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Simplify CMake per-source license notices Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
9 years ago
  1. /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
  2. file Copyright.txt or https://cmake.org/licensing for details. */
  3. #ifndef cmExecProgramCommand_h
  4. #define cmExecProgramCommand_h
  5. #include "cmConfigure.h" // IWYU pragma: keep
  6. #include <string>
  7. #include <vector>
  8. #include "cmCommand.h"
  9. #include "cmProcessOutput.h"
  10. class cmExecutionStatus;
  11. /** \class cmExecProgramCommand
  12. * \brief Command that adds a target to the build system.
  13. *
  14. * cmExecProgramCommand adds an extra target to the build system.
  15. * This is useful when you would like to add special
  16. * targets like "install,", "clean," and so on.
  17. */
  18. class cmExecProgramCommand : public cmCommand
  19. {
  20. public:
  21. typedef cmProcessOutput::Encoding Encoding;
  22. /**
  23. * This is a virtual constructor for the command.
  24. */
  25. cmCommand* Clone() override { return new cmExecProgramCommand; }
  26. /**
  27. * This is called when the command is first encountered in
  28. * the CMakeLists.txt file.
  29. */
  30. bool InitialPass(std::vector<std::string> const& args,
  31. cmExecutionStatus& status) override;
  32. private:
  33. static bool RunCommand(const char* command, std::string& output, int& retVal,
  34. const char* directory = nullptr, bool verbose = true,
  35. Encoding encoding = cmProcessOutput::Auto);
  36. };
  37. #endif