mirror of
https://github.com/reactos/CMake.git
synced 2024-12-03 17:11:04 +00:00
bed3ac8741
- Option was recently added but never released.
- Custom commands no longer depend on build.make so we do
not need the option.
- Rule hashes now take care of rebuilding when rules change
so the dependency is not needed.
170 lines
7.4 KiB
C++
170 lines
7.4 KiB
C++
/*=========================================================================
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Program: CMake - Cross-Platform Makefile Generator
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Module: $RCSfile$
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Language: C++
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Date: $Date$
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Version: $Revision$
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Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
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See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices for more information.
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=========================================================================*/
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#ifndef cmAddCustomCommandCommand_h
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#define cmAddCustomCommandCommand_h
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#include "cmCommand.h"
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/** \class cmAddCustomCommandCommand
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* \brief
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*
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* cmAddCustomCommandCommand defines a new command (rule) that can
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* be executed within the build process
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*
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*/
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class cmAddCustomCommandCommand : public cmCommand
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{
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public:
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/**
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* This is a virtual constructor for the command.
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*/
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virtual cmCommand* Clone()
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{
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return new cmAddCustomCommandCommand;
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}
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/**
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* This is called when the command is first encountered in
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* the CMakeLists.txt file.
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*/
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virtual bool InitialPass(std::vector<std::string> const& args,
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cmExecutionStatus &status);
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/**
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* The name of the command as specified in CMakeList.txt.
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*/
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virtual const char* GetName() {return "add_custom_command";}
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/**
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* Succinct documentation.
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*/
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virtual const char* GetTerseDocumentation()
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{
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return "Add a custom build rule to the generated build system.";
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}
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/**
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* More documentation.
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*/
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virtual const char* GetFullDocumentation()
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{
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return
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"There are two main signatures for add_custom_command "
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"The first signature is for adding a custom command "
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"to produce an output.\n"
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" add_custom_command(OUTPUT output1 [output2 ...]\n"
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" COMMAND command1 [ARGS] [args1...]\n"
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" [COMMAND command2 [ARGS] [args2...] ...]\n"
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" [MAIN_DEPENDENCY depend]\n"
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" [DEPENDS [depends...]]\n"
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" [IMPLICIT_DEPENDS <lang1> depend1 ...]\n"
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" [WORKING_DIRECTORY dir]\n"
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" [COMMENT comment] [VERBATIM] [APPEND])\n"
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"This defines a new command that can be executed during the build "
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"process. The outputs named should be listed as source files in the "
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"target for which they are to be generated. "
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"If an output name is a relative path it will be interpreted "
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"relative to the build tree directory corresponding to the current "
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"source directory. "
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"Note that MAIN_DEPENDENCY is completely optional and is "
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"used as a suggestion to visual studio about where to hang the "
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"custom command. In makefile terms this creates a new target in the "
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"following form:\n"
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" OUTPUT: MAIN_DEPENDENCY DEPENDS\n"
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" COMMAND\n"
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"If more than one command is specified they will be executed in order. "
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"The optional ARGS argument is for backward compatibility and will be "
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"ignored.\n"
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"The second signature adds a custom command to a target "
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"such as a library or executable. This is useful for "
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"performing an operation before or after building the target. "
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"The command becomes part of the target and will only execute "
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"when the target itself is built. If the target is already built,"
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" the command will not execute.\n"
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" add_custom_command(TARGET target\n"
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" PRE_BUILD | PRE_LINK | POST_BUILD\n"
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" COMMAND command1 [ARGS] [args1...]\n"
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" [COMMAND command2 [ARGS] [args2...] ...]\n"
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" [WORKING_DIRECTORY dir]\n"
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" [COMMENT comment] [VERBATIM])\n"
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"This defines a new command that will be associated with "
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"building the specified target. When the command will "
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"happen is determined by which of the following is specified:\n"
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" PRE_BUILD - run before all other dependencies\n"
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" PRE_LINK - run after other dependencies\n"
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" POST_BUILD - run after the target has been built\n"
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"Note that the PRE_BUILD option is only supported on Visual "
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"Studio 7 or later. For all other generators PRE_BUILD "
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"will be treated as PRE_LINK.\n"
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"If WORKING_DIRECTORY is specified the command will be executed "
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"in the directory given. "
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"If COMMENT is set, the value will be displayed as a "
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"message before the commands are executed at build time. "
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"If APPEND is specified the COMMAND and DEPENDS option values "
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"are appended to the custom command for the first output specified. "
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"There must have already been a previous call to this command with "
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"the same output. The COMMENT, WORKING_DIRECTORY, and MAIN_DEPENDENCY "
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"options are currently ignored when APPEND is given, "
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"but may be used in the future."
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"\n"
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"If VERBATIM is given then all the arguments to the commands will be "
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"passed exactly as specified no matter the build tool used. "
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"Note that one level of escapes is still used by the CMake language "
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"processor before ADD_CUSTOM_TARGET even sees the arguments. "
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"Use of VERBATIM is recommended as it enables correct behavior. "
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"When VERBATIM is not given the behavior is platform specific. "
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"In the future VERBATIM may be enabled by default. The only reason "
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"it is an option is to preserve compatibility with older CMake code.\n"
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"If the output of the custom command is not actually "
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"created as a file on disk it should be marked as SYMBOLIC with "
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"SET_SOURCE_FILES_PROPERTIES.\n"
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"The IMPLICIT_DEPENDS option requests scanning of implicit "
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"dependencies of an input file. The language given specifies the "
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"programming language whose corresponding dependency scanner should "
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"be used. Currently only C and CXX language scanners are supported. "
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"Dependencies discovered from the scanning are added to those of "
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"the custom command at build time. Note that the IMPLICIT_DEPENDS "
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"option is currently supported only for Makefile generators and "
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"will be ignored by other generators."
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"\n"
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"If COMMAND specifies an executable target (created by "
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"ADD_EXECUTABLE) it will automatically be replaced by the location "
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"of the executable created at build time. Additionally a "
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"target-level dependency will be added so that the executable target "
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"will be built before any target using this custom command. However "
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"this does NOT add a file-level dependency that would cause the "
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"custom command to re-run whenever the executable is recompiled.\n"
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"If DEPENDS specifies any target (created by an ADD_* command) "
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"a target-level dependency is created to make sure the target is "
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"built before any target using this custom command. Additionally, "
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"if the target is an executable or library a file-level dependency "
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"is created to cause the custom command to re-run whenever the target "
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"is recompiled.\n"
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;
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}
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cmTypeMacro(cmAddCustomCommandCommand, cmCommand);
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protected:
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bool CheckOutputs(const std::vector<std::string>& outputs);
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};
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#endif
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