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Simple changes to support builds for ppc64[le] consistent with X86

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These simple changes are required to allow builds on ppc64[le] systems
consistent with X86. The Makefile now recognizes both ppc64 and ppc64le, and
in the absence of PORTABLE=1, the code will be built analogously to the X86
-march=native.

Note that although GCC supports -mcpu=native -mtune=native on POWER, it
doesn't work correctly on all systems. This is why we need to get the actual
machine model from the AUX vector.
This commit is contained in:
bcbrock
2016-01-19 09:08:19 -06:00
parent 83e1de92af
commit f423f05dcd
3 changed files with 9 additions and 3 deletions
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INSTALL.md
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@@ -21,7 +21,7 @@ depend on gflags. You will need to have gflags installed to run `make all`. This
use binaries compiled by `make all` in production.
* By default the binary we produce is optimized for the platform you're compiling on
(-march=native). If you want to build a portable binary, add 'PORTABLE=1' before
(-march=native or the equivalent). If you want to build a portable binary, add 'PORTABLE=1' before
your make commands, like this: `PORTABLE=1 make static_lib`
## Dependencies