getline.m4

Show log
Commit

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.

Download

m4/getline.m4

# getline.m4 serial 33

dnl Copyright (C) 1998-2003, 2005-2007, 2009-2023 Free Software Foundation,
dnl Inc.
dnl
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_PREREQ([2.59])

dnl See if there's a working, system-supplied version of the getline function.
dnl We can't just do AC_REPLACE_FUNCS([getline]) because some systems
dnl have a function by that name in -linet that doesn't have anything
dnl to do with the function we need.
AC_DEFUN([gl_FUNC_GETLINE],
[
  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

  dnl Persuade glibc <stdio.h> to declare getline().
  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

  AC_CHECK_DECLS_ONCE([getline])

  gl_CHECK_FUNCS_ANDROID([getline], [[#include <stdio.h>]])
  if test $ac_cv_func_getline = yes; then
    dnl Found it in some library.  Verify that it works.
    AC_CACHE_CHECK([for working getline function],
      [am_cv_func_working_getline],
      [echo fooNbarN | tr -d '\012' | tr N '\012' > conftest.data
       AC_RUN_IFELSE([AC_LANG_SOURCE([[
#    include <stdio.h>
#    include <stdlib.h>
#    include <string.h>
    int main ()
    {
      FILE *in = fopen ("./conftest.data", "r");
      if (!in)
        return 1;
      {
        /* Test result for a NULL buffer and a zero size.
           Based on a test program from Karl Heuer.  */
        char *line = NULL;
        size_t siz = 0;
        int len = getline (&line, &siz, in);
        if (!(len == 4 && line && strcmp (line, "foo\n") == 0))
          { free (line); fclose (in); return 2; }
        free (line);
      }
      {
        /* Test result for a NULL buffer and a non-zero size.
           This crashes on FreeBSD 8.0.  */
        char *line = NULL;
        size_t siz = (size_t)(~0) / 4;
        if (getline (&line, &siz, in) == -1)
          { fclose (in); return 3; }
        free (line);
      }
      fclose (in);
      return 0;
    }
    ]])],
         [am_cv_func_working_getline=yes],
         [am_cv_func_working_getline=no],
         [dnl We're cross compiling.
          dnl Guess it works on glibc2 systems and musl systems.
          AC_EGREP_CPP([Lucky GNU user],
            [
#include <features.h>
#ifdef __GNU_LIBRARY__
 #if (__GLIBC__ >= 2) && !defined __UCLIBC__
  Lucky GNU user
 #endif
#endif
            ],
            [am_cv_func_working_getline="guessing yes"],
            [case "$host_os" in
               *-musl* | midipix*) am_cv_func_working_getline="guessing yes" ;;
               *)                  am_cv_func_working_getline="$gl_cross_guess_normal" ;;
             esac
            ])
         ])
      ])
  else
    am_cv_func_working_getline=no
    case "$gl_cv_onwards_func_getline" in
      future*) REPLACE_GETLINE=1 ;;
    esac
  fi

  if test $ac_cv_have_decl_getline = no; then
    HAVE_DECL_GETLINE=0
  fi

  case "$am_cv_func_working_getline" in
    *yes) ;;
    *)
      dnl Set REPLACE_GETLINE always: Even if we have not found the broken
      dnl getline function among $LIBS, it may exist in libinet and the
      dnl executable may be linked with -linet.
      REPLACE_GETLINE=1
      ;;
  esac
])

# Prerequisites of lib/getline.c.
AC_DEFUN([gl_PREREQ_GETLINE],
[
  :
])

Download

kc3-lang/gnulib/m4/getline.m4

Commit

m4/getline.m4