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TensorFlow is not yet compatible with the C++17 dialect. Allow it to build with gcc:11 by appending -std=c++14 to CXXFLAGS, prior to composing bazelrc. The flag doesn't encompass the building of the ruy library, so this is accompanied by a patch to include the <limits> header in the one place that ruy needs it. Filter out the -fvtable-verify=@(std|preinit) flag, if present. While ostensibly useful for hardening, it prevents TensorFlow from building successfully. Note that, while the pattern is in the form of an extglob, the accompanying shopt does _not_ need to be enabled. Have src_install localise "l", rather than "j", because the function in question never employs the latter. Closes: https://bugs.gentoo.org/787938 Signed-off-by: Kerin Millar <kfm@plushkava.net> Signed-off-by: Sam James <sam@gentoo.org>