kc3-lang/gnulib/m4/wcscmp.m4

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• Hash : 9ef347ea
  Author :
  Date : 2024-04-05T12:04:59
  

  Update for NetBSD 9.3 and 10.0.
  
  * doc/*/*.texi: Update for NetBSD 9.3 and 10.0.
  * m4/expm1l.m4 (gl_FUNC_EXPM1L): Update comments and cross-compilation
  guess.
  * m4/log1pl.m4 (gl_FUNC_LOG1PL_WORKS): Likewise.
  * m4/log2l.m4 (gl_FUNC_LOG2L_WORKS): Likewise.
  * m4/printf.m4 (gl_SWPRINTF_DIRECTIVE_LA): Likewise.
  * m4/remainderl.m4 (gl_FUNC_REMAINDERL_WORKS): Likewise.
  * m4/fcntl.m4: Update comments.
  * m4/fenv-environment.m4: Likewise.
  * m4/fenv-exceptions-trapping.m4: Likewise.
  * m4/fnmatch.m4: Likewise.
  * m4/getcwd-abort-bug.m4: Likewise.
  * m4/iswdigit.m4: Likewise.
  * m4/iswxdigit.m4: Likewise.
  * m4/modfl.m4: Likewise.
  * m4/wcscmp.m4: Likewise.
  * m4/wcsncmp.m4: Likewise.
  * m4/wctrans.m4: Likewise.
  * m4/wcwidth.m4: Likewise.
  

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• m4/wcscmp.m4

• # wcscmp.m4
  # serial 6
  dnl Copyright (C) 2011-2024 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_WCSCMP],
  [
    AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
    AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
    AC_CHECK_FUNCS_ONCE([wcscmp])
    if test $ac_cv_func_wcscmp = no; then
      HAVE_WCSCMP=0
    else
      AC_CACHE_CHECK([whether wcscmp works for all wide characters],
        [gl_cv_func_wcscmp_works],
        [AC_RUN_IFELSE(
           [AC_LANG_SOURCE([[
              #include <wchar.h>
              int main ()
              {
                int result = 0;
                { /* This test fails on glibc < 2.15, musl libc 1.2.3, macOS 12.5,
                     FreeBSD 13.2, NetBSD 10.0, OpenBSD 7.2, Solaris 11.4.  */
                  wchar_t a[2] = { (wchar_t) 0x76547654, 0 };
                  wchar_t b[2] = { (wchar_t) 0x9abc9abc, 0 };
                  int cmp = wcscmp (a, b);
                  if (!((wchar_t)-1 < 0 ? cmp > 0 : cmp < 0))
                    result |= 1;
                }
                { /* This test fails on AIX in 64-bit mode.  */
                  wchar_t c[2] = { (wchar_t) 'x', 0 };
                  wchar_t d[3] = { (wchar_t) 'x', (wchar_t) 0x9abc9abc, 0 };
                  int cmp = wcscmp (c, d);
                  if (!((wchar_t)-1 < 0 ? cmp > 0 : cmp < 0))
                    result |= 2;
                  /* This test fails on glibc 2.37 on arm and arm64 CPUs.  */
                  cmp = wcscmp (d, c);
                  if (!((wchar_t)-1 < 0 ? cmp < 0 : cmp > 0))
                    result |= 4;
                }
                return result;
              }
              ]])
           ],
           [gl_cv_func_wcscmp_works=yes],
           [gl_cv_func_wcscmp_works=no],
           [case "$host_on" in
              # Guess no on glibc versions < 2.15.
              *-gnu* | gnu*)
                AC_EGREP_CPP([Unlucky],
                  [
  #include <features.h>
  #ifdef __GNU_LIBRARY__
   #if (__GLIBC__ == 2 && __GLIBC_MINOR__ < 15)
    Unlucky GNU user
   #endif
  #endif
                  ],
                  [gl_cv_func_wcscmp_works="guessing no"],
                  [gl_cv_func_wcscmp_works="guessing yes"])
                ;;
              # Guess no on musl systems.
              *-musl* | midipix*) gl_cv_func_wcscmp_works="guessing no" ;;
              # If we don't know, obey --enable-cross-guesses.
              *) gl_cv_func_wcscmp_works="$gl_cross_guess_normal" ;;
            esac
           ])
        ])
      case "$gl_cv_func_wcscmp_works" in
        *yes) ;;
        *) REPLACE_WCSCMP=1 ;;
      esac
    fi
  ])
  

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