gcc-4.3.3-haiku-090129 forbids undefined symbols in shared libraries

[titer]

gcc4 currently adds -no-undefined unconditionally when linking, which I know is expected behavior (mmlr mentioned it in his blog post announcing the native gcc4).

This is going to cause build issues with a number of projects though, which assume the usual behavior of allowing undefined symbols in shared libraries (e.g. try building libevent), and unfortunately I don't believe we can convince everybody else to stop using this "feature".

Updating the specs to only enable -no-undefined when linking apps fixes it (same way gcc2 does it).

[stippi]

Thanks a lot, I ran into the same problem. Where is the specs file located? Your patch was made in the same folder, so I can't tell without searching for specs myself. :-) Can this patch be included in the original 4.3.3 native Haiku GCC package, or does it require rebuilding GCC? Thanks for your work!

[titer]

Run "gcc -dumpspecs > /boot/develop/tools/gcc-4.3.3-haiku-090129/lib/gcc/i586-pc-haiku/4.3.3/specs", and then modify that file.

[mmlr]

Fixed in hrev29490, will be available when the updated GCC4 package is built & uploaded.