check for release mode flags in gcc compilres

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#266 opened on Sep 28, 2019 0 comments 0 reactions 0 assignees View on GitHub

enhancement

Description

From:https://stackoverflow.com/questions/21029281/why-is-gcc-4-9-trunk-so-slow

Might not be an issue but trunk is slower than released compilers.

'Extra diagnostic checks enabled; compiler may run slowly. Configure with --enable-checking=release to disable checks.'

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