Mercurial > hg > octave-nkf > gnulib-hg
changeset 15774:b5685d79081c
dup: Simplify autoconf test.
* m4/dup.m4 (gl_FUNC_DUP): Don't run a test program. Instead, just rely
on gl_MSVC_INVAL's result.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 24 Sep 2011 17:42:03 +0200 |
parents | 46baff75943d |
children | 89e7b0355fd3 |
files | ChangeLog m4/dup.m4 |
diffstat | 2 files changed, 11 insertions(+), 30 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2011-09-24 Bruno Haible <bruno@clisp.org> + + dup: Simplify autoconf test. + * m4/dup.m4 (gl_FUNC_DUP): Don't run a test program. Instead, just rely + on gl_MSVC_INVAL's result. + 2011-09-24 Bruno Haible <bruno@clisp.org> Tests for function fwrite().
--- a/m4/dup.m4 +++ b/m4/dup.m4 @@ -1,4 +1,4 @@ -# dup.m4 serial 1 +# dup.m4 serial 2 dnl Copyright (C) 2011 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -7,35 +7,10 @@ AC_DEFUN([gl_FUNC_DUP], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) - AC_REQUIRE([AC_CANONICAL_HOST]) - AC_CHECK_HEADERS_ONCE([unistd.h]) - AC_CACHE_CHECK([whether dup supports bad arguments], [gl_cv_func_dup_works], - [AC_RUN_IFELSE( - [AC_LANG_PROGRAM([[ -#if HAVE_UNISTD_H -# include <unistd.h> -#else -# include <io.h> -#endif -#include <errno.h> -]], - [[if (dup (-1) != -1) - return 1; - if (errno != EBADF) - return 2; - return 0; - ]])], - [gl_cv_func_dup_works=yes], - [gl_cv_func_dup_works=no], - [case "$host_os" in - mingw*) gl_cv_func_dup_works="guessing no" ;; - *) gl_cv_func_dup_works="guessing yes" ;; - esac - ]) - ]) - case "$gl_cv_func_dup_works" in - *no) REPLACE_DUP=1 ;; - esac + AC_REQUIRE([gl_MSVC_INVAL]) + if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then + REPLACE_DUP=1 + fi dnl Replace dup() for supporting the gnulib-defined fchdir() function, dnl to keep fchdir's bookkeeping up-to-date. m4_ifdef([gl_FUNC_FCHDIR], [