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418 lines
12 KiB
C++
418 lines
12 KiB
C++
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#include "cmAddCustomCommandCommand.h"
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#include "cmTarget.h"
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#include "cmSourceFile.h"
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// cmAddCustomCommandCommand
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bool cmAddCustomCommandCommand
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::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
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{
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/* Let's complain at the end of this function about the lack of a particular
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arg. For the moment, let's say that COMMAND, and either TARGET or SOURCE
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are required.
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*/
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if (args.size() < 4)
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{
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this->SetError("called with wrong number of arguments.");
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return false;
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}
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std::string source, target, main_dependency, working;
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std::string comment_buffer;
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const char* comment = 0;
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std::vector<std::string> depends, outputs, output;
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bool verbatim = false;
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bool append = false;
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std::string implicit_depends_lang;
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cmCustomCommand::ImplicitDependsList implicit_depends;
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// Accumulate one command line at a time.
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cmCustomCommandLine currentLine;
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// Save all command lines.
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cmCustomCommandLines commandLines;
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cmTarget::CustomCommandType cctype = cmTarget::POST_BUILD;
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enum tdoing {
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doing_source,
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doing_command,
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doing_target,
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doing_depends,
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doing_implicit_depends_lang,
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doing_implicit_depends_file,
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doing_main_dependency,
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doing_output,
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doing_outputs,
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doing_comment,
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doing_working_directory,
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doing_nothing
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};
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tdoing doing = doing_nothing;
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for (unsigned int j = 0; j < args.size(); ++j)
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{
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std::string const& copy = args[j];
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if(copy == "SOURCE")
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{
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doing = doing_source;
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}
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else if(copy == "COMMAND")
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{
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doing = doing_command;
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// Save the current command before starting the next command.
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if(!currentLine.empty())
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{
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commandLines.push_back(currentLine);
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currentLine.clear();
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}
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}
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else if(copy == "PRE_BUILD")
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{
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cctype = cmTarget::PRE_BUILD;
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}
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else if(copy == "PRE_LINK")
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{
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cctype = cmTarget::PRE_LINK;
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}
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else if(copy == "POST_BUILD")
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{
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cctype = cmTarget::POST_BUILD;
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}
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else if(copy == "VERBATIM")
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{
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verbatim = true;
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}
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else if(copy == "APPEND")
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{
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append = true;
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}
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else if(copy == "TARGET")
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{
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doing = doing_target;
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}
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else if(copy == "ARGS")
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{
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// Ignore this old keyword.
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}
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else if (copy == "DEPENDS")
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{
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doing = doing_depends;
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}
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else if (copy == "OUTPUTS")
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{
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doing = doing_outputs;
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}
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else if (copy == "OUTPUT")
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{
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doing = doing_output;
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}
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else if (copy == "WORKING_DIRECTORY")
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{
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doing = doing_working_directory;
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}
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else if (copy == "MAIN_DEPENDENCY")
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{
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doing = doing_main_dependency;
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}
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else if (copy == "IMPLICIT_DEPENDS")
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{
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doing = doing_implicit_depends_lang;
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}
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else if (copy == "COMMENT")
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{
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doing = doing_comment;
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}
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else
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{
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std::string filename;
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switch (doing)
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{
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case doing_output:
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case doing_outputs:
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if (!cmSystemTools::FileIsFullPath(copy.c_str()))
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{
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// This is an output to be generated, so it should be
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// under the build tree. CMake 2.4 placed this under the
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// source tree. However the only case that this change
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// will break is when someone writes
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//
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// add_custom_command(OUTPUT out.txt ...)
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//
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// and later references "${CMAKE_CURRENT_SOURCE_DIR}/out.txt".
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// This is fairly obscure so we can wait for someone to
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// complain.
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filename = this->Makefile->GetCurrentOutputDirectory();
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filename += "/";
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}
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filename += copy;
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cmSystemTools::ConvertToUnixSlashes(filename);
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break;
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case doing_source:
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// We do not want to convert the argument to SOURCE because
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// that option is only available for backward compatibility.
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// Old-style use of this command may use the SOURCE==TARGET
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// trick which we must preserve. If we convert the source
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// to a full path then it will no longer equal the target.
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default:
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break;
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}
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switch (doing)
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{
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case doing_working_directory:
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working = copy;
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break;
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case doing_source:
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source = copy;
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break;
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case doing_output:
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output.push_back(filename);
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break;
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case doing_main_dependency:
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main_dependency = copy;
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break;
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case doing_implicit_depends_lang:
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implicit_depends_lang = copy;
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doing = doing_implicit_depends_file;
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break;
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case doing_implicit_depends_file:
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{
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// An implicit dependency starting point is also an
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// explicit dependency.
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std::string dep = copy;
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cmSystemTools::ConvertToUnixSlashes(dep);
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depends.push_back(dep);
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// Add the implicit dependency language and file.
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cmCustomCommand::ImplicitDependsPair
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entry(implicit_depends_lang, dep);
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implicit_depends.push_back(entry);
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// Switch back to looking for a language.
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doing = doing_implicit_depends_lang;
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}
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break;
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case doing_command:
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currentLine.push_back(copy);
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break;
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case doing_target:
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target = copy;
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break;
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case doing_depends:
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{
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std::string dep = copy;
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cmSystemTools::ConvertToUnixSlashes(dep);
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depends.push_back(dep);
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}
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break;
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case doing_outputs:
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outputs.push_back(filename);
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break;
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case doing_comment:
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comment_buffer = copy;
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comment = comment_buffer.c_str();
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break;
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default:
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this->SetError("Wrong syntax. Unknown type of argument.");
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return false;
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}
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}
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}
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// Store the last command line finished.
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if(!currentLine.empty())
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{
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commandLines.push_back(currentLine);
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currentLine.clear();
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}
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// At this point we could complain about the lack of arguments. For
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// the moment, let's say that COMMAND, TARGET are always required.
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if(output.empty() && target.empty())
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{
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this->SetError("Wrong syntax. A TARGET or OUTPUT must be specified.");
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return false;
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}
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if(source.empty() && !target.empty() && !output.empty())
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{
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this->SetError(
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"Wrong syntax. A TARGET and OUTPUT can not both be specified.");
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return false;
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}
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if(append && output.empty())
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{
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this->SetError("given APPEND option with no OUTPUT.");
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return false;
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}
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// Make sure the output names and locations are safe.
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if(!this->CheckOutputs(output) || !this->CheckOutputs(outputs))
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{
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return false;
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}
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// Check for an append request.
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if(append)
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{
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// Lookup an existing command.
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if(cmSourceFile* sf =
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this->Makefile->GetSourceFileWithOutput(output[0].c_str()))
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{
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if(cmCustomCommand* cc = sf->GetCustomCommand())
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{
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cc->AppendCommands(commandLines);
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cc->AppendDepends(depends);
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cc->AppendImplicitDepends(implicit_depends);
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return true;
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}
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}
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// No command for this output exists.
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cmOStringStream e;
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e << "given APPEND option with output \"" << output[0].c_str()
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<< "\" which is not already a custom command output.";
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this->SetError(e.str().c_str());
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return false;
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}
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// Convert working directory to a full path.
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if(!working.empty())
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{
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const char* build_dir = this->Makefile->GetCurrentOutputDirectory();
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working = cmSystemTools::CollapseFullPath(working.c_str(), build_dir);
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}
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// Choose which mode of the command to use.
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bool escapeOldStyle = !verbatim;
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if(source.empty() && output.empty())
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{
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// Source is empty, use the target.
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std::vector<std::string> no_depends;
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this->Makefile->AddCustomCommandToTarget(target.c_str(), no_depends,
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commandLines, cctype,
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comment, working.c_str(),
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escapeOldStyle);
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}
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else if(target.empty())
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{
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// Target is empty, use the output.
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this->Makefile->AddCustomCommandToOutput(output, depends,
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main_dependency.c_str(),
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commandLines, comment,
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working.c_str(), false,
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escapeOldStyle);
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// Add implicit dependency scanning requests if any were given.
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if(!implicit_depends.empty())
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{
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bool okay = false;
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if(cmSourceFile* sf =
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this->Makefile->GetSourceFileWithOutput(output[0].c_str()))
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{
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if(cmCustomCommand* cc = sf->GetCustomCommand())
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{
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okay = true;
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cc->SetImplicitDepends(implicit_depends);
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}
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}
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if(!okay)
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{
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cmOStringStream e;
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e << "could not locate source file with a custom command producing \""
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<< output[0] << "\" even though this command tried to create it!";
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this->SetError(e.str().c_str());
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return false;
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}
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}
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}
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else
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{
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bool issueMessage = true;
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cmOStringStream e;
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cmake::MessageType messageType = cmake::AUTHOR_WARNING;
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switch(this->Makefile->GetPolicyStatus(cmPolicies::CMP0050))
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{
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case cmPolicies::WARN:
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e << (this->Makefile->GetPolicies()
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->GetPolicyWarning(cmPolicies::CMP0050)) << "\n";
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break;
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case cmPolicies::OLD:
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issueMessage = false;
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break;
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case cmPolicies::REQUIRED_ALWAYS:
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case cmPolicies::REQUIRED_IF_USED:
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case cmPolicies::NEW:
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messageType = cmake::FATAL_ERROR;
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break;
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}
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if (issueMessage)
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{
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e << "The SOURCE signatures of add_custom_command are no longer "
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"supported.";
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this->Makefile->IssueMessage(messageType, e.str().c_str());
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if (messageType == cmake::FATAL_ERROR)
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{
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return false;
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}
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}
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// Use the old-style mode for backward compatibility.
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this->Makefile->AddCustomCommandOldStyle(target.c_str(), outputs, depends,
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source.c_str(), commandLines,
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comment);
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}
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return true;
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}
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//----------------------------------------------------------------------------
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bool
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cmAddCustomCommandCommand
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::CheckOutputs(const std::vector<std::string>& outputs)
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{
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for(std::vector<std::string>::const_iterator o = outputs.begin();
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o != outputs.end(); ++o)
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{
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// Make sure the file will not be generated into the source
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// directory during an out of source build.
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if(!this->Makefile->CanIWriteThisFile(o->c_str()))
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{
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std::string e = "attempted to have a file \"" + *o +
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"\" in a source directory as an output of custom command.";
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this->SetError(e.c_str());
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cmSystemTools::SetFatalErrorOccured();
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return false;
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}
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// Make sure the output file name has no invalid characters.
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std::string::size_type pos = o->find_first_of("#<>");
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if(pos != o->npos)
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{
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cmOStringStream msg;
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msg << "called with OUTPUT containing a \"" << (*o)[pos]
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<< "\". This character is not allowed.";
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this->SetError(msg.str().c_str());
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return false;
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}
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}
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return true;
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}
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