This commit tries to do the minimum necessary to move the guile bits from engine
to bindings/guile. As engine is a very central piece in the software, this unfortunately
still touches many other source files:
- A few helper objects have been squashed together:
* engine-helpers-guile.[ch] (of which the c part is extracted from engine-helpers.c)
* gncBusGuile.[ch]
* gnc-hooks-scm.[ch]
- The initialization function of gncmod-engine no longer initializes the scm bits.
Any scm code that wants to interact with the engine code now has to load
the (gnucash engine) scm module, or sometimes (gnucash business-core).
The bulk of changes in this commit actually is updating all the scm consumers to do so.
- scm-scm target has been removed. Instead (gnucash utilities) is part
of scm-engine. A few dependency graphs have been updated for this.
More refinements will be in followup commits.
That should trigger a regeneration of these swig sources if
any of the header files change.
This is done via a small macro that can be reused for other wrappers as well.
Note
cmake 3.15 introduces a 'FILTER' generator expression
that might allow us to do something like the following:
$<FILTER:$<TARGET_PROPERTY:baselib,SOURCES>,INCLUDE,"*.h[pp]?$">
I toyed briefly with that idea but it currently has two issues:
1. 3.15 is newer than our current minimum cmake requirement, so we can't
depend in that feature yet.
2. the sources are relative to *their* source directory, which
is different from the one in which the wrappers are generated
So they should still be properly transformed into absolute paths
By properly marking certain parameters as private or public
we can have cmake work out most of the link_libraries and
include_directoris for other targets dependent on core-utils
Note core-utils.i is used by both the guile and the python bindings so
it is moved up to the common bindings directory, while guile
specific changes are in bindings/guile.
