/*========================================================================= Program: CMake - Cross-Platform Makefile Generator Module: $RCSfile$ Language: C++ Date: $Date$ Version: $Revision$ Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved. See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details. This software is distributed WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the above copyright notices for more information. =========================================================================*/ #ifndef cmAddCustomCommandCommand_h #define cmAddCustomCommandCommand_h #include "cmCommand.h" /** \class cmAddCustomCommandCommand * \brief * * cmAddCustomCommandCommand defines a new command (rule) that can * be executed within the build process * */ class cmAddCustomCommandCommand : public cmCommand { public: /** * This is a virtual constructor for the command. */ virtual cmCommand* Clone() { return new cmAddCustomCommandCommand; } /** * This is called when the command is first encountered in * the CMakeLists.txt file. */ virtual bool InitialPass(std::vector const& args, cmExecutionStatus &status); /** * The name of the command as specified in CMakeList.txt. */ virtual const char* GetName() {return "add_custom_command";} /** * Succinct documentation. */ virtual const char* GetTerseDocumentation() { return "Add a custom build rule to the generated build system."; } /** * More documentation. */ virtual const char* GetFullDocumentation() { return "There are two main signatures for add_custom_command " "The first signature is for adding a custom command " "to produce an output.\n" " add_custom_command(OUTPUT output1 [output2 ...]\n" " COMMAND command1 [ARGS] [args1...]\n" " [COMMAND command2 [ARGS] [args2...] ...]\n" " [MAIN_DEPENDENCY depend]\n" " [DEPENDS [depends...]] [SKIP_RULE_DEPENDS]\n" " [IMPLICIT_DEPENDS depend1 ...]\n" " [WORKING_DIRECTORY dir]\n" " [COMMENT comment] [VERBATIM] [APPEND])\n" "This defines a new command that can be executed during the build " "process. The outputs named should be listed as source files in the " "target for which they are to be generated. " "If an output name is a relative path it will be interpreted " "relative to the build tree directory corresponding to the current " "source directory. " "Note that MAIN_DEPENDENCY is completely optional and is " "used as a suggestion to visual studio about where to hang the " "custom command. In makefile terms this creates a new target in the " "following form:\n" " OUTPUT: MAIN_DEPENDENCY DEPENDS\n" " COMMAND\n" "If more than one command is specified they will be executed in order. " "The optional ARGS argument is for backward compatibility and will be " "ignored.\n" "The second signature adds a custom command to a target " "such as a library or executable. This is useful for " "performing an operation before or after building the target. " "The command becomes part of the target and will only execute " "when the target itself is built. If the target is already built," " the command will not execute.\n" " add_custom_command(TARGET target\n" " PRE_BUILD | PRE_LINK | POST_BUILD\n" " COMMAND command1 [ARGS] [args1...]\n" " [COMMAND command2 [ARGS] [args2...] ...]\n" " [WORKING_DIRECTORY dir]\n" " [COMMENT comment] [VERBATIM])\n" "This defines a new command that will be associated with " "building the specified target. When the command will " "happen is determined by which of the following is specified:\n" " PRE_BUILD - run before all other dependencies\n" " PRE_LINK - run after other dependencies\n" " POST_BUILD - run after the target has been built\n" "Note that the PRE_BUILD option is only supported on Visual " "Studio 7 or later. For all other generators PRE_BUILD " "will be treated as PRE_LINK.\n" "If WORKING_DIRECTORY is specified the command will be executed " "in the directory given. " "If COMMENT is set, the value will be displayed as a " "message before the commands are executed at build time. " "If APPEND is specified the COMMAND and DEPENDS option values " "are appended to the custom command for the first output specified. " "There must have already been a previous call to this command with " "the same output. The COMMENT, WORKING_DIRECTORY, and MAIN_DEPENDENCY " "options are currently ignored when APPEND is given, " "but may be used in the future." "\n" "If VERBATIM is given then all the arguments to the commands will be " "passed exactly as specified no matter the build tool used. " "Note that one level of escapes is still used by the CMake language " "processor before ADD_CUSTOM_TARGET even sees the arguments. " "Use of VERBATIM is recommended as it enables correct behavior. " "When VERBATIM is not given the behavior is platform specific. " "In the future VERBATIM may be enabled by default. The only reason " "it is an option is to preserve compatibility with older CMake code.\n" "If the output of the custom command is not actually " "created as a file on disk it should be marked as SYMBOLIC with " "SET_SOURCE_FILES_PROPERTIES.\n" "The SKIP_RULE_DEPENDS option prevents the custom build rule from " "having a dependency on itself. This prevents the rule from running " "again just because the command changed but is useful to create " "rules that have absolutely no dependencies. Such rules run only " "when the output file is missing.\n" "The IMPLICIT_DEPENDS option requests scanning of implicit " "dependencies of an input file. The language given specifies the " "programming language whose corresponding dependency scanner should " "be used. Currently only C and CXX language scanners are supported. " "Dependencies discovered from the scanning are added to those of " "the custom command at build time. Note that the IMPLICIT_DEPENDS " "option is currently supported only for Makefile generators and " "will be ignored by other generators." "\n" "If COMMAND specifies an executable target (created by " "ADD_EXECUTABLE) it will automatically be replaced by the location " "of the executable created at build time. Additionally a " "target-level dependency will be added so that the executable target " "will be built before any target using this custom command. However " "this does NOT add a file-level dependency that would cause the " "custom command to re-run whenever the executable is recompiled.\n" "If DEPENDS specifies any target (created by an ADD_* command) " "a target-level dependency is created to make sure the target is " "built before any target using this custom command. Additionally, " "if the target is an executable or library a file-level dependency " "is created to cause the custom command to re-run whenever the target " "is recompiled.\n" ; } cmTypeMacro(cmAddCustomCommandCommand, cmCommand); protected: bool CheckOutputs(const std::vector& outputs); }; #endif