Would getting the hotspot "project" to compile be a good first step
at porting the JDK to a new platform? I'm still trying to find the
entry point to this long road. If not hotspot, what else would be a
good first effort at porting something?
Also, on a quick perusal, it sure seems like there's a lot of
assembly-related files in this project. I suppose that's the end
result of lots of evolution and performance enhancing. But for a
newbie to this project it can sure seem daunting :)
Rob Ross, Lead Software Engineer
E! Networks
---------------------------------------------------
"Beware of he who would deny you access to information, for in his
heart he dreams himself your master." -- Commissioner Pravin Lal
On Jul 22, 2008, at 4:43 PM, Kelly O'Hair wrote:
Jeffrey Baker wrote:
On Tue, Jul 22, 2008 at 1:53 PM, Kelly O'Hair
<[EMAIL PROTECTED]> wrote:
Jeffrey Baker wrote:
What is the officially blessed compiler? This one appears to be
gcc
4.2.3, but I have numerous other revisions of gcc kicking around,
including 4.1 and 4.2.
You won't like this, but it's 3.2.
That is a bit inconvenient. Ubuntu provides 3.3 and 3.4, but not
3.2.
Nevertheless, I'm sure I can find the source somewhere.
It sounds like 4.2 might have problems, you might just try 4.1.
We are trying to upgrade our official Linux systems, but it's taking
longer than expected.
Treat hotspot separate, build it the way you want, and plug it into
the jdk image you want to use. Your builds will be faster and you
can avoid building lots of jdk code you don't need to repeatedly
rebuild.
In the beginning, I could not get anything to work aside from the top
level build system. Now I appear to be suitably equipped to type
'make' in hotspot/make, which is an improvement. Still, 'make
profiled' is not valid, and 'make help' does not offer any advice on
the topic. I am taunted by the 'profiled' target in the linux
Makefile!
The top level hotspot/make/Makefile was originally written by me.
The other makefiles have a more colorful history. ;^)
Try mimic'ing the use of the "jvmg" target in the hotspot/make/
Makefile,
I'm sure you could create a set of rules that would result in doing
a "profiled" build, but you are on your own with this.
I only added selected build targets to the top level Makefile,
which wasn't really for developers as much as for the overall builds
and release engineering.
What is the official way to build openjdk with profiling?
As far as I know, there is none. It's just not something that is
done
much anymore.
Which explains at least the difficulty of doing so ...
When we are doing profiling we use tools like the Sun Studio
Analyzer
or the NetBeans profiler, where we really don't need to build the
image
in any special way. Sun Studio 12 is available on Linux, with the
Analyzer,
but I have never used it.
That's an idea. I think I might try SS12 for a bit.
Have fun.
-kto
-jwb
