Check for C++ in configure

Recent GMP/GCC/GDB releases require c++. Signed-off-by: Alexey Neyman <stilor@att.net>
crosstool-ng · Feb 3, 2017 · df80f4e · df80f4e
1 parent 1baddb1
commit df80f4e
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/configure.ac b/configure.ac
@@ -186,8 +186,10 @@ AC_PROG_LN_S
 #--------------------------------------------------------------------
 # A bunch of boring tests...
 #--------------------------------------------------------------------
+# Modern GCC/GDB releases require C++ support in the compiler
 AC_PROG_CC
-AS_IF([test -z "$CC"],
+AC_PROG_CXX
+AS_IF([test -z "$CC" -o -z "$CXX"],
       [AC_MSG_ERROR([no suitable compiler found])])
 AC_PROG_CPP