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35eaed8d07
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>
42 lines
1.5 KiB
Plaintext
42 lines
1.5 KiB
Plaintext
comment "zeromq needs a toolchain w/ C++, IPv6, largefile, wchar, threads"
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depends on !(BR2_INSTALL_LIBSTDCPP && BR2_INET_IPV6 && BR2_LARGEFILE \
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&& BR2_USE_WCHAR && BR2_TOOLCHAIN_HAS_THREADS)
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config BR2_PACKAGE_ZEROMQ
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bool "zeromq"
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depends on BR2_INSTALL_LIBSTDCPP
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depends on BR2_INET_IPV6
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depends on BR2_LARGEFILE # util-linux
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depends on BR2_USE_WCHAR # util-linux
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depends on BR2_TOOLCHAIN_HAS_THREADS
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select BR2_PACKAGE_UTIL_LINUX
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select BR2_PACKAGE_UTIL_LINUX_LIBUUID
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help
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ØMQ (ZeroMQ, 0MQ, zmq) looks like an embeddable networking
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library but acts like a concurrency framework. It gives you
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sockets that carry whole messages across various transports
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like in-process, inter- process, TCP, and multicast. You can
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connect sockets N-to-N with patterns like fanout, pub-sub,
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task distribution, and request-reply. It's fast enough to
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be the fabric for clustered products. Its asynchronous I/O
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model gives you scalable multicore applications, built as
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asynchronous message-processing tasks. It has a score of
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language APIs and runs on most operating systems.
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ØMQ is from iMatix and is LGPL open source.
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http://www.zeromq.org/
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if BR2_PACKAGE_ZEROMQ
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config BR2_PACKAGE_ZEROMQ_PGM
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bool "PGM/EPGM support"
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depends on !BR2_avr32 # openpgm
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select BR2_PACKAGE_OPENPGM
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help
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Add support for Pragmatic General Multicast protocol (RFC 3208)
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implemented either over raw IP packets or UDP datagrams
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(encapsulated PGM). This requires OpenPGM library.
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endif
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