don't use -Wmissing-prototypes for C++ code
diff --git a/configs/linux b/configs/linux
index 0ffc1bc..2526bb7 100644
--- a/configs/linux
+++ b/configs/linux
@@ -8,7 +8,6 @@
 CC = gcc
 CXX = g++
 
-WARN_FLAGS = -Wall -Wmissing-prototypes
 OPT_FLAGS  = -O3 -g
 PIC_FLAGS  = -fPIC
 
@@ -22,10 +21,10 @@
 
 X11_INCLUDES = -I/usr/X11R6/include
 
-CFLAGS   = $(WARN_FLAGS) $(OPT_FLAGS) $(PIC_FLAGS) $(ARCH_FLAGS) $(DEFINES) \
-	$(ASM_FLAGS) $(X11_INCLUDES) -std=c99 -ffast-math 
+CFLAGS = -Wall -Wmissing-prototypes $(OPT_FLAGS) $(PIC_FLAGS) $(ARCH_FLAGS) \
+	$(DEFINES) $(ASM_FLAGS) $(X11_INCLUDES) -std=c99 -ffast-math 
 
-CXXFLAGS = $(WARN_FLAGS) $(OPT_FLAGS) $(PIC_FLAGS) $(ARCH_FLAGS) $(DEFINES) \
+CXXFLAGS = -Wall $(OPT_FLAGS) $(PIC_FLAGS) $(ARCH_FLAGS) $(DEFINES) \
 	$(X11_INCLUDES) 
 
 GLUT_CFLAGS = -fexceptions