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dev-python/pyblake2: Support optimized (SSSE3+) variants

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This commit is contained in:
Michał Górny
2017-10-21 10:28:53 +02:00
parent be670b7933
commit 4db12167a9
1 changed files with 6 additions and 3 deletions
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9
dev-python/pyblake2/pyblake2-0.9.3.ebuild
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@@ -13,12 +13,15 @@ SRC_URI="mirror://pypi/${PN::1}/${PN}/${P}.tar.gz"
LICENSE="CC0-1.0"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE=""
IUSE="cpu_flags_x86_ssse3 cpu_flags_x86_avx cpu_flags_x86_xop"
python_prepare_all() {
local impl=REGS
# note: SSE2 is 2.5x slower than pure REGS...
# TODO: test other variants on some capable hardware
# note: SSE2 is 2.5x slower than pure REGS, so we ignore it
use cpu_flags_x86_ssse3 && impl=SSSE3
# this does not actually do anything but implicitly enabled SSE4.1...
use cpu_flags_x86_avx && impl=AVX
use cpu_flags_x86_xop && impl=XOP
# uncomment the implementation of choice
sed -i -e "/BLAKE2_COMPRESS_${impl}/s:^#::" setup.py || die