long-options: add parse_gnu_standard_options_only Discussed in https://bugs.gnu.org/33468 . * lib/long-options.c (parse_long_options): Use EXIT_SUCCESS instead of 0. (parse_gnu_standard_options_only): Add function to process the GNU default options --help and --version and fail for any other unknown long or short option. See https://gnu.org/prep/standards/html_node/Command_002dLine-Interfaces.html . * lib/long-options.h (parse_gnu_standard_options_only): Declare it. * modules/long-options (depends-on): Add stdbool, exitfail. * top/maint.mk (sc_prohibit_long_options_without_use): Update syntax-check rule, add new function name.

Description:
flock(2) function: advisory file locks.

Files:
lib/flock.c
m4/flock.m4

Depends-on:
sys_file
msvc-nothrow    [test $HAVE_FLOCK = 0]

configure.ac:
gl_FUNC_FLOCK
if test $HAVE_FLOCK = 0; then
  AC_LIBOBJ([flock])
  gl_PREREQ_FLOCK
fi
gl_HEADER_SYS_FILE_MODULE_INDICATOR([flock])

Makefile.am:

Include:
<sys/file.h>

License:
LGPLv2+

Maintainer:
Richard W.M. Jones, Jim Meyering