X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=m4%2Ffpending.m4;fp=m4%2Ffpending.m4;h=33a5c94c3a3732abfda755f55670c19a889e6bab;hb=dc84183747ce1703eb99685b5dbde1f65a143c06;hp=09ae7e3febe6c7c4058b829a220267bda12d9371;hpb=a2016c1de6e4884f6c8ed5cc498f3bf821c25ca4;p=debian%2Fgzip diff --git a/m4/fpending.m4 b/m4/fpending.m4 index 09ae7e3..33a5c94 100644 --- a/m4/fpending.m4 +++ b/m4/fpending.m4 @@ -1,6 +1,6 @@ -# serial 15 +# serial 19 -# Copyright (C) 2000-2001, 2004-2010 Free Software Foundation, Inc. +# Copyright (C) 2000-2001, 2004-2012 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. @@ -24,60 +24,67 @@ AC_DEFUN([gl_FUNC_FPENDING], # endif ' AC_CHECK_DECLS([__fpending], , , $fp_headers) - if test $ac_cv_func___fpending = no; then - AC_CACHE_CHECK( +]) + +AC_DEFUN([gl_PREREQ_FPENDING], +[ + AC_CACHE_CHECK( [how to determine the number of pending output bytes on a stream], - ac_cv_sys_pending_output_n_bytes, - [ - for ac_expr in \ - \ - '# glibc2' \ - 'fp->_IO_write_ptr - fp->_IO_write_base' \ - \ - '# traditional Unix' \ - 'fp->_ptr - fp->_base' \ - \ - '# BSD' \ - 'fp->_p - fp->_bf._base' \ - \ - '# SCO, Unixware' \ - '(fp->__ptr ? fp->__ptr - fp->__base : 0)' \ - \ - '# QNX' \ - '(fp->_Mode & 0x2000 /*_MWRITE*/ ? fp->_Next - fp->_Buf : 0)' \ - \ - '# old glibc?' \ - 'fp->__bufp - fp->__buffer' \ - \ - '# old glibc iostream?' \ - 'fp->_pptr - fp->_pbase' \ - \ - '# emx+gcc' \ - 'fp->_ptr - fp->_buffer' \ - \ - '# VMS' \ - '(*fp)->_ptr - (*fp)->_base' \ - \ - '# e.g., DGUX R4.11; the info is not available' \ - 1 \ - ; do + ac_cv_sys_pending_output_n_bytes, + [ + for ac_expr in \ + \ + '# glibc2' \ + 'fp->_IO_write_ptr - fp->_IO_write_base' \ + \ + '# traditional Unix' \ + 'fp->_ptr - fp->_base' \ + \ + '# BSD' \ + 'fp->_p - fp->_bf._base' \ + \ + '# SCO, Unixware' \ + '(fp->__ptr ? fp->__ptr - fp->__base : 0)' \ + \ + '# QNX' \ + '(fp->_Mode & 0x2000 /*_MWRITE*/ ? fp->_Next - fp->_Buf : 0)' \ + \ + '# old glibc?' \ + 'fp->__bufp - fp->__buffer' \ + \ + '# old glibc iostream?' \ + 'fp->_pptr - fp->_pbase' \ + \ + '# emx+gcc' \ + 'fp->_ptr - fp->_buffer' \ + \ + '# Minix' \ + 'fp->_ptr - fp->_buf' \ + \ + '# Plan9' \ + 'fp->wp - fp->buf' \ + \ + '# VMS' \ + '(*fp)->_ptr - (*fp)->_base' \ + \ + '# e.g., DGUX R4.11; the info is not available' \ + 1 \ + ; do - # Skip each embedded comment. - case "$ac_expr" in '#'*) continue;; esac + # Skip each embedded comment. + case "$ac_expr" in '#'*) continue;; esac - AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], - [[FILE *fp = stdin; (void) ($ac_expr);]])], - [fp_done=yes] - ) - test "$fp_done" = yes && break - done + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], + [[FILE *fp = stdin; (void) ($ac_expr);]])], + [fp_done=yes] + ) + test "$fp_done" = yes && break + done - ac_cv_sys_pending_output_n_bytes=$ac_expr - ] - ) - AC_DEFINE_UNQUOTED([PENDING_OUTPUT_N_BYTES], - $ac_cv_sys_pending_output_n_bytes, - [the number of pending output bytes on stream `fp']) - AC_LIBOBJ([fpending]) - fi + ac_cv_sys_pending_output_n_bytes=$ac_expr + ] + ) + AC_DEFINE_UNQUOTED([PENDING_OUTPUT_N_BYTES], + $ac_cv_sys_pending_output_n_bytes, + [the number of pending output bytes on stream 'fp']) ])