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-rw-r--r--m4/write.m414
1 files changed, 8 insertions, 6 deletions
diff --git a/m4/write.m4 b/m4/write.m4
index fd46acc1..ecbdd225 100644
--- a/m4/write.m4
+++ b/m4/write.m4
@@ -1,5 +1,5 @@
-# write.m4 serial 5
-dnl Copyright (C) 2008-2017 Free Software Foundation, Inc.
+# write.m4 serial 6
+dnl Copyright (C) 2008-2018 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_WRITE],
[
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
- AC_REQUIRE([gl_MSVC_INVAL])
- if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
- REPLACE_WRITE=1
- fi
+ m4_ifdef([gl_MSVC_INVAL], [
+ AC_REQUIRE([gl_MSVC_INVAL])
+ if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+ REPLACE_WRITE=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_SIGPIPE or GNULIB_SIGPIPE redundant.