diff -urN scilab-5.1.1-orig/modules/pvm/Makefile.am scilab-5.1.1/modules/pvm/Makefile.am
--- scilab-5.1.1-orig/modules/pvm/Makefile.am	2009-06-17 00:00:40.000000000 -0400
+++ scilab-5.1.1/modules/pvm/Makefile.am	2009-06-17 00:16:01.000000000 -0400
@@ -50,7 +50,7 @@
 sci_gateway/c/sci_pvm_recv_var.c \
 sci_gateway/c/sci_pvm_exit.c
 
-libscipvm_la_CFLAGS=  -I$(srcdir)/includes/ -I$(top_srcdir)/libs/MALLOC/includes/ -I$(srcdir)/src/c/  -I$(top_srcdir)/modules/output_stream/includes/
+libscipvm_la_CFLAGS=  -I$(srcdir)/includes/ -I$(top_srcdir)/libs/MALLOC/includes/ -I$(srcdir)/src/c/  -I$(top_srcdir)/modules/output_stream/includes/ $(PVM_INCLUDE)
 
 pkglib_LTLIBRARIES = libscipvm.la