diff options
Diffstat (limited to 'gl/m4/lseek.m4')
-rw-r--r-- | gl/m4/lseek.m4 | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/gl/m4/lseek.m4 b/gl/m4/lseek.m4 deleted file mode 100644 index 627e772..0000000 --- a/gl/m4/lseek.m4 +++ /dev/null @@ -1,71 +0,0 @@ -# lseek.m4 serial 10 -dnl Copyright (C) 2007, 2009-2017 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_LSEEK], -[ - AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) - - AC_REQUIRE([AC_CANONICAL_HOST]) - AC_REQUIRE([AC_PROG_CC]) - AC_CHECK_HEADERS_ONCE([unistd.h]) - AC_CACHE_CHECK([whether lseek detects pipes], [gl_cv_func_lseek_pipe], - [case "$host_os" in - mingw*) - dnl Native Windows. - dnl The result of lseek (fd, (off_t)0, SEEK_CUR) or - dnl SetFilePointer(handle, 0, NULL, FILE_CURRENT) - dnl for a pipe depends on the environment: In a Cygwin 1.5 - dnl environment it succeeds (wrong); in a Cygwin 1.7 environment - dnl it fails with a wrong errno value. - gl_cv_func_lseek_pipe=no - ;; - *) - if test $cross_compiling = no; then - AC_LINK_IFELSE([AC_LANG_PROGRAM([[ -#include <sys/types.h> /* for off_t */ -#include <stdio.h> /* for SEEK_CUR */ -#if HAVE_UNISTD_H -# include <unistd.h> -#else /* on Windows with MSVC */ -# include <io.h> -#endif -]], [[ - /* Exit with success only if stdin is seekable. */ - return lseek (0, (off_t)0, SEEK_CUR) < 0; -]])], - [if test -s conftest$ac_exeext \ - && ./conftest$ac_exeext < conftest.$ac_ext \ - && test 1 = "`echo hi \ - | { ./conftest$ac_exeext; echo $?; cat >/dev/null; }`"; then - gl_cv_func_lseek_pipe=yes - else - gl_cv_func_lseek_pipe=no - fi - ], - [gl_cv_func_lseek_pipe=no]) - else - AC_COMPILE_IFELSE( - [AC_LANG_SOURCE([[ -#if defined __BEOS__ -/* BeOS mistakenly return 0 when trying to seek on pipes. */ - Choke me. -#endif]])], - [gl_cv_func_lseek_pipe=yes], [gl_cv_func_lseek_pipe=no]) - fi - ;; - esac - ]) - if test $gl_cv_func_lseek_pipe = no; then - REPLACE_LSEEK=1 - AC_DEFINE([LSEEK_PIPE_BROKEN], [1], - [Define to 1 if lseek does not detect pipes.]) - fi - - AC_REQUIRE([gl_SYS_TYPES_H]) - if test $WINDOWS_64_BIT_OFF_T = 1; then - REPLACE_LSEEK=1 - fi -]) |