kc3-lang/gnulib/m4/fpurge.m4
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Hash : 86a9695e
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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/fpurge.m4
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# fpurge.m4 serial 14 dnl Copyright (C) 2007, 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. AC_DEFUN([gl_FUNC_FPURGE], [ AC_REQUIRE([gl_STDIO_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_HEADERS_ONCE([stdio_ext.h]) AC_CHECK_FUNCS_ONCE([fpurge]) gl_CHECK_FUNCS_ANDROID([__fpurge], [[#include <stdio_ext.h>]]) AC_CHECK_DECLS([fpurge], , , [[#include <stdio.h>]]) if test "x$ac_cv_func_fpurge" = xyes; then HAVE_FPURGE=1 # Detect BSD bug. Only cygwin 1.7 and musl are known to be immune. AC_CACHE_CHECK([whether fpurge works], [gl_cv_func_fpurge_works], [AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include <stdio.h> ]], [[FILE *f = fopen ("conftest.txt", "w+"); if (!f) return 1; if (fputc ('a', f) != 'a') { fclose (f); return 2; } rewind (f); if (fgetc (f) != 'a') { fclose (f); return 3; } if (fgetc (f) != EOF) { fclose (f); return 4; } if (fpurge (f) != 0) { fclose (f); return 5; } if (putc ('b', f) != 'b') { fclose (f); return 6; } if (fclose (f) != 0) return 7; if ((f = fopen ("conftest.txt", "r")) == NULL) return 8; if (fgetc (f) != 'a') { fclose (f); return 9; } if (fgetc (f) != 'b') { fclose (f); return 10; } if (fgetc (f) != EOF) { fclose (f); return 11; } if (fclose (f) != 0) return 12; if (remove ("conftest.txt") != 0) return 13; return 0; ]])], [gl_cv_func_fpurge_works=yes], [gl_cv_func_fpurge_works=no], [case "$host_os" in # Guess yes on musl systems. *-musl* | midipix*) gl_cv_func_fpurge_works="guessing yes" ;; # Otherwise obey --enable-cross-guesses. *) gl_cv_func_fpurge_works="$gl_cross_guess_normal" ;; esac ]) ]) case "$gl_cv_func_fpurge_works" in *yes) ;; *) REPLACE_FPURGE=1 ;; esac else HAVE_FPURGE=0 fi if test "x$ac_cv_have_decl_fpurge" = xno; then HAVE_DECL_FPURGE=0 fi ])