Driver: rename Windows to MSVCToolChain
This renames the Windows toolchain to MSVCToolChain. This is a preparatory step
for adding a CrossWindowsToolChain which uses clang/libc++/(ld/lld) without the
standard GCC toolchain lookup. NFC.
llvm-svn: 220362
diff --git a/clang/lib/Driver/MSVCToolChain.cpp b/clang/lib/Driver/MSVCToolChain.cpp
new file mode 100644
index 0000000..882c783
--- /dev/null
+++ b/clang/lib/Driver/MSVCToolChain.cpp
@@ -0,0 +1,335 @@
+//===--- ToolChains.cpp - ToolChain Implementations -----------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ToolChains.h"
+#include "clang/Basic/CharInfo.h"
+#include "clang/Basic/Version.h"
+#include "clang/Driver/Compilation.h"
+#include "clang/Driver/Driver.h"
+#include "clang/Driver/DriverDiagnostic.h"
+#include "clang/Driver/Options.h"
+#include "llvm/Config/llvm-config.h"
+#include "llvm/Option/Arg.h"
+#include "llvm/Option/ArgList.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Path.h"
+
+// Include the necessary headers to interface with the Windows registry and
+// environment.
+#if defined(LLVM_ON_WIN32)
+#define USE_WIN32
+#endif
+
+#ifdef USE_WIN32
+ #define WIN32_LEAN_AND_MEAN
+ #define NOGDI
+ #define NOMINMAX
+ #include <windows.h>
+#endif
+
+using namespace clang::driver;
+using namespace clang::driver::toolchains;
+using namespace clang;
+using namespace llvm::opt;
+
+MSVCToolChain::MSVCToolChain(const Driver &D, const llvm::Triple& Triple,
+ const ArgList &Args)
+ : ToolChain(D, Triple, Args) {
+}
+
+Tool *MSVCToolChain::buildLinker() const {
+ return new tools::visualstudio::Link(*this);
+}
+
+Tool *MSVCToolChain::buildAssembler() const {
+ if (getTriple().isOSBinFormatMachO())
+ return new tools::darwin::Assemble(*this);
+ getDriver().Diag(clang::diag::err_no_external_assembler);
+ return nullptr;
+}
+
+bool MSVCToolChain::IsIntegratedAssemblerDefault() const {
+ return true;
+}
+
+bool MSVCToolChain::IsUnwindTablesDefault() const {
+ // Emit unwind tables by default on Win64. All non-x86_32 Windows platforms
+ // such as ARM and PPC actually require unwind tables, but LLVM doesn't know
+ // how to generate them yet.
+ return getArch() == llvm::Triple::x86_64;
+}
+
+bool MSVCToolChain::isPICDefault() const {
+ return getArch() == llvm::Triple::x86_64;
+}
+
+bool MSVCToolChain::isPIEDefault() const {
+ return false;
+}
+
+bool MSVCToolChain::isPICDefaultForced() const {
+ return getArch() == llvm::Triple::x86_64;
+}
+
+/// \brief 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) {
+#ifndef USE_WIN32
+ return false;
+#else
+ 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 | KEY_WOW64_32KEY,
+ &hTopKey);
+ if (lResult == ERROR_SUCCESS) {
+ char keyName[256];
+ 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 dvalue = strtod(numBuf, NULL);
+ if (dvalue > bestValue) {
+ // Test that InstallDir is indeed there before keeping this index.
+ // Open the chosen key path remainder.
+ strcpy(bestName, keyName);
+ // Append rest of key.
+ strncat(bestName, nextKey, sizeof(bestName) - 1);
+ bestName[sizeof(bestName) - 1] = '\0';
+ lResult = RegOpenKeyEx(hTopKey, bestName, 0,
+ KEY_READ | KEY_WOW64_32KEY, &hKey);
+ if (lResult == ERROR_SUCCESS) {
+ lResult = RegQueryValueEx(hKey, valueName, NULL, &valueType,
+ (LPBYTE)value, &valueSize);
+ if (lResult == ERROR_SUCCESS) {
+ bestValue = dvalue;
+ returnValue = true;
+ }
+ RegCloseKey(hKey);
+ }
+ }
+ size = sizeof(keyName) - 1;
+ }
+ RegCloseKey(hTopKey);
+ }
+ } else {
+ lResult = RegOpenKeyEx(hRootKey, subKey, 0, KEY_READ | KEY_WOW64_32KEY,
+ &hKey);
+ if (lResult == ERROR_SUCCESS) {
+ lResult = RegQueryValueEx(hKey, valueName, NULL, &valueType,
+ (LPBYTE)value, &valueSize);
+ if (lResult == ERROR_SUCCESS)
+ returnValue = true;
+ RegCloseKey(hKey);
+ }
+ }
+ return returnValue;
+#endif // USE_WIN32
+}
+
+/// \brief 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;
+}
+
+// Get Visual Studio installation directory.
+static bool getVisualStudioDir(std::string &path) {
+ // First check the environment variables that vsvars32.bat sets.
+ const char* vcinstalldir = getenv("VCINSTALLDIR");
+ if (vcinstalldir) {
+ char *p = const_cast<char *>(strstr(vcinstalldir, "\\VC"));
+ if (p)
+ *p = '\0';
+ path = vcinstalldir;
+ return true;
+ }
+
+ char vsIDEInstallDir[256];
+ char vsExpressIDEInstallDir[256];
+ // Then try the windows registry.
+ bool hasVCDir = getSystemRegistryString(
+ "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\$VERSION",
+ "InstallDir", vsIDEInstallDir, sizeof(vsIDEInstallDir) - 1);
+ bool hasVCExpressDir = getSystemRegistryString(
+ "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VCExpress\\$VERSION",
+ "InstallDir", vsExpressIDEInstallDir, sizeof(vsExpressIDEInstallDir) - 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;
+ }
+
+ if (hasVCExpressDir && vsExpressIDEInstallDir[0]) {
+ char *p = (char*)strstr(vsExpressIDEInstallDir, "\\Common7\\IDE");
+ if (p)
+ *p = '\0';
+ path = vsExpressIDEInstallDir;
+ return true;
+ }
+
+ // Try the environment.
+ const char *vs100comntools = getenv("VS100COMNTOOLS");
+ const char *vs90comntools = getenv("VS90COMNTOOLS");
+ const char *vs80comntools = getenv("VS80COMNTOOLS");
+
+ const char *vscomntools = nullptr;
+
+ // Find any version we can
+ if (vs100comntools)
+ vscomntools = vs100comntools;
+ else if (vs90comntools)
+ vscomntools = vs90comntools;
+ else if (vs80comntools)
+ vscomntools = vs80comntools;
+
+ if (vscomntools && *vscomntools) {
+ const char *p = strstr(vscomntools, "\\Common7\\Tools");
+ path = p ? std::string(vscomntools, p) : vscomntools;
+ return true;
+ }
+ return false;
+}
+
+void MSVCToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ if (DriverArgs.hasArg(options::OPT_nostdinc))
+ return;
+
+ if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
+ SmallString<128> P(getDriver().ResourceDir);
+ llvm::sys::path::append(P, "include");
+ addSystemInclude(DriverArgs, CC1Args, P.str());
+ }
+
+ if (DriverArgs.hasArg(options::OPT_nostdlibinc))
+ return;
+
+ // Honor %INCLUDE%. It should know essential search paths with vcvarsall.bat.
+ if (const char *cl_include_dir = getenv("INCLUDE")) {
+ SmallVector<StringRef, 8> Dirs;
+ StringRef(cl_include_dir)
+ .split(Dirs, ";", /*MaxSplit=*/-1, /*KeepEmpty=*/false);
+ for (StringRef Dir : Dirs)
+ addSystemInclude(DriverArgs, CC1Args, Dir);
+ if (!Dirs.empty())
+ return;
+ }
+
+ std::string VSDir;
+ std::string WindowsSDKDir;
+
+ // When built with access to the proper Windows APIs, try to actually find
+ // the correct include paths first.
+ if (getVisualStudioDir(VSDir)) {
+ SmallString<128> P;
+ P = VSDir;
+ llvm::sys::path::append(P, "VC\\include");
+ addSystemInclude(DriverArgs, CC1Args, P.str());
+ if (getWindowsSDKDir(WindowsSDKDir)) {
+ P = WindowsSDKDir;
+ llvm::sys::path::append(P, "include");
+ addSystemInclude(DriverArgs, CC1Args, P.str());
+ } else {
+ P = VSDir;
+ llvm::sys::path::append(P, "VC\\PlatformSDK\\Include");
+ addSystemInclude(DriverArgs, CC1Args, P.str());
+ }
+ return;
+ }
+
+ // As a fallback, select default install paths.
+ // FIXME: Don't guess drives and paths like this on Windows.
+ const StringRef Paths[] = {
+ "C:/Program Files/Microsoft Visual Studio 10.0/VC/include",
+ "C:/Program Files/Microsoft Visual Studio 9.0/VC/include",
+ "C:/Program Files/Microsoft Visual Studio 9.0/VC/PlatformSDK/Include",
+ "C:/Program Files/Microsoft Visual Studio 8/VC/include",
+ "C:/Program Files/Microsoft Visual Studio 8/VC/PlatformSDK/Include"
+ };
+ addSystemIncludes(DriverArgs, CC1Args, Paths);
+}
+
+void MSVCToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ // FIXME: There should probably be logic here to find libc++ on Windows.
+}