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BUG: Preserve symlinks during installation. This addresses bug#4384.

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This commit is contained in:
Brad King 2007-03-12 14:15:25 -04:00
parent e01cdf2065
commit e105c7fedc
1 changed files with 68 additions and 0 deletions
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68
Source/cmFileCommand.cxx
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@ -474,8 +474,64 @@ public:
}
return true;
}
private:
bool InstallSymlink(const char* fromFile, const char* toFile, bool always);
};
//----------------------------------------------------------------------------
bool cmFileInstaller::InstallSymlink(const char* fromFile, const char* toFile,
bool always)
{
// Inform the user about this file installation.
std::string message = "Installing ";
message += toFile;
this->Makefile->DisplayStatus(message.c_str(), -1);
// Read the original symlink.
std::string symlinkTarget;
if(!cmSystemTools::ReadSymlink(fromFile, symlinkTarget))
{
cmOStringStream e;
e << "INSTALL cannot read symlink \"" << fromFile
<< "\" to duplicate at \"" << toFile << "\".";
this->FileCommand->SetError(e.str().c_str());
return false;
}
// Compare the symlink value to that at the destination if not
// always installing.
if(!always)
{
std::string oldSymlinkTarget;
if(cmSystemTools::ReadSymlink(toFile, oldSymlinkTarget))
{
if(symlinkTarget == oldSymlinkTarget)
{
return true;
}
}
}
// Remove the destination file so we can always create the symlink.
cmSystemTools::RemoveFile(toFile);
// Create the symlink.
if(!cmSystemTools::CreateSymlink(symlinkTarget.c_str(), toFile))
{
cmOStringStream e;
e << "INSTALL cannot duplicate symlink \"" << fromFile
<< "\" at \"" << toFile << "\".";
this->FileCommand->SetError(e.str().c_str());
return false;
}
// Add the file to the manifest.
this->ManifestAppend(toFile);
return true;
}
//----------------------------------------------------------------------------
bool cmFileInstaller::InstallFile(const char* fromFile, const char* toFile,
bool always)
@ -489,6 +545,12 @@ bool cmFileInstaller::InstallFile(const char* fromFile, const char* toFile,
return true;
}
// Short-circuit for symbolic links.
if(cmSystemTools::FileIsSymlink(fromFile))
{
return this->InstallSymlink(fromFile, toFile, always);
}
// Inform the user about this file installation.
std::string message = "Installing ";
message += toFile;
@ -541,6 +603,12 @@ bool cmFileInstaller::InstallDirectory(const char* source,
return true;
}
// Short-circuit for symbolic links.
if(cmSystemTools::FileIsSymlink(source))
{
return this->InstallSymlink(source, destination, always);
}
// Inform the user about this directory installation.
std::string message = "Installing ";
message += destination;