[geos-devel] cmake detailed comments

[Sandro Santilli]

I should add, I'm using cmake version 3.16.3

--strk;

On Wed, Oct 13, 2021 at 11:31:54PM +0200, Sandro Santilli wrote:
> On Wed, Oct 13, 2021 at 12:08:50PM -0400, Greg Troxel wrote:
> 
> > So maybe strk can test (on Linux I'm guessing):
> 
> Ubuntu 20.10 here
> 
> >   build and install geos 3.9.1 as --prefix=/usr/foo
> 
> Done (3.9 branch of geos):
> 
>   ./autogen.sh && \
>   ./configure --prefix=/tmp/geos && \
>   sudo make install
> 
> 
> Note that after this I get:
> 
>   $ objdump -x /tmp/geos/lib/libgeos_c.so.1.14.2  | grep RUNPATH
>     RUNPATH              /tmp/geos/lib
> 
> I'm not sure it's relevant.
> 
> >   build geos 3.10 by telling cmake to use /usr/foo as prefix, and
> >   passing in the environment
> >     CPPFLAGS=-I/usr/foo/include
> >     LDFLAGS="-L/usr/foo/lib -Wl,-R/usr/foo/lib"
> >   as a packaging system building everything for /usr/foo would do.
> 
> Done:
> 
>   $ export CPPFLAGS=-I/tmp/geos
>   $ export LDFLAGS="-L/tmp/geos/lib -Wl,-R/tmp/geos/lib"
>   $ cmake .
>   $ make 
> 
> >   Then look at the test binaries  with objdump -x, ldd, and run them.I
> >   expect they will mislink against the installed geos.
> 
>   $ objdump -x bin/test_geos_unit | grep RUNPATH
>     RUNPATH /tmp/geos/lib:/usr/local/src/geos/geos/src/main/lib
>   $ ldd bin/test_geos_unit | grep tmp
>         libgeos_c.so.1 => /tmp/geos/lib/libgeos_c.so.1 (0x00007f0be9ead000)
>         libgeos-3.9.2.so => /tmp/geos/lib/libgeos-3.9.2.so (0x00007f0be9489000)
> 
> > If so, the bug in cmake or geos cmakefiles is that the extra RPATH for
> > tests is put after the other RPATH values, rather then being put first.
> > 
> > Or rather, that is the bug, but if you can reproduce it that's progress
> > in understanding its scope.
> 
> So yes, I can reproduce the problem on a Linux system.
> 
> --strk;

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