Hi all,
As discussed with Vincent at IRC, and based on previous in-person talk with
Raster and Cedric, here follows the proposal to cleanup the efl/ (merged)
build system.
PRE-NOTICE: this is the initial step and won't please everybody. If you're
case is not in the initial proposal, bear with me that you can 1) keep
using the split libs; 2) wait a bit until we clean the merge and work on
your requirement/details.
RATIONALE: the merge is meant to simplify the build by getting everything
in one place and ALSO to remove the huge amount of options we support now
as they are unmanageable.
#1 - every EFL lib is mandatory: no optional builds of some components.
This removes lots of complexities from both configure.ac and
Makefile.am. All the "want_XYZ" should go from configure.ac, we just need
minimal checks to add platform specific dependencies (evil, exotic, eeze).
#2 - every dependency is mandatory: no more optional libjpeg, fontconfig
and so on. No more "automagic" detection that silently causes problems for
99% of users (why can't I see text in e17? why can't I view png?)
This removes lots of complexities from both configure.ac and helps
packagers (see my complaints about packaging EFL on a live system, which
Gentoo users suffer). This also helps people to have the same set of
features everywhere, avoiding bugs like "I can't load font because I had
fontconfig package, but no fontconfig-dev".
In future we may review some of the mandatory libraries. Things like
glib, gnutls/openssl will likely become optional in near future. This is a
case for embedded folks doing custom slim systems.
QUESTION: how to do the pkg-config checks? Should we
PKG_CHECK_MODULE([JPEG], [libjpeg]) and use it everywhere or do
PKG_CHECK_MODULE([EVAS], [all deps here])?
#3 - start with zero options.
Similar to #2, this cuts configure.ac by a big amount and even
Makefile.am will be simplified. In a similar way we guarantee the EFL have
the same set of features everywhere, avoiding bugs and user reports.
As well as #2 we may review this in future, either by adding
--enable-OPTION or by allowing users to specify a custom/hand-made config.h
that defines the options.
The code is not being changed to remove #ifdef, at least not initially.
Work: remove all symbols from configure.ac that starts with libname,
for example EINA_CONFIGURE_MAGIC_DEBUG, EINA_SAFETY_CHECKS,
EINA_LOG_LEVEL_MAXIMUM, EINA_CONFIGURE_HAVE_STDINT_H. Later if we add the
symbol, it will be used for EVERY library (if you disable magic debug, it's
disable for every library).
--
Gustavo Sverzut Barbieri
http://profusion.mobi embedded systems
--------------------------------------
MSN: [email protected]
Skype: gsbarbieri
Mobile: +55 (19) 9225-2202
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