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Diffstat (limited to 'src/gl/m4/ftello.m4')
-rw-r--r-- | src/gl/m4/ftello.m4 | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/src/gl/m4/ftello.m4 b/src/gl/m4/ftello.m4 deleted file mode 100644 index 3f4808bf37..0000000000 --- a/src/gl/m4/ftello.m4 +++ /dev/null @@ -1,140 +0,0 @@ -# ftello.m4 serial 11 -dnl Copyright (C) 2007-2016 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_FTELLO], -[ - AC_REQUIRE([gl_STDIO_H_DEFAULTS]) - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([gl_STDIN_LARGE_OFFSET]) - AC_REQUIRE([gl_SYS_TYPES_H]) - - dnl Persuade glibc <stdio.h> to declare ftello(). - AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) - - AC_CHECK_DECLS_ONCE([ftello]) - if test $ac_cv_have_decl_ftello = no; then - HAVE_DECL_FTELLO=0 - fi - - AC_CACHE_CHECK([for ftello], [gl_cv_func_ftello], - [ - AC_LINK_IFELSE( - [AC_LANG_PROGRAM( - [[#include <stdio.h>]], - [[ftello (stdin);]])], - [gl_cv_func_ftello=yes], - [gl_cv_func_ftello=no]) - ]) - if test $gl_cv_func_ftello = no; then - HAVE_FTELLO=0 - else - if test $WINDOWS_64_BIT_OFF_T = 1; then - REPLACE_FTELLO=1 - fi - if test $gl_cv_var_stdin_large_offset = no; then - REPLACE_FTELLO=1 - fi - if test $REPLACE_FTELLO = 0; then - dnl Detect bug on Solaris. - dnl ftell and ftello produce incorrect results after putc that followed a - dnl getc call that reached EOF on Solaris. This is because the _IOREAD - dnl flag does not get cleared in this case, even though _IOWRT gets set, - dnl and ftell and ftello look whether the _IOREAD flag is set. - AC_REQUIRE([AC_CANONICAL_HOST]) - AC_CACHE_CHECK([whether ftello works], - [gl_cv_func_ftello_works], - [ - dnl Initial guess, used when cross-compiling or when /dev/tty cannot - dnl be opened. -changequote(,)dnl - case "$host_os" in - # Guess no on Solaris. - solaris*) gl_cv_func_ftello_works="guessing no" ;; - # Guess yes otherwise. - *) gl_cv_func_ftello_works="guessing yes" ;; - esac -changequote([,])dnl - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#define TESTFILE "conftest.tmp" -int -main (void) -{ - FILE *fp; - - /* Create a file with some contents. */ - fp = fopen (TESTFILE, "w"); - if (fp == NULL) - return 70; - if (fwrite ("foogarsh", 1, 8, fp) < 8) - return 71; - if (fclose (fp)) - return 72; - - /* The file's contents is now "foogarsh". */ - - /* Try writing after reading to EOF. */ - fp = fopen (TESTFILE, "r+"); - if (fp == NULL) - return 73; - if (fseek (fp, -1, SEEK_END)) - return 74; - if (!(getc (fp) == 'h')) - return 1; - if (!(getc (fp) == EOF)) - return 2; - if (!(ftell (fp) == 8)) - return 3; - if (!(ftell (fp) == 8)) - return 4; - if (!(putc ('!', fp) == '!')) - return 5; - if (!(ftell (fp) == 9)) - return 6; - if (!(fclose (fp) == 0)) - return 7; - fp = fopen (TESTFILE, "r"); - if (fp == NULL) - return 75; - { - char buf[10]; - if (!(fread (buf, 1, 10, fp) == 9)) - return 10; - if (!(memcmp (buf, "foogarsh!", 9) == 0)) - return 11; - } - if (!(fclose (fp) == 0)) - return 12; - - /* The file's contents is now "foogarsh!". */ - - return 0; -}]])], - [gl_cv_func_ftello_works=yes], - [gl_cv_func_ftello_works=no], [:]) - ]) - case "$gl_cv_func_ftello_works" in - *yes) ;; - *) - REPLACE_FTELLO=1 - AC_DEFINE([FTELLO_BROKEN_AFTER_SWITCHING_FROM_READ_TO_WRITE], [1], - [Define to 1 if the system's ftello function has the Solaris bug.]) - ;; - esac - fi - fi -]) - -# Prerequisites of lib/ftello.c. -AC_DEFUN([gl_PREREQ_FTELLO], -[ - dnl Native Windows has the function _ftelli64. mingw hides it, but mingw64 - dnl makes it usable again. - AC_CHECK_FUNCS([_ftelli64]) -]) |