Make '--with-hide-internal-symbols=yes' default option

[dron]

There is an option to hide symbols used by GDAL internally that was added a year ago now (see bug #1810 for details). Is it a time to make it default? This options is a great help when you want to build GDAL with the internal third-party stuff (such as libtiff etc.) and still have ability to link with GDAL and that third-party external stuff at the same time.

[dron]

Patch to make --with-hide-internal-symbols enabled by default

[warmerdam]

No, after beta2 is definately *not* the time to make this the default. Frankly, I'm not sure I even want it to be the default ever, but we can re-evaluate this for 1.7.

[dron]

There is another approach possible. This option could be automatically activated when an 'internal' option chosen for one of the libraries.

[Even Rouault]

I close because --with-hide-internal-symbols doesn't really help when wanting to make an application link against GDAL with internal libtiff (4.X) and against system libtiff (3.X). It seems that the linking order '-ltiff -lgdal' or '-lgdal -ltiff' makes a difference. OTB ran into this.

See ​http://www.mail-archive.com/gdal-dev@lists.osgeo.org/msg04966.html

Yes, I can confirm that the order matters:

gcc -c gdalHideSymbols.cxx -I/usr/include/gdal
gcc gdalHideSymbols.o -lgeotiff -lgdal1.6.0 -o gdalHideSymbols-gtiffgdal
gcc gdalHideSymbols.o -lgdal1.6.0 -lgeotiff -o gdalHideSymbols-gdalgtiff
./gdalHideSymbols-gtiffgdal IMAGERY_ortho.tif
Segmentation fault
./gdalHideSymbols-gdalgtiff IMAGERY_ortho.tif
Ok