jdk8 makefile changes
kelly.ohair at oracle.com
Wed Jul 11 01:06:36 UTC 2012
A Windows tip:
* On Windows, I use:
make BUILD_LOG_WRAPPER= VERBOSE=
The logger tricks in the new makefiles seem to give Windows/CYGWIN grief, not all the time
On Jul 9, 2012, at 3:12 PM, Kelly O'Hair wrote:
> The jdk8/build forest has been in sync for a few days, so anyone willing to try the new build system with OpenJDK 8, please
> follow these instructions:
> hg clone http://hg.openjdk.java.net/jdk8/build jdk8-build
> cd jdk8-build
> sh ./get_source.sh
> cd common/makefiles
> make images
> Let us know what works, what doesn't.
> Many of us will be concentrating on binary comparisons over the next few days to insure that we are building
> everything we did before, and the same content.
> On Jul 3, 2012, at 11:38 AM, Kelly O'Hair wrote:
>> Heads up...
>> We expect to do a sync up of the jdk8/build forest with the latest in the build-infra forest in the next few days.
>> As the new build-infra project starts getting more solid and we contemplate when we can switch
>> the default to building with the new build-infra Makefiles (we don't know exactly when yet).
>> **** IMPORTANT NOTICE ****
>> It will be important that *anyone* making *any* changes to the jdk8 Makefiles keep the build-dev
>> or build-infra mailing lists informed.
>> For a period of time we need to maintain two separate build mechanisms, and we want to make sure
>> that both build the same thing.
>> The hotspot repository is the one exception where we don't have two sets of makefiles, but we still
>> would like to know when anyone is changing the makefiles or anything to do with the build process.
>> We will soon be running both builds and doing comparisons of the resulting j2sdk-image files from
>> both to insure we match. So if we detect differences we will be tracking down how those differences
>> happened (that's a hint that we will be watching :^).
>> More information on the new build-infra Makefiles can be found at:
>> User Guide is at:
>> Some preliminary timings for building the product image (effectively, build/j2sdk-image/):
>> OLD NEW build-infra times (All estimates, similar VMs/Zones)
>> linux_i586 (21m 59s) (08m 13s)
>> linux_x64 (13m 34s) (07m 04s)
>> solaris_i586 (26m 14s) (11m 31s)
>> solaris_sparc (54m 02s) (28m 21s)
>> windows_i586 (55m 49s) (32m 22s) (old used MKS, build-infra only uses CYGWIN)
>> windows_x64 (36m 36s) (23m 50s) " " "
>> * Machines with more processors will reduce the build time for build-infra builds, less so with the old Makefiles.
>> * Always use local disk or /tmp (all above timings use /tmp, always local disk)
>> * Above uses VMs for Windows and Linux, raw hardware would be faster
>> * Use of ccache can sometimes speed things up, but can also skew the timings,
>> in the above measurements OLD used ccache, NEW did not.
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