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llvm-project/clang/lib/Frontend/InitHeaderSearch.cpp

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//===--- InitHeaderSearch.cpp - Initialize header search paths ----------*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the InitHeaderSearch class.
//
//===----------------------------------------------------------------------===//
#include "clang/Frontend/Utils.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Frontend/HeaderSearchOptions.h"
#include "clang/Lex/HeaderSearch.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Triple.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/System/Path.h"
#include "llvm/Config/config.h"
#ifdef _MSC_VER
#define WIN32_LEAN_AND_MEAN 1
#include <windows.h>
#endif
using namespace clang;
using namespace clang::frontend;
namespace {
/// InitHeaderSearch - This class makes it easier to set the search paths of
/// a HeaderSearch object. InitHeaderSearch stores several search path lists
/// internally, which can be sent to a HeaderSearch object in one swoop.
class InitHeaderSearch {
std::vector<DirectoryLookup> IncludeGroup[4];
HeaderSearch& Headers;
bool Verbose;
std::string isysroot;
public:
InitHeaderSearch(HeaderSearch &HS,
bool verbose = false, const std::string &iSysroot = "")
: Headers(HS), Verbose(verbose), isysroot(iSysroot) {}
/// AddPath - Add the specified path to the specified group list.
void AddPath(const llvm::Twine &Path, IncludeDirGroup Group,
bool isCXXAware, bool isUserSupplied,
bool isFramework, bool IgnoreSysRoot = false);
/// AddGnuCPlusPlusIncludePaths - Add the necessary paths to suport a gnu
/// libstdc++.
void AddGnuCPlusPlusIncludePaths(llvm::StringRef Base,
llvm::StringRef ArchDir,
llvm::StringRef Dir32,
llvm::StringRef Dir64,
const llvm::Triple &triple);
/// AddMinGWCPlusPlusIncludePaths - Add the necessary paths to suport a MinGW
/// libstdc++.
void AddMinGWCPlusPlusIncludePaths(llvm::StringRef Base,
llvm::StringRef Arch,
llvm::StringRef Version);
/// AddDelimitedPaths - Add a list of paths delimited by the system PATH
/// separator. The processing follows that of the CPATH variable for gcc.
void AddDelimitedPaths(llvm::StringRef String);
// AddDefaultCIncludePaths - Add paths that should always be searched.
void AddDefaultCIncludePaths(const llvm::Triple &triple);
// AddDefaultCPlusPlusIncludePaths - Add paths that should be searched when
// compiling c++.
void AddDefaultCPlusPlusIncludePaths(const llvm::Triple &triple);
/// AddDefaultSystemIncludePaths - Adds the default system include paths so
/// that e.g. stdio.h is found.
void AddDefaultSystemIncludePaths(const LangOptions &Lang,
const llvm::Triple &triple);
/// Realize - Merges all search path lists into one list and send it to
/// HeaderSearch.
void Realize();
};
}
void InitHeaderSearch::AddPath(const llvm::Twine &Path,
IncludeDirGroup Group, bool isCXXAware,
bool isUserSupplied, bool isFramework,
bool IgnoreSysRoot) {
assert(!Path.isTriviallyEmpty() && "can't handle empty path here");
FileManager &FM = Headers.getFileMgr();
// Compute the actual path, taking into consideration -isysroot.
llvm::SmallString<256> MappedPathStr;
llvm::raw_svector_ostream MappedPath(MappedPathStr);
// Handle isysroot.
if (Group == System && !IgnoreSysRoot) {
// FIXME: Portability. This should be a sys::Path interface, this doesn't
// handle things like C:\ right, nor win32 \\network\device\blah.
if (isysroot.size() != 1 || isysroot[0] != '/') // Add isysroot if present.
MappedPath << isysroot;
}
Path.print(MappedPath);
// Compute the DirectoryLookup type.
SrcMgr::CharacteristicKind Type;
if (Group == Quoted || Group == Angled)
Type = SrcMgr::C_User;
else if (isCXXAware)
Type = SrcMgr::C_System;
else
Type = SrcMgr::C_ExternCSystem;
// If the directory exists, add it.
if (const DirectoryEntry *DE = FM.getDirectory(MappedPath.str())) {
IncludeGroup[Group].push_back(DirectoryLookup(DE, Type, isUserSupplied,
isFramework));
return;
}
// Check to see if this is an apple-style headermap (which are not allowed to
// be frameworks).
if (!isFramework) {
if (const FileEntry *FE = FM.getFile(MappedPath.str())) {
if (const HeaderMap *HM = Headers.CreateHeaderMap(FE)) {
// It is a headermap, add it to the search path.
IncludeGroup[Group].push_back(DirectoryLookup(HM, Type,isUserSupplied));
return;
}
}
}
if (Verbose)
llvm::errs() << "ignoring nonexistent directory \""
<< MappedPath.str() << "\"\n";
}
void InitHeaderSearch::AddDelimitedPaths(llvm::StringRef at) {
if (at.empty()) // Empty string should not add '.' path.
return;
llvm::StringRef::size_type delim;
while ((delim = at.find(llvm::sys::PathSeparator)) != llvm::StringRef::npos) {
if (delim == 0)
AddPath(".", Angled, false, true, false);
else
AddPath(at.substr(0, delim), Angled, false, true, false);
at = at.substr(delim + 1);
}
if (at.empty())
AddPath(".", Angled, false, true, false);
else
AddPath(at, Angled, false, true, false);
}
void InitHeaderSearch::AddGnuCPlusPlusIncludePaths(llvm::StringRef Base,
llvm::StringRef ArchDir,
llvm::StringRef Dir32,
llvm::StringRef Dir64,
const llvm::Triple &triple) {
// Add the base dir
AddPath(Base, System, true, false, false);
// Add the multilib dirs
llvm::Triple::ArchType arch = triple.getArch();
bool is64bit = arch == llvm::Triple::ppc64 || arch == llvm::Triple::x86_64;
if (is64bit)
AddPath(Base + "/" + ArchDir + "/" + Dir64, System, true, false, false);
else
AddPath(Base + "/" + ArchDir + "/" + Dir32, System, true, false, false);
// Add the backward dir
AddPath(Base + "/backward", System, true, false, false);
}
void InitHeaderSearch::AddMinGWCPlusPlusIncludePaths(llvm::StringRef Base,
llvm::StringRef Arch,
llvm::StringRef Version) {
AddPath(Base + "/" + Arch + "/" + Version + "/include",
System, true, false, false);
AddPath(Base + "/" + Arch + "/" + Version + "/include/c++",
System, true, false, false);
AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/backward",
System, true, false, false);
}
// FIXME: This probably should goto to some platform utils place.
#ifdef _MSC_VER
// Read registry string.
// This also supports a means to look for high-versioned keys by use
// of a $VERSION placeholder in the key path.
// $VERSION in the key path is a placeholder for the version number,
// causing the highest value path to be searched for and used.
// I.e. "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\$VERSION".
// There can be additional characters in the component. Only the numberic
// characters are compared.
static bool getSystemRegistryString(const char *keyPath, const char *valueName,
char *value, size_t maxLength) {
HKEY hRootKey = NULL;
HKEY hKey = NULL;
const char* subKey = NULL;
DWORD valueType;
DWORD valueSize = maxLength - 1;
long lResult;
bool returnValue = false;
if (strncmp(keyPath, "HKEY_CLASSES_ROOT\\", 18) == 0) {
hRootKey = HKEY_CLASSES_ROOT;
subKey = keyPath + 18;
}
else if (strncmp(keyPath, "HKEY_USERS\\", 11) == 0) {
hRootKey = HKEY_USERS;
subKey = keyPath + 11;
}
else if (strncmp(keyPath, "HKEY_LOCAL_MACHINE\\", 19) == 0) {
hRootKey = HKEY_LOCAL_MACHINE;
subKey = keyPath + 19;
}
else if (strncmp(keyPath, "HKEY_CURRENT_USER\\", 18) == 0) {
hRootKey = HKEY_CURRENT_USER;
subKey = keyPath + 18;
}
else
return(false);
const char *placeHolder = strstr(subKey, "$VERSION");
char bestName[256];
bestName[0] = '\0';
// If we have a $VERSION placeholder, do the highest-version search.
if (placeHolder) {
const char *keyEnd = placeHolder - 1;
const char *nextKey = placeHolder;
// Find end of previous key.
while ((keyEnd > subKey) && (*keyEnd != '\\'))
keyEnd--;
// Find end of key containing $VERSION.
while (*nextKey && (*nextKey != '\\'))
nextKey++;
size_t partialKeyLength = keyEnd - subKey;
char partialKey[256];
if (partialKeyLength > sizeof(partialKey))
partialKeyLength = sizeof(partialKey);
strncpy(partialKey, subKey, partialKeyLength);
partialKey[partialKeyLength] = '\0';
HKEY hTopKey = NULL;
lResult = RegOpenKeyEx(hRootKey, partialKey, 0, KEY_READ, &hTopKey);
if (lResult == ERROR_SUCCESS) {
char keyName[256];
int bestIndex = -1;
double bestValue = 0.0;
DWORD index, size = sizeof(keyName) - 1;
for (index = 0; RegEnumKeyEx(hTopKey, index, keyName, &size, NULL,
NULL, NULL, NULL) == ERROR_SUCCESS; index++) {
const char *sp = keyName;
while (*sp && !isdigit(*sp))
sp++;
if (!*sp)
continue;
const char *ep = sp + 1;
while (*ep && (isdigit(*ep) || (*ep == '.')))
ep++;
char numBuf[32];
strncpy(numBuf, sp, sizeof(numBuf) - 1);
numBuf[sizeof(numBuf) - 1] = '\0';
double value = strtod(numBuf, NULL);
if (value > bestValue) {
bestIndex = (int)index;
bestValue = value;
strcpy(bestName, keyName);
}
size = sizeof(keyName) - 1;
}
// If we found the highest versioned key, open the key and get the value.
if (bestIndex != -1) {
// Append rest of key.
strncat(bestName, nextKey, sizeof(bestName) - 1);
bestName[sizeof(bestName) - 1] = '\0';
// Open the chosen key path remainder.
lResult = RegOpenKeyEx(hTopKey, bestName, 0, KEY_READ, &hKey);
if (lResult == ERROR_SUCCESS) {
lResult = RegQueryValueEx(hKey, valueName, NULL, &valueType,
(LPBYTE)value, &valueSize);
if (lResult == ERROR_SUCCESS)
returnValue = true;
RegCloseKey(hKey);
}
}
RegCloseKey(hTopKey);
}
}
else {
lResult = RegOpenKeyEx(hRootKey, subKey, 0, KEY_READ, &hKey);
if (lResult == ERROR_SUCCESS) {
lResult = RegQueryValueEx(hKey, valueName, NULL, &valueType,
(LPBYTE)value, &valueSize);
if (lResult == ERROR_SUCCESS)
returnValue = true;
RegCloseKey(hKey);
}
}
return(returnValue);
}
#else // _MSC_VER
// Read registry string.
static bool getSystemRegistryString(const char*, const char*, char*, size_t) {
return(false);
}
#endif // _MSC_VER
// Get Visual Studio installation directory.
static bool getVisualStudioDir(std::string &path) {
char vsIDEInstallDir[256];
// Try the Windows registry first.
bool hasVCDir = getSystemRegistryString(
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\$VERSION",
"InstallDir", vsIDEInstallDir, sizeof(vsIDEInstallDir) - 1);
// If we have both vc80 and vc90, pick version we were compiled with.
if (hasVCDir && vsIDEInstallDir[0]) {
char *p = (char*)strstr(vsIDEInstallDir, "\\Common7\\IDE");
if (p)
*p = '\0';
path = vsIDEInstallDir;
return(true);
}
else {
// Try the environment.
const char* vs90comntools = getenv("VS90COMNTOOLS");
const char* vs80comntools = getenv("VS80COMNTOOLS");
const char* vscomntools = NULL;
// If we have both vc80 and vc90, pick version we were compiled with.
if (vs90comntools && vs80comntools) {
#if (_MSC_VER >= 1500) // VC90
vscomntools = vs90comntools;
#elif (_MSC_VER == 1400) // VC80
vscomntools = vs80comntools;
#else
vscomntools = vs90comntools;
#endif
}
else if (vs90comntools)
vscomntools = vs90comntools;
else if (vs80comntools)
vscomntools = vs80comntools;
if (vscomntools && *vscomntools) {
char *p = (char*)strstr(vscomntools, "\\Common7\\Tools");
if (p)
*p = '\0';
path = vscomntools;
return(true);
}
else
return(false);
}
return(false);
}
// Get Windows SDK installation directory.
static bool getWindowsSDKDir(std::string &path) {
char windowsSDKInstallDir[256];
// Try the Windows registry.
bool hasSDKDir = getSystemRegistryString(
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Microsoft SDKs\\Windows\\$VERSION",
"InstallationFolder", windowsSDKInstallDir, sizeof(windowsSDKInstallDir) - 1);
// If we have both vc80 and vc90, pick version we were compiled with.
if (hasSDKDir && windowsSDKInstallDir[0]) {
path = windowsSDKInstallDir;
return(true);
}
return(false);
}
void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple) {
// FIXME: temporary hack: hard-coded paths.
llvm::StringRef CIncludeDirs(C_INCLUDE_DIRS);
if (CIncludeDirs != "") {
llvm::SmallVector<llvm::StringRef, 5> dirs;
CIncludeDirs.split(dirs, ":");
for (llvm::SmallVectorImpl<llvm::StringRef>::iterator i = dirs.begin();
i != dirs.end();
++i)
AddPath(*i, System, false, false, false);
return;
}
llvm::Triple::OSType os = triple.getOS();
switch (os) {
case llvm::Triple::Win32:
{
std::string VSDir;
std::string WindowsSDKDir;
if (getVisualStudioDir(VSDir)) {
AddPath(VSDir + "\\VC\\include", System, false, false, false);
if (getWindowsSDKDir(WindowsSDKDir))
AddPath(WindowsSDKDir, System, false, false, false);
else
AddPath(VSDir + "\\VC\\PlatformSDK\\Include",
System, false, false, false);
}
else {
// Default install paths.
AddPath("C:/Program Files/Microsoft Visual Studio 9.0/VC/include",
System, false, false, false);
AddPath(
"C:/Program Files/Microsoft Visual Studio 9.0/VC/PlatformSDK/Include",
System, false, false, false);
AddPath("C:/Program Files/Microsoft Visual Studio 8/VC/include",
System, false, false, false);
AddPath(
"C:/Program Files/Microsoft Visual Studio 8/VC/PlatformSDK/Include",
System, false, false, false);
// For some clang developers.
AddPath("G:/Program Files/Microsoft Visual Studio 9.0/VC/include",
System, false, false, false);
AddPath(
"G:/Program Files/Microsoft Visual Studio 9.0/VC/PlatformSDK/Include",
System, false, false, false);
}
}
break;
case llvm::Triple::MinGW64:
case llvm::Triple::MinGW32:
AddPath("c:/mingw/include", System, true, false, false);
break;
default:
break;
}
AddPath("/usr/local/include", System, false, false, false);
AddPath("/usr/include", System, false, false, false);
}
void InitHeaderSearch::AddDefaultCPlusPlusIncludePaths(const llvm::Triple &triple) {
llvm::Triple::OSType os = triple.getOS();
llvm::StringRef CxxIncludeRoot(CXX_INCLUDE_ROOT);
if (CxxIncludeRoot != "") {
llvm::StringRef CxxIncludeArch(CXX_INCLUDE_ARCH);
if (CxxIncludeArch == "")
AddGnuCPlusPlusIncludePaths(CxxIncludeRoot, triple.str().c_str(),
CXX_INCLUDE_32BIT_DIR, CXX_INCLUDE_64BIT_DIR, triple);
else
AddGnuCPlusPlusIncludePaths(CxxIncludeRoot, CXX_INCLUDE_ARCH,
CXX_INCLUDE_32BIT_DIR, CXX_INCLUDE_64BIT_DIR, triple);
return;
}
// FIXME: temporary hack: hard-coded paths.
switch (os) {
case llvm::Triple::Cygwin:
AddPath("/lib/gcc/i686-pc-cygwin/3.4.4/include",
System, true, false, false);
AddPath("/lib/gcc/i686-pc-cygwin/3.4.4/include/c++",
System, true, false, false);
break;
case llvm::Triple::MinGW64:
// Try gcc 4.4.0
AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw64", "4.4.0");
// Try gcc 4.3.0
AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw64", "4.3.0");
// Fall through.
case llvm::Triple::MinGW32:
// Try gcc 4.4.0
AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.4.0");
// Try gcc 4.3.0
AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.3.0");
break;
case llvm::Triple::Darwin:
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1",
"i686-apple-darwin10", "", "x86_64", triple);
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.0.0",
"i686-apple-darwin8", "", "", triple);
break;
case llvm::Triple::DragonFly:
AddPath("/usr/include/c++/4.1", System, true, false, false);
break;
case llvm::Triple::Linux:
// Exherbo (2010-01-25)
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.3",
"x86_64-pc-linux-gnu", "32", "", triple);
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.3",
"i686-pc-linux-gnu", "", "", triple);
// Debian sid
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.2",
"x86_64-linux-gnu", "32", "", triple);
// Ubuntu 7.10 - Gutsy Gibbon
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.1.3",
"i486-linux-gnu", "", "", triple);
// Ubuntu 9.04
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3.3",
"x86_64-linux-gnu","32", "", triple);
// Ubuntu 9.10
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.1",
"x86_64-linux-gnu", "32", "", triple);
// Fedora 8
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.1.2",
"i386-redhat-linux", "", "", triple);
// Fedora 9
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3.0",
"i386-redhat-linux", "", "", triple);
// Fedora 10
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3.2",
"i386-redhat-linux","", "", triple);
// Fedora 10 x86_64
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3.2",
"x86_64-redhat-linux", "32", "", triple);
// Fedora 11
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.1",
"i586-redhat-linux","", "", triple);
// Fedora 12
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.2",
"i686-redhat-linux","", "", triple);
// openSUSE 11.1 32 bit
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3",
"i586-suse-linux", "", "", triple);
// openSUSE 11.1 64 bit
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3",
"x86_64-suse-linux", "32", "", triple);
// openSUSE 11.2
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4",
"i586-suse-linux", "", "", triple);
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4",
"x86_64-suse-linux", "", "", triple);
// Arch Linux 2008-06-24
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3.1",
"i686-pc-linux-gnu", "", "", triple);
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3.1",
"x86_64-unknown-linux-gnu", "", "", triple);
// Gentoo x86 2009.1 stable
AddGnuCPlusPlusIncludePaths(
"/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/include/g++-v4",
"i686-pc-linux-gnu", "", "", triple);
// Gentoo x86 2009.0 stable
AddGnuCPlusPlusIncludePaths(
"/usr/lib/gcc/i686-pc-linux-gnu/4.3.2/include/g++-v4",
"i686-pc-linux-gnu", "", "", triple);
// Gentoo x86 2008.0 stable
AddGnuCPlusPlusIncludePaths(
"/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4",
"i686-pc-linux-gnu", "", "", triple);
// Ubuntu 8.10
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3",
"i486-pc-linux-gnu", "", "", triple);
// Ubuntu 9.04
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3",
"i486-linux-gnu","", "", triple);
// Gentoo amd64 stable
AddGnuCPlusPlusIncludePaths(
"/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include/g++-v4",
"i686-pc-linux-gnu", "", "", triple);
break;
case llvm::Triple::FreeBSD:
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2", "", "", "", triple);
break;
case llvm::Triple::Solaris:
// Solaris - Fall though..
case llvm::Triple::AuroraUX:
// AuroraUX
AddGnuCPlusPlusIncludePaths("/opt/gcc4/include/c++/4.2.4",
"i386-pc-solaris2.11", "", "", triple);
break;
default:
break;
}
}
void InitHeaderSearch::AddDefaultSystemIncludePaths(const LangOptions &Lang,
const llvm::Triple &triple) {
if (Lang.CPlusPlus)
AddDefaultCPlusPlusIncludePaths(triple);
AddDefaultCIncludePaths(triple);
// Add the default framework include paths on Darwin.
if (triple.getOS() == llvm::Triple::Darwin) {
AddPath("/System/Library/Frameworks", System, true, false, true);
AddPath("/Library/Frameworks", System, true, false, true);
}
}
/// RemoveDuplicates - If there are duplicate directory entries in the specified
/// search list, remove the later (dead) ones.
static void RemoveDuplicates(std::vector<DirectoryLookup> &SearchList,
bool Verbose) {
llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenDirs;
llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenFrameworkDirs;
llvm::SmallPtrSet<const HeaderMap *, 8> SeenHeaderMaps;
for (unsigned i = 0; i != SearchList.size(); ++i) {
unsigned DirToRemove = i;
const DirectoryLookup &CurEntry = SearchList[i];
if (CurEntry.isNormalDir()) {
// If this isn't the first time we've seen this dir, remove it.
if (SeenDirs.insert(CurEntry.getDir()))
continue;
} else if (CurEntry.isFramework()) {
// If this isn't the first time we've seen this framework dir, remove it.
if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir()))
continue;
} else {
assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?");
// If this isn't the first time we've seen this headermap, remove it.
if (SeenHeaderMaps.insert(CurEntry.getHeaderMap()))
continue;
}
// If we have a normal #include dir/framework/headermap that is shadowed
// later in the chain by a system include location, we actually want to
// ignore the user's request and drop the user dir... keeping the system
// dir. This is weird, but required to emulate GCC's search path correctly.
//
// Since dupes of system dirs are rare, just rescan to find the original
// that we're nuking instead of using a DenseMap.
if (CurEntry.getDirCharacteristic() != SrcMgr::C_User) {
// Find the dir that this is the same of.
unsigned FirstDir;
for (FirstDir = 0; ; ++FirstDir) {
assert(FirstDir != i && "Didn't find dupe?");
const DirectoryLookup &SearchEntry = SearchList[FirstDir];
// If these are different lookup types, then they can't be the dupe.
if (SearchEntry.getLookupType() != CurEntry.getLookupType())
continue;
bool isSame;
if (CurEntry.isNormalDir())
isSame = SearchEntry.getDir() == CurEntry.getDir();
else if (CurEntry.isFramework())
isSame = SearchEntry.getFrameworkDir() == CurEntry.getFrameworkDir();
else {
assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?");
isSame = SearchEntry.getHeaderMap() == CurEntry.getHeaderMap();
}
if (isSame)
break;
}
// If the first dir in the search path is a non-system dir, zap it
// instead of the system one.
if (SearchList[FirstDir].getDirCharacteristic() == SrcMgr::C_User)
DirToRemove = FirstDir;
}
if (Verbose) {
llvm::errs() << "ignoring duplicate directory \""
<< CurEntry.getName() << "\"\n";
if (DirToRemove != i)
llvm::errs() << " as it is a non-system directory that duplicates "
<< "a system directory\n";
}
// This is reached if the current entry is a duplicate. Remove the
// DirToRemove (usually the current dir).
SearchList.erase(SearchList.begin()+DirToRemove);
--i;
}
}
void InitHeaderSearch::Realize() {
// Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList.
std::vector<DirectoryLookup> SearchList;
SearchList = IncludeGroup[Angled];
SearchList.insert(SearchList.end(), IncludeGroup[System].begin(),
IncludeGroup[System].end());
SearchList.insert(SearchList.end(), IncludeGroup[After].begin(),
IncludeGroup[After].end());
RemoveDuplicates(SearchList, Verbose);
RemoveDuplicates(IncludeGroup[Quoted], Verbose);
// Prepend QUOTED list on the search list.
SearchList.insert(SearchList.begin(), IncludeGroup[Quoted].begin(),
IncludeGroup[Quoted].end());
bool DontSearchCurDir = false; // TODO: set to true if -I- is set?
Headers.SetSearchPaths(SearchList, IncludeGroup[Quoted].size(),
DontSearchCurDir);
// If verbose, print the list of directories that will be searched.
if (Verbose) {
llvm::errs() << "#include \"...\" search starts here:\n";
unsigned QuotedIdx = IncludeGroup[Quoted].size();
for (unsigned i = 0, e = SearchList.size(); i != e; ++i) {
if (i == QuotedIdx)
llvm::errs() << "#include <...> search starts here:\n";
const char *Name = SearchList[i].getName();
const char *Suffix;
if (SearchList[i].isNormalDir())
Suffix = "";
else if (SearchList[i].isFramework())
Suffix = " (framework directory)";
else {
assert(SearchList[i].isHeaderMap() && "Unknown DirectoryLookup");
Suffix = " (headermap)";
}
llvm::errs() << " " << Name << Suffix << "\n";
}
llvm::errs() << "End of search list.\n";
}
}
void clang::ApplyHeaderSearchOptions(HeaderSearch &HS,
const HeaderSearchOptions &HSOpts,
const LangOptions &Lang,
const llvm::Triple &Triple) {
InitHeaderSearch Init(HS, HSOpts.Verbose, HSOpts.Sysroot);
// Add the user defined entries.
for (unsigned i = 0, e = HSOpts.UserEntries.size(); i != e; ++i) {
const HeaderSearchOptions::Entry &E = HSOpts.UserEntries[i];
Init.AddPath(E.Path, E.Group, false, E.IsUserSupplied, E.IsFramework,
false);
}
// Add entries from CPATH and friends.
Init.AddDelimitedPaths(HSOpts.EnvIncPath);
if (Lang.CPlusPlus && Lang.ObjC1)
Init.AddDelimitedPaths(HSOpts.ObjCXXEnvIncPath);
else if (Lang.CPlusPlus)
Init.AddDelimitedPaths(HSOpts.CXXEnvIncPath);
else if (Lang.ObjC1)
Init.AddDelimitedPaths(HSOpts.ObjCEnvIncPath);
else
Init.AddDelimitedPaths(HSOpts.CEnvIncPath);
if (HSOpts.UseBuiltinIncludes) {
// Ignore the sys root, we *always* look for clang headers relative to
// supplied path.
llvm::sys::Path P(HSOpts.ResourceDir);
P.appendComponent("include");
Init.AddPath(P.str(), System, false, false, false, /*IgnoreSysRoot=*/ true);
}
if (HSOpts.UseStandardIncludes)
Init.AddDefaultSystemIncludePaths(Lang, Triple);
Init.Realize();
}
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