RFR: 8284588: Remove GensrcCommonLangtools.gmk

[Magnus Ihse Bursie]

On Fri, 8 Apr 2022 16:59:37 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

>> There's been unnecessary (near) duplication of functionality, and messy logic, in the langtools gensrc step, for a long time. (Basically since we got rid of the mercurial forest...)
>> 
>> This is a first attempt at cleaning this up. The file GensrcCommonLangtools.gmk is removed. This contained three pieces of functionality. 
>> 
>> * SetupVersionProperties was moved to GensrcCommonJdk.gmk (which was renamed to GensrcCommon.gmk). 
>> * PropertiesParser was only used in one place, and moved there. (jdk.compiler/Gensrc.gmk). It was also heavily rewritten to show more clearly what it actually is doing.
>> * SetupCompileProperties (from langtools) were replaced with calls to SetupCompileProperties (from GensrcCommon/"jdk"), which was modified slightly to accomodate for the differences. (Also the Java tool needed to be slightly modified to accept the same syntax as the JDK version of this tool.)
>> 
>> A reasonable follow-up is to research if the two SetupCompileProperties tools can be unified into one.
>
> make/modules/jdk.compiler/Gensrc.gmk line 63:
> 
>> 61:     $(PARSEPROPERTIES_FILES))
>> 62: 
>> 63: PARSEPROPERTIES_ARGS := $(foreach file, $(PARSEPROPERTIES_FILES), \
> 
> This could be simplified by iterating over PARSEPROPERTIES_SRC.

Indeed. :) I am a bit amazed that this code still had potential to be even more simplified. I don't even remember how much junk I throw away, and I still missed this.

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PR: https://git.openjdk.java.net/jdk/pull/8167