My first module (called "geom"), created from "template", compiles (on Windows XP with the "native tools") and the hello() function works.

Now I want to use some functions of a certain library (the GEOS C API). I'm fairly new to C, so probably I'm doing something obvious wrong.

What I have is a header file "geos_c.h" and a DLL "geos_c_fw.dll" (I chose to use a prebuilt DLL for now, since I didn't manage to build the GEOS library as well :-(.)

I put those in the NT directory.

In my geom.mx, I added:

#include <geos_c.h>
int testGeos( ){
initGEOS( NULL,NULL );
finishGEOS();
return GDK_SUCCEED;
}

Now, when I run "nmake NEED_MX=1", I get:

        cl -GF -W3 -wd4273 -wd4102 -MD -nologo -Zi -Ox -I. -I.\.. "-IC:\Pthreads\include" -I.\..\..\src "-IC:\monetdb\MonetDB\NT\include" "-IC:\monetd
b\MonetDB\NT\include\common" "-IC:\monetdb\MonetDB\NT\include\gdk" "-IC:\monetdb\MonetDB\NT\include\monet" "-IC:\monetdb\MonetDB\NT\include\plain" "-I
C:\monetdb\MonetDB\NT\include\mapi" -DNDEBUG   -DLIBGEOM -DCOMPILE_DL_GEOM -Fo"geom.obj" -c "geom.c"
geom.c
        cl -GF -W3 -wd4273 -wd4102 -MD -nologo -Zi -Ox -I. -I.\.. "-IC:\Pthreads\include" -I.\..\..\src "-IC:\monetdb\MonetDB\NT\include" "-IC:\monetd
b\MonetDB\NT\include\common" "-IC:\monetdb\MonetDB\NT\include\gdk" "-IC:\monetdb\MonetDB\NT\include\monet" "-IC:\monetdb\MonetDB\NT\include\plain" "-I
C:\monetdb\MonetDB\NT\include\mapi" -DNDEBUG -LD -Felib_geom.dll geom.glue.obj geom.obj /link "/LIBPATH:C:\monetdb\MonetDB\NT\lib" "/LIBPATH:C:\monet
db\MonetDB\NT\lib\MonetDB" libbat.lib libmonet.lib
   Creating library lib_geom.lib and object lib_geom.exp
geom.obj : error LNK2019: unresolved external symbol _finishGEOS referenced in function _testGeos
geom.obj : error LNK2019: unresolved external symbol _initGEOS referenced in function _testGeos
lib_geom.dll : fatal error LNK1120: 2 unresolved externals

So the compilation of geom.c succeeds, but the linking of lib_geom.dll fails. Apperently, the geos_c_fw.dll is not found. I tried putting it in one of the /LIBPATH, but that doesn't help.

How can I make this work?

Utrecht Professional School,