r241742 - in /trunk: gcc/go/gofrontend/MERGE li...

[ian@gcc.gnu.org]

Author: ian
Date: Tue Nov  1 13:54:21 2016
New Revision: 241742

URL: https://gcc.gnu.org/viewcvs?rev=241742&root=gcc&view=rev
Log:
    libgo: only rebuild package if dependent .gox has changed
    
    Use mvifdiff and stamp files to track whether a .gox file has changed.
    When package A depends on package B, and we rebuild package B, only
    rebuild package A if package B's .gox file changes.  This is safe
    because when package A imports package B it only reads package B's .gox
    file.  This means that changes that do not affect export information
    will not cause dependent packages to be recompiled.
    
    Reviewed-on: https://go-review.googlesource.com/32476

Modified:
    trunk/gcc/go/gofrontend/MERGE
    trunk/libgo/Makefile.am
    trunk/libgo/Makefile.in