CMake/Source/cmFindBase.cxx

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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
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 "cmFindBase.h"
cmFindBase::cmFindBase()
{
this->AlreadyInCache = false;
this->AlreadyInCacheWithoutMetaInfo = false;
this->NoDefaultPath = false;
this->NoCMakePath = false;
this->NoCMakeEnvironmentPath = false;
this->NoSystemEnvironmentPath = false;
this->NoCMakeSystemPath = false;
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// default is to search frameworks first on apple
#if defined(__APPLE__)
this->SearchFrameworkFirst = true;
this->SearchAppBundleFirst = true;
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#else
this->SearchFrameworkFirst = false;
this->SearchAppBundleFirst = false;
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#endif
this->SearchFrameworkOnly = false;
this->SearchFrameworkLast = false;
this->SearchAppBundleOnly = false;
this->SearchAppBundleLast = false;
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this->GenericDocumentation =
" FIND_XXX(<VAR> name1 path1 path2 ...)\n"
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"This is the short-hand signature for the command that "
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"is sufficient in many cases. It is the same "
"as FIND_XXX(<VAR> name1 PATHS path2 path2 ...)\n"
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" FIND_XXX(\n"
" <VAR> \n"
" name | NAMES name1 [name2 ...]\n"
" PATHS path1 [path2 ... ENV var]\n"
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" [PATH_SUFFIXES suffix1 [suffix2 ...]]\n"
" [DOC \"cache documentation string\"]\n"
" [NO_DEFAULT_PATH]\n"
" [NO_CMAKE_ENVIRONMENT_PATH]\n"
" [NO_CMAKE_PATH]\n"
" [NO_SYSTEM_ENVIRONMENT_PATH]\n"
" [NO_CMAKE_SYSTEM_PATH]\n"
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" )\n"
""
"This command is used to find a SEARCH_XXX_DESC. "
"A cache entry named by <VAR> is created to store the result "
"of this command. "
"If the SEARCH_XXX is found the result is stored in the variable "
"and the search will not be repeated unless the variable is cleared. "
"If nothing is found, the result will be "
"<VAR>-NOTFOUND, and the search will be attempted again the "
"next time FIND_XXX is invoked with the same variable. "
"The name of the SEARCH_XXX that "
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"is searched for is specified by the names listed "
"after the NAMES argument. Additional search locations "
"can be specified after the PATHS argument. If ENV var is "
"found in the PATHS section the environment variable var "
"will be read and converted from a system environment variable to "
"a cmake style list of paths. For example ENV PATH would be a way "
"to list the system path variable. The argument "
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"after DOC will be used for the documentation string in "
"the cache. PATH_SUFFIXES can be used to give sub directories "
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"that will be appended to the search paths.\n"
"If NO_DEFAULT_PATH is specified, then no additional paths are "
"added to the search. "
"If NO_DEFAULT_PATH is not specified, the search process is as follows:\n"
"1. Search cmake specific environment variables. This "
"can be skipped if NO_CMAKE_ENVIRONMENT_PATH is passed.\n"
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""
" CMAKE_FRAMEWORK_PATH\n"
" CMAKE_APPBUNDLE_PATH\n"
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" CMAKE_XXX_PATH\n"
"2. Search cmake variables with the same names as "
"the cmake specific environment variables. These "
"are intended to be used on the command line with a "
"-DVAR=value. This can be skipped if NO_CMAKE_PATH "
"is passed.\n"
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""
" CMAKE_FRAMEWORK_PATH\n"
" CMAKE_APPBUNDLE_PATH\n"
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" CMAKE_XXX_PATH\n"
"3. Search the standard system environment variables. "
"This can be skipped if NO_SYSTEM_ENVIRONMENT_PATH is an argument.\n"
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" PATH\n"
" XXX_SYSTEM\n" // replace with "", LIB, or INCLUDE
"4. Search cmake variables defined in the Platform files "
"for the current system. This can be skipped if NO_CMAKE_SYSTEM_PATH "
"is passed.\n"
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" CMAKE_SYSTEM_FRAMEWORK_PATH\n"
" CMAKE_SYSTEM_APPBUNDLE_PATH\n"
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" CMAKE_SYSTEM_XXX_PATH\n"
"5. Search the paths specified after PATHS or in the short-hand version "
"of the command.\n"
"On Darwin or systems supporting OSX Frameworks, the cmake variable"
" CMAKE_FIND_FRAMEWORK can be set to empty or one of the following:\n"
" \"FIRST\" - Try to find frameworks before standard\n"
" libraries or headers. This is the default on Darwin.\n"
" \"LAST\" - Try to find frameworks after standard\n"
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" libraries or headers.\n"
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" \"ONLY\" - Only try to find frameworks.\n"
" \"NEVER\". - Never try to find frameworks.\n"
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"On Darwin or systems supporting OSX Application Bundles, the cmake "
"variable CMAKE_FIND_APPBUNDLE can be set to empty or one of the "
"following:\n"
" \"FIRST\" - Try to find application bundles before standard\n"
" programs. This is the default on Darwin.\n"
" \"LAST\" - Try to find application bundles after standard\n"
" programs.\n"
" \"ONLY\" - Only try to find application bundles.\n"
" \"NEVER\". - Never try to find application bundles.\n"
"The reason the paths listed in the call to the command are searched "
"last is that most users of CMake would expect things to be found "
"first in the locations specified by their environment. Projects may "
"override this behavior by simply calling the command twice:\n"
" FIND_XXX(<VAR> NAMES name PATHS paths NO_DEFAULT_PATH)\n"
" FIND_XXX(<VAR> NAMES name)\n"
"Once one of these calls succeeds the result variable will be set "
"and stored in the cache so that neither call will search again.";
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}
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bool cmFindBase::ParseArguments(std::vector<std::string> const& argsIn)
{
if(argsIn.size() < 2 )
{
this->SetError("called with incorrect number of arguments");
return false;
}
std::string ff = this->Makefile->GetSafeDefinition("CMAKE_FIND_FRAMEWORK");
if(ff == "NEVER")
{
this->SearchFrameworkLast = false;
this->SearchFrameworkFirst = false;
this->SearchFrameworkOnly = false;
}
else if (ff == "ONLY")
{
this->SearchFrameworkLast = false;
this->SearchFrameworkFirst = false;
this->SearchFrameworkOnly = true;
}
else if (ff == "FIRST")
{
this->SearchFrameworkLast = false;
this->SearchFrameworkFirst = true;
this->SearchFrameworkOnly = false;
}
else if (ff == "LAST")
{
this->SearchFrameworkLast = true;
this->SearchFrameworkFirst = false;
this->SearchFrameworkOnly = false;
}
std::string fab = this->Makefile->GetSafeDefinition("CMAKE_FIND_APPBUNDLE");
if(fab == "NEVER")
{
this->SearchAppBundleLast = false;
this->SearchAppBundleFirst = false;
this->SearchAppBundleOnly = false;
}
else if (fab == "ONLY")
{
this->SearchAppBundleLast = false;
this->SearchAppBundleFirst = false;
this->SearchAppBundleOnly = true;
}
else if (fab == "FIRST")
{
this->SearchAppBundleLast = false;
this->SearchAppBundleFirst = true;
this->SearchAppBundleOnly = false;
}
else if (fab == "LAST")
{
this->SearchAppBundleLast = true;
this->SearchAppBundleFirst = false;
this->SearchAppBundleOnly = false;
}
// CMake versions below 2.3 did not search all these extra
// locations. Preserve compatibility unless a modern argument is
// passed.
bool compatibility = false;
const char* versionValue =
this->Makefile->GetDefinition("CMAKE_BACKWARDS_COMPATIBILITY");
int major = 0;
int minor = 0;
if(versionValue && sscanf(versionValue, "%d.%d", &major, &minor) != 2)
{
versionValue = 0;
}
if(versionValue && (major < 2 || major == 2 && minor < 3))
{
compatibility = true;
}
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// copy argsIn into args so it can be modified,
// in the process extract the DOC "documentation"
size_t size = argsIn.size();
std::vector<std::string> args;
bool foundDoc = false;
for(unsigned int j = 0; j < size; ++j)
{
if(foundDoc || argsIn[j] != "DOC" )
{
if(argsIn[j] == "ENV")
{
if(j+1 < size)
{
j++;
cmSystemTools::GetPath(args, argsIn[j].c_str());
}
}
else
{
args.push_back(argsIn[j]);
}
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}
else
{
if(j+1 < size)
{
foundDoc = true;
this->VariableDocumentation = argsIn[j+1];
j++;
if(j >= size)
{
break;
}
}
}
}
this->VariableName = args[0];
if(this->CheckForVariableInCache())
{
this->AlreadyInCache = true;
return true;
}
this->AlreadyInCache = false;
std::vector<std::string> userPaths;
std::string doc;
bool doingNames = true; // assume it starts with a name
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bool doingPaths = false;
bool doingPathSuf = false;
bool newStyle = false;
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for (unsigned int j = 1; j < args.size(); ++j)
{
if(args[j] == "NAMES")
{
doingNames = true;
newStyle = true;
doingPathSuf = false;
doingPaths = false;
}
else if (args[j] == "PATHS")
{
doingPaths = true;
newStyle = true;
doingNames = false;
doingPathSuf = false;
}
else if (args[j] == "PATH_SUFFIXES")
{
compatibility = false;
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doingPathSuf = true;
newStyle = true;
doingNames = false;
doingPaths = false;
}
else if (args[j] == "NO_SYSTEM_PATH")
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{
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doingPaths = false;
doingPathSuf = false;
doingNames = false;
this->NoDefaultPath = true;
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}
else if (args[j] == "NO_DEFAULT_PATH")
{
compatibility = false;
doingPaths = false;
doingPathSuf = false;
doingNames = false;
this->NoDefaultPath = true;
}
else if (args[j] == "NO_CMAKE_ENVIRONMENT_PATH")
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{
compatibility = false;
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doingPaths = false;
doingPathSuf = false;
doingNames = false;
this->NoCMakeEnvironmentPath = true;
}
else if (args[j] == "NO_CMAKE_PATH")
{
compatibility = false;
doingPaths = false;
doingPathSuf = false;
doingNames = false;
this->NoCMakePath = true;
}
else if (args[j] == "NO_SYSTEM_ENVIRONMENT_PATH")
{
compatibility = false;
doingPaths = false;
doingPathSuf = false;
doingNames = false;
this->NoSystemEnvironmentPath = true;
}
else if (args[j] == "NO_CMAKE_SYSTEM_PATH")
{
compatibility = false;
doingPaths = false;
doingPathSuf = false;
doingNames = false;
this->NoCMakeSystemPath = true;
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}
else
{
if(doingNames)
{
this->Names.push_back(args[j]);
}
else if(doingPaths)
{
userPaths.push_back(args[j]);
}
else if(doingPathSuf)
{
this->SearchPathSuffixes.push_back(args[j]);
}
}
}
// Now that arguments have been parsed check the compatibility
// setting. If we need to be compatible with CMake 2.2 and earlier
// do not add the CMake system paths. It is safe to add the CMake
// environment paths and system environment paths because that
// existed in 2.2. It is safe to add the CMake user variable paths
// because the user or project has explicitly set them.
if(compatibility)
{
this->NoCMakeSystemPath = true;
}
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if(this->VariableDocumentation.size() == 0)
{
this->VariableDocumentation = "Whare can ";
if(this->Names.size() == 0)
{
this->VariableDocumentation += "the (unknown) library be found";
}
else if(this->Names.size() == 1)
{
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this->VariableDocumentation += "the "
+ this->Names[0] + " library be found";
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}
else
{
this->VariableDocumentation += "one of the " + this->Names[0];
for (unsigned int j = 1; j < this->Names.size() - 1; ++j)
{
this->VariableDocumentation += ", " + this->Names[j];
}
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this->VariableDocumentation += " or "
+ this->Names[this->Names.size() - 1] + " libraries be found";
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}
}
// look for old style
// FIND_*(VAR name path1 path2 ...)
if(!newStyle)
{
this->Names.clear(); // clear out any values in Names
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this->Names.push_back(args[1]);
for(unsigned int j = 2; j < args.size(); ++j)
{
userPaths.push_back(args[j]);
}
}
this->ExpandPaths(userPaths);
return true;
}
void cmFindBase::ExpandPaths(std::vector<std::string> userPaths)
{
// if NO Default paths was not specified add the
// standard search paths.
if(!this->NoDefaultPath)
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{
if(this->SearchFrameworkFirst)
{
this->AddFrameWorkPaths();
}
if(this->SearchAppBundleFirst)
{
this->AddAppBundlePaths();
}
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if(!this->NoCMakeEnvironmentPath &&
!(this->SearchFrameworkOnly || this->SearchAppBundleOnly))
{
// Add CMAKE_*_PATH environment variables
this->AddEnvironmentVairables();
}
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if(!this->NoCMakePath &&
!(this->SearchFrameworkOnly || this->SearchAppBundleOnly))
{
// Add CMake varibles of the same name as the previous environment
// varibles CMAKE_*_PATH to be used most of the time with -D
// command line options
this->AddCMakeVairables();
}
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if(!this->NoSystemEnvironmentPath &&
!(this->SearchFrameworkOnly || this->SearchAppBundleOnly))
{
// add System environment PATH and (LIB or INCLUDE)
this->AddSystemEnvironmentVairables();
}
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if(!this->NoCMakeSystemPath &&
!(this->SearchFrameworkOnly || this->SearchAppBundleOnly))
{
// Add CMAKE_SYSTEM_*_PATH variables which are defined in platform files
this->AddCMakeSystemVariables();
}
if(this->SearchAppBundleLast)
{
this->AddAppBundlePaths();
}
if(this->SearchFrameworkLast)
{
this->AddFrameWorkPaths();
}
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}
// add the paths specified in the FIND_* call
for(unsigned int i =0; i < userPaths.size(); ++i)
{
this->SearchPaths.push_back(userPaths[i]);
}
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// clean things up
this->ExpandRegistryAndCleanPath();
}
void cmFindBase::AddEnvironmentVairables()
{
std::string var = "CMAKE_";
var += this->CMakePathName;
var += "_PATH";
cmSystemTools::GetPath(this->SearchPaths, var.c_str());
if(this->SearchAppBundleLast)
{
cmSystemTools::GetPath(this->SearchPaths, "CMAKE_APPBUNDLE_PATH");
}
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if(this->SearchFrameworkLast)
{
cmSystemTools::GetPath(this->SearchPaths, "CMAKE_FRAMEWORK_PATH");
}
}
void cmFindBase::AddFrameWorkPaths()
{
if(this->NoDefaultPath)
{
return;
}
// first environment variables
if(!this->NoCMakeEnvironmentPath)
{
cmSystemTools::GetPath(this->SearchPaths, "CMAKE_FRAMEWORK_PATH");
}
// add cmake variables
if(!this->NoCMakePath)
{
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if(const char* path =
this->Makefile->GetDefinition("CMAKE_FRAMEWORK_PATH"))
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{
cmSystemTools::ExpandListArgument(path, this->SearchPaths);
}
}
// AddCMakeSystemVariables
if(!this->NoCMakeSystemPath)
{
if(const char* path =
this->Makefile->GetDefinition("CMAKE_SYSTEM_FRAMEWORK_PATH"))
{
cmSystemTools::ExpandListArgument(path, this->SearchPaths);
}
}
}
void cmFindBase::AddAppBundlePaths()
{
if(this->NoDefaultPath)
{
return;
}
// first environment variables
if(!this->NoCMakeEnvironmentPath)
{
cmSystemTools::GetPath(this->SearchPaths, "CMAKE_APPBUNDLE_PATH");
}
// add cmake variables
if(!this->NoCMakePath)
{
if(const char* path =
this->Makefile->GetDefinition("CMAKE_APPBUNDLE_PATH"))
{
cmSystemTools::ExpandListArgument(path, this->SearchPaths);
}
}
// AddCMakeSystemVariables
if(!this->NoCMakeSystemPath)
{
if(const char* path =
this->Makefile->GetDefinition("CMAKE_SYSTEM_APPBUNDLE_PATH"))
{
cmSystemTools::ExpandListArgument(path, this->SearchPaths);
}
}
}
void cmFindBase::AddCMakeVairables()
{
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std::string var = "CMAKE_";
var += this->CMakePathName;
var += "_PATH";
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if(const char* path = this->Makefile->GetDefinition(var.c_str()))
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{
cmSystemTools::ExpandListArgument(path, this->SearchPaths);
}
if(this->SearchAppBundleLast)
{
if(const char* path =
this->Makefile->GetDefinition("CMAKE_APPBUNDLE_PATH"))
{
cmSystemTools::ExpandListArgument(path, this->SearchPaths);
}
}
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if(this->SearchFrameworkLast)
{
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if(const char* path =
this->Makefile->GetDefinition("CMAKE_FRAMEWORK_PATH"))
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{
cmSystemTools::ExpandListArgument(path, this->SearchPaths);
}
}
}
void cmFindBase::AddSystemEnvironmentVairables()
{
// Add LIB or INCLUDE
if(this->EnvironmentPath.size())
{
cmSystemTools::GetPath(this->SearchPaths, this->EnvironmentPath.c_str());
}
// Add PATH
cmSystemTools::GetPath(this->SearchPaths);
}
void cmFindBase::AddCMakeSystemVariables()
{
std::string var = "CMAKE_SYSTEM_";
var += this->CMakePathName;
var += "_PATH";
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if(const char* path = this->Makefile->GetDefinition(var.c_str()))
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{
cmSystemTools::ExpandListArgument(path, this->SearchPaths);
}
if(this->SearchAppBundleLast)
{
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if(const char* path =
this->Makefile->GetDefinition("CMAKE_SYSTEM_APPBUNDLE_PATH"))
{
cmSystemTools::ExpandListArgument(path, this->SearchPaths);
}
}
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if(this->SearchFrameworkLast)
{
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if(const char* path =
this->Makefile->GetDefinition("CMAKE_SYSTEM_FRAMEWORK_PATH"))
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{
cmSystemTools::ExpandListArgument(path, this->SearchPaths);
}
}
}
void cmFindBase::ExpandRegistryAndCleanPath()
{
std::vector<std::string> finalPath;
std::vector<std::string>::iterator i;
for(i = this->SearchPaths.begin();
i != this->SearchPaths.end(); ++i)
{
cmSystemTools::ExpandRegistryValues(*i);
cmSystemTools::GlobDirs(i->c_str(), finalPath);
}
this->SearchPaths.clear();
// convert all paths to unix slashes
for(i = finalPath.begin();
i != finalPath.end(); ++i)
{
cmSystemTools::ConvertToUnixSlashes(*i);
// copy each finalPath combined with SearchPathSuffixes
// to the SearchPaths ivar
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for(std::vector<std::string>::iterator j =
this->SearchPathSuffixes.begin();
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j != this->SearchPathSuffixes.end(); ++j)
{
std::string p = *i + std::string("/") + *j;
if(cmSystemTools::FileIsDirectory(p.c_str()))
{
this->SearchPaths.push_back(p);
}
}
}
// now put the path without the path suffixes in the SearchPaths
for(i = finalPath.begin();
i != finalPath.end(); ++i)
{
if(cmSystemTools::FileIsDirectory(i->c_str()))
{
this->SearchPaths.push_back(*i);
}
}
}
void cmFindBase::PrintFindStuff()
{
std::cerr << "SearchFrameworkLast: " << this->SearchFrameworkLast << "\n";
std::cerr << "SearchFrameworkOnly: " << this->SearchFrameworkOnly << "\n";
std::cerr << "SearchFrameworkFirst: " << this->SearchFrameworkFirst << "\n";
std::cerr << "SearchAppBundleLast: " << this->SearchAppBundleLast << "\n";
std::cerr << "SearchAppBundleOnly: " << this->SearchAppBundleOnly << "\n";
std::cerr << "SearchAppBundleFirst: " << this->SearchAppBundleFirst << "\n";
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std::cerr << "VariableName " << this->VariableName << "\n";
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std::cerr << "VariableDocumentation "
<< this->VariableDocumentation << "\n";
std::cerr << "NoDefaultPath " << this->NoDefaultPath << "\n";
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std::cerr << "NoCMakeEnvironmentPath "
<< this->NoCMakeEnvironmentPath << "\n";
std::cerr << "NoCMakePath " << this->NoCMakePath << "\n";
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std::cerr << "NoSystemEnvironmentPath "
<< this->NoSystemEnvironmentPath << "\n";
std::cerr << "NoCMakeSystemPath " << this->NoCMakeSystemPath << "\n";
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std::cerr << "EnvironmentPath " << this->EnvironmentPath << "\n";
std::cerr << "CMakePathName " << this->CMakePathName << "\n";
std::cerr << "Names ";
for(unsigned int i =0; i < this->Names.size(); ++i)
{
std::cerr << this->Names[i] << " ";
}
std::cerr << "\n";
std::cerr << "\n";
std::cerr << "SearchPathSuffixes ";
for(unsigned int i =0; i < this->SearchPathSuffixes.size(); ++i)
{
std::cerr << this->SearchPathSuffixes[i] << "\n";
}
std::cerr << "\n";
std::cerr << "SearchPaths\n";
for(unsigned int i =0; i < this->SearchPaths.size(); ++i)
{
std::cerr << "[" << this->SearchPaths[i] << "]\n";
}
}
bool cmFindBase::CheckForVariableInCache()
{
if(const char* cacheValue =
this->Makefile->GetDefinition(this->VariableName.c_str()))
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{
cmCacheManager::CacheIterator it =
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this->Makefile->GetCacheManager()->
GetCacheIterator(this->VariableName.c_str());
bool found = !cmSystemTools::IsNOTFOUND(cacheValue);
bool cached = !it.IsAtEnd();
if(found)
{
// If the user specifies the entry on the command line without a
// type we should add the type and docstring but keep the
// original value. Tell the subclass implementations to do
// this.
if(cached && it.GetType() == cmCacheManager::UNINITIALIZED)
{
this->AlreadyInCacheWithoutMetaInfo = true;
}
return true;
}
else if(cached)
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{
const char* hs = it.GetProperty("HELPSTRING");
this->VariableDocumentation = hs?hs:"(none)";
}
}
return false;
}