I decided to try a couple ideas in druntime and followed this
http://wiki.dlang.org/Starting_as_a_Contributor#Fetch_dmd_from_GitHub
Everything went fast and smooth - I have a custom built dmd
version.
Bootstrapping and building dmd was suspiciously fast - took
around 15 secs maybe, if I remember right,
I did my changes to druntime, rebuilt with make -f posix.mak
Compiled a test case with ../dmd/src/dmd test.d, but my changes
were not reflected.
So, I double check I actually did recompile druntime and look for
the output lib files, and immediately thought that it must be
picking up the system include and lib paths instead of this
development env.
I create a dmd.conf in ../dmd/src right next to my custom dmd
binary, but still doesn't work.
I try again invoking ../dmd/src/dmd -conf=../dmd/src/dmd.conf but
still nothing.
I try passing the -I and -L arguments in the command line but
still it is not using my custom druntime.
At this point I flip the table and give up - what could I be
doing wrong?
My expectation was that given I followed the official "tutorial"
closely, everything was going to just work, instead I spent about
2 hours on this and got nowhere...
dmd should have a verbose mode where it outputs what it's trying
to do and with which settings, so I could have a chance at seeing
what I have messed up, and what linker command it is invoking,
... as it is, I felt totally in the dark, and that just adds to
the frustration.
I am on Ubuntu 15 and got a system-wide dmd installed from the
official .deb package.
