Only use _DBUS_VA_COPY_ASSIGN to implement va_copy() on MSVC

We don't know that _DBUS_VA_COPY_ASSIGN is always the right choice.
However, we do know that it's OK on MSVC versions too old to support
va_copy().

Signed-off-by: Simon McVittie <smcv@collabora.com>

diff --git a/cmake/ConfigureChecks.cmake b/cmake/ConfigureChecks.cmake
index 04180322fa294d4902a4cc3c33894e942b4ac308..1144e93da750ce3bcb7a725a306b2eee93f580e0 100644 (file)
--- a/cmake/ConfigureChecks.cmake
+++ b/cmake/ConfigureChecks.cmake
@@ -117,10 +117,10 @@ if(HAVE_VA_COPY)
     set(DBUS_VA_COPY va_copy CACHE STRING "va_copy function")
 elseif(HAVE___VA_COPY)
     set(DBUS_VA_COPY __va_copy CACHE STRING "va_copy function")
-else()
+elseif(MSVC)
     # this is used for msvc < 2013
     set(DBUS_VA_COPY _DBUS_VA_COPY_ASSIGN)
-
+else()
     CHECK_C_SOURCE_RUNS("
     #include <stdarg.h>
     #include <stdlib.h>