# complex.h - new in C99
# fenv.h - available in C99, but not older systems
# process.h - mingw specific
+# langinfo.h, nl_types.h - SuS v2
#
AC_CHECK_HEADERS([complex.h fenv.h io.h libc.h limits.h malloc.h memory.h process.h string.h \
regex.h rxposix.h rx/rxposix.h sys/dir.h sys/ioctl.h sys/select.h \
sys/time.h sys/timeb.h sys/times.h sys/stdtypes.h sys/types.h \
sys/utime.h time.h unistd.h utime.h pwd.h grp.h sys/utsname.h \
-direct.h])
+direct.h langinfo.h nl_types.h])
# "complex double" is new in C99, and "complex" is only a keyword if
# <complex.h> is included
# truncate - not in mingw
# isblank - available as a GNU extension or in C99
# _NSGetEnviron - Darwin specific
-# strcoll_l, newlocale - GNU extensions (glibc)
+# strcoll_l, newlocale - GNU extensions (glibc), also available on Darwin
+# nl_langinfo - X/Open, not available on Windows.
#
-AC_CHECK_FUNCS([DINFINITY DQNAN chsize clog10 ctermid fesetround ftime ftruncate fchown getcwd geteuid gettimeofday gmtime_r ioctl lstat mkdir mknod nice pipe _pipe readdir_r readlink rename rmdir select setegid seteuid setlocale setpgid setsid sigaction siginterrupt stat64 strftime strptime symlink sync sysconf tcgetpgrp tcsetpgrp times uname waitpid strdup system usleep atexit on_exit chown link fcntl ttyname getpwent getgrent kill getppid getpgrp fork setitimer getitimer strchr strcmp index bcopy memcpy rindex truncate unsetenv isblank _NSGetEnviron strcoll strcoll_l newlocale])
+AC_CHECK_FUNCS([DINFINITY DQNAN chsize clog10 ctermid fesetround ftime ftruncate fchown getcwd geteuid gettimeofday gmtime_r ioctl lstat mkdir mknod nice pipe _pipe readdir_r readlink rename rmdir select setegid seteuid setlocale setpgid setsid sigaction siginterrupt stat64 strftime strptime symlink sync sysconf tcgetpgrp tcsetpgrp times uname waitpid strdup system usleep atexit on_exit chown link fcntl ttyname getpwent getgrent kill getppid getpgrp fork setitimer getitimer strchr strcmp index bcopy memcpy rindex truncate unsetenv isblank _NSGetEnviron strcoll strcoll_l newlocale nl_langinfo])
# Reasons for testing:
# netdb.h - not in mingw
# check this specifically, we need it for the timespec test below.
# sethostname - the function itself check because it's not in mingw,
# the DECL is checked because Solaris 10 doens't have in any header
+# xlocale.h - needed on Darwin for the `locale_t' API
#
-AC_CHECK_HEADERS(crypt.h netdb.h pthread.h sys/param.h sys/resource.h sys/file.h)
+AC_CHECK_HEADERS(crypt.h netdb.h pthread.h sys/param.h sys/resource.h sys/file.h xlocale.h)
AC_CHECK_FUNCS(chroot flock getlogin cuserid getpriority setpriority getpass sethostname gethostname)
AC_CHECK_DECLS([sethostname])