This revision was automatically updated to reflect the committed changes. Closed by commit rL352803: Make clang/test/Index/pch-from-libclang.c pass in more places (authored by nico, committed by ). Herald added a subscriber: llvm-commits.
Changed prior to commit: https://reviews.llvm.org/D57345?vs=184593&id=184606#toc Repository: rL LLVM CHANGES SINCE LAST ACTION https://reviews.llvm.org/D57345/new/ https://reviews.llvm.org/D57345 Files: cfe/trunk/include/clang/Driver/Driver.h cfe/trunk/lib/Driver/Driver.cpp cfe/trunk/lib/Frontend/CompilerInvocation.cpp cfe/trunk/test/Index/pch-from-libclang.c cfe/trunk/tools/libclang/CIndexer.cpp
Index: cfe/trunk/lib/Driver/Driver.cpp =================================================================== --- cfe/trunk/lib/Driver/Driver.cpp +++ cfe/trunk/lib/Driver/Driver.cpp @@ -89,6 +89,33 @@ using namespace clang; using namespace llvm::opt; +// static +std::string Driver::GetResourcesPath(StringRef BinaryPath, + StringRef CustomResourceDir) { + // Since the resource directory is embedded in the module hash, it's important + // that all places that need it call this function, so that they get the + // exact same string ("a/../b/" and "b/" get different hashes, for example). + + // Dir is bin/ or lib/, depending on where BinaryPath is. + std::string Dir = llvm::sys::path::parent_path(BinaryPath); + + SmallString<128> P(Dir); + if (CustomResourceDir != "") { + llvm::sys::path::append(P, CustomResourceDir); + } else { + // On Windows, libclang.dll is in bin/. + // On non-Windows, libclang.so/.dylib is in lib/. + // With a static-library build of libclang, LibClangPath will contain the + // path of the embedding binary, which for LLVM binaries will be in bin/. + // ../lib gets us to lib/ in both cases. + P = llvm::sys::path::parent_path(Dir); + llvm::sys::path::append(P, Twine("lib") + CLANG_LIBDIR_SUFFIX, "clang", + CLANG_VERSION_STRING); + } + + return P.str(); +} + Driver::Driver(StringRef ClangExecutable, StringRef TargetTriple, DiagnosticsEngine &Diags, IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS) @@ -119,17 +146,7 @@ #endif // Compute the path to the resource directory. - StringRef ClangResourceDir(CLANG_RESOURCE_DIR); - SmallString<128> P(Dir); - if (ClangResourceDir != "") { - llvm::sys::path::append(P, ClangResourceDir); - } else { - StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX); - P = llvm::sys::path::parent_path(Dir); - llvm::sys::path::append(P, Twine("lib") + ClangLibdirSuffix, "clang", - CLANG_VERSION_STRING); - } - ResourceDir = P.str(); + ResourceDir = GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR); } void Driver::ParseDriverMode(StringRef ProgramName, Index: cfe/trunk/lib/Frontend/CompilerInvocation.cpp =================================================================== --- cfe/trunk/lib/Frontend/CompilerInvocation.cpp +++ cfe/trunk/lib/Frontend/CompilerInvocation.cpp @@ -26,6 +26,7 @@ #include "clang/Basic/Visibility.h" #include "clang/Basic/XRayInstr.h" #include "clang/Config/config.h" +#include "clang/Driver/Driver.h" #include "clang/Driver/DriverDiagnostic.h" #include "clang/Driver/Options.h" #include "clang/Frontend/CommandLineSourceLoc.h" @@ -1893,18 +1894,7 @@ void *MainAddr) { std::string ClangExecutable = llvm::sys::fs::getMainExecutable(Argv0, MainAddr); - StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); - - // Compute the path to the resource directory. - StringRef ClangResourceDir(CLANG_RESOURCE_DIR); - SmallString<128> P(Dir); - if (ClangResourceDir != "") - llvm::sys::path::append(P, ClangResourceDir); - else - llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX, - "clang", CLANG_VERSION_STRING); - - return P.str(); + return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR); } static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args, Index: cfe/trunk/tools/libclang/CIndexer.cpp =================================================================== --- cfe/trunk/tools/libclang/CIndexer.cpp +++ cfe/trunk/tools/libclang/CIndexer.cpp @@ -14,6 +14,7 @@ #include "CXString.h" #include "clang/Basic/LLVM.h" #include "clang/Basic/Version.h" +#include "clang/Driver/Driver.h" #include "llvm/ADT/STLExtras.h" #include "llvm/ADT/SmallString.h" #include "llvm/Support/MD5.h" @@ -62,7 +63,7 @@ #endif #endif - LibClangPath += llvm::sys::path::parent_path(path); + LibClangPath += path; #else // This silly cast below avoids a C++ warning. Dl_info info; @@ -70,13 +71,11 @@ llvm_unreachable("Call to dladdr() failed"); // We now have the CIndex directory, locate clang relative to it. - LibClangPath += llvm::sys::path::parent_path(info.dli_fname); + LibClangPath += info.dli_fname; #endif - llvm::sys::path::append(LibClangPath, "clang", CLANG_VERSION_STRING); - // Cache our result. - ResourcesPath = LibClangPath.str(); + ResourcesPath = driver::Driver::GetResourcesPath(LibClangPath); return ResourcesPath; } Index: cfe/trunk/include/clang/Driver/Driver.h =================================================================== --- cfe/trunk/include/clang/Driver/Driver.h +++ cfe/trunk/include/clang/Driver/Driver.h @@ -277,6 +277,12 @@ SmallString<128> &CrashDiagDir); public: + + /// Takes the path to a binary that's either in bin/ or lib/ and returns + /// the path to clang's resource directory. + static std::string GetResourcesPath(StringRef BinaryPath, + StringRef CustomResourceDir = ""); + Driver(StringRef ClangExecutable, StringRef TargetTriple, DiagnosticsEngine &Diags, IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS = nullptr); Index: cfe/trunk/test/Index/pch-from-libclang.c =================================================================== --- cfe/trunk/test/Index/pch-from-libclang.c +++ cfe/trunk/test/Index/pch-from-libclang.c @@ -1,7 +1,11 @@ // Check that clang can use a PCH created from libclang. -// FIXME: Non-darwin bots fail. Would need investigation using -module-file-info to see what is the difference in modules generated from libclang vs the compiler invocation, in those systems. -// REQUIRES: system-darwin +// This test doesn't use -fdisable-module-hash and hence requires that +// CompilerInvocation::getModuleHash() computes exactly the same hash +// for c-index-test and clang, which in turn requires that the both use +// exactly the same resource-dir, even without calling realpath() on it: +// - a/../b/ and b/ are not considered the same +// - on Windows, c:\ and C:\ (only different in case) are not the same // RUN: %clang_cc1 -fsyntax-only %s -verify // RUN: c-index-test -write-pch %t.h.pch %s -fmodules -fmodules-cache-path=%t.mcp -Xclang -triple -Xclang x86_64-apple-darwin
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