[fedora-java] db merging script

[Andrew Haley]

Anthony Green writes:
 > On Wed, 2005-03-23 at 17:44 -0700, Tom Tromey wrote:
 > > >>>>> "Anthony" == Anthony Green <green at redhat.com> writes:
 > > 
 > > Anthony> Here's a real-world example from the servletapi5 spec file.  It
 > > Anthony> currently assumes that we should be using `gcj-dbtool -p`.
 > > Anthony> Comments/suggestions welcome.
 > > 
 > > Anthony> + # Generate native code.
 > > Anthony> + gcj $RPM_OPT_FLAGS -shared -findirect-dispatch -Wl,-Bsymbolic -o libjspapi-%{version}.jar.so jsr152/dist/lib/jsp-api.jar
 > > Anthony> + gcj-dbtool -n jspapi-%{version}.db
 > > [ ...]
 > > 
 > > If it isn't too unwieldy, I would like to see this whole section
 > > replaced by a single call to some shell script to automate the
 > > find-compile-db loop.  My goal is to make gcj-izing a jpackage RPM
 > > utterly trivial...
 > 
 > hmmm.. what do you mean by "find" in find-compile-db?  I don't think
 > it's safe to simply compile and db-ify any .jar file in your build tree.
 > 
 > The best we might hope for is probably something like...
 > 
 > gcj-nativify -build SRC_JARFILE DEST_SO_NAME BUILD_OPTIONS
 > 
 > SRC_JARFILE refers to the jar file we want to process.
 > 
 > DEST_SO_NAME is the name we want to install it as.  JPackages seem to
 > use different build and install jar names in some cases, so we can't
 > infer from SRC_JARFILE.  And we should probably version the library
 > name.
 > 
 > BUILD_OPTIONS is needed because we want to pass in $RPM_OPT_FLAGS.
 > I suppose the script can handle certain options, like -findirect-
 > dispatch and -Wl,Bsymbolic.
 > 
 > I'm not sure I'd call this utterly trivial.  Is it enough of an
 > improvement over what I suggested earlier? 
 > 
 > 
 > Then we could have another little script to replace:
 > 
 > DB=`gcj-dbtool -p %{_libdir}`
 > rm -f $DB

I don't like this.  Any process that starts during this time will fail
because the .db is missing.

The right way is to find everything and merge into the master.  

This is how it should work:

DB=`gcj-dbtool -p %{_libdir}`
(cd $DB.d; ls . | xargs gcj-dbtool -m $DB)

If we expect problems with command line lengths I'll fix gcj-dbtool to
take the list from stdin.

Andrew.