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Adjust optimization flags if the CPU does not support SSE4

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Tentatively fixes Homebrew/homebrew#21778, Homebrew/homebrew#24363.
This commit is contained in:
Jack Nagel 2013-11-27 17:25:17 -06:00
parent 8ba503ebb6
commit 14b19ba3c4
2 changed files with 9 additions and 3 deletions
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6
Library/Homebrew/extend/ENV/std.rb
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@ -344,8 +344,12 @@ module Stdenv
if ARGV.build_bottle?
arch = ARGV.bottle_arch || Hardware.oldest_cpu
append flags, Hardware::CPU.optimization_flags.fetch(arch)
elsif Hardware::CPU.intel? && !Hardware::CPU.sse4?
# If the CPU doesn't support SSE4, we cannot trust -march=native or
# -march=<cpu family> to do the right thing because we might be running
# in a VM or on a Hackintosh.
append flags, Hardware::CPU.optimization_flags.fetch(Hardware.oldest_cpu)
else
# Don't set -msse3 and older flags because -march does that for us
append flags, map.fetch(Hardware::CPU.family, default)
end

6
Library/Homebrew/extend/ENV/super.rb
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@ -206,8 +206,10 @@ module Superenv
if ARGV.build_bottle?
arch = ARGV.bottle_arch || Hardware.oldest_cpu
Hardware::CPU.optimization_flags.fetch(arch)
elsif compiler == :clang
"-march=native"
elsif Hardware::CPU.intel? && !Hardware::CPU.sse4?
Hardware::CPU.optimization_flags.fetch(Hardware.oldest_cpu)
else
"-march=native" if compiler == :clang
end
end