kc3-lang/gnulib/m4/fdopendir.m4

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• Hash : 86a9695e
  Author :
  Date : 2023-02-17T16:24:34
  

  Improve cross-compilation from midipix.
  
  Reported by Ørjan Malde <red@foxi.me> at
  <https://lists.gnu.org/archive/html/bug-gnulib/2023-02/msg00131.html>.
  
  Since midipix consists of musl libc based on an emulation of Linux system
  calls, for pure libc functionality it can be treated like musl libc.
  
  * m4/calloc.m4 (_AC_FUNC_CALLOC_IF): Treat midipix like systems with
  musl libc.
  * m4/cbrtl.m4 (gl_FUNC_CBRTL): Likewise.
  * m4/ceil.m4 (gl_FUNC_CEIL): Likewise.
  * m4/ceilf.m4 (gl_FUNC_CEILF): Likewise.
  * m4/ceill.m4 (gl_FUNC_CEILL): Likewise.
  * m4/exp2l.m4 (gl_FUNC_EXP2L): Likewise.
  * m4/expl.m4 (gl_FUNC_EXPL): Likewise.
  * m4/expm1.m4 (gl_FUNC_EXPM1): Likewise.
  * m4/expm1f.m4 (gl_FUNC_EXPM1F): Likewise.
  * m4/expm1l.m4 (gl_FUNC_EXPM1L): Likewise.
  * m4/fclose.m4 (gl_FUNC_FCLOSE_STDIN): Likewise.
  * m4/fdopendir.m4 (gl_FUNC_FDOPENDIR): Likewise.
  * m4/ffsll.m4 (gl_FUNC_FFSLL): Likewise.
  * m4/floor.m4 (gl_FUNC_FLOOR): Likewise.
  * m4/floorf.m4 (gl_FUNC_FLOORF): Likewise.
  * m4/fmod.m4 (gl_FUNC_FMOD): Likewise.
  * m4/fmodf.m4 (gl_FUNC_FMODF): Likewise.
  * m4/fmodl.m4 (gl_FUNC_FMODL): Likewise.
  * m4/fnmatch.m4 (gl_FUNC_FNMATCH_POSIX): Likewise.
  * m4/fopen.m4 (gl_FUNC_FOPEN_GNU): Likewise.
  * m4/fpurge.m4 (gl_FUNC_FPURGE): Likewise.
  * m4/getdelim.m4 (gl_FUNC_GETDELIM): Likewise.
  * m4/getline.m4 (gl_FUNC_GETLINE): Likewise.
  * m4/hypot.m4 (gl_FUNC_HYPOT): Likewise.
  * m4/hypotf.m4 (gl_FUNC_HYPOTF): Likewise.
  * m4/hypotl.m4 (gl_FUNC_HYPOTL): Likewise.
  * m4/iconv_open-utf.m4 (gl_FUNC_ICONV_OPEN_UTF_SUPPORT): Likewise.
  * m4/log.m4 (gl_FUNC_LOG): Likewise.
  * m4/log10.m4 (gl_FUNC_LOG10): Likewise.
  * m4/log10f.m4 (gl_FUNC_LOG10F): Likewise.
  * m4/log10l.m4 (gl_FUNC_LOG10L_WORKS): Likewise.
  * m4/log1p.m4 (gl_FUNC_LOG1P): Likewise.
  * m4/log1pf.m4 (gl_FUNC_LOG1PF): Likewise.
  * m4/log1pl.m4 (gl_FUNC_LOG1PL, gl_FUNC_LOG1PL_WORKS): Likewise.
  * m4/log2.m4 (gl_FUNC_LOG2): Likewise.
  * m4/log2f.m4 (gl_FUNC_LOG2F): Likewise.
  * m4/log2l.m4 (gl_FUNC_LOG2L_WORKS): Likewise.
  * m4/logf.m4 (gl_FUNC_LOGF): Likewise.
  * m4/logl.m4 (gl_FUNC_LOGL_WORKS): Likewise.
  * m4/malloc.m4 (_AC_FUNC_MALLOC_IF): Likewise.
  * m4/mkstemp.m4 (gl_FUNC_MKSTEMP): Likewise.
  * m4/modf.m4 (gl_FUNC_MODF): Likewise.
  * m4/modff.m4 (gl_FUNC_MODFF): Likewise.
  * m4/modfl.m4 (gl_FUNC_MODFL): Likewise.
  * m4/musl.m4 (gl_MUSL_LIBC): Likewise.
  * m4/perror.m4 (gl_FUNC_PERROR): Likewise.
  * m4/posix_spawn.m4 (gl_POSIX_SPAWN_SECURE,
  gl_FUNC_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE,
  gl_FUNC_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2,
  gl_FUNC_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN): Likewise.
  * m4/printf.m4 (gl_PRINTF_SIZES_C99, gl_PRINTF_INFINITE,
  gl_PRINTF_INFINITE_LONG_DOUBLE, gl_PRINTF_DIRECTIVE_A,
  gl_PRINTF_DIRECTIVE_F, gl_PRINTF_FLAG_ZERO, gl_SNPRINTF_TRUNCATION_C99,
  gl_SNPRINTF_RETVAL_C99, gl_SNPRINTF_DIRECTIVE_N,
  gl_VSNPRINTF_ZEROSIZE_C99): Likewise.
  * m4/pthread_rwlock_rdlock.m4 (gl_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER):
  Likewise.
  * m4/putenv.m4 (gl_FUNC_PUTENV): Likewise.
  * m4/realloc.m4 (_AC_FUNC_REALLOC_IF): Likewise.
  * m4/remainder.m4 (gl_FUNC_REMAINDER): Likewise.
  * m4/remainderf.m4 (gl_FUNC_REMAINDERF): Likewise.
  * m4/remainderl.m4 (gl_FUNC_REMAINDERL, gl_FUNC_REMAINDERL_WORKS):
  Likewise.
  * m4/rintl.m4 (gl_FUNC_RINTL): Likewise.
  * m4/round.m4 (gl_FUNC_ROUND): Likewise.
  * m4/roundf.m4 (gl_FUNC_ROUNDF): Likewise.
  * m4/roundl.m4 (gl_FUNC_ROUNDL): Likewise.
  * m4/setenv.m4 (gl_FUNC_SETENV): Likewise.
  * m4/setlocale_null.m4 (gl_FUNC_SETLOCALE_NULL): Likewise.
  * m4/signbit.m4 (gl_SIGNBIT): Likewise.
  * m4/stpncpy.m4 (gl_FUNC_STPNCPY): Likewise.
  * m4/strerror.m4 (gl_FUNC_STRERROR, gl_FUNC_STRERROR_0): Likewise.
  * m4/strtod.m4 (gl_FUNC_STRTOD): Likewise.
  * m4/strtold.m4 (gl_FUNC_STRTOLD): Likewise.
  * m4/trunc.m4 (gl_FUNC_TRUNC): Likewise.
  * m4/truncf.m4 (gl_FUNC_TRUNCF): Likewise.
  * m4/truncl.m4 (gl_FUNC_TRUNCL): Likewise.
  * m4/ungetc.m4 (gl_FUNC_UNGETC_WORKS): Likewise.
  * m4/wcwidth.m4 (gl_FUNC_WCWIDTH): Likewise.
  

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• m4/fdopendir.m4

• # serial 15
  # See if we need to provide fdopendir.
  
  dnl Copyright (C) 2009-2023 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.
  
  # Written by Eric Blake.
  
  AC_DEFUN([gl_FUNC_FDOPENDIR],
  [
    AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
    AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
  
    AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
  
    dnl FreeBSD 7.3 has the function, but failed to declare it.
    AC_CHECK_DECLS([fdopendir], [], [HAVE_DECL_FDOPENDIR=0], [[
  #include <dirent.h>
      ]])
    AC_CHECK_FUNCS_ONCE([fdopendir])
    if test $ac_cv_func_fdopendir = no; then
      HAVE_FDOPENDIR=0
    else
      AC_CACHE_CHECK([whether fdopendir works],
        [gl_cv_func_fdopendir_works],
        [AC_RUN_IFELSE(
           [AC_LANG_PROGRAM([[
  #include <dirent.h>
  #include <fcntl.h>
  #include <unistd.h>
  ]GL_MDA_DEFINES[
  #if !HAVE_DECL_FDOPENDIR
  extern
  # ifdef __cplusplus
  "C"
  # endif
  DIR *fdopendir (int);
  #endif
  ]],
              [[int result = 0;
                int fd = open ("conftest.c", O_RDONLY);
                if (fd < 0) result |= 1;
                if (fdopendir (fd)) result |= 2;
                if (close (fd)) result |= 4;
                return result;
              ]])],
           [gl_cv_func_fdopendir_works=yes],
           [gl_cv_func_fdopendir_works=no],
           [case "$host_os" in
                                  # Guess yes on glibc systems.
              *-gnu*)             gl_cv_func_fdopendir_works="guessing yes" ;;
                                  # Guess yes on musl systems.
              *-musl* | midipix*) gl_cv_func_fdopendir_works="guessing yes" ;;
                                  # If we don't know, obey --enable-cross-guesses.
              *)                  gl_cv_func_fdopendir_works="$gl_cross_guess_normal" ;;
            esac
           ])])
      case "$gl_cv_func_fdopendir_works" in
        *yes) ;;
        *)
          REPLACE_FDOPENDIR=1
          ;;
      esac
    fi
  ])
  

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