https://github.com/Kitware/CMake
Tip revision: e31084e65745f9dd422c6aff0a2ed4ada6918805 authored by Brad King on 07 July 2016, 13:17:24 UTC
CMake 3.6.0
CMake 3.6.0
Tip revision: e31084e
cmAddCustomCommandCommand.cxx
/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmAddCustomCommandCommand.h"
#include "cmTarget.h"
#include "cmSourceFile.h"
// cmAddCustomCommandCommand
bool cmAddCustomCommandCommand::InitialPass(
std::vector<std::string> const& args, cmExecutionStatus&)
{
/* Let's complain at the end of this function about the lack of a particular
arg. For the moment, let's say that COMMAND, and either TARGET or SOURCE
are required.
*/
if (args.size() < 4) {
this->SetError("called with wrong number of arguments.");
return false;
}
std::string source, target, main_dependency, working;
std::string comment_buffer;
const char* comment = 0;
std::vector<std::string> depends, outputs, output, byproducts;
bool verbatim = false;
bool append = false;
bool uses_terminal = false;
std::string implicit_depends_lang;
cmCustomCommand::ImplicitDependsList implicit_depends;
// Accumulate one command line at a time.
cmCustomCommandLine currentLine;
// Save all command lines.
cmCustomCommandLines commandLines;
cmTarget::CustomCommandType cctype = cmTarget::POST_BUILD;
enum tdoing
{
doing_source,
doing_command,
doing_target,
doing_depends,
doing_implicit_depends_lang,
doing_implicit_depends_file,
doing_main_dependency,
doing_output,
doing_outputs,
doing_byproducts,
doing_comment,
doing_working_directory,
doing_nothing
};
tdoing doing = doing_nothing;
for (unsigned int j = 0; j < args.size(); ++j) {
std::string const& copy = args[j];
if (copy == "SOURCE") {
doing = doing_source;
} else if (copy == "COMMAND") {
doing = doing_command;
// Save the current command before starting the next command.
if (!currentLine.empty()) {
commandLines.push_back(currentLine);
currentLine.clear();
}
} else if (copy == "PRE_BUILD") {
cctype = cmTarget::PRE_BUILD;
} else if (copy == "PRE_LINK") {
cctype = cmTarget::PRE_LINK;
} else if (copy == "POST_BUILD") {
cctype = cmTarget::POST_BUILD;
} else if (copy == "VERBATIM") {
verbatim = true;
} else if (copy == "APPEND") {
append = true;
} else if (copy == "USES_TERMINAL") {
uses_terminal = true;
} else if (copy == "TARGET") {
doing = doing_target;
} else if (copy == "ARGS") {
// Ignore this old keyword.
} else if (copy == "DEPENDS") {
doing = doing_depends;
} else if (copy == "OUTPUTS") {
doing = doing_outputs;
} else if (copy == "OUTPUT") {
doing = doing_output;
} else if (copy == "BYPRODUCTS") {
doing = doing_byproducts;
} else if (copy == "WORKING_DIRECTORY") {
doing = doing_working_directory;
} else if (copy == "MAIN_DEPENDENCY") {
doing = doing_main_dependency;
} else if (copy == "IMPLICIT_DEPENDS") {
doing = doing_implicit_depends_lang;
} else if (copy == "COMMENT") {
doing = doing_comment;
} else {
std::string filename;
switch (doing) {
case doing_output:
case doing_outputs:
case doing_byproducts:
if (!cmSystemTools::FileIsFullPath(copy.c_str())) {
// This is an output to be generated, so it should be
// under the build tree. CMake 2.4 placed this under the
// source tree. However the only case that this change
// will break is when someone writes
//
// add_custom_command(OUTPUT out.txt ...)
//
// and later references "${CMAKE_CURRENT_SOURCE_DIR}/out.txt".
// This is fairly obscure so we can wait for someone to
// complain.
filename = this->Makefile->GetCurrentBinaryDirectory();
filename += "/";
}
filename += copy;
cmSystemTools::ConvertToUnixSlashes(filename);
break;
case doing_source:
// We do not want to convert the argument to SOURCE because
// that option is only available for backward compatibility.
// Old-style use of this command may use the SOURCE==TARGET
// trick which we must preserve. If we convert the source
// to a full path then it will no longer equal the target.
default:
break;
}
if (cmSystemTools::FileIsFullPath(filename.c_str())) {
filename = cmSystemTools::CollapseFullPath(filename);
}
switch (doing) {
case doing_working_directory:
working = copy;
break;
case doing_source:
source = copy;
break;
case doing_output:
output.push_back(filename);
break;
case doing_main_dependency:
main_dependency = copy;
break;
case doing_implicit_depends_lang:
implicit_depends_lang = copy;
doing = doing_implicit_depends_file;
break;
case doing_implicit_depends_file: {
// An implicit dependency starting point is also an
// explicit dependency.
std::string dep = copy;
cmSystemTools::ConvertToUnixSlashes(dep);
depends.push_back(dep);
// Add the implicit dependency language and file.
cmCustomCommand::ImplicitDependsPair entry(implicit_depends_lang,
dep);
implicit_depends.push_back(entry);
// Switch back to looking for a language.
doing = doing_implicit_depends_lang;
} break;
case doing_command:
currentLine.push_back(copy);
break;
case doing_target:
target = copy;
break;
case doing_depends: {
std::string dep = copy;
cmSystemTools::ConvertToUnixSlashes(dep);
depends.push_back(dep);
} break;
case doing_outputs:
outputs.push_back(filename);
break;
case doing_byproducts:
byproducts.push_back(filename);
break;
case doing_comment:
comment_buffer = copy;
comment = comment_buffer.c_str();
break;
default:
this->SetError("Wrong syntax. Unknown type of argument.");
return false;
}
}
}
// Store the last command line finished.
if (!currentLine.empty()) {
commandLines.push_back(currentLine);
currentLine.clear();
}
// At this point we could complain about the lack of arguments. For
// the moment, let's say that COMMAND, TARGET are always required.
if (output.empty() && target.empty()) {
this->SetError("Wrong syntax. A TARGET or OUTPUT must be specified.");
return false;
}
if (source.empty() && !target.empty() && !output.empty()) {
this->SetError(
"Wrong syntax. A TARGET and OUTPUT can not both be specified.");
return false;
}
if (append && output.empty()) {
this->SetError("given APPEND option with no OUTPUT.");
return false;
}
// Make sure the output names and locations are safe.
if (!this->CheckOutputs(output) || !this->CheckOutputs(outputs) ||
!this->CheckOutputs(byproducts)) {
return false;
}
// Check for an append request.
if (append) {
// Lookup an existing command.
if (cmSourceFile* sf =
this->Makefile->GetSourceFileWithOutput(output[0])) {
if (cmCustomCommand* cc = sf->GetCustomCommand()) {
cc->AppendCommands(commandLines);
cc->AppendDepends(depends);
cc->AppendImplicitDepends(implicit_depends);
return true;
}
}
// No command for this output exists.
std::ostringstream e;
e << "given APPEND option with output \"" << output[0]
<< "\" which is not already a custom command output.";
this->SetError(e.str());
return false;
}
// Convert working directory to a full path.
if (!working.empty()) {
const char* build_dir = this->Makefile->GetCurrentBinaryDirectory();
working = cmSystemTools::CollapseFullPath(working, build_dir);
}
// Choose which mode of the command to use.
bool escapeOldStyle = !verbatim;
if (source.empty() && output.empty()) {
// Source is empty, use the target.
std::vector<std::string> no_depends;
this->Makefile->AddCustomCommandToTarget(
target, byproducts, no_depends, commandLines, cctype, comment,
working.c_str(), escapeOldStyle, uses_terminal);
} else if (target.empty()) {
// Target is empty, use the output.
this->Makefile->AddCustomCommandToOutput(
output, byproducts, depends, main_dependency, commandLines, comment,
working.c_str(), false, escapeOldStyle, uses_terminal);
// Add implicit dependency scanning requests if any were given.
if (!implicit_depends.empty()) {
bool okay = false;
if (cmSourceFile* sf =
this->Makefile->GetSourceFileWithOutput(output[0])) {
if (cmCustomCommand* cc = sf->GetCustomCommand()) {
okay = true;
cc->SetImplicitDepends(implicit_depends);
}
}
if (!okay) {
std::ostringstream e;
e << "could not locate source file with a custom command producing \""
<< output[0] << "\" even though this command tried to create it!";
this->SetError(e.str());
return false;
}
}
} else if (!byproducts.empty()) {
this->SetError("BYPRODUCTS may not be specified with SOURCE signatures");
return false;
} else if (uses_terminal) {
this->SetError("USES_TERMINAL may not be used with SOURCE signatures");
return false;
} else {
bool issueMessage = true;
std::ostringstream e;
cmake::MessageType messageType = cmake::AUTHOR_WARNING;
switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0050)) {
case cmPolicies::WARN:
e << cmPolicies::GetPolicyWarning(cmPolicies::CMP0050) << "\n";
break;
case cmPolicies::OLD:
issueMessage = false;
break;
case cmPolicies::REQUIRED_ALWAYS:
case cmPolicies::REQUIRED_IF_USED:
case cmPolicies::NEW:
messageType = cmake::FATAL_ERROR;
break;
}
if (issueMessage) {
e << "The SOURCE signatures of add_custom_command are no longer "
"supported.";
this->Makefile->IssueMessage(messageType, e.str());
if (messageType == cmake::FATAL_ERROR) {
return false;
}
}
// Use the old-style mode for backward compatibility.
this->Makefile->AddCustomCommandOldStyle(target, outputs, depends, source,
commandLines, comment);
}
return true;
}
bool cmAddCustomCommandCommand::CheckOutputs(
const std::vector<std::string>& outputs)
{
for (std::vector<std::string>::const_iterator o = outputs.begin();
o != outputs.end(); ++o) {
// Make sure the file will not be generated into the source
// directory during an out of source build.
if (!this->Makefile->CanIWriteThisFile(o->c_str())) {
std::string e = "attempted to have a file \"" + *o +
"\" in a source directory as an output of custom command.";
this->SetError(e);
cmSystemTools::SetFatalErrorOccured();
return false;
}
// Make sure the output file name has no invalid characters.
std::string::size_type pos = o->find_first_of("#<>");
if (pos != o->npos) {
std::ostringstream msg;
msg << "called with OUTPUT containing a \"" << (*o)[pos]
<< "\". This character is not allowed.";
this->SetError(msg.str());
return false;
}
}
return true;
}