[lldb-dev] interesting note on build times: configure/make vs. cmake/ninja

Todd Fiala tfiala at google.com
Wed Feb 5 12:59:31 PST 2014

Hi all,

Just thought I'd pass along that I've just did a build time comparison
between our standard lldb build setup: configure + (g)make (i.e. configure
&& make -j32), vs. cmake + ninja (i.e. cmake -GNinja && ninja).  On an HP
z620 with 32 virtual procs on ssd, it takes me just under 10 minutes to
build lldb with configure/make.  The same machine with ninja + cmake takes
4.25 minutes.  *huge* speedup.

We'll be moving in that direction on our dev setups based on that change.
 If for some reason we hit any hiccups with that, I'll be sure to tell you
about them.
Todd Fiala | Software Engineer | tfiala at google.com | 650-943-3180
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