[Newbie question] Strange errors trying to build the JDK

[Magnus Ihse Bursie]

On 2018-08-22 02:24, Ioi Lam wrote:
> I am not sure if this is documented anywhere. Try searching for "Error 
> 2". It usually will tell you where the error is.

There's an entire section named "Locating the Source of the Error" in 
doc/building.md. It's worth reading to be proficient in finding and 
fixing build issues quickly.

/Magnus

>
> Thanks
> - Ioi
>
>
> On 8/21/18 4:51 PM, Gustavo Romero wrote:
>> Hi,
>>
>> On 08/21/2018 08:00 PM, David Holmes wrote:
>>> Hi,
>>>
>>> You need to search further up the build log to try and find the 
>>> actual error that occurred when building hotspot.
>>>
>>> Run "make hotspot" and it should be easier to see.
>>
>> In addition to David's suggestion you can also add before the command 
>> LOG=trace, like:
>>
>> $ LOG=trace make hotspot
>>
>> to spot the executed commands in the build process.
>>
>>
>> Regards,
>> Gustavo
>>
>>> David
>>>
>>> On 20/08/2018 11:53 AM, Zambonifofex wrote:
>>>> Hello, everyone.
>>>>
>>>> I am new to collaborating to the JDK, so sorry if this question is too
>>>> newbie‐ish.
>>>>
>>>> I have recently been affected by a minor bug in the ‘java.desktop’
>>>> module on Linux. I figured I’d try to fix it by myself, so I followed
>>>> the steps in the “How to Contribute” page, the “Building” page, as
>>>> well as some more that I could find online.
>>>>
>>>> The bug number is ‘7162479’. The bug is that it calling
>>>> ‘setLocationByPlatform(true)’ on a ‘JFrame’ will not work if
>>>> ‘setResizable(false)’ has been called on the same ‘JFrame’.
>>>>
>>>> When I tried to build the JDK with ‘make images’, after getting a
>>>> couple errors related to the changes I made and fixing them, I started
>>>> to face a strange error that was not related to the changes I made at
>>>> all.
>>>>
>>>> Here is the log I get when trying to run ‘make images’ currently, as
>>>> well as the output of ‘hg id’, if that’s of any help (where
>>>> ‘/home/zambonifofex/jdk $’ is the prompt):
>>>>
>>>>      /home/zambonifofex/jdk/ $ hg id
>>>>      2e91d927e00c+ tip
>>>>      /home/zambonifofex/jdk/ $ make images
>>>>      Building target 'images' in configuration
>>>> 'linux-x86_64-normal-server-release'
>>>>      lib/JvmMapfile.gmk:141: recipe for target
>>>> '/home/zambonifofex/jdk/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/symbols-objects' 
>>>>
>>>> failed
>>>>      make[3]: ***
>>>> [/home/zambonifofex/jdk/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/symbols-objects] 
>>>>
>>>> Error 1
>>>>      make[3]: *** Deleting file
>>>> '/home/zambonifofex/jdk/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/symbols-objects' 
>>>>
>>>>      make/Main.gmk:257: recipe for target 'hotspot-server-libs' failed
>>>>      make[2]: *** [hotspot-server-libs] Error 1
>>>>      make[2]: *** Waiting for unfinished jobs....
>>>>
>>>>      ERROR: Build failed for target 'images' in configuration
>>>> 'linux-x86_64-normal-server-release' (exit code 2)
>>>>
>>>>      === Make failed targets repeated here ===
>>>>      lib/JvmMapfile.gmk:141: recipe for target
>>>> '/home/zambonifofex/jdk/build/linux-x86_64-normal-server-release/hotspot/variant-server/libjvm/symbols-objects' 
>>>>
>>>> failed
>>>>      make/Main.gmk:257: recipe for target 'hotspot-server-libs' failed
>>>>      === End of repeated output ===
>>>>
>>>>      Hint: Try searching the build log for the name of the first 
>>>> failed target.
>>>>      Hint: See doc/building.html#troubleshooting for assistance.
>>>>
>>>>      /home/zambonifofex/jdk/make/Init.gmk:300: recipe for target 
>>>> 'main' failed
>>>>      make[1]: *** [main] Error 1
>>>>      /home/zambonifofex/jdk/make/Init.gmk:186: recipe for target 
>>>> 'images' failed
>>>>      make: *** [images] Error 2
>>>>      /home/zambonifofex/jdk/ $
>>>>
>>>> Any help would be appreciated. Thanks in advance.
>>>>
>>>
>>
>