DSE code : David Tweed cmake makefile : Glyn Adgie
Copyright : David Tweed, 2012 Licence : BSD
To build the library and tests: cd build cmake ../src make
This creates libdse.so.* in build/library, and test* in build/test. The tests link to the local library, so there is no need to install it, or to set LD_LIBRARY_PATH. To run test0, do test/test0 in the build directory.
I have not implemented the Cmake stuff to do a 'make install' yet.
Cmake is a cross-platform make, that provides some of functionality of GNU autotools (./configure etc), does dependency-checking by scanning source files for includes, and generates makefiles for use in the actual build.
Cmake favours out-of-source builds, hence the separate build directory. This policy means that the build process does not create any intermediate files or targets in the source tree; they all end up in build, under subdirectories that mirror the subdirectories in src. This make it much easier to distribute clean sources, ready for building on another system. For simple projects, all you have to do is 'rm -r *' in the build directory, then zip up the project root directory.
The operation of Cmake is controlled by files called CMakeLists.txt. In this project, there is a master file in src, that adds the subdirectories 'library' and 'test' to the project. These in turn contain their own CMakeLists.txt files, that build the library and tests. This is therefore a recursive build.
I have made some simple changes to the test sources.
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Added a check on the number of command line arguments, and a usage message.
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Used atoi() instead of fscanf() to read the arguments.
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Improved the resolution of elapsed time measurement, by replacing time(), that has a resolution of 1 second, with a class based on gettimeofday(), that provides a resolution of 1 microsecond.