[Gdal-dev] Building SWIG Java with Visual C++ 8.0

[Andrea Aime]

Mateusz Loskot ha scritto:
> Hi,
> 
> I tried to build SWIG Java bindings using Visual C++ 8.0 compiler
> and I got errors from javac about missing symbols.
> 
> Here is detailed log of all my steps I took in the gdal\swig directory:
> 
> http://mateusz.loskot.net/tmp/gdal-java-build.txt
> 
> Am I doing anything wrong or the SWIG Java is incomplete in any way?
> 
> I use following tools:
> 
> SWIG 1.3.31

Hmmm... yeah, I already seen that issue when I tried to build gdal
java bindings under Windows, which unfortunately failed later because
java would not load the generated binding libraries.

Anyways, the following patch fixed the issue:

--- include/java/ogr_java.i     (revisione 11066)
+++ include/java/ogr_java.i     (copia locale)
@@ -46,6 +46,11 @@
  /*
   *
   */
+%pragma(java) jniclassimports=%{
+import org.gdal.osr.SpatialReference;
+import org.gdal.osr.CoordinateTransformation;
+%}
+
  %pragma(java) moduleimports=%{
  import org.gdal.osr.SpatialReference;
  %}

What's funny is that under Linux the patch was not needed.
Under Linux I'm using swig 1.3.28 whilst on Windows the same
as you, 1.3.31.

I hope you manage making the libraries load too... just try
out one of the programs in the java bindings /apps directory...
no matter where I did put the libraries, it complained
that it could not load the libraries. This usually is caused
by failing to load a required library (transitively, that is,
it's not that it's not finding the gdal libs, but something
these depend onto).

Cheers
Andrea