configs/darwin: Set CXX to g++.
diff --git a/configs/darwin b/configs/darwin
index 29fa0f1..213c397 100644
--- a/configs/darwin
+++ b/configs/darwin
@@ -10,7 +10,7 @@
 
 # Compiler and flags
 CC = gcc
-CXX = gcc
+CXX = g++
 PIC_FLAGS = -fPIC
 DEFINES =  -D_DARWIN_C_SOURCE -D_POSIX_SOURCE -D_POSIX_C_SOURCE=199309L \
 	   -D_BSD_SOURCE -D_SVID_SOURCE -D_GNU_SOURCE -DPTHREADS \