RFR (M): Enable OpenJDK builds on Windows with MinGW/MSYS (original) (raw)
Volker Simonis volker.simonis at gmail.com
Thu Mar 8 17:39:42 UTC 2012
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Hi,
please review the following changes which make it possible to use MinGW/MSYS as underlying build environment for Windows. Because the changes touch several repositories I prepared three webrevs, all relative to http://hg.openjdk.java.net/jdk8/build
For the main repository: http://cr.openjdk.java.net/~simonis/MinGW_MSYS.v1/
For the HotSpot repository: http://cr.openjdk.java.net/~simonis/MinGW_MSYS_hotspot.v1/
For the JDK repository http://cr.openjdk.java.net/~simonis/MinGW_MSYS_jdk.v1/
Please be so kind and also create three bug ids for the corresponding changes.
The changes are minimal in the sense that I did "just enough" changes to be able to build on Windows with either one of the three Unix emulation environments (MKS, Cygwin, MinGW/MSYS).
The main benefits of the new MinGW/MSYS based Windows build are:
- no problems with make - one can simply use the make tool which comes with MinGW/MSYS
- with the current MinGW/MSYS version the build is known to succeed, while the newest Cygwin 1.7.10 version is known to break the OpenJDK build (see: http://old.nabble.com/Is-anyone-able-to-build-on-Win-7-td33196055.html)
- speed - the MinGW/MSYS build times are comparable to the MKS build times and is at least 50% faster than the Cygwin build times (see numbers below)
The changes are intentionally against the old, "traditional" build system to fix the mentioned Cygwin problems and simplify the Windows build just now. I don't expect any problems in adapting the "new" build infrastructure to MinGW/MSYS as well in a follow-up step.
More information on each change can be found in the corresponding webrevs.
Timing results for the different build environments (MKS ver. 9.4, Cygwin ver. 1.7.9, MinGW/MSYS 1.0.17) for a full JDK 8 product build on a freshly booted, dual core i7 notebook with 8GB RAM, HDD and 64-bit Windows 7:
MKS -- Build times ---------- Target all_product_build Start 2012-02-29 19:19:26 End 2012-02-29 20:07:44 00:03:10 corba 00:03:44 hotspot 00:00:30 jaxp 00:00:37 jaxws 00:39:39 jdk 00:00:36 langtools 00:48:18 TOTAL
MinGW/MSYS -- Build times ---------- Target all_product_build Start 2012-02-29 18:16:31 End 2012-02-29 19:10:59 00:02:57 corba 00:03:04 hotspot 00:00:32 jaxp 00:00:40 jaxws 00:46:36 jdk 00:00:36 langtools 00:54:28 TOTAL
Cygwin -- Build times ---------- Target all_product_build Start 2012-02-29 14:36:50 End 2012-02-29 16:05:50 00:05:47 corba 00:03:24 hotspot 00:00:33 jaxp 00:00:43 jaxws 01:17:45 jdk 00:00:39 langtools 01:29:00 TOTAL
Regards, Volker
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