CMake/Source/cmFindBase.cxx

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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
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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.
============================================================================*/
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#include "cmFindBase.h"
cmFindBase::cmFindBase()
{
this->AlreadyInCache = false;
this->AlreadyInCacheWithoutMetaInfo = false;
}
//----------------------------------------------------------------------------
void cmFindBase::GenerateDocumentation()
{
this->cmFindCommon::GenerateDocumentation();
cmSystemTools::ReplaceString(this->GenericDocumentationPathsOrder,
"FIND_ARGS_XXX", "<VAR> NAMES name");
this->GenericDocumentation =
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" 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 "
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"as FIND_XXX(<VAR> name1 [PATHS path1 path2 ...])\n"
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" FIND_XXX(\n"
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" <VAR>\n"
" name | NAMES name1 [name2 ...]\n"
" [HINTS path1 [path2 ... ENV var]]\n"
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" [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"
" [CMAKE_FIND_ROOT_PATH_BOTH |\n"
" ONLY_CMAKE_FIND_ROOT_PATH |\n"
" NO_CMAKE_FIND_ROOT_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 HINTS or 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 specifies additional subdirectories to check below "
"each search path."
"\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 paths specified in cmake-specific cache 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"
"XXX_EXTRA_PREFIX_ENTRY"
" <prefix>/XXX_SUBDIR for each <prefix> in CMAKE_PREFIX_PATH\n"
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" CMAKE_XXX_PATH\n"
" CMAKE_XXX_MAC_PATH\n"
"2. Search paths specified in cmake-specific environment variables. "
"These are intended to be set in the user's shell configuration. "
"This can be skipped if NO_CMAKE_ENVIRONMENT_PATH is passed.\n"
"XXX_EXTRA_PREFIX_ENTRY"
" <prefix>/XXX_SUBDIR for each <prefix> in CMAKE_PREFIX_PATH\n"
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" CMAKE_XXX_PATH\n"
" CMAKE_XXX_MAC_PATH\n"
"3. Search the paths specified by the HINTS option. "
"These should be paths computed by system introspection, such as a "
"hint provided by the location of another item already found. "
"Hard-coded guesses should be specified with the PATHS option.\n"
"4. 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
"5. Search cmake variables defined in the Platform files "
"for the current system. This can be skipped if NO_CMAKE_SYSTEM_PATH "
"is passed.\n"
"XXX_EXTRA_PREFIX_ENTRY"
" <prefix>/XXX_SUBDIR for each <prefix> in CMAKE_SYSTEM_PREFIX_PATH\n"
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" CMAKE_SYSTEM_XXX_PATH\n"
" CMAKE_SYSTEM_XXX_MAC_PATH\n"
"6. Search the paths specified by the PATHS option "
"or in the short-hand version of the command. "
"These are typically hard-coded guesses.\n"
;
this->GenericDocumentation += this->GenericDocumentationMacPolicy;
this->GenericDocumentation += this->GenericDocumentationRootPath;
this->GenericDocumentation += this->GenericDocumentationPathsOrder;
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}
//----------------------------------------------------------------------------
const char* cmFindBase::GetFullDocumentation() const
{
if(this->GenericDocumentation.empty())
{
const_cast<cmFindBase *>(this)->GenerateDocumentation();
}
return this->GenericDocumentation.c_str();
}
//----------------------------------------------------------------------------
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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;
}
// CMake versions below 2.3 did not search all these extra
// locations. Preserve compatibility unless a modern argument is
// passed.
bool compatibility = this->Makefile->NeedBackwardsCompatibility(2,3);
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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;
}
}
}
}
if(args.size() < 2 )
{
this->SetError("called with incorrect number of arguments");
return false;
}
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this->VariableName = args[0];
if(this->CheckForVariableInCache())
{
this->AlreadyInCache = true;
return true;
}
this->AlreadyInCache = false;
// Find the current root path mode.
this->SelectDefaultRootPathMode();
// Find the current bundle/framework search policy.
this->SelectDefaultMacMode();
ENH: merge CMake-CrossCompileBasic to HEAD -add a RESULT_VARIABLE to INCLUDE() -add CMAKE_TOOLCHAIN_FILE for specifiying your (potentially crosscompiling) toolchain -have TRY_RUN() complain if you try to use it in crosscompiling mode (which were compiled but cannot run on this system) -use CMAKE_EXECUTABLE_SUFFIX in TRY_RUN(), probably TRY_RUN won't be able to run the executables if they have a different suffix because they are probably crosscompiled, but nevertheless it should be able to find them -make several cmake variables presettable by the user: CMAKE_C/CXX_COMPILER, CMAKE_C/CXX_OUTPUT_EXTENSION, CMAKE_SYSTEM_NAME, CMAKE_SYSTEM_INFO_FILE -support prefix for GNU toolchains (arm-elf-gcc, arm-elf-ar, arm-elf-strip etc.) -move ranlib on OSX from the file command to a command in executed in cmake_install.cmake -add support for stripping during install in cmake_install.cmake -split out cl.cmake from Windows-cl.cmake, first (very incomplete) step to support MS crosscompiling tools -remove stdio.h from the simple C program which checks if the compiler works, since this may not exist for some embedded platforms -create a new CMakeFindBinUtils.cmake which collects the search fro ar, ranlib, strip, ld, link, install_name_tool and other tools like these -add support for CMAKE_FIND_ROOT_PATH for all FIND_XXX commands, which is a list of directories which will be prepended to all search directories, right now as a cmake variable, turning it into a global cmake property may need some more work -remove cmTestTestHandler::TryExecutable(), it's unused -split cmFileCommand::HandleInstall() into slightly smaller functions Alex
2007-05-17 21:20:44 +04:00
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bool newStyle = false;
enum Doing { DoingNone, DoingNames, DoingPaths, DoingPathSuffixes,
DoingHints };
Doing doing = DoingNames; // assume it starts with a name
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for (unsigned int j = 1; j < args.size(); ++j)
{
if(args[j] == "NAMES")
{
doing = DoingNames;
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newStyle = true;
}
else if (args[j] == "PATHS")
{
doing = DoingPaths;
newStyle = true;
}
else if (args[j] == "HINTS")
{
doing = DoingHints;
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newStyle = true;
}
else if (args[j] == "PATH_SUFFIXES")
{
doing = DoingPathSuffixes;
compatibility = false;
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newStyle = true;
}
else if (args[j] == "NO_SYSTEM_PATH")
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{
doing = DoingNone;
this->NoDefaultPath = true;
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}
else if (this->CheckCommonArgument(args[j]))
{
doing = DoingNone;
compatibility = false;
// Some common arguments were accidentally supported by CMake
// 2.4 and 2.6.0 in the short-hand form of the command, so we
// must support it even though it is not documented.
ENH: merge CMake-CrossCompileBasic to HEAD -add a RESULT_VARIABLE to INCLUDE() -add CMAKE_TOOLCHAIN_FILE for specifiying your (potentially crosscompiling) toolchain -have TRY_RUN() complain if you try to use it in crosscompiling mode (which were compiled but cannot run on this system) -use CMAKE_EXECUTABLE_SUFFIX in TRY_RUN(), probably TRY_RUN won't be able to run the executables if they have a different suffix because they are probably crosscompiled, but nevertheless it should be able to find them -make several cmake variables presettable by the user: CMAKE_C/CXX_COMPILER, CMAKE_C/CXX_OUTPUT_EXTENSION, CMAKE_SYSTEM_NAME, CMAKE_SYSTEM_INFO_FILE -support prefix for GNU toolchains (arm-elf-gcc, arm-elf-ar, arm-elf-strip etc.) -move ranlib on OSX from the file command to a command in executed in cmake_install.cmake -add support for stripping during install in cmake_install.cmake -split out cl.cmake from Windows-cl.cmake, first (very incomplete) step to support MS crosscompiling tools -remove stdio.h from the simple C program which checks if the compiler works, since this may not exist for some embedded platforms -create a new CMakeFindBinUtils.cmake which collects the search fro ar, ranlib, strip, ld, link, install_name_tool and other tools like these -add support for CMAKE_FIND_ROOT_PATH for all FIND_XXX commands, which is a list of directories which will be prepended to all search directories, right now as a cmake variable, turning it into a global cmake property may need some more work -remove cmTestTestHandler::TryExecutable(), it's unused -split cmFileCommand::HandleInstall() into slightly smaller functions Alex
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}
else if(doing == DoingNames)
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{
this->Names.push_back(args[j]);
}
else if(doing == DoingPaths)
{
this->AddUserPath(args[j], this->UserPaths);
}
else if(doing == DoingHints)
{
this->AddUserPath(args[j], this->UserHints);
}
else if(doing == DoingPathSuffixes)
{
this->AddPathSuffix(args[j]);
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}
}
// 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)
{
ENH: merge CMake-CrossCompileBasic to HEAD -add a RESULT_VARIABLE to INCLUDE() -add CMAKE_TOOLCHAIN_FILE for specifiying your (potentially crosscompiling) toolchain -have TRY_RUN() complain if you try to use it in crosscompiling mode (which were compiled but cannot run on this system) -use CMAKE_EXECUTABLE_SUFFIX in TRY_RUN(), probably TRY_RUN won't be able to run the executables if they have a different suffix because they are probably crosscompiled, but nevertheless it should be able to find them -make several cmake variables presettable by the user: CMAKE_C/CXX_COMPILER, CMAKE_C/CXX_OUTPUT_EXTENSION, CMAKE_SYSTEM_NAME, CMAKE_SYSTEM_INFO_FILE -support prefix for GNU toolchains (arm-elf-gcc, arm-elf-ar, arm-elf-strip etc.) -move ranlib on OSX from the file command to a command in executed in cmake_install.cmake -add support for stripping during install in cmake_install.cmake -split out cl.cmake from Windows-cl.cmake, first (very incomplete) step to support MS crosscompiling tools -remove stdio.h from the simple C program which checks if the compiler works, since this may not exist for some embedded platforms -create a new CMakeFindBinUtils.cmake which collects the search fro ar, ranlib, strip, ld, link, install_name_tool and other tools like these -add support for CMAKE_FIND_ROOT_PATH for all FIND_XXX commands, which is a list of directories which will be prepended to all search directories, right now as a cmake variable, turning it into a global cmake property may need some more work -remove cmTestTestHandler::TryExecutable(), it's unused -split cmFileCommand::HandleInstall() into slightly smaller functions Alex
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this->VariableDocumentation = "Where can ";
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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)
{
// All the short-hand arguments have been recorded as names.
std::vector<std::string> shortArgs = this->Names;
this->Names.clear(); // clear out any values in Names
this->Names.push_back(shortArgs[0]);
for(unsigned int j = 1; j < shortArgs.size(); ++j)
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{
this->AddUserPath(shortArgs[j], this->UserPaths);
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}
}
this->ExpandPaths();
// Filter out ignored paths from the prefix list
std::set<std::string> ignored;
this->GetIgnoredPaths(ignored);
this->FilterPaths(this->SearchPaths, ignored);
this->ComputeFinalPaths();
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return true;
}
void cmFindBase::ExpandPaths()
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{
this->AddCMakeVariablePath();
this->AddCMakeEnvironmentPath();
this->AddUserHintsPath();
this->AddSystemEnvironmentPath();
this->AddCMakeSystemVariablePath();
this->AddUserGuessPath();
// Add suffixes and clean up paths.
this->AddPathSuffixes();
}
//----------------------------------------------------------------------------
void cmFindBase::AddPrefixPaths(std::vector<std::string> const& in_paths,
PathType pathType)
{
// default for programs
std::string subdir = "bin";
if (this->CMakePathName == "INCLUDE")
{
subdir = "include";
}
else if (this->CMakePathName == "LIBRARY")
{
subdir = "lib";
}
else if (this->CMakePathName == "FRAMEWORK")
{
subdir = ""; // ? what to do for frameworks ?
}
for(std::vector<std::string>::const_iterator it = in_paths.begin();
it != in_paths.end(); ++it)
{
std::string dir = it->c_str();
if(!subdir.empty() && !dir.empty() && dir[dir.size()-1] != '/')
{
dir += "/";
}
if(subdir == "lib")
{
const char* arch =
this->Makefile->GetDefinition("CMAKE_LIBRARY_ARCHITECTURE");
if(arch && *arch)
{
this->AddPathInternal(dir+"lib/"+arch, pathType);
}
}
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std::string add = dir + subdir;
if(add != "/")
{
this->AddPathInternal(add, pathType);
}
if (subdir == "bin")
{
this->AddPathInternal(dir+"sbin", pathType);
}
if(!subdir.empty() && *it != "/")
{
this->AddPathInternal(*it, pathType);
}
}
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}
//----------------------------------------------------------------------------
void cmFindBase::AddCMakePrefixPath(const char* variable)
{
// Get a path from a CMake variable.
if(const char* varPath = this->Makefile->GetDefinition(variable))
{
std::vector<std::string> tmp;
cmSystemTools::ExpandListArgument(varPath, tmp);
this->AddPrefixPaths(tmp, CMakePath);
}
}
//----------------------------------------------------------------------------
void cmFindBase::AddEnvPrefixPath(const char* variable)
{
// Get a path from the environment.
std::vector<std::string> tmp;
cmSystemTools::GetPath(tmp, variable);
this->AddPrefixPaths(tmp, EnvPath);
}
//----------------------------------------------------------------------------
void cmFindBase::AddCMakeEnvironmentPath()
{
if(!this->NoCMakeEnvironmentPath && !this->NoDefaultPath)
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{
// Add CMAKE_*_PATH environment variables
std::string var = "CMAKE_";
var += this->CMakePathName;
var += "_PATH";
this->AddEnvPrefixPath("CMAKE_PREFIX_PATH");
this->AddEnvPath(var.c_str());
if(this->CMakePathName == "PROGRAM")
{
this->AddEnvPath("CMAKE_APPBUNDLE_PATH");
}
else
{
this->AddEnvPath("CMAKE_FRAMEWORK_PATH");
}
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}
}
//----------------------------------------------------------------------------
void cmFindBase::AddCMakeVariablePath()
{
if(!this->NoCMakePath && !this->NoDefaultPath)
{
// 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
std::string var = "CMAKE_";
var += this->CMakePathName;
var += "_PATH";
this->AddCMakePrefixPath("CMAKE_PREFIX_PATH");
this->AddCMakePath(var.c_str());
if(this->CMakePathName == "PROGRAM")
{
this->AddCMakePath("CMAKE_APPBUNDLE_PATH");
}
else
{
this->AddCMakePath("CMAKE_FRAMEWORK_PATH");
}
}
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}
//----------------------------------------------------------------------------
void cmFindBase::AddSystemEnvironmentPath()
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{
if(!this->NoSystemEnvironmentPath && !this->NoDefaultPath)
{
// Add LIB or INCLUDE
if(!this->EnvironmentPath.empty())
{
this->AddEnvPath(this->EnvironmentPath.c_str());
}
// Add PATH
this->AddEnvPath(0);
}
}
//----------------------------------------------------------------------------
void cmFindBase::AddCMakeSystemVariablePath()
{
if(!this->NoCMakeSystemPath && !this->NoDefaultPath)
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{
std::string var = "CMAKE_SYSTEM_";
var += this->CMakePathName;
var += "_PATH";
this->AddCMakePrefixPath("CMAKE_SYSTEM_PREFIX_PATH");
this->AddCMakePath(var.c_str());
if(this->CMakePathName == "PROGRAM")
{
this->AddCMakePath("CMAKE_SYSTEM_APPBUNDLE_PATH");
}
else
{
this->AddCMakePath("CMAKE_SYSTEM_FRAMEWORK_PATH");
}
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}
}
//----------------------------------------------------------------------------
void cmFindBase::AddUserHintsPath()
{
this->AddPathsInternal(this->UserHints, CMakePath);
}
//----------------------------------------------------------------------------
void cmFindBase::AddUserGuessPath()
{
this->AddPathsInternal(this->UserPaths, CMakePath);
}
//----------------------------------------------------------------------------
void cmFindBase::AddPathSuffixes()
{
std::vector<std::string>& paths = this->SearchPaths;
std::vector<std::string> finalPath = paths;
std::vector<std::string>::iterator i;
// clear the path
paths.clear();
// convert all paths to unix slashes and add search path suffixes
// if there are any
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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)
{
// if *i is only / then do not add a //
// this will get incorrectly considered a network
// path on windows and cause huge delays.
std::string p = *i;
if(p.size() && p[p.size()-1] != '/')
{
p += std::string("/");
}
p += *j;
// add to all paths because the search path may be modified
// later with lib being replaced for lib64 which may exist
paths.push_back(p);
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}
// now put the path without the path suffixes in the SearchPaths
paths.push_back(*i);
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}
}
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;
}