Avoid build errors due to wrong references between modules. * lib/uninorm/canonical-decomposition.c: Include "uninorm/decomposition-table.h", not "decomposition-table.h". * lib/uninorm/decomposition.c: Likewise. * lib/uninorm/u8-normalize.c: Include "uninorm/decompose-internal.h", not "decompose-internal.h". * lib/uninorm/u16-normalize.c: Likewise. * lib/uninorm/u32-normalize.c: Likewise. * lib/uninorm/uninorm-filter.c: Likewise. * lib/uninorm/nfkc.c: Likewise. * lib/uninorm/nfkd.c: Likewise. * lib/unicase/u8-casemap.c: Include "unicase/caseprop.h", not "caseprop.h". * lib/unicase/u8-ct-totitle.c: Likewise. * lib/unicase/u8-prefix-context.c: Likewise. * lib/unicase/u8-suffix-context.c: Likewise. * lib/unicase/u16-casemap.c: Likewise. * lib/unicase/u16-ct-totitle.c: Likewise. * lib/unicase/u16-prefix-context.c: Likewise. * lib/unicase/u16-suffix-context.c: Likewise. * lib/unicase/u32-casemap.c: Likewise. * lib/unicase/u32-ct-totitle.c: Likewise. * lib/unicase/u32-prefix-context.c: Likewise. * lib/unicase/u32-suffix-context.c: Likewise. * lib/unicase/u8-tolower.c: Include "unicase/unicasemap.h", not "unicasemap.h". * lib/unicase/u8-toupper.c: Likewise. * lib/unicase/u8-ct-tolower.c: Likewise. * lib/unicase/u8-ct-toupper.c: Likewise. * lib/unicase/u16-tolower.c: Likewise. * lib/unicase/u16-toupper.c: Likewise. * lib/unicase/u16-ct-tolower.c: Likewise. * lib/unicase/u16-ct-toupper.c: Likewise. * lib/unicase/u32-tolower.c: Likewise. * lib/unicase/u32-toupper.c: Likewise. * lib/unicase/u32-ct-tolower.c: Likewise. * lib/unicase/u32-ct-toupper.c: Likewise. * lib/unicase/u8-ct-casefold.c: Include "unicase/unicasemap.h", not "unicasemap.h", and "unicase/casefold.h", not "casefold.h". * lib/unicase/u16-ct-casefold.c: Likewise. * lib/unicase/u32-ct-casefold.c: Likewise.

# ptsname.m4 serial 5
dnl Copyright (C) 2010-2019 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

AC_DEFUN([gl_FUNC_PTSNAME],
[
  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

  dnl Persuade glibc <stdlib.h> to declare ptsname().
  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

  AC_CHECK_FUNCS([ptsname])
  if test $ac_cv_func_ptsname = no; then
    HAVE_PTSNAME=0
  else
    AC_CACHE_CHECK([whether ptsname sets errno on failure],
      [gl_cv_func_ptsname_sets_errno],
      [AC_RUN_IFELSE(
         [AC_LANG_PROGRAM([[#include <errno.h>
      ]], [[
      return ptsname (-1) || !errno;
           ]])],
         [gl_cv_func_ptsname_sets_errno=yes],
         [gl_cv_func_ptsname_sets_errno=no],
         [case "$host_os" in
                           # Guess yes on glibc systems.
            *-gnu* | gnu*) gl_cv_func_ptsname_sets_errno="guessing yes" ;;
                           # If we don't know, assume the worst.
            *)             gl_cv_func_ptsname_sets_errno="guessing no" ;;
          esac
         ])])
    case $gl_cv_func_ptsname_sets_errno in
      *no) REPLACE_PTSNAME=1 ;;
    esac
  fi
])

# Prerequisites of lib/ptsname.c.
AC_DEFUN([gl_PREREQ_PTSNAME], [
  :
])