diff --git a/src/Makefile.am b/src/Makefile.am
index c17505ce..6174431f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -104,15 +104,17 @@ libunwind_la_SOURCES_ia64_common = $(libunwind_la_SOURCES_common)	    \
 	ia64/ucontext_i.h ia64/unwind_decoder.h ia64/unwind_i.h		    \
 	ia64/regname-ia64.c
 
+if OS_LINUX
+  #  _ReadULEB()/_ReadSLEB() are needed for Intel C++ 8.0 compatibility
+ libunwind_la_SOURCES_ia64_os = mi/_ReadULEB.c mi/_ReadSLEB.c
+endif
+
 # The list of files that go into libunwind:
-#  _ReadULEB()/_ReadSLEB() are needed for Intel C++ 8.0 compatibility
 libunwind_la_SOURCES_ia64 = $(libunwind_la_SOURCES_ia64_common)		   \
-	$(libunwind_la_SOURCES_local)					   \
+	$(libunwind_la_SOURCES_local) $(libunwind_la_SOURCES_ia64_os)	   \
 									   \
 	elf64.c elf64.h							   \
 									   \
-	mi/_ReadULEB.c mi/_ReadSLEB.c					   \
-									   \
 	ia64/dyn_info_list-ia64.S ia64/getcontext-ia64.S		   \
 									   \
 	ia64/Lcreate_addr_space-ia64.c					   \