[CMake] Use of -J option with cmake generated makefiles

[Bill Hoffman]

Yann Renard wrote:
> Dear cmake users,
>
> I would like to use the -j option of make in order to speed up
> compilation process using 2 jobs better than 1 (hyperthreading
> processor). Problem is the console output is totally messed up
> (percentages, name of the file to compile/link etc...). Would you share
> a tip to make this work better ?
>   
I frequently use -j8 and the output is not that bad, what version of 
cmake are you using, and on what OS?

For example, here is cmake building with -j8 on an 8 processor machine:
[ 97%] Building CXX object 
Source/CMakeFiles/ccmake.dir/CursesDialog/cmCursesMainForm.o
Linking CXX executable ../bin/DumpDocumentation
[ 97%] Building CXX object 
Source/CMakeFiles/ccmake.dir/CursesDialog/cmCursesPathWidget.o
Linking CXX executable ../bin/ctest
Linking CXX executable ../bin/cmake
Linking CXX executable ../bin/cpack
[ 98%] Building CXX object 
Source/CMakeFiles/ccmake.dir/CursesDialog/cmCursesStringWidget.o
[ 98%] Building CXX object 
Source/CMakeFiles/ccmake.dir/CursesDialog/cmCursesWidget.o
[ 98%] Building CXX object 
Source/CMakeFiles/ccmake.dir/CursesDialog/ccmake.o
Linking CXX executable ../bin/ccmake
[ 98%] Built target DumpDocumentation
[ 98%] Built target cmake
[ 98%] Built target cpack
[ 98%] Built target ctest
[ 98%] Built target ccmake
[ 98%] [ 98%] [ 98%] Generating ../Docs/cmake.txt
Generating ../Docs/ctest.txt
Generating ../Docs/ccmake.txt
[100%] Built target documentation