[Ping] Port of VTV for Cygwin and MinGW

[H.J. Lu]

On Thu, Jan 29, 2015 at 10:13 AM, H.J. Lu <hjl.tools@gmail.com> wrote:
> On Thu, Jan 29, 2015 at 10:11 AM, Jonathan Wakely <jwakely@redhat.com> wrote:
>> On 29/01/15 19:05 +0100, Matthias Klose wrote:
>>>
>>> that fixes the build failure. ok to commit?
>>>
>>> 2015-01-29  Matthias Klose  <doko@ubuntu.com>
>>>
>>>        * acinclude.m4 (GLIBCXX_ENABLE_VTABLE_VERIFY): Define VTV_CYGMIN
>>>        unconditionally.
>>>        * configure: Regenerate.
>>
>>
>> OK, thanks.
>>
>
> It is NOT OK.
>

This patch checks vtv_cygmin after it is defined.  I will
check it in as an obvious fix after testing.


-- 
H.J.
---
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index 59df22d..02ca3f3 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -2331,7 +2331,6 @@ AC_DEFUN([GLIBCXX_ENABLE_VTABLE_VERIFY], [
         vtv_cygmin="no"
         ;;
     esac
-    AM_CONDITIONAL(VTV_CYGMIN, test $vtv_cygmin = yes)
     VTV_PCH_CXXFLAGS="-fvtable-verify=std"
     VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,--rpath
-Wl,${toplevel_builddir}/libvtv/.libs"
   else
@@ -2340,6 +2339,8 @@ AC_DEFUN([GLIBCXX_ENABLE_VTABLE_VERIFY], [
     VTV_CXXLINKFLAGS=
   fi

+  AM_CONDITIONAL(VTV_CYGMIN, test $vtv_cygmin = yes)
+
   AC_SUBST(VTV_CXXFLAGS)
   AC_SUBST(VTV_PCH_CXXFLAGS)
   AC_SUBST(VTV_CXXLINKFLAGS)