diff options
Diffstat (limited to 'm4/read.m4')
| -rw-r--r-- | m4/read.m4 | 14 |
1 files changed, 8 insertions, 6 deletions
@@ -1,5 +1,5 @@ -# read.m4 serial 4 -dnl Copyright (C) 2011-2017 Free Software Foundation, Inc. +# read.m4 serial 5 +dnl Copyright (C) 2011-2018 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. @@ -7,10 +7,12 @@ dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_READ], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) - AC_REQUIRE([gl_MSVC_INVAL]) - if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then - REPLACE_READ=1 - fi + m4_ifdef([gl_MSVC_INVAL], [ + AC_REQUIRE([gl_MSVC_INVAL]) + if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then + REPLACE_READ=1 + fi + ]) dnl This ifdef is just an optimization, to avoid performing a configure dnl check whose result is not used. It does not make the test of dnl GNULIB_UNISTD_H_NONBLOCKING or GNULIB_NONBLOCKING redundant. |