This is somewhat orthogonal to FLAVORS.
Principle: one port may build several packages in one go.
For instance, egcs will build all compilers, and package stuff as
base, C++, Fortran, etc.
This simplifies some japanese ports greatly, e.g., one Canna port that
builds libs/server/app packages.
How to use:
just set
MULTI_PACKAGES=-ext1 -ext2...
in the Makefile.
Then make package will invoke itself recursively with SUBPACKAGE set to
-ext1, -ext2.
The SUBPACKAGE will fetch package info as PLIST-ext1, COMMENT-ext1,
DESCR-ext1, etc.
The port Makefile itself can test the value of SUBPACKAGE if things differ.
Some problems:
- there still is a main package (with PLIST, DESCR, etc), and it's built
last, so you can't add RUN_DEPENDS=main_package to subpackages, you have
to encode them explicitly in the PLIST for now.
- other ports can't depend on subpackages yet. This is usually not a
problem, it's just a question of choosing the `right' main package (e.g.,
for Canna, it will be canna-lib).
- PLIST.sed recognize @FLAVOR@, which is extended to the current flavor,
so that a subpackage may depend on the corresponding main package in
explicit ways.
describe is also invoked recursively, so that all subpackages appear in
the INDEX.
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