Separate the module 'waitpid' from the module 'sys_wait'. * lib/sys_wait.in.h (waitpid): Declare only if the 'waitpid' module is present. * m4/sys_wait_h.m4 (gl_SYS_WAIT_MODULE_INDICATOR): Invoke gl_MODULE_INDICATOR_FOR_TESTS. (gl_SYS_WAIT_H_DEFAULTS): Initialize GNULIB_WAITPID. * modules/sys_wait (Depends-on): Remove waitpid. (Makefile.am): Substitute GNULIB_WAITPID. * modules/waitpid (configure.ac): Invoke gl_SYS_WAIT_MODULE_INDICATOR. * tests/test-sys_wait-c++.cc (GNULIB_NAMESPACE::waitpid): Check the signature only if the 'waitpid' module is present. * doc/posix-functions/waitpid.texi: Mention the 'waitpid' module. * NEWS: Mention the change. * modules/grantpt (Depends-on): Add waitpid. * modules/wait-process (Depends-on): Likewise.

Description:
fd_safer_flag() function: adjust a file descriptor result so that it avoids
clobbering STD{IN,OUT,ERR}_FILENO, with specific flags.

Files:
lib/fd-safer-flag.c
lib/dup-safer-flag.c

Depends-on:
cloexec
fcntl
unistd-safer

configure.ac:
gl_MODULE_INDICATOR([fd-safer-flag])

Makefile.am:
lib_SOURCES += fd-safer-flag.c dup-safer-flag.c

Include:
"unistd-safer.h"

License:
GPL

Maintainer:
Eric Blake