building/porting.md

@@ -62,6 +62,8 @@ bootstrap the compiler on the *target* machine. We'll assume that you
 are porting to platform *plat*, e.g. *plat* may be
 `x86_64-unknown-linux`.
 
+**NOTE**: the path on the host and the target should be the same.
+
 **On the target machine**
 
 
@@ -174,6 +176,11 @@ Now build the compiler:
 <H>$ make
 ```
 
+**NOTE**: ./libraries/unix/dist-install/build/System/Posix/Files.hs
+gets filled with struct stat offsets and size for the host, not the
+target. This needs to be fixed by hand after make, and then run make
+again to generate Files.hc****
+
 
 You may need to work around problems that occur due to differences
 between the host and target platforms. You may also need to use `make -k`