New question #660024 on Yade:
https://answers.launchpad.net/yade/+question/660024
Hello,
I just tried (for the first time....) to play with chunksize for source
compilation. I downloaded the source code as of today, defined one cmake option
as -DCHUNKSIZE=X (I tested for now X=1, 2, 4, 8) and enjoyed to see "--
CHUNKSIZE is set to X" in cmake output.
This being said, most of my "make install" (with -j Y, Y = 1, 2, 4 or 8) then
faced compilation errors, depending on X (the chunksize value)
E.g., for X = chunksize = 8
[ 11%] Building CXX object CMakeFiles/yade.dir/pkg.4.cpp.o
In file included from /usr/include/CGAL/boost/graph/iterator.h:28:0,
from
/usr/include/CGAL/boost/graph/graph_traits_HalfedgeDS.h:34,
from
/usr/include/CGAL/boost/graph/graph_traits_Polyhedron_3.h:23,
from /usr/include/CGAL/Polyhedron_3.h:1540,
from /home/jerome.duriez/Yade/myTrunk/pkg/dem/Polyhedra.hpp:28,
from /home/jerome.duriez/Yade/myTrunk/pkg/dem/Polyhedra.cpp:9,
from /home/jerome.duriez/Yade/myBuild/pkg.4.cpp:5:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:975:21: error:
‘boost::Q_FOREACH’ has not been declared
# define foreach Q_FOREACH
Or , for X = chunksize = 4
[ 50%] Linking CXX shared library lib/x86_64-linux-gnu/libyade.so
CMakeFiles/yade.dir/lib.5.cpp.o: In function `Real_timer::Real_timer()':
lib.5.cpp:(.text+0x160): multiple definition of `Real_timer::Real_timer()'
CMakeFiles/yade.dir/lib.10.cpp.o:lib.10.cpp:(.text+0x0): first defined here
CMakeFiles/yade.dir/lib.5.cpp.o: In function `Real_timer::Real_timer()':
lib.5.cpp:(.text+0x160): multiple definition of `Real_timer::Real_timer()'
CMakeFiles/yade.dir/lib.10.cpp.o:lib.10.cpp:(.text+0x0): first defined here
(and plenty of other multiple definition errors)
I think compilation completed successfully only once with chunksize>1 (for
chunksize=2), with a comparable/identical compilation time than chunksize=1,
which was also a disappointment.
Anyway, I start to doubt about this one: I actually wonder whether compilation
could be chunksize-path-dependent ?... (in some aspects like the live output,
at least)
Needless to say that the compilation of the exact same code completes
successfully when chunksize = 1...
Would you have any explanations / advices ? Thanks,
Jérôme
PS: cmake version 3.5.1, and ubuntu 16.04
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