X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=m4%2Fisnanf.m4;h=c0dcdb74c0a8cad76dcc957d85e735295d476d55;hb=92249085071a973e2c0621b0415b93d2e48bb00d;hp=97f638a93492bd5af60f2d12fb12e7d883f938a7;hpb=dc84183747ce1703eb99685b5dbde1f65a143c06;p=debian%2Fgzip

diff --git a/m4/isnanf.m4 b/m4/isnanf.m4
index 97f638a..c0dcdb7 100644
--- a/m4/isnanf.m4
+++ b/m4/isnanf.m4
@@ -1,5 +1,5 @@
-# isnanf.m4 serial 14
-dnl Copyright (C) 2007-2012 Free Software Foundation, Inc.
+# isnanf.m4 serial 15
+dnl Copyright (C) 2007-2018 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.
@@ -180,8 +180,17 @@ int main()
         [gl_cv_func_isnanf_works=yes],
         [gl_cv_func_isnanf_works=no],
         [case "$host_os" in
-           irix* | solaris*) gl_cv_func_isnanf_works="guessing no";;
-           *)                gl_cv_func_isnanf_works="guessing yes";;
+           irix* | solaris*) gl_cv_func_isnanf_works="guessing no" ;;
+           mingw*) # Guess yes on mingw, no on MSVC.
+             AC_EGREP_CPP([Known], [
+#ifdef __MINGW32__
+ Known
+#endif
+               ],
+               [gl_cv_func_isnanf_works="guessing yes"],
+               [gl_cv_func_isnanf_works="guessing no"])
+             ;;
+           *) gl_cv_func_isnanf_works="guessing yes" ;;
          esac
         ])
     ])