[gdal-dev] building plugin in Linux64

[Ivan Lucena]

Hi there,

I am trying to build a GDAL driver as a plugin in a Linux 64 environment and I am having a little bit of problem. Besides the fact that I don't' have my glasses today...

1. I run ./configure, make, make install without any problem. Everything works, the driver works just fine. But I need to build it as a plugin, so when I try to run "make plugin" on the driver folder the GNUmakefile crashes because the variable LD_SHARED is not defined. I did that several times before in Linux32 and never have that problem.

By looking at GDAL I can see:

LD_SHARED       =

That is kind of strange because the main GDAL shared library was created perfectly in the same environment. Don't it uses the same settings?

2. Then I add this to the command: 'make plugin -e LD_SHARED="gcc -shared"' what results in:

relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; recompile with -fPIC

Again, why do I need that if it was perfectly fine when I build that same driver into the GDAL shared library?

3. If I add the '-fPIC" to the compilation and run the gcc -shared again, I got the plugin built but when I run it it complains that it cannot find the first initialization function on the commercial shared library that the driver uses. It seems like a shared library architecture mismatch to me. I don't know.  

But again, that same driver works perfectly when build into the GDAL shared library, without any -fPIC at all.

Does anybody has a glue?

Thanks in advance,

Ivan