Instead of always defining config values, only #define options that are
enabled, so that #ifdef/#ifndef can be used. Generate #undef lines for
the disabled variables so the names are still visible in config.h.
Change-Id: Iaf56597ea6ae57b384387cc8a292d63960b611e4
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
All source files will now depend on config.h, which is generated based
on the defaults in CONFIG and the command line arguments passed to make.
This ensures that any configuration changes, including on the command
line, cause a full rebuild.
Change-Id: I6b6fa3290941200dbcf32297c66df8dc5ee18e94
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
