* To benefit from the precompiled-header (PCH) it MUST provide "the first C token."
Advantages:
Never worry about the include stack again. Remember, this means one less thing
for random module developers, community people learning C++, and new developers
to deal with. It should reduce the learning curve and barrier for participation.
Disadvantages:
Makes overall compilation a bit slower, especially without any additional
work to improve it again. There are several opportunities, places where the
PCH is probably being ignored, etc that can be addressed.
* librb is no longer a separately configured subproject.
* charybdis is now a standalone directory with a binary.
* Include path layout now requires a directory ircd/ rb/ etc.
Charybdis requires C99 already, so it's high time we start using
stdbool. I've converted a few pieces of code already.
A lot of the old code that uses YES/NO should probably be updated too
because that's fucking hideous.
AC_LANG_PROGRAM needs to be quoted when used within AC_*_IFELSE:
https://lists.gnu.org/archive/html/bug-autoconf/2011-04/msg00017.html
This fixes the following warnings:
$ autoreconf
configure.ac:298: warning: AC_LANG_CONFTEST: no AC_LANG_SOURCE call detected in body
../../lib/autoconf/lang.m4:193: AC_LANG_CONFTEST is expanded from...
../../lib/autoconf/general.m4:2729: _AC_RUN_IFELSE is expanded from...
../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
../../lib/autoconf/general.m4:2748: AC_RUN_IFELSE is expanded from...
configure.ac:298: the top level
configure.ac:593: warning: AC_LANG_CONFTEST: no AC_LANG_SOURCE call detected in body
../../lib/autoconf/lang.m4:193: AC_LANG_CONFTEST is expanded from...
../../lib/autoconf/general.m4:2661: _AC_LINK_IFELSE is expanded from...
../../lib/autoconf/general.m4:2678: AC_LINK_IFELSE is expanded from...
configure.ac:593: the top level
...
configure.ac:309: warning: AC_LANG_CONFTEST: no AC_LANG_SOURCE call detected in body
../../lib/autoconf/lang.m4:193: AC_LANG_CONFTEST is expanded from...
../../lib/autoconf/general.m4:2729: _AC_RUN_IFELSE is expanded from...
../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
../../lib/autoconf/general.m4:2748: AC_RUN_IFELSE is expanded from...
configure.ac:309: the top level
...
