--- file_not_specified_in_diff	
+++ file_not_specified_in_diff	
@@ -, +, @@ 
--- IlmBase/IlmThread/Makefile.am
+++ IlmBase/IlmThread/Makefile.am
@@ -14,7 +14,7 @@ 
 if LIB_SUFFIX_EXISTS
 libIlmThread_la_LDFLAGS += -release @LIB_SUFFIX@
 endif
-libIlmThread_la_LIBADD = ../Iex/libIex.la
+libIlmThread_la_LIBADD = ../Iex/libIex.la -lpthread
 
 libIlmThreadincludedir = $(includedir)/OpenEXR