X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=m4%2Ffrexp.m4;h=33e07f598b8c60c5c000de96255b6e01eaa1ed4a;hb=92249085071a973e2c0621b0415b93d2e48bb00d;hp=2eb98a1dcdc13c6474d9f562f365d89c49a38d16;hpb=d738e90e8360e101b94fca8c79147f59565f62d8;p=debian%2Fgzip

diff --git a/m4/frexp.m4 b/m4/frexp.m4
index 2eb98a1..33e07f5 100644
--- a/m4/frexp.m4
+++ b/m4/frexp.m4
@@ -1,5 +1,5 @@
-# frexp.m4 serial 15
-dnl Copyright (C) 2007-2013 Free Software Foundation, Inc.
+# frexp.m4 serial 16
+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.
@@ -164,8 +164,17 @@ int main()
         [gl_cv_func_frexp_works=yes],
         [gl_cv_func_frexp_works=no],
         [case "$host_os" in
-           netbsd* | irix* | mingw*) gl_cv_func_frexp_works="guessing no";;
-           *)                        gl_cv_func_frexp_works="guessing yes";;
+           netbsd* | irix*) gl_cv_func_frexp_works="guessing no" ;;
+           mingw*) # Guess yes with MSVC, no with mingw.
+             AC_EGREP_CPP([Good], [
+#ifdef _MSC_VER
+ Good
+#endif
+               ],
+               [gl_cv_func_frexp_works="guessing yes"],
+               [gl_cv_func_frexp_works="guessing no"])
+             ;;
+           *) gl_cv_func_frexp_works="guessing yes" ;;
          esac
         ])
     ])