added header files to _SOURCES.

platform/Makefile.am

@@ -2,12 +2,19 @@
 NULL =
 DEPTH = ..
 
+# FIXME -- add CUnixPlatform.cpp as an unbuilt source
 noinst_LIBRARIES = libplatform.a
 libplatform_a_SOURCES = 	\
 	CPlatform.cpp			\
 	CXWindowsClipboard.cpp	\
 	CXWindowsScreen.cpp		\
 	CXWindowsUtil.cpp		\
+	CPlatform.h				\
+	CUnixPlatform.h			\
+	CXWindowsClipboard.h	\
+	CXWindowsScreen.h		\
+	CXWindowsUtil.h			\
+	IPlatform.h				\
 	$(NULL)
 INCLUDES =					\
 	-I$(DEPTH)/base 		\