[Pljava-dev] Building from source for PG 8.2.4

[Eric Faulhaber]

Kris Jurka wrote:
>
>
> On Fri, 31 Aug 2007, Eric Faulhaber wrote:
>
>> Actually, it turns out something was wrong with my build:  pljava.so was
>> not linking to libjvm.so.  The problem area for me was with the setup of
>> the directory in which we look to link to the JVM (in
>> src/C/pljava/Makefile):
>>
>>                        JVM_LIB := $(firstword $(shell /bin/ls -d \
>>                                $(JRE_LIB)/client \
>>                                $(JRE_LIB)/server \
>>                                $(JRE_LIB)/jrockit \
>>                                2> /dev/null))
>>
>> I temporarily worked around this by hard-coding the target JVM_LIB
>> directory in the Makefile, but clearly this is not a permanent
>> solution.  So, something appears to be invalid with my build
>> environment.  I had JAVA_HOME set to my Java 1.5 directory.  Something
>> else I should have set?
>
> Any chance your machine reports something other than i386 or i686 for 
> $host_cpu?  If you have something like i586, the makefile in question 
> will not provide the appropriate JRE_CPU mapping (circa line 55).  
> Echoing JRE_LIB prior to were you hardcoded things would be informative.
Sure enough:

   /usr/lib/jvm/java-1.5.0-sun/jre/lib/i486

The following change to the Makefile fixes this;  however, as I am not a 
make guru, there may be a better way to handle this:

RCS file: 
/usr/local/cvsroot/pljava/org.postgresql.pljava/src/C/pljava/Makefile,v
retrieving revision 1.37
diff -r1.37 Makefile
57a58,60
 >       ifeq ($(host_cpu), i486)
 >               JRE_CPU := i386
 >       else
63a67
 >       endif

I am open to a better change, but I'll go with this for my local copy 
for now.

The only question I have left:  is there a way to partially override the 
compiler options divined from pg_config, so I can turn off -g but 
inherit the rest?

Thanks,
Eric Faulhaber