On 2007-12-13 18:45-0800 Alan W. Irwin wrote:
Brad, I am struggling with understanding the recursive make system that
CMake normally employs so I am having trouble following the complete
Makefile logic that my simple example creates. However,
CMakeFiles/tclIndex_examples_tcl2.dir/build.make generated by my simple
CMake example seems to follow the above OPTION A scenario. Indeed, if I
execute
that Makefile directly from the commmand line, e.g.,
make -f CMakeFiles/tclIndex_examples_tcl2.dir/build.make \
CMakeFiles/tclIndex_examples_tcl2.dir/clean
make -j 2 -f CMakeFiles/tclIndex_examples_tcl2.dir/build.make \
CMakeFiles/tclIndex_examples_tcl2.dir/build
there are never double copy problems, while if I run
make clean
make -j 2
there are always double copy problems. (You should try this for yourself to
be sure you can replicate my experience.) So my current working hypothesis
is there is a parallel build issue for OPTION A that CMake artificially
introduces when it recursively invokes make (i.e., the result of the
above "make -j 2" command).
That last sentence was poorly written. Replace it with the following:
So my current working hypothesis is there is a parallel build issue for
OPTION A that CMake artificially introduces through its generated recursive
make system. That generated recursive make system is invoked with the above
"make -j 2" command, but bypassed with the "make -j 2 -f CMakeFiles/..."
command above.
Alan
__________________________
Alan W. Irwin
Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).
Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of
Linux Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
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Linux-powered Science
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