[Bug other/33087] New: Add dependency information to object files and make use of it

[raselmsh at hotmail dot com]

It would be very nice if GCC could save the dependency information for an
object file in the file itself (ideally including the checksums of the source
files used to build it) and optionally check this information when compiling,
so that it would skip files which are up-to-date.  I think that this would have
the potential to seriously reduce makefile-hell and build times.  A usage
example:

cd $(OBJECT_OUTPUT_DIRECTORY)
gcc -c $(GCC_OPTIONS) source_file1.c source_file2.c source_file3.c ...

Where only those object files out of source_file1.o, source_file2.o,
source_file3.o ... which were out of date would be rebuilt.  Compare this to
the number of lines currently needed to manage dependencies correctly.


-- 
           Summary: Add dependency information to object files and make use
                    of it
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: other
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: raselmsh at hotmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33087