AT_DATA([main.cc],
[AT_DATA_SOURCE_PROLOGUE
-[extern "C"
+[// If we are compiling with CC=$CXX, then do not load the C headers
+// inside extern "C", since they were _not_ compiled this way.
+#if ! CC_IS_CXX
+extern "C"
{
+#endif
#include "x1.h"
#include "x2.h"
#include "x3.h"
#include "x6.h"
#include "x7.h"
#include "x8.h"
+#if ! CC_IS_CXX
}
+#endif
#include "x5.hh"
//#include "x6.hh"
AT_TEST([x8], [%define api.pure %define api.push-pull both])
#AT_TEST([x5], [%locations %language "c++" %glr-parser])
-AT_COMPILE_CXX([parser], [[x[1-8].o main.cc]])
+AT_COMPILE_CXX([parser], [[x[1-8].o -DCC_IS_CXX=$CC_IS_CXX main.cc]])
AT_CHECK([./parser], [0], [[expout]])
m4_popdef([AT_TEST])