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2010-12-28coreutils: keep lines within 80-column limitsPaul Eggert
* cfg.mk (LINE_LEN_MAX, FILTER_LONG_LINES): New macros. (sc_long_lines): New rule. * HACKING: Use shorter URLs to the same material. * doc/Makefile.am, doc/coreutils.texi, m4/boottime.m4: * man/help2man, man/stdbuf.x, src/Makefile.am, src/cat.c, src/copy.c: * src/cp.c, src/dd.c, src/df.c, src/du.c, src/groups.c, src/install.c: * src/ls.c, src/md5sum.c, src/mv.c, src/od.c, src/pinky.c, src/ptx.c: * src/readlink.c, src/remove.c, src/rmdir.c, src/setuidgid.c: * src/sort.c, src/tail.c, src/touch.c, tests/Coreutils.pm: * tests/cp/existing-perm-race, tests/cp/perm, tests/cp/preserve-gid: * tests/du/2g, tests/du/long-from-unreadable, tests/init.sh: * tests/install/basic-1, tests/ls/nameless-uid: * tests/ls/readdir-mountpoint-inode, tests/misc/chroot-credentials: * tests/misc/cut, tests/misc/date, tests/misc/join, tests/misc/md5sum: * tests/misc/sha1sum, tests/misc/sha224sum, tests/misc/sort: * tests/misc/sort-continue, tests/misc/sort-files0-from: * tests/misc/sort-rand, tests/misc/stdbuf, tests/misc/tr: * tests/misc/uniq, tests/mv/atomic, tests/mv/part-fail: * tests/mv/part-symlink, tests/mv/sticky-to-xpart, tests/pr/pr-tests: * tests/rm/fail-2eperm, tests/rm/interactive-always: Reformat to fit within 80 columns. * doc/Makefile.am (BAD_POSIX_PERL): New macro. * doc/coreutils.texi: Reword slightly, to make menus and index lines shorter. * src/md5sum.c: Redo --help output so that it fits within 79 columns, since that's a bit more portable and all the other --help strings fit in 79 columns.
2010-08-27stat: add %m to output the mount point for a fileAaron Burgemeister
* src/find-mount-point.c: A new file refactoring find_mount_point() out from df.c * src/find-mount-point.h: Likewise. * src/df.c: Use the new find-mount-point module. * src/stat.c (print_stat): Handle the new %m format. (find_bind_mount): A new function to return the bind mount for a file if any. (out_mount_mount): Print the bind mount for a file, or else the standard mount point given by the find-mount-point module. (usage): Document the %m format directive. * src/Makefile.am: Reference the refactored find-mount-point.c * po/POTFILES.in: Add find_mount_point.c to the translation list * doc/coreutils.texi (stat invocation): Document %m, and how it may differ from the mount point that df outputs. * test/misc/stat-mount: A new test to correlate mount points output from df and stat. * tests/Makefile.am: Reference the new test. * NEWS: Mention the new feature * THANKS: Add the author Signed-off-by: Pádraig Brady <P@draigBrady.com>
2010-07-16randread: don't require -lrtPaul R. Eggert
Programs like 'sort' were linking to -lrt in order to get clock_gettime, but this was misguided: it wasted considerable resources while gaining at most 10 bits of entropy. Almost nobody needs the entropy, and there are better ways to get much better entropy for people who do need it. * gl/lib/rand-isaac.c (isaac_seed): Include <sys/time.h> not "gethrxtime.h". (isaac_seed): Use gettimeofday rather than gethrxtime. * gl/modules/randread (Depends-on): Depend on gettimeofday and not gethrxtime. * src/Makefile.am (mktemp_LDADD, shred_LDADD, shuf_LDADD, sort_LDADD): (tac_LDADD): Omit $(LIB_GETHRXTIME); no longer needed.
2010-07-14maint: omit $(POW_LIB) when linking, as this is no longer neededPaul R. Eggert
* src/Makefile.am (printf_LDADD, seq_LDADD, sleep_LDADD, sort_LDADD): (tail_LDADD, uptime_LDADD): Omit $(POW_LIB), as it's no longer needed due to recent gnulib changes, where the strtod module no longer uses the pow function. strtold needs pow only because it's sometimes aliased to strtod. See http://lists.gnu.org/archive/html/bug-gnulib/2010-07/msg00076.html
2010-07-13sort: parallelize internal sortChen Guo
This patch is by Gene Auyeung, Chris Dickens, Chen Guo, and Mike Nichols, based off of a patch by Paul Eggert, Glen Lenker, et. al., with a basic heap implementation based off of the GDSL heap, originally by Nicolas Darnis. The number of sorts done in parallel is limited to the number of available processors by default, or can be further restricted with the --parallel option. On a dual-die, 8 core Intel Xeon, results show sorting with 8 threads is almost 4 times faster than using a single thread. Timings when sorting a 96MB file: THREADS TIME (s) 1 5.10 2 2.87 4 1.75 8 1.31 Single threaded sorting has also been improved, especially for cheaper comparison operations: COMMAND BEFORE (s) AFTER (s) sort 8.822 8.716 sort -g 10.336 10.222 sort -n 3.077 2.961 LANG=C sort 2.169 2.066 * bootstrap.conf: Add heap, pthread. * coreutils.texi (sort): Describe the new --parallel option. * gl/lib/heap.c: New file. Very basic heap implementation. * gl/lib/heap.h: New file. * gl/modules/heap: New file. * src/Makefile.am: Add LIB_PTHREAD. * src/sort.c: Include heap.h, nproc.h, pthread.h. (MAX_MERGE): New macro. (SUBTHREAD_LINES_HEURISTIC, PARALLEL_OPTION): New constants. (MERGE_END, MERGE_ROOT): New constants. (struct merge_node): New struct. (struct merge_node_queue): New struct. (sortlines temp): Remove declaration. (usage, long_options, main): New option, --parallel. (specify_nthreads): New function. (mergelines): New signature, to emphasize the fact that the HI area must be part of the destination. All callers changed. (sequential_sort): New function, renamed from sortlines. Merge in the functionality of sortlines_temp. (compare_nodes): New function. (lock_node, unlock_node): New functions. (queue_destroy): New function. (queue_init): New function. (queue_insert): New function. (queue_pop): New function. (write_unique): New function. (mergelines_node): New function. (check_insert): New function. (update_parent): New function. (merge_loop): New function. (sortlines): Rewrite to support and use parallelism, with a new signature. All callers changed. (struct thread_args): New struct. (sortlines_thread): New function. (sortlines_temp): Remove. (sort): New argument NTHREADS. All uses changed. Output moved to mergelines_node. (main): disable threading if we are sorting at random. * tests/Makefile.am (TESTS): Add misc/sort-benchmark-random. * tests/misc/sort-benchmark-random: New file. Signed-off-by: Pádraig Brady <P@draigBrady.com>
2010-05-25maint: remove unneeded double quotes on RHS of shell assignmentsJim Meyering
Run this command: git grep -l 'LC_[A-Z]*="' \ | xargs perl -pi -e 's/(LC_[A-Z]*)="(.*?)"/$1=$2/' * src/Makefile.am: Write LC_ALL=$$locale, not LC_ALL="$$locale". * src/date.c (main): Similar, in a comment. * tests/misc/sort-month: Write LC_ALL=$LOC, not LC_ALL="$LOC".
2010-05-17maint: fix the fs-magic-compare ruleJim Meyering
* src/Makefile.am (fs-def): Sort definitions. This is required by fs-magic-compare's use of join.
2010-04-23tests: fix exit status of signal handlers in shell scriptsDmitry V. Levin
The value of `$?' on entrance to signal handlers in shell scripts cannot be relied upon, so set the exit code explicitly. * cfg.mk (sc_always_defined_macros, sc_system_h_headers): Set the exit code in signal handler explicitly to 128 + SIG<SIGNAL>. * src/Makefile.am (sc_tight_scope): Likewise. * tests/test-lib.sh: Likewise.
2010-04-16maint: fix build on platforms that replace strsignalPádraig Brady
* src/Makefile.am (kill_LDADD): Add $(LIBTHREAD) so that we link with the appropriate libraries to provide Thread Local Storage on platforms that replace strsignal (like AIX for example). Tested-by: Daniel Richard G. <danielg@teragram.com>
2010-03-29build: update after change in gnulib's lib-ignore moduleBruno Haible
* src/Makefile.am (AM_LDFLAGS): Define. Use gnulib's new $(IGNORE_UNUSED_LIBRARIES_CFLAGS).
2010-03-18revert "maint: mark makefile "dist-hook" target as PHONY"Ralf Wildenhues
* src/Makefile.am (dist-hook): Do not mark this target as PHONY, explicitly. Automake does it for us.
2010-03-18maint: mark makefile "dist-hook" target as PHONYJim Meyering
* src/Makefile.am (dist-hook): Mark target as PHONY.
2010-02-19maint: clean up the output from syntax-check rulesPádraig Brady
* cfg.mk (sc_tight_scope): Pass the -s (silent) flag to `make` so that it doesn't report about calling sub makes. (sc_check-AUTHORS): Likewise. (sc_strftime_check): Don't display stderr from `info`. * src/Makefile.am (sc_tight_scope): Don't annotate with "GEN". (sc_check-AUTHORS): Likewise.
2010-02-16maint: fix the man page correlation testsPádraig Brady
These checks were not being run as distcheck-hook targets are only supported in the top-level Makefile. Instead these tests are now run during a syntax-check. * cfg.mk (sc_man_file_correlation): A new syntax check to call the 2 existing tests to check the correlation between the programs and man/*.[1x]. * man/Makefile.am (sc_man_file_correlation): Call the 2 existing man page correlation tests. (check-x-vs-1): Remove the "GEN" annotation as it's a bit verbose. (check-programs-vs-x): Likewise. * src/Makefile.am (all_programs.list): Exclude libstdbuf.so from the list of programs. This issue was not noticed as the checks were not actually being run.
2010-02-15doc: fix inconsistent capitalization in --help outputPádraig Brady
* src/base64.c (usage): Don't capitalize the first character in an --option description. * src/stdbuf.c (usage): Likewise. * src/truncate.c (usage): Likewise. * cfg.mk (sc_option_desc_uppercase): A new syntax check to stop this happening in future. * man/Makefile.am (sc_option_desc_uppercase): Ensure all man pages are generated, then search for erroneous uppercase chars. * src/Makefile.am (all_programs): Ensure all commands are built so that all man pages can be generated.
2010-01-01maint: update all FSF copyright year lists to include 2010Jim Meyering
Use this command: git ls-files | grep -v COPYING \ | xargs env UPDATE_COPYRIGHT_USE_INTERVALS=1 \ build-aux/update-copyright
2009-12-26tac: supply link dependencyEric Blake
* src/Makefile.am (tac_LDADD): Add LIB_GETHRXTIME. * THANKS: Update. Reported by Robert Schwebel.
2009-12-01sort: fix link failure on SolarisEric Blake
Commit f9d0bb8481 made sort depend on xnanosleep. * src/Makefile.am (sort_LDADD): Add LIB_NANOSLEEP.
2009-11-06nproc: A new program to count the available processorsGiuseppe Scrivano
* AUTHORS: Add my name. * NEWS: Mention it. * README: Likewise. * bootstrap.conf (gnulib_modules): Add nproc. * doc/coreutils.texi (nproc invocation): Add nproc info. * man/Makefile.am (nproc.1): Add dependency. * man/nproc.x: New template. * man/.gitignore: Ignore generated man page. * po/POTFILES.in: Add src/nproc.c. * src/.gitignore: Exclude nproc. * src/Makefile.am (EXTRA_PROGRAMS): Add nproc. * src/nproc.c: New file. * tests/Makefile.am (TESTS): Add misc/nproc-{avail,positive}. * tests/misc/nproc-avail: New file. * tests/misc/nproc-positive: New file.
2009-10-18maint: factor out duplication in currently unused rulesJim Meyering
* src/Makefile.am (fs_normalize_perl_subst): Define. (fs-magic, fs-kernel-magic): Use it.
2009-10-10maint: touch up previous LDADD patchEric Blake
* src/Makefile.am (dir_LDADD): Delete; the ls_LDADD line covers this.
2009-10-10build: build uname(1) unconditionallyJim Meyering
Before, on a system without the uname function, the build system would detect that and not build/install a uname program. Now that gnulib guarantees a uname function, ... * configure.ac: Don't check for the uname function. * src/Makefile.am (build_if_possible__progs): Move uname... (EXTRA_PROGRAMS): ...to this list.
2009-10-10maint: list program names one per lineJim Meyering
* src/Makefile.am (EXTRA_PROGRAMS): List them one per line. (build_if_possible__progs): Likewise.
2009-10-10build: ls: fix link failure due to missing -laclJim Meyering
* src/Makefile.am (ls_LDADD): Re-add $(LIB_ACL). Inadvertently-removed by commit 78c93601.
2009-10-09maint: touch up previous LDADD patchEric Blake
* src/Makefile.am (stdbuf_LDADD): Add missing primer. (hostname_LDADD, uname_LDADD): Add GETHOSTNAME_LIB. * bootstrap.conf (gnulib_modules): Add uname.
2009-10-09maint: improve additional library trackingEric Blake
* src/Makefile.am (LDADD): Refactor, to make per-library additions to individual programs easier to maintain.
2009-10-08stat: add support for many more file system typesJim Meyering
* src/stat.c (human_fstype): Add the following FS types, from <linux/magic.h>: afs, anon-inode FS, btrfs, cgroupfs, cramfs-wend, debugfs, futexfs, inotifyfs, minux3, securityfs, selinux, xenfs. Also add "nilfs". * src/Makefile.am (fs-kernel-magic): New rule. * NEWS (Bug fixes): Mention this.
2009-10-08stat: recognize CIFS and HFS file system typesJim Meyering
* src/stat.c (human_fstype) [CIFS, HFS]: Add new file system types. Prompted by a report from Stuart Kemp. Normalize the form of a few hexadecimal magic numbers. Alphabetize on S_MAGIC_ case names. * src/Makefile.am (fs-magic-compare, fs-def, fs-magic): New rules, to automate comparison of our list with that in the Linux statfs man page. * NEWS (Bug fixes): Mention it.
2009-09-11rm: rewrite to use ftsJim Meyering
* remove.c: Don't include "unlinkdir.h"; no longer used. Do not include <setjmp.h> or "cycle-check.h". Likewise. Include "xfts.h". (dir_name, dir_len): Remove definitions. (CONSECUTIVE_READDIR_UNLINK_THRESHOLD): Likewise. (INODE_SORT_DIR_ENTRIES_THRESHOLD, NEED_REWIND, D_TYPE): Likewise. (struct dirstack_state, Dirstack_state): Likewise. (g_buf, g_n_allocated): Remove declarations. (hash_freer, hash_compare_strings, rm_malloc): Remove functions. (rm_free, push_dir, top_dir, pop_dir, right_justify): Likewise. (full_filename0, xfull_filename, full_filename_): Likewise. (AD_stack_height, AD_stack_top, AD_stack_pop, AD_stack_clear): Likewise. (obstack_init_minimal, ds_init, ds_clear, ds_free): Likewise. (AD_pop_and_chdir, AD_ensure_initialized, AD_mark_helper): Likewise. (AD_mark_as_unremovable, AD_mark_current_as_unremovable): Likewise. (AD_push_initial, AD_push, AD_push, AD_is_removable): Likewise. (write_protected_non_symlink): Change 3rd parameter from dirstack_state "ds" to full_name. (prompt): Adjust parameters. Now, state comes from FTS/FTSENT pair. Those replace fd_cwd and "ds". Remove "filename". Remove pdirent_type in favor of new "is_dir" parameter. Rename is_empty to is_empty_p. (DO_RMDIR, DO_UNLINK): Remove definitions. (remove_entry, fd_to_subdirp, compare_ino): Remove functions. (dirent_count, dirent_inode_sort_may_be_useful): Likewise. (preprocess_dir): Likewise. (fts_skip_tree, mark_ancestor_dirs, excise, rm_fts): New functions. (remove_cwd_entries, remove_dir, rm_1): Remove functions. (rm): Rewrite as a simple loop calling fts_read and dispatching each entry via rm_fts. * src/rm.c (main): Adapt to new signature of rm(). * bootstrap.conf (gnulib_modules): Remove unlinkdir, no longer used. * src/Makefile.am (sc_tight_scope): Also recognize an extern "enum" declaration. * tests/rm/empty-name: Adjust expected output to match new diagnostic. * NEWS (Improvements): Mention it.
2009-08-30build: quiet "make check" in src/Jim Meyering
* src/Makefile.am (check-duplicate-no-install): Use $(AM_V_GEN). (check-README): Likewise. And $(AM_V_at).
2009-08-19build: avoid "make dist" failure in man/Jim Meyering
Now that "make check" no longer builds programs like arch, ... * src/Makefile.am (dist-hook): Depend on $(all_programs), so that the subsequent build in man/ doesn't fail due to lack of a program like arch that is not going to be installed.
2009-08-18build: perform check-AUTHORS via syntax-check, not via "make check"Jim Meyering
* src/Makefile.am (check): Don't depend on check-AUTHORS. That check fails on systems for which a program like stdbuf is not built. Instead, move this check to "make syntax-check". (sc_check-AUTHORS): Rename rule from check-AUTHORS. * cfg.mk (sc_check-AUTHORS): New rule. Reported by Berhnard Voelker.
2009-06-17stdbuf: A new program to run a command with modified stdio bufferingPádraig Brady
* AUTHORS: Register as the author. * NEWS: Mention this change. * README: Add stdbuf command to list. * configure.ac: Only enable on ELF systems with GCC. * cfg.mk (sc_system_h_headers): Use VC_LIST_EXCEPT rather than VC_LIST, so we can add an exception, if needed. * .x-sc_system_h_headers: New file. Exempt libstdbuf.c. * Makefile.am (syntax_check_exceptions): Add .x-sc_system_h_headers. * doc/coreutils.texi (stdbuf invocation): Add stdbuf info. * man/.gitignore: Ignore generated manpage. * src/.gitignore: Ignore stdbuf and libstdbuf.so binaries. * man/Makefile.am (stdbuf.1): Add dependency. * man/stdbuf.x: New file with example usage. * po/POTFILES.in: Reference new command and shared library sources. * src/Makefile.am (build_if_possible__progs): Add stdbuf and libstdbuf, (pkglib_PROGRAMS): Reference optional shared lib, (libstdbuf_so_LDADD): Ensure we don't link with non PIC libcoreutils.a. (libstdbuf_so_LDFLAGS): Add -shared GCC option, (libstdbuf_so_CFLAGS): Add -fPIC GCC option. (check-README): Exclude libstbuf. (check-AUTHORS): ditto. (sc_tight_scope): Exclude functions starting with __. * src/libstdbuf.c: The LD_PRELOAD shared library to control buffering. * src/stdbuf.c: New file to setup env variables before execing command. * tests/Makefile.am: Reference new test file. * tests/misc/help-version: Set expected exit codes. * tests/misc/invalid-opt: ditto. * tests/misc/stdbuf: Add 9 tests.
2009-05-05tests: fix typo in check-AUTHORS ruleAndreas Schwab
* src/Makefile.am (check-AUTHORS): Set locale.
2009-05-03tests: correct the "make check"-run check-AUTHORS testJim Meyering
* src/Makefile.am (check-AUTHORS): Revert back to using en_US.UTF-8, to ease parsing (English-only) text around the list of names, even when .po files are not installed. Reported by Andreas Schwab. Along the way, use $(AM_V_GEN), not "@". (sc_tight_scope): Use $(AM_V_GEN) here, too. * gnulib: Update submodule to latest, for the proper_name_utf8 fix that makes --version output print the UTF-8 rendering of author names in more cases.
2009-04-25build: adjust use of automake's new $(AM_V_GEN) variableJim Meyering
* src/Makefile.am (dircolors.h, wheel-size.h, wheel.h, fs.h): (version.c, version.h): Use $(AM_V_GEN) only as a prefix of an existing command. Otherwise, it provokes warnings from some "make" programs. Suggestion from Ralf Wildenhues.
2009-04-25tests: fix check-AUTHORS skip logicRalf Wildenhues
* src/Makefile.am (check-AUTHORS): When this test is skipped, be sure to avoid all commands in the recipe, not just those passed to the first shell.
2009-04-24build: use automake's new $(AM_V_GEN) and $(AM_V_at) variablesJim Meyering
* src/Makefile.am (dircolors.h, wheel-size.h, wheel.h, fs.h): (version.c, version.h): Mark with $(AM_V_GEN) and $(AM_V_at), so that the latest automake prints "GEN $@" by default.
2009-04-23tests: make the check-AUTHORS test more portable, now that it's...Jim Meyering
run as part of "make check". * src/Makefile.am (check-AUTHORS): Don't depend on en_US.UTF-8. Instead, use the French UTF8 locale, if configure found one. If not found, just skip the test.
2009-04-23avoid parallel "make distcheck" failure due to two run-in-src/ rulesJim Meyering
Move the check-AUTHORS rule from "syntax-check" to "check". * maint.mk (local-checks-available): Remove check-AUTHORS. (check-AUTHORS): Remove rule. * src/Makefile.am (CLEANFILES): Add $(no_install__progs), since they too are built sometimes. (check-AUTHORS): Split a longer-than-80 sed command. (../AUTHORS): Remove obsolete rule.
2009-04-10build: tight-scope test: don't build excluded programsJim Meyering
* src/Makefile.am (sc_tight_scope): Depend on $(bin_PROGRAMS), not $(all_programs)
2009-03-27tests: fix 'make sc_tight_scope' on cygwinEric Blake
* src/Makefile.am (sc_tight_scope): Ignore leading underscores in symbols.
2009-03-11maint: remove an obsolete FIXME commentJim Meyering
* src/Makefile.am (../AUTHORS): Remove obsolete FIXME comment. There are no longer any installed *.sh programs.
2009-01-29maint: silence some syntax-check rulesJim Meyering
* cfg.mk (sc_strftime_check): Silence the rule. (sc_tight_scope): Likewise. * src/Makefile.am (check-AUTHORS): Likewise.
2009-01-29cp/mv: add xattr supportKamil Dudka
This patch was originally written by Andreas Grünbacher, nowadays available at http://www.suse.de/~agruen/coreutils/5.91/coreutils-xattr.diff * bootstrap.conf: Add gnulib module verror. * po/POTFILES.in: Add lib/verror.c. * m4/xattr.m4: Check for libattr availability, new configure option --disable-xattr. * m4/prereq.m4: Require gl_FUNC_XATTR. * src/Makefile.am: Link cp, mv and ginstall with libattr. * src/copy.h: Add preserve_xattr and require_preserve_xattr to cp_options. * src/copy.c (copy_attr_error): New function to handle errors during xattr copying. (copy_attr_quote): New function to quote file name in error messages printed by libattr. (copy_attr_free): Empty function requested by libattr to free quoted string. (copy_attr_by_fd): New fd-oriented function to copy xattr. (copy_attr_by_name): New name-oriented function to copy xattr. (copy_reg, copy_internal): Call copy_extended_attributes function. * src/cp.c (usage): Mention new --preserve=xattr option. (decode_preserve_arg): Handle new --preserve=xattr option. * src/mv.c: Always attempt to preserve xattr. * src/install.c: Never attempt to preserve xattr. * tests/misc/xattr: New test for xattr support in cp, mv and install. * tests/Makefile.am: Add the new test to list. * doc/coreutils.texi: Mention xattr support, new --preserve=xattr option. * NEWS: Mention the change.
2009-01-01portability: accommodate gnulib's getaddrinfo changeJim Meyering
* src/Makefile.am (pinky_LDADD, who_LDADD): Append $(GETADDRINFO_LIB)
2008-12-23build: do enable $(WERROR_CFLAGS) for src/ files.Jim Meyering
This reverts the more recent commit (of two) entitled "build: add configure-time --enable-gcc-warnings option; avoid warnings". Pádraig Brady spotted the contradiction between the log message and actual change. This reverts commit 292d68565a34b237cd2bf586ace545b7cd3dbfcf.
2008-12-21build: add configure-time --enable-gcc-warnings option; avoid warningsJim Meyering
* bootstrap.conf (gnulib_modules): Add "warnings" module. * configure.ac: Add --enable-gcc-warnings, derived from code in bison. * src/Makefile.am (AM_CFLAGS): Set to $(WARN_CFLAGS) # $(WERROR_CFLAGS) * lib/Makefile.am (AM_CFLAGS): Change spelling to $(WARN_CFLAGS) Don't use $(WERROR_CFLAGS), yet. * src/system.h (usage): Declare. * src/base64.c (usage): Declare to be global, for consistency. * src/timeout.c (usage): Likewise. * src/truncate.c (usage): Likewise. * src/getlimits.c (usage): Likewise. * src/pinky.c (ttyname): Declare with prototype, rather than an empty argument list. * src/who.c (ttyname): Likewise. * src/su.c (crypt, getusershell, setusershell, endusershell): Likewise.
2008-12-21build: turn on $(WERROR_CFLAGS) for src/Jim Meyering
2008-12-21build: add configure-time --enable-gcc-warnings option; avoid warningsJim Meyering
* bootstrap.conf (gnulib_modules): Add "warnings" module. * configure.ac: Add --enable-gcc-warnings, derived from code in bison. * src/Makefile.am (AM_CFLAGS): Set to $(WARN_CFLAGS) # $(WERROR_CFLAGS) * lib/Makefile.am (AM_CFLAGS): Change spelling to $(WARN_CFLAGS) Don't use $(WERROR_CFLAGS), yet. * src/system.h (usage): Declare. * src/base64.c (usage): Declare to be global, for consistency. * src/timeout.c (usage): Likewise. * src/truncate.c (usage): Likewise. * src/getlimits.c (usage): Likewise. * src/pinky.c (ttyname): Declare with prototype, rather than an empty argument list. * src/who.c (ttyname): Likewise. * src/su.c (crypt, getusershell, setusershell, endusershell): Likewise.