Now I got the exceptions to work.
I have not been able to find how to control the libgcc build
process. The configure script seems not to know that I give
different defaults for the compiler in --with switches. Configure
still assumes the compiler defaults arm mode although it is in
thumb mode. I should also be able to give different default
values to all four libraries that are built.
I solved this by building with defaults and then hacked the
makefile of that libgcc directory I use. (fpu) Then I remade the
library. Changing LIBGCC_FLAGS at line 229 did the trick.
So exceptions seems to work now. There is one thing: because I do
not have gc, the OurUnwindException struct that is allocated in
_d_throw is never freed. This is an issue for anybody not using
gc, so there should be a general solution.
The three problems in this project were:
- struct alignment issue that Iain has fixed
- a change/bug in gcc in january-february causing different
object generation. Seems to be fixed in head now.
- building libgcc with the same settings than the rest of the
application. I am still looking a way to control the library
build process.
