kc3-lang/gnulib/m4/perror.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/perror.m4

• # perror.m4 serial 12
  dnl Copyright (C) 2008-2023 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.
  
  AC_DEFUN([gl_FUNC_PERROR],
  [
    AC_REQUIRE([gl_STDIO_H_DEFAULTS])
    AC_REQUIRE([gl_HEADER_ERRNO_H])
    AC_REQUIRE([gl_FUNC_STRERROR_R])
    AC_REQUIRE([gl_FUNC_STRERROR_0])
    AC_REQUIRE([AC_CANONICAL_HOST])
    dnl We intentionally do not check for the broader REPLACE_STRERROR_R,
    dnl since on glibc systems, strerror_r is replaced only for signature
    dnl issues, and perror is just fine.  Rather, we only want to
    dnl replace perror if strerror_r was replaced for a content fix.
    if test "$GL_GENERATE_ERRNO_H:$REPLACE_STRERROR_0" != false:0; then
      dnl The system's perror() cannot know about the new errno values we add
      dnl to <errno.h>, or any fix for strerror(0). Replace it.
      REPLACE_PERROR=1
    fi
    case ${gl_cv_func_strerror_r_works-unset} in
      unset|*yes)
        AC_CACHE_CHECK([whether perror matches strerror],
          [gl_cv_func_perror_works],
          [AC_RUN_IFELSE(
             [AC_LANG_PROGRAM(
                [[#include <errno.h>
                  #include <stdio.h>
                  #include <stdlib.h>
                  #include <string.h>
                ]],
                [[char *str = strerror (-1);
                  if (!getenv("CONFTEST_OUTPUT")) return 0;
                  if (!str) str = "";
                  puts (str);
                  errno = -1;
                  perror ("");
                  return 0;
                ]])],
             [if CONFTEST_OUTPUT=1 ./conftest$EXEEXT >conftest.txt1 2>conftest.txt2 \
                 && cmp conftest.txt1 conftest.txt2 >/dev/null; then
                gl_cv_func_perror_works=yes
              else
                gl_cv_func_perror_works=no
              fi
              rm -rf conftest.txt1 conftest.txt2],
             [gl_cv_func_perror_works=no],
             [case "$host_os" in
                                    # Guess yes on musl systems.
                *-musl* | midipix*) gl_cv_func_perror_works="guessing yes" ;;
                                    # Guess yes on native Windows.
                mingw*)             gl_cv_func_perror_works="guessing yes" ;;
                                    # Otherwise obey --enable-cross-guesses.
                *)                  gl_cv_func_perror_works="$gl_cross_guess_normal" ;;
              esac
             ])
          ])
        case "$gl_cv_func_perror_works" in
          *yes) ;;
          *) REPLACE_PERROR=1 ;;
        esac
        ;;
      *)
        dnl The system's perror() probably inherits the bugs in the
        dnl system's strerror_r(). Replace it.
        REPLACE_PERROR=1
        ;;
    esac
    dnl Does perror clobber the strerror buffer?
    case "$host_os" in
                       # Yes on Android 11.
      linux*-android*) REPLACE_PERROR=1 ;;
    esac
  ])
  

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