Build failure with GCC 4.3.4 #1004
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unya
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Dec 13, 2013
Certain versions of gcc generate an 'unrecognized command line option' error message when -Wunused-but-set-variable is used unconditionally. This in turn can cause several of the autoconf tests to misdetect an interface. Now, the use of -Wunused-but-set-variable in the autoconf tests was introduced by commit b9c59ec to address a gcc 4.6 compatibility problem. So we really only need to pass this option for version of gcc which are known to support it. Therefore, the tests have been updated to use the result of the existing ZFS_AC_CONFIG_ALWAYS_NO_UNUSED_BUT_SET_VARIABLE which determines if gcc supports this option. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes openzfs#1004
pcd1193182
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Sep 26, 2023
…zfs#1004) Bumps [async-channel](https://github.com/smol-rs/async-channel) from 1.8.0 to 1.9.0. - [Release notes](https://github.com/smol-rs/async-channel/releases) - [Changelog](https://github.com/smol-rs/async-channel/blob/master/CHANGELOG.md) - [Commits](smol-rs/async-channel@v1.8.0...v1.9.0) --- updated-dependencies: - dependency-name: async-channel dependency-type: indirect update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
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A user reported to me in IRC that he has a build failure with GCC 4.3.4 on Gentoo. The key line from the config.log file is
cc1: error: unrecognized command line option "-Wunused-but-set-variable".It appears that GCC 4.3.4 does not support -Wunused-but-set-variable. We can make this work either by checking for compiler support for -Wunused-but-set-variable and enabling it only when GCC supports it or by eliminating the need for it from tests.
Here are the pastes that he provided to me:
http://pastebin.com/A32WpxmB
http://pastebin.com/SiSkvmVZ
Note that while he is using Gentoo Hardened, the hardening appears to be irrelevant here. I consider this to be a low priority issue, although I am opening an issue to track it anyway.
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