Hello,
I have a big problem with my application.
Everything works fine with GCC 3.4 (linux & Mac OS X) or Visual C++ 6
(Win32).
I use templates. Most functions are inline but some are not.
I use precompiled header too because without it, compilation last 1 hour
(15 minutes with it). In the pch, some template classes are included.
I tried to use GCC 4 on Linux and Mac but linking fail with ~2800
undefined symbols. It seems most of them are not inline template functions.
I looked at "gcc.gnu.org/gcc-4.0/changes.html" but there is only stuff
about friend + template. Nothing to help me there...
I have read following documentation "Using the GNU Compiler Collection",
specially "6.6 Where's the Template?". No help there too...
Usually, I explicitly instantiate all the template I use in the units
that define the templates themselves. I think the problem is associated
with the use of the pch but I am not sure (because to check and
recompile the application without the pch I have to fix a huge amount of
code)
As I said, GCC 3.4 and visual C++ have no problem with that.
Is it a GCC 4 regression bug or am I wrong somewhere ?
Any idea ?
PS : gcc --version
gcc-4.0.0 (GCC) 4.0.0 (Mandrakelinux 10.2 4.0.0-0.2mdk)
Thank you for your help.
Sébastien L.
