[brlcad-devel] Cmake Vs. Autotools: Time to Configure, Build, and Install

[Tom B. <tom...@gm...>]

Since I've started building BRL-CAD withh cmake I've felt that a cmake
build was slower than an autotools one, but, while testing the vdeck
move, I got a chance to time them both:

autotools:
========

  time (sh autogen.sh ; ./configure --prefix=/usr/brlcad/dev-7.21.0) : 1m 50s
  time make -j4 : 8m 3s
  time sudo make install : 1m 43s

  total: 11m 36s

cmake:
======

  time cmake ../brlcad-svn/brlcad-trunk -DBRLCAD_BUNDLED_LIBS=ON       \
       -DBRLCAD_ZLIB=OFF              \
       -DCMAKE_BUILD_TYPE=Rel        \
       -DBRLCAD_ENABLE_OPENGL=ON : 1m 33s

  time make -j4 : 17m 12s
  time sudo make install : 1m 8s

  total: 19m 53s

So my feeling was confirmed (although not very scientifically).

Best regards,

-Tom