Re: Newbie: Help with Makefile

[Sven Eschenberg <eschenb at cs dot uni-frankfurt dot de>]

Hi there,

First off, you'd better be asking this kinda stuff on the apropriate 
mailinglist.
Concerning the gcc part: obviously you lack a -l<libname> statement, 
because you have undefined symbols (I assume -lgdal or -l GDAL). If the 
lib is not in the search path, you'll need to add an -L statement aswell.
Your 'Makefile.in' is autogenerated - obviously via automake. So, the 
place to start, is the Makefile.am to fix things, or, if you are using 
autoconf aswell, your configure.in (or configure.ac). The right place to 
ask such things would be an autotools mailinglist.

Regards

-Sven


Greg Ederer schrieb:
> Hi,
>
> I'm trying to compile a program called StarSpan using gcc on my Mac OS X 
> machine. StarSpan depends on a library called GDAL. When I first tried 
> to configure/make StarSpan, it complained about not being able to find 
> gdal.h. So, I found gdal.h on my system, and added a -I entry to 
> Makefile.in. Now, make gets a lot further. Currently, I'm getting:
>
> Undefined symbols:
>  "GDALDataset::RasterIO(GDALRWFlag, int, int, int, int, void*, int, int, 
> GDALDataType, int, int*, int, int, int)", referenced from:
>      RasterizeObserver::addPixel(TraversalEvent&)       in 
> starspan_rasterize.o
>
> ...
> (many more lines)
>
> I have found the .cpp file (gdaldataset.cpp) that contains 
> GDALDataset::RasterIO, which is part of the GDAL source distribution. 
> But, I'm not sure where the binary containing this symbol resides. I'm 
> also not sure where/how to add a -L entry in Makefile.in once I find the 
> needed library.
>
> Any suggestions greatly appreciated!