Re: GCCMain not found & test suite errors fatal?

On 1/3/2010 8:28 AM, Andrew Haley wrote:
> On 12/31/2009 05:17 PM, John Poole wrote:
>    
>> You wrote:
>>
>>      
>>>>   I suggest you grab ecj.jar and put it in install/share/java.  That
>>>>   should get you a fully working gcj.
>>>>          
>>
>> Thank you, Andrew, I had already tried to do so.
>>
>> Previously I learned the hard way about the ecj.jar issue, so I ran
>> the.../contrib/download_ecj script (which downloaded the ecj.jar from
>> the predefined site) to install the ecj.jar into the trunk directory, I
>> then ran the configuration again so the ecj.jar would be staged into my
>> target for "make ... install".
>>
>> In fact, I do have ecj.jar installed in my target tree: /usr/local/gcj.
>>
>> I even tried adding it to the include parameter and still get the same
>> result. Maybe I'm not using the correct parameter syntax??
>>
>> plug local # pwd
>> /usr/local/gcj/usr/local
>> plug local # find . -name '*ecj*.jar'
>> ./share/java/ecj.jar
>> plug local # export LD_LIBRARY_PATH=/usr/local/gcj/usr/local/lib
>> plug local #
>> plug local # ./bin/gcj  -I./lib/:./share/java/ecj.jar -c
>> /var/work/gcj/HelloWorld.java [B
>>      
> You don't want the -I part.
>
> I'd try stracing gcj to find out what's going on
>
>   $ strace -f -etrace=file gcj -c HelloWorld.java
>
> This will tell you where gcj is looking for its jarfiles.  Look for
> something like this:
>
> ...
> 547   execve("/home/aph/gcc/trunk/install/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/ecj1", ["/home/aph/gcc/trunk/install/libe"..., "Hello.java", "-g1", "-fbootclasspath=./:/home/aph/gcc"..., "-g1", "-fsource=1.5", "-ftarget=1.5", "-fzip-dependency", "/tmp/ccXyDB9d.zip", "-fzip-target", "/tmp/ccipPqBc.jar"], [/* 42 vars */]) = 0
> ...
> 547   stat("/home/aph/gcc/trunk/install/share/java/ecj.jar", {st_mode=S_IFREG|0644, st_size=1377431, ...}) = 0
> 547   open("/home/aph/gcc/trunk/install/share/java/ecj.jar", O_RDONLY) = 3
> ...
>
> Andrew.
>
>    
Perfect.

I followed your suggestion; installed strace and reran the revised 
command line.  The output can be referenced at http://pastebin.com/m7cb292d5

The definitive line is:

172.  [pid  6423] access("/usr/local/share/java/ecj.jar", F_OK) = -1 
ENOENT (No such file or directory)

See also lines 81,82 and 85.

Basically, the problem is that compiler was looking for ecj.jar under a 
fixed(?) /usr/local/share path instead of the path where I had custom 
installed: /usr/local/gcj;  moreover it should have been looking under 
the full path of /usr/local/gcj/usr/local/share/java.

To work-around the path problem, I copied the java directory and its 
contents (on my server, there was no java directory under /usr/share) as 
in the following:

   plug local # pwd
   /usr/local/gcj/usr/local
   plug local # ls share/java
   ecj.jar  libgcj-4.5.0.jar  libgcj-tools-4.5.0.jar
   plug local # cp share/java/* /usr/local/share/java
   plug local #
   plug local # strace -f -etrace=file bin/gcj -c 
/var/work/gcj/HelloWorld.java
   plug local #
   plug local # ls
   bin  HelloWorld.o  include  lib  libexec  share
   plug local #


My successful run is posted at http://pastebin.com/m74e42dc9
I have Bug 42409 pending and will update it with attachments and this 
conclusion.

Thank you, Andrew.

- John L. Poole