Build hotspot only in IcedTea after a complete build.
gbenson at redhat.com
Fri Aug 21 06:00:36 PDT 2009
Nagy Mostafa wrote:
> I am having trouble compiling hotspot only in IcedTea6. I build
> IcedTea with Zero as follows:
> ./configure --enable-zero; make;
> Now, I want to modify the bytecode interpreter. What is the
> simplest way to compile hotspot only without compiling all of
> IcedTea. I tried "make hotspot", but sometimes it doesn't detect
> my code changes and even worse the build breaks occasionally.
IcedTea has a two stage build when you configure it that way. The
first stage is a bootstrap: it builds OpenJDK using GCJ and ECJ.
The bootstrapped OpenJDK lives in "openjdk-ecj". The second stage
builds OpenJDK with the bootstrapped OpenJDK. This final OpenJDK
lives in "openjdk".
The "make hotspot" rule in IcedTea rebuilds the HotSpot in the
bootstrap VM in "openjdk-ecj". So, to use "make hotspot" you
need to do an initial build like this:
This will build the bootstrap VM only. Now you can edit the code
in "openjdk-ecj" and rebuild like this:
> Also, how can you do a "make clean" for hotspot only.
The easiest way is this:
rm -Rf openjdk-ecj/build/*/hotspot
...and then do "make hotspot" again.
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