CMake/Source/cmConfigureGccXmlCommand.cxx

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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
2002-01-21 23:30:43 +03:00
Copyright (c) 2002 Insight Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
2002-01-21 23:30:43 +03:00
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.
=========================================================================*/
#include "cmConfigureGccXmlCommand.h"
#include "cmCacheManager.h"
cmConfigureGccXmlCommand::cmConfigureGccXmlCommand()
{
}
cmConfigureGccXmlCommand::~cmConfigureGccXmlCommand()
{
}
// cmConfigureGccXmlCommand
bool cmConfigureGccXmlCommand::InitialPass(std::vector<std::string> const& args)
{
if(args.size() != 2)
{
this->SetError("called with incorrect number of arguments");
return false;
}
// If the cache entry already exists, we are done.
std::string cacheName = args[1];
const char* cacheValue =
m_Makefile->GetDefinition(cacheName.c_str());
if(cacheValue && (std::string(cacheValue) != ""))
{ return true; }
// Get the gccxml support directory location. This is based on the
// executable location.
if(!this->GetSupportDirectory(args[0].c_str()))
{ return false; }
#if defined(_WIN32) && !defined(__CYGWIN__)
// On Windows, we will just look at VcInclude/FLAGS.txt for now.
if(!this->FindVcIncludeFlags())
{ return false; }
#else
// On UNIX, we have to determine which compiler is being used, and
// attempt to use that compiler's support directory.
if(this->CompilerIsGCC())
{
if(!this->FindGccIncludeFlags())
{ return false; }
}
else if(this->CompilerIsMipsPro())
{
if(!this->FindMproIncludeFlags())
{ return false; }
}
else
{
this->SetError("Compiler is not supported by GCC-XML!\n");
return false;
}
#endif
// Add the cache entry with the flags found.
m_Makefile->AddCacheDefinition(
cacheName.c_str(),
m_Flags.c_str(),
"Flags to GCC-XML to get it to parse the native compiler's headers.",
cmCacheManager::STRING);
return true;
}
/**
* Given the location of the GCC-XML executable, find the root of the
* support library tree. Subdirectories of the returned location should
* contain the compiler-specific support libraries.
*/
bool cmConfigureGccXmlCommand::GetSupportDirectory(const char* exeLoc)
{
std::string gccxml = exeLoc;
m_Makefile->ExpandVariablesInString(gccxml);
if(!cmSystemTools::FileExists(gccxml.c_str()))
{
std::string err = "Can't find GCC-XML at given path: ";
err += gccxml;
this->SetError(err.c_str());
return false;
}
std::string dir;
std::string file;
// Get the directory (also converts to unix slashes).
cmSystemTools::SplitProgramPath(gccxml.c_str(), dir, file);
#if !defined(_WIN32) || defined(__CYGWIN__)
// On UNIX platforms, we must replace the "/bin" suffix with
// "/share/GCC_XML". If there is no "/bin" suffix, we will assume
// that the user has put everything in one directory, and not change
// the path.
if(dir.substr(dir.length()-4, 4) == "/bin")
{
dir = dir.substr(0, dir.length()-4) + "/share/GCC_XML";
}
#endif
m_SupportDir = dir;
return true;
}
/**
* Find the flags needed to use the Visual C++ support library.
*/
bool cmConfigureGccXmlCommand::FindVcIncludeFlags()
{
std::string fname = m_SupportDir+"/VcInclude/FLAGS.txt";
std::ifstream flagsFile(fname.c_str());
if(!flagsFile)
{
std::string err = "Cannot open GCC-XML flags file \""+fname+"\".";
this->SetError(err.c_str());
return false;
}
// TODO: Replace this with a real implementation.
char buf[4096];
flagsFile.getline(buf, 4096);
if(!flagsFile)
{
std::string err = "Error reading from GCC-XML flags file \""+fname+"\".";
this->SetError(err.c_str());
return false;
}
m_Flags = buf;
return true;
}
/**
* Find the flags needed to use the GCC support library.
*/
bool cmConfigureGccXmlCommand::FindGccIncludeFlags()
{
std::string supportDir = m_SupportDir+"/GccInclude";
if(!cmSystemTools::FileIsDirectory(supportDir.c_str()))
{
std::string err = "No GCC support library for GCC-XML. Couldn't find directory \""+supportDir+"\".";
this->SetError(err.c_str());
return false;
}
// Try to run the find_gcc_options command.
std::string command = supportDir+"/find_gcc_options";
std::string flags;
if(!cmSystemTools::RunCommand(command.c_str(), flags))
{
this->SetError("Could not run find_gcc_options!");
return false;
}
// Strip newline from end of flags.
if((flags.length() > 0)
&& (flags[flags.length()-1] == '\n'))
{
flags = flags.substr(0, flags.length()-1);
if((flags.length() > 0)
&& (flags[flags.length()-1] == '\r'))
{
flags = flags.substr(0, flags.length()-1);
}
}
// Use the result of the command as the flags.
m_Flags = flags;
return true;
}
/**
* Find the flags needed to use the MIPSpro support library.
*/
bool cmConfigureGccXmlCommand::FindMproIncludeFlags()
{
std::string supportDir = m_SupportDir+"/MproInclude";
if(!cmSystemTools::FileIsDirectory(supportDir.c_str()))
{
std::string err = "No MIPSpro support library for GCC-XML. Couldn't find directory \""+supportDir+"\".";
this->SetError(err.c_str());
return false;
}
// Try to run the find_mpro_options command.
std::string command = supportDir+"/find_mpro_options";
std::string flags;
if(!cmSystemTools::RunCommand(command.c_str(), flags))
{
this->SetError("Could not run find_mpro_options!");
return false;
}
// Strip newline from end of flags.
if((flags.length() > 0)
&& (flags[flags.length()-1] == '\n'))
{
flags = flags.substr(0, flags.length()-1);
if((flags.length() > 0)
&& (flags[flags.length()-1] == '\r'))
{
flags = flags.substr(0, flags.length()-1);
}
}
// Use the result of the command as the flags.
m_Flags = flags;
return true;
}
/**
* Determine whether the compiler is GCC.
*/
bool cmConfigureGccXmlCommand::CompilerIsGCC() const
{
const char* isGNU = m_Makefile->GetDefinition("CMAKE_COMPILER_IS_GNUCXX");
return (isGNU && !cmSystemTools::IsOff(isGNU));
}
/**
* Determine whether the compiler is MipsPro.
*/
bool cmConfigureGccXmlCommand::CompilerIsMipsPro() const
{
const char* compiler = m_Makefile->GetDefinition("CMAKE_CXX_COMPILER");
if(!compiler) { return false; }
std::string command = compiler;
command += " -version 2>&1";
std::string output;
if(!cmSystemTools::RunCommand(command.c_str(), output, false))
{ return false; }
if(output.find("MIPSpro") != std::string::npos)
{
return true;
}
return false;
}