilla/show_bug.cgi?id=4586
and subsequently od was adjusted to use the system printf routines
through the use of the ftoastr module with commit v8.7-22-ga71c22f.
Consequently our testing of this feature was moot, and use of
the gnulib printf replacement for printf(1), od(1) and error(3) etc.
was redundant.
* configure.ac (gl_printf_safe): Unset so that we don't check that
"nan" is output for these long double values.
* tests/misc/od-float.sh: Adjust all existing checks to fail if od
exits with failure status (like crashing for example). Add a new case
for one of the problematic invalid long double values for x86_64.
We only check that od exits successfully at present, which may change
if https://sourceware.org/bugzilla/show_bug.cgi?id=17661 is resolved.
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* .gitignore: Remove reference to no longer generated make file.
* configure.ac: Don't bother generating placeholder make file.
* man/local.mk: Hardcode the man page deps list for normal builds
to be compatible with all make implementations and configure options.
Note in SINGLE_BINARY mode, all man pages will be generated on
any change to the coreutils binary, but development will generally
not be done in this mode, so this shouldn't be an issue.
Fixes http://bugs.gnu.org/18055
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* src/local.mk (transform): Skip the transformation for libstdbuf
since that should not be subject to name clashes, and we need
to reference the name directly in LD_PRELOAD etc.
* configure.ac: Add a comment on the coupling of pkglibexec_PROGRAMS
to $(transform).
Issue reported at https://trac.macports.org/ticket/44922
Improved by Nick Bowler
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* configure.ac: Don't add stdbuf to the list of programs to build
if EXEEXT is set, as that is not handled in configure.ac for
libstdbuf.so yet (see bin_PRGRAMS handling in configure.ac).
Also the LD_PRELOAD mechanism will need to be adjusted to support
cygwin in any case, so avoid stdbuf completely in this case for now.
Problem reported by Eric Blake.
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This fixes a problem with native Solaris 'make', which does not
grok '-include' lines (a GNU extension to POSIX 'make').
* configure.ac (man/dynamic-deps.mk): Create it, with an old
time stamp, if doing dynamic dependency tracking.
* man/local.mk (DISTCLEANFILES): Put man/dynamic-deps.mk here,
rather than in CLEANFILES.
(man/dynamic-deps.mk): Don't create it read-only, so that we
can easily touch it later.
Include it with '@AMDEP_TRUE@@am__include@', not with '-include',
as '-include' does not work with native Solaris 'make'.
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Add the --enable-single-binary option to the configure file.
When enabled, this option builds a single binary file containing
the selected tools. Which tool gets executed depends on the value
of argv[0] which can be set implicitly through symlinks to the
single program.
This setup reduces significantly the size of a complete coreutils
install, since code from lib/libcoreutils.a is not duplicated in
every one of the more than 100 binaries. Runtime overhead is
increased due to more dynamic libraries being loaded, and extra
initialization being performed for all utils. Also initially
a larger binary is loaded from storage, though this is usually
alleviated due to caching and lazy mmaping of unused blocks,
and in fact the single binary should have better caching
characteristics.
Comparing the size of the individual versus single binary on x86_64:
$ cd src
$ size coreutils
$ size -t $(../build-aux/gen-lists-of-programs.sh --list-progs |
grep -Ev '(coreutils|libstdbuf)') | tail -n1
text data bss dec hex filename
1097416 5388 88432 1191236 122d44 src/coreutils
4901010 124964 163768 5189742 4f306e (TOTALS)
Storage requirements are reduced similarly:
$ cd src
$ du -h coreutils
$ du -ch $(../build-aux/gen-lists-of-programs.sh --list-progs |
grep -Ev '(coreutils|libstdbuf)') | tail -n1
1.2M coreutils
5.3M total
When installing, the makefile will create either symlinks or
shebangs based on the --enable-single-binary setting, for
each configured tool. In this way, all the tools are still
callable individually, but they are all implemented by the same
"coreutils" binary installed on the same directory.
* .gitignore: Add new generated files.
* Makefile.am: New rules to generate build-aux/gen-single-binary.sh
and install symlinks.
* NEWS: Mention the new feature.
* README: Add "coreutils" to the list of utils.
* bootstrap.conf: Regenerate src/single-binary.mk
* build-aux/gen-lists-of-programs.sh: New --list-progs option.
* build-aux/gen-single-binary.sh: Regenerate
* configure.ac: New --enable-single-binary option and other variables.
Disallow --enable-single-binary=symlinks with --program-prefix et. al.
* man/coreutils.x: Manpage hook.
* man/local.mk: Add manpage hook and fix dependencies.
* src/coreutils.c: Multicall implementation.
* src/local.mk: New rules for the single binary option.
* tests/local.mk: Add $single_binary_progs to support
require_built_() from init.cfg
* tests/misc/env.sh: Avoid the use of symlink to echo.
* tests/misc/help-version.sh: Add exception for coreutils.
* tests/install/basic-1.sh: Really avoid using ginstall strip
functionality if there is an issue with the independent strip command.
* src/kill.c: Changes to call exit() in main.
* src/readlink.c: Likewise.
* src/shuf.c: Likewise.
* src/timeout.c: Likewise.
* src/truncate.c: Likewise.
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* configure.ac: Remove the -Wsuggest-attribute=pure
enablement on GCC >= 4.7, as that was moot since
gnulib was already enabling that warning in its default set.
The false positive was seen with 4.6.2, but confirmed
not present in 4.6.3, so that's sufficiently old to
just leave this enabled unconditionally.
Remove the -Wsuggest-attribute={const,noreturn}
enablement, as gnulib already has those in the default set.
Enable the -Wlogical-op warning for GCC >= 4.8.0
as that is confirmed OK with coreutils at least, due to
fixing: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43772
Remove the -Wno-logical-op override since the main
-Wlogical-op flag is now sufficient to control this warning
as of GCC 4.6.3 at least.
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* configure.ac: When looking for a .git checkout, exclude repos that
contain a .tarball-version file as these are probably releases
that are imported into git for patch management.
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__SUNPRO_C >= 0x590 /*12.0*/ supports __attribute((constructor))
required by stdbuf, so use a more direct check for this.
Note ensure that --libexecdir is set to the appropriate
install location for libstdbuf.so so that stdbuf works
when installed on the system like it does when running
tests in the build directory.
* configure.ac (stdbuf_supported): Use a test prog to determine support.
* src/libstdbuf.c (stdbuf): Define appropriately for non GCC compilers,
and provide early feedback (compilation warning) if trying to compile
libstdbuf without the necessary support.
* src/stdbuf.c (set_LD_PRELOAD): Add a note on having stdbuf
look for libstdbuf.so in the default lib search path.
* cfg.mk (sc_prohibit-gl-attributes): Adjust so we can exclude
libstdbuf.so from prohibiting '__attribute', since we want
this form to avoid silently eliding this required attribute on non GCC.
Reported and tested by Rich Burridge.
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Problem reported by Rich Burridge.
* src/stat.c [HAVE_GETATTRAT]: Include <attr.h>, <sys/nvpair.h>.
(print_statfs, print_stat, print_it):
Pass fd, too, for the benefit of get_birthtime.
All uses changed.
(get_birthtime): New function, for porting to Solaris 11.
(print_stat): Use it.
* configure.ac (getattrat, LIB_NVPAIR): New checks.
* src/local.mk (src_stat_LDADD): Add $(LIB_NVPAIR).
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Run "make update-copyright", but then also run this,
perl -pi -e 's/2\d\d\d-//' tests/sample-test
to make that one script use the single most recent year number.
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* configure.ac: Don't change the gnulib default of 'no' for
whether to link with openssl system libraries if available.
Distributions can explicitly enable this as their policy allows.
* NEWS: Adjust accordingly.
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* configure.ac: Use gl_SET_CRYPTO_CHECK_DEFAULT() to set the
coreutils default for --with-openssl early, so that the
help text can be provided in a standard and complete form.
* gnulib: Update to incorporate a build fix on platforms
with only some of md5 and sha* implemented by libcrypto.
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libcrypto is generally available and has well optimized
crypto hash routines particular to various systems.
For example, testing sha1sum with openssl-1.0.0j
on an i3-2310M, gives a performance boost of about 40%:
$ time sha1sum.old --tag ~/test.iso
SHA1 (/home/padraig/test.iso) = 3c27f7ed01965fd2b89e22128fd62dc51a3bef30
real 0m4.692s
user 0m4.499s
sys 0m0.162s
$ time sha1sum.new --tag ~/test.iso
SHA1 (/home/padraig/test.iso) = 3c27f7ed01965fd2b89e22128fd62dc51a3bef30
real 0m2.685s
user 0m2.512s
sys 0m0.170s
* configure.ac: By default, enable use of libcrypto if available.
* src/local.mk: Link with libcrypto.
* NEWS: Mention the md5sum and sha*sum improvements.
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* configure.ac: If clang, add -Wno-format-extra-args and
-Wno-tautological-constant-out-of-range-compare.
* gl/lib/rand-isaac.c (ind):
* gl/lib/randread.c (readisaac):
* src/ls.c (dev_ino_push, dev_ino_pop):
* src/sort.c (buffer_linelim):
* src/system.h (is_nul):
* src/tail.c (tail_forever_inotify):
Rewrite to avoid casts that clang dislikes.
It's good to avoid casts anyway.
* src/expr.c (integer_overflow): Declare only if it exists.
(die): Remove; unused.
* src/ls.c (dev_ino_push): New function, replacing ...
(DEV_INO_PUSH): ... this removed macro. All uses changed.
(decode_switches): Rewrite "str"+i to &str[i].
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Run "make update-copyright", but then also run this,
perl -pi -e 's/2\d\d\d-//' tests/sample-test
to make that one script use the single most recent year number.
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* configure.ac: Wrap the recently introduced long line.
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* configure.ac: Only enable warnings automatically when
on GCC >= 4.6 (and when building from a git checkout)
as that was the first GCC version to support fine-grained
control of warnings, allowing them to be adjusted around
certain code sections. gnulib relies on this for certain
warnings, so avoid auto enabling this option lest we trigger
build failures on now over two year old compilers.
Reported by Zartaj Majeed with GCC 4.5.3 on cygwin.
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When _FORTIFY_SOURCE is defined by the compiler or via flags, as
it is on Gentoo, do not override it. Otherwise we get many
redefinition warnings.
* configure.ac (FORTIFY_SOURCE): Check if _FORTIFY_SOURCE is defined.
This addresses http://bugs.gnu.org/12714
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* configure.ac: Here, by adding a missing '*' to the wildcard in
a 'case' construct over the contents of $PERL. Introduced in
commit v8.19-41-g00f5ba1.
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* bootstrap.conf (gnulib_modules): Use the new module.
(bootstrap_post_import_hook): Invoke prefix-gnulib-mk.
* configure.ac (AC_CONFIG_FILES): Remove lib/Makefile.
* lib/Makefile.am: Renamed...
* lib/local.mk: ...to this.
* src/local.mk (CLEANFILES): Append, don't set.
(noinst_LIBRARIES): Likewise.
(AM_CPPFLAGS): Don't set this here.
* Makefile.am (AM_CPPFLAGS): Define here instead.
(noinst_LIBRARIES, CLEANFILES, MOSTLYCLEANDIRS, MOSTLYCLEANFILES):
Initialize here, so we can append to them from each included local.mk
(SUBDIRS): Remove "lib".
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* src/local.mk (AM_CFLAGS): Don't use $(WARN_CFLAGS) here.
* cfg.mk (src_CFLAGS, lib_CFLAGS, gnulib-tests_CFLAGS): Define here
instead.
(AM_CFLAGS): Augment using the above.
* configure.ac: Note that the configure-time option,
--enable-gcc-warnings now functions only when using GNU make.
Well, currently it does still work in gnulib-tests, but that should
soon be fixed.
Improved-by: Stefano Lattarini
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Anyone developing on coreutils can be assumed to have a new enough
environment, such that enabling gcc warnings by default will be
useful. Tarballs still default to no warnings, and the defaults
can still be overridden with --disable-gcc-warnings.
* configure.ac (gl_gcc_warnings): Set default based on environment.
Suggested by Bernhard Voelker.
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* Makefile.am (SUBDIRS): Remove 'tests'.
(include): The '$(top_srcdir)/tests/local.mk' file.
(check-root): Remove this convenience target, it's no longer needed
now that the "real" check-root target once in 'tests/Makefile' will
land in the top-level makefile.
* configure.ac (AC_CONFIG_FILES): Remove 'tests/Makefile'.
* tests/Makefile.am: Rename ...
* tests/local.mk: ... like this, with a lot of adjustments.
* tests/init.cfg: Move ...
* init.cfg: ... here. This is necessary, for a limitation of the
gnulib-provided 'tests/init.sh', which unconditionally look for
'init.cfg' in the $(srcdir) directory.
* tests/*/*.sh: Adjust: expect init.sh to be in '$srcdir/tests',
not in '$srcdir', and extend $PATH with './src', not with '../src'.
* tests/Coreutils.pm: Adjust similarly.
* tests/pr/pr-tests.pl ($pfx): Likewise.
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This is just a preparatory refactoring in view of future changes.
* configure.ac (AC_SUBST): New 'built_programs'.
* tests/Makefile.am (AM_TESTS_ENVIRONMENT): Simply define the exported
variable 'built_programs' to the expansion of the '$(built_programs)'
AC_SUBST'd make variable.
(.built-programs): Remove this now-unneeded convenience target.
(CLEANFILES, check_DATA): Delete, no longer needed.
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* configure.ac: Disable a new gcc warning, -Wsuggest-attribute=format,
since it triggers on copy.c (which I'm not inclined to adjust) and
factor.c's use of vfprintf which would appear to require a change
to stdio.h.
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* configure.ac: No need to use 'gl_ADD_PROG' and an indirection
variable '$optional_pkglib_progs' to declare the 'libstdbuf.so'
"libexec" program; the decision to whether compile that program
is not up to the user, but it only and simply depends on whether
the 'stdbuf' "bin" program is to be built or not.
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* configure.ac: Adjust and improve few comments.
(MAN): Rename ...
(man1_MANS): ... to this.
Ensure it isn't initialized in all Makefiles (which would lead
to spurious errors), by calling AM_SUBST_NOTMAKE on it.
Also call AM_SUBST_NOTMAKE on 'EXTRA_MANS', for consistency.
* man/local.mk (man1_MANS): Simply define to '@man1_MANS@'.
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The AC_SUBST'd variable '$(NO_INSTALL_PROGS_DEFAULT)' is only used in
makefile expressions expanding the list of manual pages that are not
built by default (but might need to be when a distribution tarball
is created). Such expressions exploited a feature of make variable
expansion -- namely, $(VAR:%=dir/%.x) -- that, while seemingly quite
portable in practice, is not POSIX-conforming, and could break on
lesser vendor make implementations. So kill two birds with one stone,
by getting rid of the $(NO_INSTALL_PROGS_DEFAULT) intermediate variable
and improving makefile portability in the process.
While at it, we also clean up some other minor naming inconsistency
and useless indirection.
* configure.ac (NO_INSTALL_PROGS_DEFAULT): Don't define or AC_SUBST
anymore; instead ...
(EXTRA_MANS): ... define and AC_SUBST these.
* man/local.mk (extra_man_1): Rename ...
(EXTRA_MANS): ... like this, explicitly making clear it's AC_SUBST'd.
(extra_man_x): It's used only once, no need to define it; just inline
its only expansion where needed.
(EXTRA_DIST): Adjust.
(ALL_MANS): New, union of $(EXTRA_MANS) and $(dist_man1_MANS).
* cfg.mk (check-x-vs-1, sc_option_desc_uppercase): Rely on $(ALL_MANS)
rather than on $(NO_INSTALL_PROGS_DEFAULT) and $(dist_man1_MANS).
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The code deciding which coreutils programs to build (depending on
defaults, system capabilities, and user requests) is overly complex
and rather confusing. Let's begin simplifying it by removing some
non-strictly-necessary indirection variables.
* configure.ac: Adjust and improve few comments.
(OPTIONAL_BIN_PROGS, OPTIONAL_PKGLIB_PROGS): Rename ...
(bin_PROGRAMS, pkglibexec_PROGRAMS): ... like these, respectively.
Ensure they aren't initialized in all Makefiles (which would lead
to spurious errors), by calling AM_SUBST_NOTMAKE on them.
* src/local.mk: Adjust and improve few comments.
(bin_PROGRAMS, pkglibexec_PROGRAMS): Simply define
to the corresponding '@substitution@'.
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* Makefile.am (SUBDIRS): Remove 'src'. Ensure '.' is listed before
'tests' and 'gnulib-tests'.
(dist-hook): Adjust: we must now tweak the top-level Makefile.in
in $(distdir), not the one in the 'src/' subdir (which is gone).
(include): The '$(top_srcdir)/src/local.mk' file.
* build-aux/gen-lists-of-programs.sh: Adjust the generation of the
automake input fragment.
* tests/Makefile.am (.built-programs): Adjust.
* cfg.mk (all_programs): Remove this convenience rule; it's no
longer needed, now that we can rely directly on the contents of
$(all_programs).
(sc_option_desc_uppercase, check-programs-vs-x:): Adjust lists
of prerequisites accordingly.
(all-progs-but-lbracket): Simplify definition accordingly.
* configure.ac ($OPTIONAL_BIN_PROGS): Adjust definition.
($OPTIONAL_PKGLIB_PROGS): Likewise.
($NO_INSTALL_PROGS_DEFAULT): Tweak definition, for consistency.
(AC_CONFIG_FILES): Remove 'src/Makefile'.
* src/Makefile.am: Rename ...
* src/local.mk: ... like this, with a lot of adjustments. In
addition ...
(all_programs): ... remove this now-unneeded convenience target.
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This is in preparation of future changes. Still, this patch
leaves the build system in a better shape; true, with more
indirections, but also with less convoluted and brittle hacks.
Unfortunately, this commit also makes some rebuild rules
incomplete; that will son be fixed by follow-up patches.
* build-aux/gen-lists-of-programs.sh: New, generates autoconf
and automake input fragments that define "lists" of all coreutils
programs, with further distinctions about how and when these
programs should be built (by default; if the system is capable
enough; only if the user asks for them explicitly). This is
useful to avoid duplicating the definitions of these lists among
several files (at least 'configure.ac' 'src/Makefile.am'); such
duplication had proved a source of inconsistencies and bugs in
the past. And the pre-existing way to avoid such duplication,
as implemented in 'configure.ac' before this patch, was overly
complex and brittle.
* Makefile.am (EXTRA_DIST): Distribute the new script.
* bootstrap.conf (bootstrap_post_import_hook): Run the new script
to generate 'm4/cu-progs.m4' and 'src/cu-progs.mk'.
* .gitignore: Ignore those files.
* configure.ac: Include 'm4/cu-progs.m4', and decidedly simplify
most of the program lists definition and processing accordingly.
* src/Makefile.am: Similarly include 'src/cu-progs.mk', containing
definition of variables $(default__progs), $(no_install__progs)
and $(build_if_possible__progs). Accordingly ...
(no_install__progs, build_if_possible__progs): ... remove.
(EXTRA_DIST): Adjust definition.
Adjust a comment.
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Starting with glibc 2.15, the system headers refuse to compile
unconditional use of FORTIFY_SOURCE if optimization is disabled
but -Werror is in effect.
* configure.ac (FORTIFY_SOURCE): Make conditional.
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* configure.ac (AM_CONDITIONAL): Set the conditional 'HAVE_PERL' to
true if the configure-time checks (as run by gl_PERL) have been able
to find a working perl.
* tests/no-perl: New script, report a diagnostic about "missing perl"
and exit with status 77.
* tests/Makefile.am (EXTRA_DIST): Distribute it.
(TESTSUITE_PERL): New, define to '$(PERL)' if a perl interpreter has
been found at configure time (i.e., if the 'HAVE_PERL' automake
conditional is true), and to '$(srcdir)/no-perl' otherwise.
(LOG_COMPILER): Use $(TESTSUITE_PERL) instead of $(PERL).
(XPL_LOG_COMPILER): Likewise.
* tests/shell-or-perl: Simplify: no need to actually check whether
perl is working.
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Now that we use AM_TESTS_ENVIRONMENT, we must require
Automake >= 1.11.2.
* configure.ac (AM_INIT_AUTOMAKE): Bump version requirement to 1.11.2.
* bootstrap.conf ($buildreq): Likewise.
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This is not strictly required now (it will be once we make more
parts of the coreutils build system non-recursive), but enabling
it early helps to ensure that we don't unwittingly introduce any
incompatibility or subtle breakage later.
* configure.ac (AM_INIT_AUTOMAKE): Add 'subdir-objects'.
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