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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/Driver/InitHeaderSearch.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/LangOptions.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/System/Path.h"
#include <vector>
using namespace clang;
void InitHeaderSearch::AddPath(const std::string &Path, IncludeDirGroup Group,
bool isCXXAware, bool isUserSupplied,
bool isFramework) {
assert(!Path.empty() && "can't handle empty path here");
FileManager &FM = Headers.getFileMgr();
// Compute the actual path, taking into consideration -isysroot.
llvm::SmallString<256> MappedPath;
// Handle isysroot.
if (Group == System) {
// 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.append(isysroot.begin(), isysroot.end());
}
MappedPath.append(Path.begin(), Path.end());
// Compute the DirectoryLookup type.
DirectoryLookup::DirType Type;
if (Group == Quoted || Group == Angled)
Type = DirectoryLookup::NormalHeaderDir;
else if (isCXXAware)
Type = DirectoryLookup::SystemHeaderDir;
else
Type = DirectoryLookup::ExternCSystemHeaderDir;
// If the directory exists, add it.
if (const DirectoryEntry *DE = FM.getDirectory(&MappedPath[0],
&MappedPath[0]+
MappedPath.size())) {
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[0],
&MappedPath[0]+MappedPath.size())) {
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)
fprintf(stderr, "ignoring nonexistent directory \"%s\"\n", Path.c_str());
}
void InitHeaderSearch::AddEnvVarPaths(const char *Name) {
const char* at = getenv(Name);
if (!at)
return;
const char* delim = strchr(at, llvm::sys::PathSeparator);
while (delim != 0) {
if (delim-at == 0)
AddPath(".", Angled, false, true, false);
else
AddPath(std::string(at, std::string::size_type(delim-at)), Angled, false,
true, false);
at = delim + 1;
delim = strchr(at, llvm::sys::PathSeparator);
}
if (*at == 0)
AddPath(".", Angled, false, true, false);
else
AddPath(at, Angled, false, true, false);
}
void InitHeaderSearch::AddDefaultSystemIncludePaths(const LangOptions &Lang) {
// FIXME: temporary hack: hard-coded paths.
// FIXME: get these from the target?
if (Lang.CPlusPlus) {
AddPath("/usr/include/c++/4.2.1", System, true, false, false);
AddPath("/usr/include/c++/4.2.1/i686-apple-darwin10", System, true, false,
false);
AddPath("/usr/include/c++/4.2.1/backward", System, true, false, false);
AddPath("/usr/include/c++/4.0.0", System, true, false, false);
AddPath("/usr/include/c++/4.0.0/i686-apple-darwin8", System, true, false,
false);
AddPath("/usr/include/c++/4.0.0/backward", System, true, false, false);
// Ubuntu 7.10 - Gutsy Gibbon
AddPath("/usr/include/c++/4.1.3", System, true, false, false);
AddPath("/usr/include/c++/4.1.3/i486-linux-gnu", System, true, false,
false);
AddPath("/usr/include/c++/4.1.3/backward", System, true, false, false);
// Fedora 8
AddPath("/usr/include/c++/4.1.2", System, true, false, false);
AddPath("/usr/include/c++/4.1.2/i386-redhat-linux", System, true, false,
false);
AddPath("/usr/include/c++/4.1.2/backward", System, true, false, false);
// Fedora 9
AddPath("/usr/include/c++/4.3.0", System, true, false, false);
AddPath("/usr/include/c++/4.3.0/i386-redhat-linux", System, true, false,
false);
AddPath("/usr/include/c++/4.3.0/backward", System, true, false, false);
// Arch Linux 2008-06-24
AddPath("/usr/include/c++/4.3.1", System, true, false, false);
AddPath("/usr/include/c++/4.3.1/i686-pc-linux-gnu", System, true, false,
false);
AddPath("/usr/include/c++/4.3.1/backward", System, true, false, false);
AddPath("/usr/include/c++/4.3.1/x86_64-unknown-linux-gnu", System, true,
false, false);
}
AddPath("/usr/local/include", System, false, false, false);
AddPath("/usr/lib/gcc/i686-apple-darwin10/4.2.1/include", System,
false, false, false);
AddPath("/usr/lib/gcc/powerpc-apple-darwin10/4.2.1/include",
System, false, false, false);
// leopard
AddPath("/usr/lib/gcc/i686-apple-darwin9/4.0.1/include", System,
false, false, false);
AddPath("/usr/lib/gcc/powerpc-apple-darwin9/4.0.1/include",
System, false, false, false);
AddPath("/usr/lib/gcc/powerpc-apple-darwin9/"
"4.0.1/../../../../powerpc-apple-darwin0/include",
System, false, false, false);
// tiger
AddPath("/usr/lib/gcc/i686-apple-darwin8/4.0.1/include", System,
false, false, false);
AddPath("/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/include",
System, false, false, false);
AddPath("/usr/lib/gcc/powerpc-apple-darwin8/"
"4.0.1/../../../../powerpc-apple-darwin8/include",
System, false, false, false);
// Ubuntu 7.10 - Gutsy Gibbon
AddPath("/usr/lib/gcc/i486-linux-gnu/4.1.3/include", System,
false, false, false);
// Fedora 8
AddPath("/usr/lib/gcc/i386-redhat-linux/4.1.2/include", System,
false, false, false);
// Fedora 9
AddPath("/usr/lib/gcc/i386-redhat-linux/4.3.0/include", System,
false, false, false);
//Debian testing/lenny x86
AddPath("/usr/lib/gcc/i486-linux-gnu/4.2.3/include", System,
false, false, false);
//Debian testing/lenny amd64
AddPath("/usr/lib/gcc/x86_64-linux-gnu/4.2.3/include", System,
false, false, false);
// Arch Linux 2008-06-24
AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.3.1/include", System,
false, false, false);
AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.3.1/include-fixed", System,
false, false, false);
AddPath("/usr/lib/gcc/x86_64-unknown-linux-gnu/4.3.1/include", System,
false, false, false);
AddPath("/usr/lib/gcc/x86_64-unknown-linux-gnu/4.3.1/include-fixed",
System, false, false, false);
// Debian testing/lenny ppc32
AddPath("/usr/lib/gcc/powerpc-linux-gnu/4.2.3/include", System,
false, false, false);
// Gentoo x86 stable
AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include", System,
false, false, false);
AddPath("/usr/include", System, false, false, false);
AddPath("/System/Library/Frameworks", System, true, false, true);
AddPath("/Library/Frameworks", System, true, false, true);
}
void InitHeaderSearch::AddDefaultEnvVarPaths(const LangOptions &Lang) {
AddEnvVarPaths("CPATH");
if (Lang.CPlusPlus && Lang.ObjC1)
AddEnvVarPaths("OBJCPLUS_INCLUDE_PATH");
else if (Lang.CPlusPlus)
AddEnvVarPaths("CPLUS_INCLUDE_PATH");
else if (Lang.ObjC1)
AddEnvVarPaths("OBJC_INCLUDE_PATH");
else
AddEnvVarPaths("C_INCLUDE_PATH");
}
/// 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) {
if (SearchList[i].isNormalDir()) {
// If this isn't the first time we've seen this dir, remove it.
if (SeenDirs.insert(SearchList[i].getDir()))
continue;
if (Verbose)
fprintf(stderr, "ignoring duplicate directory \"%s\"\n",
SearchList[i].getDir()->getName());
} else if (SearchList[i].isFramework()) {
// If this isn't the first time we've seen this framework dir, remove it.
if (SeenFrameworkDirs.insert(SearchList[i].getFrameworkDir()))
continue;
if (Verbose)
fprintf(stderr, "ignoring duplicate framework \"%s\"\n",
SearchList[i].getFrameworkDir()->getName());
} else {
assert(SearchList[i].isHeaderMap() && "Not a headermap or normal dir?");
// If this isn't the first time we've seen this headermap, remove it.
if (SeenHeaderMaps.insert(SearchList[i].getHeaderMap()))
continue;
if (Verbose)
fprintf(stderr, "ignoring duplicate directory \"%s\"\n",
SearchList[i].getDir()->getName());
}
// This is reached if the current entry is a duplicate.
SearchList.erase(SearchList.begin()+i);
--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) {
fprintf(stderr, "#include \"...\" search starts here:\n");
unsigned QuotedIdx = IncludeGroup[Quoted].size();
for (unsigned i = 0, e = SearchList.size(); i != e; ++i) {
if (i == QuotedIdx)
fprintf(stderr, "#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)";
}
fprintf(stderr, " %s%s\n", Name, Suffix);
}
fprintf(stderr, "End of search list.\n");
}
}