kumquat-buildroot/package/zeromq/Config.in
Thomas De Schampheleire 35eaed8d07 Config.in files: use if/endif instead of 'depends on' for main symbol
In the Config.in file of package foo, it often happens that there are other
symbols besides BR2_PACKAGE_FOO. Typically, these symbols only make sense
when foo itself is enabled. There are two ways to express this: with
    depends on BR2_PACKAGE_FOO
in each extra symbol, or with
    if BR2_PACKAGE_FOO
        ...
    endif
around the entire set of extra symbols.

The if/endif approach avoids the repetition of 'depends on' statements on
multiple symbols, so this is clearly preferred. But even when there is only
one extra symbol, if/endif is a more logical choice:
- it is future-proof for when extra symbols are added
- it allows to have just one strategy instead of two (less confusion)

This patch modifies the Config.in files accordingly.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2013-12-25 12:21:39 +01:00

42 lines
1.5 KiB
Plaintext

comment "zeromq needs a toolchain w/ C++, IPv6, largefile, wchar, threads"
depends on !(BR2_INSTALL_LIBSTDCPP && BR2_INET_IPV6 && BR2_LARGEFILE \
&& BR2_USE_WCHAR && BR2_TOOLCHAIN_HAS_THREADS)
config BR2_PACKAGE_ZEROMQ
bool "zeromq"
depends on BR2_INSTALL_LIBSTDCPP
depends on BR2_INET_IPV6
depends on BR2_LARGEFILE # util-linux
depends on BR2_USE_WCHAR # util-linux
depends on BR2_TOOLCHAIN_HAS_THREADS
select BR2_PACKAGE_UTIL_LINUX
select BR2_PACKAGE_UTIL_LINUX_LIBUUID
help
ØMQ (ZeroMQ, 0MQ, zmq) looks like an embeddable networking
library but acts like a concurrency framework. It gives you
sockets that carry whole messages across various transports
like in-process, inter- process, TCP, and multicast. You can
connect sockets N-to-N with patterns like fanout, pub-sub,
task distribution, and request-reply. It's fast enough to
be the fabric for clustered products. Its asynchronous I/O
model gives you scalable multicore applications, built as
asynchronous message-processing tasks. It has a score of
language APIs and runs on most operating systems.
ØMQ is from iMatix and is LGPL open source.
http://www.zeromq.org/
if BR2_PACKAGE_ZEROMQ
config BR2_PACKAGE_ZEROMQ_PGM
bool "PGM/EPGM support"
depends on !BR2_avr32 # openpgm
select BR2_PACKAGE_OPENPGM
help
Add support for Pragmatic General Multicast protocol (RFC 3208)
implemented either over raw IP packets or UDP datagrams
(encapsulated PGM). This requires OpenPGM library.
endif