mingw64 chain compiling win32 regress failure

[robe]

The good news is I get 3 fewer failures compiling my 32-bit under the ming 64 chain. The bad news I still get a failure. See attached file. This is using gcc 4.5.4 (I suspect I probably still have issues with 4.6+)

[esseffe]

Hi Robe,

I've been able to succesfully compile GEOS-trunk [geos-20121123 nightly snapshot] on MinGW-64 v.4.7.0

Anyway I've noticed a very puzzling issue caused by ./configure (please note: it works nicely on MinGW 32, this issue is strictly limited to MinGW 64, and the same identical issue affects the GEOS 3.3.6 ./configure script)

checking whether long long int is 64 bits... no
configure: WARNING: Could not find a working 64bit int type, you may experience
weird bugs (undefined behaviour)

the cause explaining for this oddity is in this line of the ./configure script:

exit(! does_int64_work());

simply changing the above line as follows seems to be an effective solution:

if (does_int64_work())
    exit(0);
exit(-1);

I strongly suspect that Win64 has its own opinions about exit(), true and false :-D

bye Sandro (SpatiaLite maintainer)

[robe]

Sandro,

I've switched to using CMake for building GEOS. It still seems to have the issue with long long int,but at least I can pass that in as an argument and then all regress pass.

http://trac.osgeo.org/geos/wiki/BuildingOnMINGW64CMake

Mat -- any thoughts on accepting Sandro's patch?

[robe]

configure is an autogenerated file. I see the section you are talking about in acsite.m4 though. Unfortunately I don't seem to have the permssions to commit.

[strk]

This is the last ticket before we can close 3.4.0 -- you know I'm not the best person to deal with this. Regina, are you willing to ?

[robe]

Yes as soon as you give me commit access.

[strk]

I did, haven't you read the mailing list ?

[strk]

​http://lists.osgeo.org/pipermail/geos-devel/2013-July/006485.html

[robe]

Okay I have committed my change to acsite.m4 at r3855 (its still hanging - not sure its just me but if its not we may have to look into what is haniging svn). I'll reopen if I see winnie still having problems.