[Qemu-devel] [PATCH] configure: Handle having no c++ compiler in FORTIFY_SOURCE check

[Peter Maydell]

Our FORTIFY_SOURCE check assumes that $cxx refers to a working C++
compiler, with the result that if you don't happen to have one
then configure will spuriously print
  configure: line 4685: c++: command not found

Fix this by adding a 'has $cxx' check.

Signed-off-by: Peter Maydell <address@hidden>
---
 configure | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure b/configure
index c571ad1..a435908 100755
--- a/configure
+++ b/configure
@@ -4681,7 +4681,7 @@ fi
 if test "$fortify_source" != "no"; then
   if echo | $cc -dM -E - | grep __clang__ > /dev/null 2>&1 ; then
     fortify_source="no";
-  elif test -n "$cxx" &&
+  elif test -n "$cxx" && has $cxx &&
        echo | $cxx -dM -E - | grep __clang__ >/dev/null 2>&1 ; then
     fortify_source="no";
   else
-- 
2.7.4