diff --git a/Makefile.am.newautomake b/Makefile.am.newautomake
index 5c556b2..6e9c852 100644
--- a/Makefile.am.newautomake
+++ b/Makefile.am.newautomake
@@ -86,11 +86,13 @@ EXTRA_DIST =	\
 	platform/macclassic.c  \
 	platform/win32.c       \
 	platform/beos.cpp      \
+	platform/os2.c         \
     extras/physfsrwops.h   \
     extras/physfsrwops.c   \
     extras/physfshttpd.c   \
 	Makefile.am.oldautomake \
 	Makefile.am.newautomake \
+    makeos2.cmd             \
     $(ZLIB_EXTRADIST) $(BEOS_EXTRADIST) $(TEST_EXTRADIST)
 
 else
@@ -126,7 +128,8 @@ EXTRA_DIST =	\
 	CWProjects.sit \
 	physfs.spec \
 	physfs.dsp \
-	test_physfs.dsp
+	test_physfs.dsp \
+	makeos2.cmd
 
 
 endif
diff --git a/Makefile.am.oldautomake b/Makefile.am.oldautomake
index 387bf15..b8ce67f 100644
--- a/Makefile.am.oldautomake
+++ b/Makefile.am.oldautomake
@@ -35,7 +35,8 @@ EXTRA_DIST =	\
 	CWProjects.sit \
 	physfs.spec \
 	physfs.dsp \
-	test_physfs.dsp
+	test_physfs.dsp \
+	makeos2.cmd
 
 dist-hook:
 	mkdir $(distdir)/docs
diff --git a/platform/Makefile.am b/platform/Makefile.am
index afd8638..7dc4785 100644
--- a/platform/Makefile.am
+++ b/platform/Makefile.am
@@ -10,7 +10,8 @@ else
 libplatform_la_SOURCES =	\
 	unix.c                  \
 	win32.c                 \
-	posix.c
+	posix.c                 \
+	os2.c
 endif
 
 
@@ -19,5 +20,6 @@ EXTRA_DIST =      \
 	macclassic.c  \
 	win32.c       \
 	unix.c        \
+	os2.c         \
     beos.cpp