I am pretty satisfied with the CMake build system improvements I have just checked in to substantially refine how we deal with the Ada interface and examples. Here is what I have done.
* I have implemented a limited Ada language support for CMake. As a result of this effort, add_library should now work cross-platform, but add_executable is not available since it needs a change to the core of CMake to do the required gnatbind and gnatlink. * I have substantially refined the configuration and taken advantage of the new Ada language support so that the build of libplplotada and the build of the example (still done with a custom rule rather than add_executable because of above limitation in the language support ) should "just work" cross-platform. Caveats: * GNAT compiler package has to be installed (e.g., gnat-4.0 package on Ubuntu Dapper). GNAT is an add-on package for gcc so you must ensure that the version of GNAT that you install is consistent with the gcc version that you have installed. * ENABLE_ada is OFF by default (and we should continue with that default until this interface gets a lot more testing) so must use -DENABLE_ada=ON cmake option to build the libplplotada library. * On really old systems (e.g., Debian stable but not Ubuntu Dapper) it is difficult to find libgnat so you may have to set, e.g., export CMAKE_LIBRARY_PATH=/usr/lib/gcc-lib/i486-linux/3.3.5/adalib to give CMake a strong hint where to find libgnat. * Must use -DBUILD_TEST=ON cmake option so that the "make" command in the build tree builds the ada example. * Must set, e.g., the following environment variables to run the example that was built in the build tree (these have to be set for any example in the build tree, but normally you don't have to worry about this because ctest takes care of it for you): export EXAMPLES_DIR=/home/software/plplot_cvs/HEAD/build_dir/examples export SRC_EXAMPLES_DIR=/home/software/plplot_cvs/HEAD/build_dir/../plplot_cmake/examples export PLPLOT_LIB=/home/software/plplot_cvs/HEAD/build_dir/../plplot_cmake/data Once those caveats are satisfied, then from the top-level of the build tree ldd -r bindings/ada/libplplotadad.so and ldd -r examples/ada/ada_plplot give good results after the "cmake" and "make" commands are executed showing all libraries have been properly found and all symbols resolved. Furthermore, examples/ada/ada_plplot -dev whatever gives good results (so far on Debian stable and Ubuntu Dapper). ToDo: (1) Lots of testing on a variety of platforms. Jerry (and other interested developers), please give it a try, and let me know whether everything works well on your platform of choice. (2) Set up ctest so that the ada example will be executed as a result of the ctest command. This refinement is not essential for testing so long as you remember to set the EXAMPLES_DIR, SRC_EXAMPLES_DIR, and PLPLOT_LIB environment variables to the proper locations for everything. (3) Fill in the rest of the standard examples implemented in Ada. (4) Once a substantial number of standard examples have been implemented and this Ada binding has substantially matured, configure the install. The big question there is where to install libplplotada and its accompanying Ada source files and *.ali files. (N.B. Ada libraries usually have their own directory filled with the library and the source files [at least the spec files but possibly body files as well] and *.ali files.) I will take responsibility for (2) fairly soon, and (4) in the "fullness of time". I may chip in with some help on (3) as well once the pattern of how you program in Ada has been established by the implementation of a few more standard examples. 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 Yorick front-end to PLplot (yplot.sf.net); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __________________________ Linux-powered Science __________________________ ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
