When compiling with -Werror, GNUCash fails to build due to various error: missing sentinel in function call.
This patch resolves the issue by passing nullptr instead of C-style casting NULL.
This starts by setting the gnucash version number in the 'project' call.
This will result in a number of variables set by cmake. The remainder
of this commit is to reuse the auto-generated
PROJECT_NAME, PROJECT_VERSION, PROJECT_VERSION_MAJOR
PROJECT_VERSION_MINOR, PROJECT_VERSION_PATCH and PROJECT_VERSION_TWEAK
instead of all the various instances of PACKAGE, GNUCASH_MAJOR_VERSION
and so on.
One parameter is worth mentioning - GETTEXT_PACKAGE
GnuCash is not using this directly (any more) but it has to be set before
including gi18n-lib.h.
Each was used exactly once and simply wrapped a function call.
Also replace static function time_parse_failure that just returned a
constant with the constant.
This will avoid a ninja-build from picking up a config.h generated by the autotools build
(in the root build directory). Picking up the wrong config.h may lead to all kinds of
subtle issues if the autotools run was done with different options than the cmake run.
It is split into
- /libgnucash (for the non-gui bits)
- /gnucash (for the gui)
- /common (misc source files used by both)
- /bindings (currently only holds python bindings)
This is the first step in restructuring the code. It will need much
more fine tuning later on.