diff --git a/Makefile.am b/Makefile.am
index d3d3bc5..dbc4361 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,6 +1,6 @@
 lib_LTLIBRARIES = libphysfs.la
 
-SUBDIRS = platform archivers zlib114 . test
+SUBDIRS = platform archivers zlib114 . test extras
 
 libphysfsincludedir = $(includedir)
 libphysfsinclude_HEADERS =	\
diff --git a/configure.in b/configure.in
index 2c23c1d..928f782 100644
--- a/configure.in
+++ b/configure.in
@@ -210,4 +210,6 @@ platform/Makefile
 archivers/Makefile
 test/Makefile
 zlib114/Makefile
+extras/Makefile
 ])
+
diff --git a/platform/Makefile.am b/platform/Makefile.am
index 4d1e395..f492ca4 100644
--- a/platform/Makefile.am
+++ b/platform/Makefile.am
@@ -3,5 +3,12 @@ noinst_LTLIBRARIES = libplatform.la
 INCLUDES = -I$(top_srcdir)
 
 libplatform_la_SOURCES =	\
-	unix.c
+	unix.c                  \
+	beos.cpp
+
+EXTRA_DIST =      \
+	skeleton.c    \
+	macclassic.c  \
+	win32.c
+