Ref:

http://news.povray.org/povray.binaries.programming/message/%3C6086a32c%40news.povray.org%3E/#%3C6086a32c%40news.povray.org%3E

Web message: 6086a32c@news.povray.org

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A note on this release of the povr branch of POV-Ray. In reworking the 
autotools build I pulled all the decades old automatic optimizations. 
This means for good performance you have to specify the optimizations
during the configuration.

A collection of configuration examples can be found in the INSTALL.txt 
files, but for many this one enabling link time optimization will work:

./configure -q COMPILED_BY="me" \
CXXFLAGS="-std=c++17 -O3 -ffast-math -march=native" \
--enable-lto LDFLAGS="-s"

Bill P.

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