Commit 38f05d4ac5

Dimenus <rsdimenus@gmail.com>
2017-11-01 20:33:14
WIN32: Linking with the CRT at runtime. (#570)
Disclaimer: Forgive me if my format sucks, I've never submitted a PR before! Fixes: #517 I added a few things to allow zig to link with the CRT properly both statically and dynamically. In Visual Studio 2017, Microsoft changed how the c-runtime is factored again. With this change, they also added a COM interface to allow you to query the respective Visual Studio instance for two of them. This does that and also falls back on a registry query for 2015 support. If you're using a Visual Studio instance older than 2015, you'll have to use the existing options available with the zig compiler. Changes are listed below along with a general description of the changes. all_types.cpp: The separate variables for msvc/kern32 have been removed and all win32 libc directory paths have been combined into a ZigList since we're querying more than two directories and differentiating one from another doesn't matter to lld. analyze.cpp: The existing functions were extended to support querying libc libs & libc headers at runtime. codegen.cpp/hpp: Microsoft uses the new 'Universal C Runtime' name now. Doesn't matter from a functionality standpoint. I left the compiler switches as is to not introduce any breaking changes. link.cpp: We're linking 4 libs and generating another in order to support the UCRT. Dynamic: msvcrt/d, vcruntime/d, ucrt/d, legacy_stdio_definitions.lib Static: libcmt/d, libvcruntime/d libucrt/d, legacy_stdio_definitions.lib main.cpp: Update function call names. os.cpp/hpp: COM/Registry interface for querying Windows UCRT/SDK. Sources: [Windows CRT](https://docs.microsoft.com/en-us/cpp/c-runtime-library/crt-library-features) [VS 2015 Breaking Changes](https://msdn.microsoft.com/en-us/library/bb531344.aspx)
1 parent b35689b
src/all_types.hpp
@@ -35,6 +35,7 @@ struct IrInstruction;
 struct IrInstructionCast;
 struct IrBasicBlock;
 struct ScopeDecls;
+struct ZigWindowsSDK;
 
 struct IrGotoItem {
     AstNode *source_node;
@@ -1461,17 +1462,17 @@ struct CodeGen {
     bool have_winmain_crt_startup;
     bool have_dllmain_crt_startup;
     bool have_pub_panic;
+    ZigList<Buf*> libc_lib_dirs_list;
     Buf *libc_lib_dir;
     Buf *libc_static_lib_dir;
     Buf *libc_include_dir;
-    Buf *msvc_lib_dir;
-    Buf *kernel32_lib_dir;
     Buf *zig_lib_dir;
     Buf *zig_std_dir;
     Buf *zig_c_headers_dir;
     Buf *zig_std_special_dir;
     Buf *dynamic_linker;
     Buf *ar_path;
+    ZigWindowsSDK *win_sdk;
     Buf triple_str;
     BuildMode build_mode;
     bool is_test_build;
src/analyze.cpp
@@ -1,4 +1,4 @@
-/*
+/*
  * Copyright (c) 2015 Andrew Kelley
  *
  * This file is part of zig, which is MIT licensed.
@@ -3371,65 +3371,57 @@ bool handle_is_ptr(TypeTableEntry *type_entry) {
 }
 
 void find_libc_include_path(CodeGen *g) {
+#ifdef ZIG_OS_WINDOWS
     if (!g->libc_include_dir || buf_len(g->libc_include_dir) == 0) {
+        if (g->win_sdk == nullptr) {
+            if (os_find_windows_sdk(&g->win_sdk)) {
+                zig_panic("Unable to determine Windows SDK path.");
+            }
+        }
+
+        if (g->zig_target.os == ZigLLVM_Win32) {
+            if (os_get_win32_ucrt_include_path(g->win_sdk, g->libc_include_dir)) {
+                zig_panic("Unable to determine libc include path.");
+            }
+        }
+    }
+    return;
+#endif
+    // TODO find libc at runtime for other operating systems
+    if(!g->libc_include_dir || buf_len(g->libc_include_dir) == 0) {
         zig_panic("Unable to determine libc include path.");
     }
 }
 
 void find_libc_lib_path(CodeGen *g) {
 #ifdef ZIG_OS_WINDOWS
-    if (!g->msvc_lib_dir && g->zig_target.os == ZigLLVM_Win32) {
-        Buf *msvc_lib_dir;
-        if (g->zig_target.arch.arch == ZigLLVM_arm) {
-            msvc_lib_dir = buf_create_from_str("C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\lib\\arm");
-        } else if (g->zig_target.arch.arch == ZigLLVM_x86_64) {
-            msvc_lib_dir = buf_create_from_str("C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\lib\\amd64");
-        } else if (g->zig_target.arch.arch == ZigLLVM_x86) {
-            msvc_lib_dir = buf_create_from_str("C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\lib");
-        } else {
-            zig_panic("unable to determine msvc lib path");
-        }
-        Buf *test_path = buf_alloc();
-        os_path_join(msvc_lib_dir, buf_create_from_str("vcruntime.lib"), test_path);
-        bool result;
-        int err;
-        if ((err = os_file_exists(test_path, &result))) {
-            result = false;
-        }
-        if (result) {
-            g->msvc_lib_dir = msvc_lib_dir;
-        } else {
-            zig_panic("Unable to determine msvc lib path.");
+    if (g->zig_target.os == ZigLLVM_Win32) {
+        if (g->win_sdk == nullptr) {
+            if (os_find_windows_sdk(&g->win_sdk)) {
+                zig_panic("Unable to determine Windows SDK path.");
+            }
         }
-    }
 
-    if (!g->kernel32_lib_dir && g->zig_target.os == ZigLLVM_Win32) {
-        Buf *kernel32_lib_dir;
-        if (g->zig_target.arch.arch == ZigLLVM_arm) {
-            kernel32_lib_dir = buf_create_from_str(
-                "C:\\Program Files (x86)\\Windows Kits\\8.1\\Lib\\winv6.3\\um\\arm");
-        } else if (g->zig_target.arch.arch == ZigLLVM_x86_64) {
-            kernel32_lib_dir = buf_create_from_str(
-                "C:\\Program Files (x86)\\Windows Kits\\8.1\\Lib\\winv6.3\\um\\x64");
-        } else if (g->zig_target.arch.arch == ZigLLVM_x86) {
-            kernel32_lib_dir = buf_create_from_str(
-                "C:\\Program Files (x86)\\Windows Kits\\8.1\\Lib\\winv6.3\\um\\x86");
-        } else {
-            zig_panic("unable to determine kernel32 lib path");
+        Buf* vc_lib_dir = buf_alloc();
+        if (os_get_win32_vcruntime_path(vc_lib_dir, g->zig_target.arch.arch)) {
+            zig_panic("Unable to determine vcruntime path.");
         }
-        Buf *test_path = buf_alloc();
-        os_path_join(kernel32_lib_dir, buf_create_from_str("kernel32.lib"), test_path);
-        bool result;
-        int err;
-        if ((err = os_file_exists(test_path, &result))) {
-            result = false;
+
+        Buf* ucrt_lib_path = buf_alloc();
+        if (os_get_win32_ucrt_lib_path(g->win_sdk, ucrt_lib_path, g->zig_target.arch.arch)) {
+            zig_panic("Unable to determine ucrt path.");
         }
-        if (result) {
-            g->kernel32_lib_dir = kernel32_lib_dir;
-        } else {
-            zig_panic("Unable to determine kernel32 lib path.");
+
+        Buf* kern_lib_path = buf_alloc();
+        if (os_get_win32_kern32_path(g->win_sdk, kern_lib_path, g->zig_target.arch.arch)) {
+            zig_panic("Unable to determine kernel32 path.");
         }
+
+        g->libc_lib_dirs_list.append(vc_lib_dir);
+        g->libc_lib_dirs_list.append(ucrt_lib_path);
+        g->libc_lib_dirs_list.append(kern_lib_path);
     }
+    return;
 #endif
 
     // later we can handle this better by reporting an error via the normal mechanism
src/codegen.cpp
@@ -85,7 +85,6 @@ CodeGen *codegen_create(Buf *root_src_path, const ZigTarget *target, OutType out
     g->external_prototypes.init(8);
     g->is_test_build = false;
     g->want_h_file = (out_type == OutTypeObj || out_type == OutTypeLib);
-
     buf_resize(&g->global_asm, 0);
 
     // reserve index 0 to indicate no error
@@ -106,31 +105,25 @@ CodeGen *codegen_create(Buf *root_src_path, const ZigTarget *target, OutType out
     g->zig_std_special_dir = buf_alloc();
     os_path_join(g->zig_std_dir, buf_sprintf("special"), g->zig_std_special_dir);
 
-
     if (target) {
         // cross compiling, so we can't rely on all the configured stuff since
         // that's for native compilation
         g->zig_target = *target;
         resolve_target_object_format(&g->zig_target);
-
         g->dynamic_linker = buf_create_from_str("");
         g->libc_lib_dir = buf_create_from_str("");
         g->libc_static_lib_dir = buf_create_from_str("");
         g->libc_include_dir = buf_create_from_str("");
-        g->msvc_lib_dir = nullptr;
-        g->kernel32_lib_dir = nullptr;
         g->each_lib_rpath = false;
     } else {
         // native compilation, we can rely on the configuration stuff
         g->is_native_target = true;
         get_native_target(&g->zig_target);
-
         g->dynamic_linker = buf_create_from_str(ZIG_DYNAMIC_LINKER);
         g->libc_lib_dir = buf_create_from_str(ZIG_LIBC_LIB_DIR);
         g->libc_static_lib_dir = buf_create_from_str(ZIG_LIBC_STATIC_LIB_DIR);
         g->libc_include_dir = buf_create_from_str(ZIG_LIBC_INCLUDE_DIR);
-        g->msvc_lib_dir = nullptr; // find it at runtime
-        g->kernel32_lib_dir = nullptr; // find it at runtime
+
 #ifdef ZIG_EACH_LIB_RPATH
         g->each_lib_rpath = true;
 #endif
@@ -228,14 +221,6 @@ void codegen_set_libc_include_dir(CodeGen *g, Buf *libc_include_dir) {
     g->libc_include_dir = libc_include_dir;
 }
 
-void codegen_set_msvc_lib_dir(CodeGen *g, Buf *msvc_lib_dir) {
-    g->msvc_lib_dir = msvc_lib_dir;
-}
-
-void codegen_set_kernel32_lib_dir(CodeGen *g, Buf *kernel32_lib_dir) {
-    g->kernel32_lib_dir = kernel32_lib_dir;
-}
-
 void codegen_set_dynamic_linker(CodeGen *g, Buf *dynamic_linker) {
     g->dynamic_linker = dynamic_linker;
 }
@@ -244,6 +229,14 @@ void codegen_add_lib_dir(CodeGen *g, const char *dir) {
     g->lib_dirs.append(dir);
 }
 
+void codegen_set_ucrt_lib_dir(CodeGen *g, Buf *ucrt_lib_dir) {
+    g->libc_lib_dirs_list.append(ucrt_lib_dir);
+}
+
+void codegen_set_kernel32_lib_dir(CodeGen *g, Buf *kernel32_lib_dir) {
+    g->libc_lib_dirs_list.append(kernel32_lib_dir);
+}
+
 void codegen_add_rpath(CodeGen *g, const char *name) {
     g->rpath_list.append(buf_create_from_str(name));
 }
src/codegen.hpp
@@ -30,7 +30,7 @@ void codegen_set_out_name(CodeGen *codegen, Buf *out_name);
 void codegen_set_libc_lib_dir(CodeGen *codegen, Buf *libc_lib_dir);
 void codegen_set_libc_static_lib_dir(CodeGen *g, Buf *libc_static_lib_dir);
 void codegen_set_libc_include_dir(CodeGen *codegen, Buf *libc_include_dir);
-void codegen_set_msvc_lib_dir(CodeGen *codegen, Buf *msvc_lib_dir);
+void codegen_set_ucrt_lib_dir(CodeGen *g, Buf *ucrt_lib_dir);
 void codegen_set_kernel32_lib_dir(CodeGen *codegen, Buf *kernel32_lib_dir);
 void codegen_set_dynamic_linker(CodeGen *g, Buf *dynamic_linker);
 void codegen_set_windows_subsystem(CodeGen *g, bool mwindows, bool mconsole);
src/link.cpp
@@ -402,19 +402,25 @@ static void construct_linker_job_coff(LinkJob *lj) {
     lj->args.append(buf_ptr(buf_sprintf("-OUT:%s", buf_ptr(&lj->out_file))));
 
     if (g->libc_link_lib != nullptr) {
-        lj->args.append(buf_ptr(buf_sprintf("-LIBPATH:%s", buf_ptr(g->msvc_lib_dir))));
-        lj->args.append(buf_ptr(buf_sprintf("-LIBPATH:%s", buf_ptr(g->kernel32_lib_dir))));
-
-        lj->args.append(buf_ptr(buf_sprintf("-LIBPATH:%s", buf_ptr(g->libc_lib_dir))));
-        lj->args.append(buf_ptr(buf_sprintf("-LIBPATH:%s", buf_ptr(g->libc_static_lib_dir))));
+        if (g->libc_link_lib != nullptr) {
+            for (uint32_t i = 0; i < g->libc_lib_dirs_list.length; ++i) {
+                lj->args.append(buf_ptr(buf_sprintf("-LIBPATH:%s", buf_ptr(g->libc_lib_dirs_list.items[i]))));
+            }
+        }
     }
 
     if (lj->link_in_crt) {
         const char *lib_str = g->is_static ? "lib" : "";
         const char *d_str = (g->build_mode == BuildModeDebug) ? "d" : "";
 
-        Buf *cmt_lib_name = buf_sprintf("libcmt%s.lib", d_str);
-        lj->args.append(buf_ptr(cmt_lib_name));
+        if (g->is_static) {
+            Buf *cmt_lib_name = buf_sprintf("libcmt%s.lib", d_str);
+            lj->args.append(buf_ptr(cmt_lib_name));
+        }
+        else {
+            Buf *msvcrt_lib_name = buf_sprintf("msvcrt%s.lib", d_str);
+            lj->args.append(buf_ptr(msvcrt_lib_name));
+        }
 
         Buf *vcruntime_lib_name = buf_sprintf("%svcruntime%s.lib", lib_str, d_str);
         lj->args.append(buf_ptr(vcruntime_lib_name));
@@ -422,6 +428,9 @@ static void construct_linker_job_coff(LinkJob *lj) {
         Buf *crt_lib_name = buf_sprintf("%sucrt%s.lib", lib_str, d_str);
         lj->args.append(buf_ptr(crt_lib_name));
 
+        //Visual C++ 2015 Conformance Changes
+        //https://msdn.microsoft.com/en-us/library/bb531344.aspx
+        lj->args.append("legacy_stdio_definitions.lib");
 
         //if (shared || dll) {
         //    lj->args.append(get_libc_file(g, "dllcrt2.o"));
src/main.cpp
@@ -758,7 +758,7 @@ int main(int argc, char **argv) {
             if (libc_include_dir)
                 codegen_set_libc_include_dir(g, buf_create_from_str(libc_include_dir));
             if (msvc_lib_dir)
-                codegen_set_msvc_lib_dir(g, buf_create_from_str(msvc_lib_dir));
+                codegen_set_ucrt_lib_dir(g, buf_create_from_str(msvc_lib_dir));
             if (kernel32_lib_dir)
                 codegen_set_kernel32_lib_dir(g, buf_create_from_str(kernel32_lib_dir));
             if (dynamic_linker)
src/os.cpp
@@ -26,6 +26,7 @@
 #include <windows.h>
 #include <io.h>
 #include <fcntl.h>
+#include "windows_com.hpp"
 
 typedef SSIZE_T ssize_t;
 #else
@@ -999,3 +1000,321 @@ void os_stderr_set_color(TermColor color) {
     set_color_posix(color);
 #endif
 }
+
+#if defined ZIG_OS_WINDOWS
+int os_find_windows_sdk(ZigWindowsSDK **out_sdk) {
+    ZigWindowsSDK *result_sdk = allocate<ZigWindowsSDK>(1);
+    buf_resize(&result_sdk->path10, 0);
+    buf_resize(&result_sdk->path81, 0);
+
+    HKEY key;
+    HRESULT rc;
+    rc = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows Kits\\Installed Roots", 0, KEY_QUERY_VALUE | KEY_WOW64_32KEY | KEY_ENUMERATE_SUB_KEYS, &key);
+    if (rc != ERROR_SUCCESS) {
+        return ErrorFileNotFound;
+    }
+
+    {
+        DWORD tmp_buf_len = MAX_PATH;
+        buf_resize(&result_sdk->path10, tmp_buf_len);
+        rc = RegQueryValueEx(key, "KitsRoot10", NULL, NULL, (LPBYTE)buf_ptr(&result_sdk->path10), &tmp_buf_len);
+        if (rc == ERROR_FILE_NOT_FOUND) {
+            buf_resize(&result_sdk->path10, 0);
+        } else {
+            buf_resize(&result_sdk->path10, tmp_buf_len);
+        }
+    }
+    {
+        DWORD tmp_buf_len = MAX_PATH;
+        buf_resize(&result_sdk->path81, tmp_buf_len);
+        rc = RegQueryValueEx(key, "KitsRoot81", NULL, NULL, (LPBYTE)buf_ptr(&result_sdk->path81), &tmp_buf_len);
+        if (rc == ERROR_FILE_NOT_FOUND) {
+            buf_resize(&result_sdk->path81, 0);
+        } else {
+            buf_resize(&result_sdk->path81, tmp_buf_len);
+        }
+    }
+
+    if (buf_len(&result_sdk->path10) != 0) {
+        Buf *sdk_lib_dir = buf_sprintf("%s\\Lib\\*", buf_ptr(&result_sdk->path10));
+
+        // enumerate files in sdk path looking for latest version
+        WIN32_FIND_DATA ffd;
+        HANDLE hFind = FindFirstFileA(buf_ptr(sdk_lib_dir), &ffd);
+        if (hFind == INVALID_HANDLE_VALUE) {
+            return ErrorFileNotFound;
+        }
+        int v0 = 0, v1 = 0, v2 = 0, v3 = 0;
+        bool found_version_dir = false;
+        for (;;) {
+            if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
+                int c0 = 0, c1 = 0, c2 = 0, c3 = 0;
+                sscanf(ffd.cFileName, "%d.%d.%d.%d", &c0, &c1, &c2, &c3);
+                if ((c0 > v0) || (c1 > v1) || (c2 > v2) || (c3 > v3)) {
+                    v0 = c0, v1 = c1, v2 = c2, v3 = c3;
+                    buf_init_from_str(&result_sdk->version10, ffd.cFileName);
+                    found_version_dir = true;
+                }
+            }
+            if (FindNextFile(hFind, &ffd) == 0) {
+                FindClose(hFind);
+                break;
+            }
+        }
+        if (!found_version_dir) {
+            buf_resize(&result_sdk->path10, 0);
+        }
+    }
+
+    if (buf_len(&result_sdk->path81) != 0) {
+        Buf *sdk_lib_dir = buf_sprintf("%s\\Lib\\winv*", buf_ptr(&result_sdk->path81));
+
+        // enumerate files in sdk path looking for latest version
+        WIN32_FIND_DATA ffd;
+        HANDLE hFind = FindFirstFileA(buf_ptr(sdk_lib_dir), &ffd);
+        if (hFind == INVALID_HANDLE_VALUE) {
+            return ErrorFileNotFound;
+        }
+        int v0 = 0, v1 = 0;
+        bool found_version_dir = false;
+        for (;;) {
+            if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
+                int c0 = 0, c1 = 0;
+                sscanf(ffd.cFileName, "winv%d.%d", &c0, &c1);
+                if ((c0 > v0) || (c1 > v1)) {
+                    v0 = c0, v1 = c1;
+                    buf_init_from_str(&result_sdk->version81, ffd.cFileName);
+                    found_version_dir = true;
+                }
+            }
+            if (FindNextFile(hFind, &ffd) == 0) {
+                FindClose(hFind);
+                break;
+            }
+        }
+        if (!found_version_dir) {
+            buf_resize(&result_sdk->path81, 0);
+        }
+    }
+
+    *out_sdk = result_sdk;
+    return 0;
+}
+
+int os_get_win32_vcruntime_path(Buf* output_buf, ZigLLVM_ArchType platform_type) {
+    buf_resize(output_buf, 0);
+    //COM Smart Pointerse requires explicit scope
+    {
+        HRESULT rc;
+        rc = CoInitializeEx(NULL, COINIT_MULTITHREADED);
+        if (rc != S_OK) {
+            goto com_done;
+        }
+
+        //This COM class is installed when a VS2017
+        ISetupConfigurationPtr setup_config;
+        rc = setup_config.CreateInstance(__uuidof(SetupConfiguration));
+        if (rc != S_OK) {
+            goto com_done;
+        }
+
+        IEnumSetupInstancesPtr all_instances;
+        rc = setup_config->EnumInstances(&all_instances);
+        if (rc != S_OK) {
+            goto com_done;
+        }
+
+        ISetupInstance* curr_instance;
+        ULONG found_inst;
+        while ((rc = all_instances->Next(1, &curr_instance, &found_inst) == S_OK)) {
+            BSTR bstr_inst_path;
+            rc = curr_instance->GetInstallationPath(&bstr_inst_path);
+            if (rc != S_OK) {
+                goto com_done;
+            }
+            //BSTRs are UTF-16 encoded, so we need to convert the string & adjust the length
+            UINT bstr_path_len = *((UINT*)bstr_inst_path - 1);
+            ULONG tmp_path_len = bstr_path_len / 2 + 1;
+            char* conv_path = (char*)bstr_inst_path;
+            char *tmp_path = (char*)alloca(tmp_path_len);
+            memset(tmp_path, 0, tmp_path_len);
+            uint32_t c = 0;
+            for (uint32_t i = 0; i < bstr_path_len; i += 2) {
+                tmp_path[c] = conv_path[i];
+                ++c;
+                assert(c != tmp_path_len);
+            }
+
+            buf_append_str(output_buf, tmp_path);
+            buf_append_char(output_buf, '\\');
+
+            Buf* tmp_buf = buf_alloc();
+            buf_append_buf(tmp_buf, output_buf);
+            buf_append_str(tmp_buf, "VC\\Auxiliary\\Build\\Microsoft.VCToolsVersion.default.txt");
+            FILE* tools_file = fopen(buf_ptr(tmp_buf), "r");
+            if (!tools_file) {
+                goto com_done;
+            }
+            memset(tmp_path, 0, tmp_path_len);
+            fgets(tmp_path, tmp_path_len, tools_file);
+            strtok(tmp_path, " \r\n");
+            fclose(tools_file);
+            buf_appendf(output_buf, "VC\\Tools\\MSVC\\%s\\lib\\", tmp_path);
+            switch (platform_type) {
+            case ZigLLVM_x86:
+                buf_append_str(output_buf, "x86\\");
+                break;
+            case ZigLLVM_x86_64:
+                buf_append_str(output_buf, "x64\\");
+                break;
+            case ZigLLVM_arm:
+                buf_append_str(output_buf, "arm\\");
+                break;
+            default:
+                zig_panic("Attemped to use vcruntime for non-supported platform.");
+            }
+            buf_resize(tmp_buf, 0);
+            buf_append_buf(tmp_buf, output_buf);
+            buf_append_str(tmp_buf, "vcruntime.lib");
+
+            if (GetFileAttributesA(buf_ptr(tmp_buf)) != INVALID_FILE_ATTRIBUTES) {
+                return 0;
+            }
+        }
+    }
+
+com_done:;
+    HKEY key;
+    HRESULT rc;
+    rc = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\VisualStudio\\SxS\\VS7", 0, KEY_QUERY_VALUE | KEY_WOW64_32KEY, &key);
+    if (rc != ERROR_SUCCESS) {
+        return ErrorFileNotFound;
+    }
+
+    DWORD dw_type = 0;
+    DWORD cb_data = 0;
+    rc = RegQueryValueEx(key, "14.0", NULL, &dw_type, NULL, &cb_data);
+    if ((rc == ERROR_FILE_NOT_FOUND) || (REG_SZ != dw_type)) {
+        return ErrorFileNotFound;
+    }
+
+    Buf* tmp_buf = buf_alloc_fixed(cb_data);
+    RegQueryValueExA(key, "14.0", NULL, NULL, (LPBYTE)buf_ptr(tmp_buf), &cb_data);
+    //RegQueryValueExA returns the length of the string INCLUDING the null terminator
+    buf_resize(tmp_buf, cb_data-1);
+    buf_append_str(tmp_buf, "VC\\Lib\\");
+    switch (platform_type) {
+    case ZigLLVM_x86:
+        //x86 is in the root of the Lib folder
+        break;
+    case ZigLLVM_x86_64:
+        buf_append_str(tmp_buf, "amd64\\");
+        break;
+    case ZigLLVM_arm:
+        buf_append_str(tmp_buf, "arm\\");
+        break;
+    default:
+        zig_panic("Attemped to use vcruntime for non-supported platform.");
+    }
+
+    buf_append_buf(output_buf, tmp_buf);
+    buf_append_str(tmp_buf, "vcruntime.lib");
+
+    if (GetFileAttributesA(buf_ptr(tmp_buf)) != INVALID_FILE_ATTRIBUTES) {
+        return 0;
+    } else {
+        buf_resize(output_buf, 0);
+        return ErrorFileNotFound;
+    }
+}
+
+int os_get_win32_ucrt_lib_path(ZigWindowsSDK *sdk, Buf* output_buf, ZigLLVM_ArchType platform_type) {
+    buf_resize(output_buf, 0);
+    buf_appendf(output_buf, "%s\\Lib\\%s\\ucrt\\", buf_ptr(&sdk->path10), buf_ptr(&sdk->version10));
+    switch (platform_type) {
+    case ZigLLVM_x86:
+        buf_append_str(output_buf, "x86\\");
+        break;
+    case ZigLLVM_x86_64:
+        buf_append_str(output_buf, "x64\\");
+        break;
+    case ZigLLVM_arm:
+        buf_append_str(output_buf, "arm\\");
+        break;
+    default:
+        zig_panic("Attemped to use vcruntime for non-supported platform.");
+    }
+    Buf* tmp_buf = buf_alloc();
+    buf_init_from_buf(tmp_buf, output_buf);
+    buf_append_str(tmp_buf, "ucrt.lib");
+    if (GetFileAttributesA(buf_ptr(tmp_buf)) != INVALID_FILE_ATTRIBUTES) {
+        return 0;
+    }
+    else {
+        buf_resize(output_buf, 0);
+        return ErrorFileNotFound;
+    }
+}
+
+int os_get_win32_ucrt_include_path(ZigWindowsSDK *sdk, Buf* output_buf) {
+    buf_resize(output_buf, 0);
+    buf_appendf(output_buf, "%s\\Include\\%s\\ucrt", buf_ptr(&sdk->path10), buf_ptr(&sdk->version10));
+    if (GetFileAttributesA(buf_ptr(output_buf)) != INVALID_FILE_ATTRIBUTES) {
+        return 0;
+    }
+    else {
+        buf_resize(output_buf, 0);
+        return ErrorFileNotFound;
+    }
+}
+
+int os_get_win32_kern32_path(ZigWindowsSDK *sdk, Buf* output_buf, ZigLLVM_ArchType platform_type) {
+    {
+        buf_resize(output_buf, 0);
+        buf_appendf(output_buf, "%s\\Lib\\%s\\um\\", buf_ptr(&sdk->path10), buf_ptr(&sdk->version10));
+        switch (platform_type) {
+        case ZigLLVM_x86:
+            buf_append_str(output_buf, "x86\\");
+            break;
+        case ZigLLVM_x86_64:
+            buf_append_str(output_buf, "x64\\");
+            break;
+        case ZigLLVM_arm:
+            buf_append_str(output_buf, "arm\\");
+            break;
+        default:
+            zig_panic("Attemped to use vcruntime for non-supported platform.");
+        }
+        Buf* tmp_buf = buf_alloc();
+        buf_init_from_buf(tmp_buf, output_buf);
+        buf_append_str(tmp_buf, "kernel32.lib");
+        if (GetFileAttributesA(buf_ptr(tmp_buf)) != INVALID_FILE_ATTRIBUTES) {
+            return 0;
+        }
+    }
+    {
+        buf_resize(output_buf, 0);
+        buf_appendf(output_buf, "%s\\Lib\\%s\\um\\", buf_ptr(&sdk->path81), buf_ptr(&sdk->version81));
+        switch (platform_type) {
+        case ZigLLVM_x86:
+            buf_append_str(output_buf, "x86\\");
+            break;
+        case ZigLLVM_x86_64:
+            buf_append_str(output_buf, "x64\\");
+            break;
+        case ZigLLVM_arm:
+            buf_append_str(output_buf, "arm\\");
+            break;
+        default:
+            zig_panic("Attemped to use vcruntime for non-supported platform.");
+        }
+        Buf* tmp_buf = buf_alloc();
+        buf_init_from_buf(tmp_buf, output_buf);
+        buf_append_str(tmp_buf, "kernel32.lib");
+        if (GetFileAttributesA(buf_ptr(tmp_buf)) != INVALID_FILE_ATTRIBUTES) {
+            return 0;
+        }
+    }
+    return ErrorFileNotFound;
+}
+#endif
src/os.hpp
@@ -11,6 +11,7 @@
 #include "list.hpp"
 #include "buffer.hpp"
 #include "error.hpp"
+#include "zig_llvm.hpp"
 
 #include <stdio.h>
 #include <inttypes.h>
@@ -85,6 +86,20 @@ int os_self_exe_path(Buf *out_path);
 #define ZIG_OS_UNKNOWN
 #endif
 
+struct ZigWindowsSDK {
+    Buf path10;
+    Buf version10;
+    Buf path81;
+    Buf version81;
+};
+#if defined(ZIG_OS_WINDOWS)
+int os_find_windows_sdk(ZigWindowsSDK **out_sdk);
+int os_get_win32_vcruntime_path(Buf *output_buf, ZigLLVM_ArchType platform_type);
+int os_get_win32_ucrt_include_path(ZigWindowsSDK *sdk, Buf *output_buf);
+int os_get_win32_ucrt_lib_path(ZigWindowsSDK *sdk, Buf *output_buf, ZigLLVM_ArchType platform_type);
+int os_get_win32_kern32_path(ZigWindowsSDK *sdk, Buf *output_buf, ZigLLVM_ArchType platform_type);
+#endif
+
 #if defined(__x86_64__)
 #define ZIG_ARCH_X86_64
 #else
src/parsec.cpp
@@ -138,9 +138,9 @@ static AstNode *trans_create_node_fn_call_1(Context *c, AstNode *fn_ref_expr, As
 
 static AstNode *trans_create_node_field_access(Context *c, AstNode *container, Buf *field_name) {
     AstNode *node = trans_create_node(c, NodeTypeFieldAccessExpr);
-	if (container->type == NodeTypeSymbol) {
-		assert(container->data.symbol_expr.symbol != nullptr);
-	}
+    if (container->type == NodeTypeSymbol) {
+        assert(container->data.symbol_expr.symbol != nullptr);
+    }
     node->data.field_access_expr.struct_expr = container;
     node->data.field_access_expr.field_name = field_name;
     return node;
src/util.hpp
@@ -48,17 +48,17 @@ static inline void zig_unreachable(void) {
 
 #if defined(_MSC_VER)
 static inline int clzll(unsigned long long mask) {
-	unsigned long lz;
+    unsigned long lz;
 #if defined(_WIN64)
-	if (_BitScanReverse64(&lz, mask))
-		return static_cast<int>(63 - lz);
-	zig_unreachable();
+    if (_BitScanReverse64(&lz, mask))
+        return static_cast<int>(63 - lz);
+    zig_unreachable();
 #else
-	if (_BitScanReverse(&lz, mask >> 32))
-		lz += 32;
-	else
-		_BitScanReverse(&lz, mask & 0xffffffff);
-	return 63 - lz;
+    if (_BitScanReverse(&lz, mask >> 32))
+        lz += 32;
+    else
+        _BitScanReverse(&lz, mask & 0xffffffff);
+    return 63 - lz;
 #endif
 }
 #else
src/windows_com.hpp
@@ -0,0 +1,901 @@
+// The MIT License(MIT)
+// Copyright(C) Microsoft Corporation.All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//
+
+#pragma once
+
+// Windows headers
+#include <windows.h>
+#include <fcntl.h>
+#include <io.h>
+#include <shellapi.h>
+
+// COM support header files
+#include <comdef.h>
+
+// Constants
+//
+#ifndef E_NOTFOUND
+#define E_NOTFOUND HRESULT_FROM_WIN32(ERROR_NOT_FOUND)
+#endif
+
+#ifndef E_FILENOTFOUND
+#define E_FILENOTFOUND HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND)
+#endif
+
+#ifndef E_NOTSUPPORTED
+#define E_NOTSUPPORTED HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED)
+#endif
+
+// Enumerations
+//
+/// <summary>
+/// The state of an instance.
+/// </summary>
+enum InstanceState
+{
+	/// <summary>
+	/// The instance state has not been determined.
+	/// </summary>
+	eNone = 0,
+
+	/// <summary>
+	/// The instance installation path exists.
+	/// </summary>
+	eLocal = 1,
+
+	/// <summary>
+	/// A product is registered to the instance.
+	/// </summary>
+	eRegistered = 2,
+
+	/// <summary>
+	/// No reboot is required for the instance.
+	/// </summary>
+	eNoRebootRequired = 4,
+
+	/// <summary>
+	/// No errors were reported for the instance.
+	/// </summary>
+	eNoErrors = 8,
+
+	/// <summary>
+	/// The instance represents a complete install.
+	/// </summary>
+	eComplete = UINT_MAX,
+};
+
+// Forward interface declarations
+//
+#ifndef __ISetupInstance_FWD_DEFINED__
+#define __ISetupInstance_FWD_DEFINED__
+typedef struct ISetupInstance ISetupInstance;
+#endif
+
+#ifndef __ISetupInstance2_FWD_DEFINED__
+#define __ISetupInstance2_FWD_DEFINED__
+typedef struct ISetupInstance2 ISetupInstance2;
+#endif
+
+#ifndef __ISetupInstanceCatalog_FWD_DEFINED__
+#define __ISetupInstanceCatalog_FWD_DEFINED__
+typedef struct ISetupInstanceCatalog ISetupInstanceCatalog;
+#endif
+
+#ifndef __ISetupLocalizedProperties_FWD_DEFINED__
+#define __ISetupLocalizedProperties_FWD_DEFINED__
+typedef struct ISetupLocalizedProperties ISetupLocalizedProperties;
+#endif
+
+#ifndef __IEnumSetupInstances_FWD_DEFINED__
+#define __IEnumSetupInstances_FWD_DEFINED__
+typedef struct IEnumSetupInstances IEnumSetupInstances;
+#endif
+
+#ifndef __ISetupConfiguration_FWD_DEFINED__
+#define __ISetupConfiguration_FWD_DEFINED__
+typedef struct ISetupConfiguration ISetupConfiguration;
+#endif
+
+#ifndef __ISetupConfiguration2_FWD_DEFINED__
+#define __ISetupConfiguration2_FWD_DEFINED__
+typedef struct ISetupConfiguration2 ISetupConfiguration2;
+#endif
+
+#ifndef __ISetupPackageReference_FWD_DEFINED__
+#define __ISetupPackageReference_FWD_DEFINED__
+typedef struct ISetupPackageReference ISetupPackageReference;
+#endif
+
+#ifndef __ISetupHelper_FWD_DEFINED__
+#define __ISetupHelper_FWD_DEFINED__
+typedef struct ISetupHelper ISetupHelper;
+#endif
+
+#ifndef __ISetupErrorState_FWD_DEFINED__
+#define __ISetupErrorState_FWD_DEFINED__
+typedef struct ISetupErrorState ISetupErrorState;
+#endif
+
+#ifndef __ISetupErrorState2_FWD_DEFINED__
+#define __ISetupErrorState2_FWD_DEFINED__
+typedef struct ISetupErrorState2 ISetupErrorState2;
+#endif
+
+#ifndef __ISetupFailedPackageReference_FWD_DEFINED__
+#define __ISetupFailedPackageReference_FWD_DEFINED__
+typedef struct ISetupFailedPackageReference ISetupFailedPackageReference;
+#endif
+
+#ifndef __ISetupFailedPackageReference2_FWD_DEFINED__
+#define __ISetupFailedPackageReference2_FWD_DEFINED__
+typedef struct ISetupFailedPackageReference2 ISetupFailedPackageReference2;
+#endif
+
+#ifndef __ISetupPropertyStore_FWD_DEFINED__
+#define __ISetupPropertyStore_FWD_DEFINED__
+typedef struct ISetupPropertyStore ISetupPropertyStore;
+#endif
+
+#ifndef __ISetupLocalizedPropertyStore_FWD_DEFINED__
+#define __ISetupLocalizedPropertyStore_FWD_DEFINED__
+typedef struct ISetupLocalizedPropertyStore ISetupLocalizedPropertyStore;
+#endif
+
+// Forward class declarations
+//
+#ifndef __SetupConfiguration_FWD_DEFINED__
+#define __SetupConfiguration_FWD_DEFINED__
+
+#ifdef __cplusplus
+typedef class SetupConfiguration SetupConfiguration;
+#endif
+
+#endif
+
+#ifndef _MSC_VER
+#define _Deref_out_opt_
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+	// Interface definitions
+	//
+	EXTERN_C const IID IID_ISetupInstance;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// Information about an instance of a product.
+	/// </summary>
+	struct DECLSPEC_UUID("B41463C3-8866-43B5-BC33-2B0676F7F42E") DECLSPEC_NOVTABLE ISetupInstance : public IUnknown
+	{
+		/// <summary>
+		/// Gets the instance identifier (should match the name of the parent instance directory).
+		/// </summary>
+		/// <param name="pbstrInstanceId">The instance identifier.</param>
+		/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist.</returns>
+		STDMETHOD(GetInstanceId)(
+			_Out_ BSTR* pbstrInstanceId
+			) = 0;
+
+	/// <summary>
+	/// Gets the local date and time when the installation was originally installed.
+	/// </summary>
+	/// <param name="pInstallDate">The local date and time when the installation was originally installed.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist and E_NOTFOUND if the property is not defined.</returns>
+	STDMETHOD(GetInstallDate)(
+		_Out_ LPFILETIME pInstallDate
+		) = 0;
+
+	/// <summary>
+	/// Gets the unique name of the installation, often indicating the branch and other information used for telemetry.
+	/// </summary>
+	/// <param name="pbstrInstallationName">The unique name of the installation, often indicating the branch and other information used for telemetry.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist and E_NOTFOUND if the property is not defined.</returns>
+	STDMETHOD(GetInstallationName)(
+		_Out_ BSTR* pbstrInstallationName
+		) = 0;
+
+	/// <summary>
+	/// Gets the path to the installation root of the product.
+	/// </summary>
+	/// <param name="pbstrInstallationPath">The path to the installation root of the product.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist and E_NOTFOUND if the property is not defined.</returns>
+	STDMETHOD(GetInstallationPath)(
+		_Out_ BSTR* pbstrInstallationPath
+		) = 0;
+
+	/// <summary>
+	/// Gets the version of the product installed in this instance.
+	/// </summary>
+	/// <param name="pbstrInstallationVersion">The version of the product installed in this instance.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist and E_NOTFOUND if the property is not defined.</returns>
+	STDMETHOD(GetInstallationVersion)(
+		_Out_ BSTR* pbstrInstallationVersion
+		) = 0;
+
+	/// <summary>
+	/// Gets the display name (title) of the product installed in this instance.
+	/// </summary>
+	/// <param name="lcid">The LCID for the display name.</param>
+	/// <param name="pbstrDisplayName">The display name (title) of the product installed in this instance.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist and E_NOTFOUND if the property is not defined.</returns>
+	STDMETHOD(GetDisplayName)(
+		_In_ LCID lcid,
+		_Out_ BSTR* pbstrDisplayName
+		) = 0;
+
+	/// <summary>
+	/// Gets the description of the product installed in this instance.
+	/// </summary>
+	/// <param name="lcid">The LCID for the description.</param>
+	/// <param name="pbstrDescription">The description of the product installed in this instance.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist and E_NOTFOUND if the property is not defined.</returns>
+	STDMETHOD(GetDescription)(
+		_In_ LCID lcid,
+		_Out_ BSTR* pbstrDescription
+		) = 0;
+
+	/// <summary>
+	/// Resolves the optional relative path to the root path of the instance.
+	/// </summary>
+	/// <param name="pwszRelativePath">A relative path within the instance to resolve, or NULL to get the root path.</param>
+	/// <param name="pbstrAbsolutePath">The full path to the optional relative path within the instance. If the relative path is NULL, the root path will always terminate in a backslash.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist and E_NOTFOUND if the property is not defined.</returns>
+	STDMETHOD(ResolvePath)(
+		_In_opt_z_ LPCOLESTR pwszRelativePath,
+		_Out_ BSTR* pbstrAbsolutePath
+		) = 0;
+	};
+#endif
+
+	EXTERN_C const IID IID_ISetupInstance2;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// Information about an instance of a product.
+	/// </summary>
+	struct DECLSPEC_UUID("89143C9A-05AF-49B0-B717-72E218A2185C") DECLSPEC_NOVTABLE ISetupInstance2 : public ISetupInstance
+	{
+		/// <summary>
+		/// Gets the state of the instance.
+		/// </summary>
+		/// <param name="pState">The state of the instance.</param>
+		/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist.</returns>
+		STDMETHOD(GetState)(
+			_Out_ InstanceState* pState
+			) = 0;
+
+	/// <summary>
+	/// Gets an array of package references registered to the instance.
+	/// </summary>
+	/// <param name="ppsaPackages">Pointer to an array of <see cref="ISetupPackageReference"/>.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist and E_NOTFOUND if the packages property is not defined.</returns>
+	STDMETHOD(GetPackages)(
+		_Out_ LPSAFEARRAY* ppsaPackages
+		) = 0;
+
+	/// <summary>
+	/// Gets a pointer to the <see cref="ISetupPackageReference"/> that represents the registered product.
+	/// </summary>
+	/// <param name="ppPackage">Pointer to an instance of <see cref="ISetupPackageReference"/>. This may be NULL if <see cref="GetState"/> does not return <see cref="eComplete"/>.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist and E_NOTFOUND if the packages property is not defined.</returns>
+	STDMETHOD(GetProduct)(
+		_Outptr_result_maybenull_ ISetupPackageReference** ppPackage
+		) = 0;
+
+	/// <summary>
+	/// Gets the relative path to the product application, if available.
+	/// </summary>
+	/// <param name="pbstrProductPath">The relative path to the product application, if available.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist.</returns>
+	STDMETHOD(GetProductPath)(
+		_Outptr_result_maybenull_ BSTR* pbstrProductPath
+		) = 0;
+
+	/// <summary>
+	/// Gets the error state of the instance, if available.
+	/// </summary>
+	/// <param name="pErrorState">The error state of the instance, if available.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist.</returns>
+	STDMETHOD(GetErrors)(
+		_Outptr_result_maybenull_ ISetupErrorState** ppErrorState
+		) = 0;
+
+	/// <summary>
+	/// Gets a value indicating whether the instance can be launched.
+	/// </summary>
+	/// <param name="pfIsLaunchable">Whether the instance can be launched.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	/// <remarks>
+	/// An instance could have had errors during install but still be launched. Some features may not work correctly, but others will.
+	/// </remarks>
+	STDMETHOD(IsLaunchable)(
+		_Out_ VARIANT_BOOL* pfIsLaunchable
+		) = 0;
+
+	/// <summary>
+	/// Gets a value indicating whether the instance is complete.
+	/// </summary>
+	/// <param name="pfIsLaunchable">Whether the instance is complete.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	/// <remarks>
+	/// An instance is complete if it had no errors during install, resume, or repair.
+	/// </remarks>
+	STDMETHOD(IsComplete)(
+		_Out_ VARIANT_BOOL* pfIsComplete
+		) = 0;
+
+	/// <summary>
+	/// Gets product-specific properties.
+	/// </summary>
+	/// <param name="ppPropeties">A pointer to an instance of <see cref="ISetupPropertyStore"/>. This may be NULL if no properties are defined.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist.</returns>
+	STDMETHOD(GetProperties)(
+		_Outptr_result_maybenull_ ISetupPropertyStore** ppProperties
+		) = 0;
+
+	/// <summary>
+	/// Gets the directory path to the setup engine that installed the instance.
+	/// </summary>
+	/// <param name="pbstrEnginePath">The directory path to the setup engine that installed the instance.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist.</returns>
+	STDMETHOD(GetEnginePath)(
+		_Outptr_result_maybenull_ BSTR* pbstrEnginePath
+		) = 0;
+	};
+#endif
+
+	EXTERN_C const IID IID_ISetupInstanceCatalog;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// Information about a catalog used to install an instance.
+	/// </summary>
+	struct DECLSPEC_UUID("9AD8E40F-39A2-40F1-BF64-0A6C50DD9EEB") DECLSPEC_NOVTABLE ISetupInstanceCatalog : public IUnknown
+	{
+		/// <summary>
+		/// Gets catalog information properties.
+		/// </summary>
+		/// <param name="ppCatalogInfo">A pointer to an instance of <see cref="ISetupPropertyStore"/>.</param>
+		/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist and E_NOTFOUND if the property does not exist.</returns>
+		STDMETHOD(GetCatalogInfo)(
+			_Out_ ISetupPropertyStore** ppCatalogInfo
+			) = 0;
+
+	/// <summary>
+	/// Gets a value indicating whether the catalog is a prerelease.
+	/// </summary>
+	/// <param name="pfIsPrerelease">Whether the catalog for the instance is a prerelease version.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_FILENOTFOUND if the instance state does not exist and E_NOTFOUND if the property does not exist.</returns>
+	STDMETHOD(IsPrerelease)(
+		_Out_ VARIANT_BOOL* pfIsPrerelease
+		) = 0;
+	};
+#endif
+
+	EXTERN_C const IID IID_ISetupLocalizedProperties;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// Provides localized properties of an instance of a product.
+	/// </summary>
+	struct DECLSPEC_UUID("F4BD7382-FE27-4AB4-B974-9905B2A148B0") DECLSPEC_NOVTABLE ISetupLocalizedProperties : public IUnknown
+	{
+		/// <summary>
+		/// Gets localized product-specific properties.
+		/// </summary>
+		/// <param name="ppLocalizedProperties">A pointer to an instance of <see cref="ISetupLocalizedPropertyStore"/>. This may be NULL if no properties are defined.</param>
+		/// <returns>Standard HRESULT indicating success or failure.</returns>
+		STDMETHOD(GetLocalizedProperties)(
+			_Outptr_result_maybenull_ ISetupLocalizedPropertyStore** ppLocalizedProperties
+			) = 0;
+
+	/// <summary>
+	/// Gets localized channel-specific properties.
+	/// </summary>
+	/// <param name="ppLocalizedChannelProperties">A pointer to an instance of <see cref="ISetupLocalizedPropertyStore"/>. This may be NULL if no channel properties are defined.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHOD(GetLocalizedChannelProperties)(
+		_Outptr_result_maybenull_ ISetupLocalizedPropertyStore** ppLocalizedChannelProperties
+		) = 0;
+	};
+#endif
+
+	EXTERN_C const IID IID_IEnumSetupInstances;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// An enumerator of installed <see cref="ISetupInstance"/> objects.
+	/// </summary>
+	struct DECLSPEC_UUID("6380BCFF-41D3-4B2E-8B2E-BF8A6810C848") DECLSPEC_NOVTABLE IEnumSetupInstances : public IUnknown
+	{
+		/// <summary>
+		/// Retrieves the next set of product instances in the enumeration sequence.
+		/// </summary>
+		/// <param name="celt">The number of product instances to retrieve.</param>
+		/// <param name="rgelt">A pointer to an array of <see cref="ISetupInstance"/>.</param>
+		/// <param name="pceltFetched">A pointer to the number of product instances retrieved. If <paramref name="celt"/> is 1 this parameter may be NULL.</param>
+		/// <returns>S_OK if the number of elements were fetched, S_FALSE if nothing was fetched (at end of enumeration), E_INVALIDARG if <paramref name="celt"/> is greater than 1 and pceltFetched is NULL, or E_OUTOFMEMORY if an <see cref="ISetupInstance"/> could not be allocated.</returns>
+		STDMETHOD(Next)(
+			_In_ ULONG celt,
+			_Out_writes_to_(celt, *pceltFetched) ISetupInstance** rgelt,
+			_Out_opt_ _Deref_out_range_(0, celt) ULONG* pceltFetched
+			) = 0;
+
+	/// <summary>
+	/// Skips the next set of product instances in the enumeration sequence.
+	/// </summary>
+	/// <param name="celt">The number of product instances to skip.</param>
+	/// <returns>S_OK if the number of elements could be skipped; otherwise, S_FALSE;</returns>
+	STDMETHOD(Skip)(
+		_In_ ULONG celt
+		) = 0;
+
+	/// <summary>
+	/// Resets the enumeration sequence to the beginning.
+	/// </summary>
+	/// <returns>Always returns S_OK;</returns>
+	STDMETHOD(Reset)(void) = 0;
+
+	/// <summary>
+	/// Creates a new enumeration object in the same state as the current enumeration object: the new object points to the same place in the enumeration sequence.
+	/// </summary>
+	/// <param name="ppenum">A pointer to a pointer to a new <see cref="IEnumSetupInstances"/> interface. If the method fails, this parameter is undefined.</param>
+	/// <returns>S_OK if a clone was returned; otherwise, E_OUTOFMEMORY.</returns>
+	STDMETHOD(Clone)(
+		_Deref_out_opt_ IEnumSetupInstances** ppenum
+		) = 0;
+	};
+#endif
+
+	EXTERN_C const IID IID_ISetupConfiguration;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+
+#ifdef __GNUC__
+    __CRT_UUID_DECL(ISetupConfiguration, 0x42843719, 0xDB4C, 0x46C2, 0x8E, 0x7C, 0x64, 0xF1, 0x81, 0x6E, 0xFD, 0x5B);
+#endif
+
+	/// <summary>
+	/// Gets information about product instances installed on the machine.
+	/// </summary>
+	struct DECLSPEC_UUID("42843719-DB4C-46C2-8E7C-64F1816EFD5B") DECLSPEC_NOVTABLE ISetupConfiguration : public IUnknown
+	{
+		/// <summary>
+		/// Enumerates all launchable product instances installed.
+		/// </summary>
+		/// <param name="ppEnumInstances">An enumeration of completed, installed product instances.</param>
+		/// <returns>Standard HRESULT indicating success or failure.</returns>
+		STDMETHOD(EnumInstances)(
+			_Out_ IEnumSetupInstances** ppEnumInstances
+			) = 0;
+
+	/// <summary>
+	/// Gets the instance for the current process path.
+	/// </summary>
+	/// <param name="ppInstance">The instance for the current process path.</param>
+	/// <returns>
+	/// The instance for the current process path, or E_NOTFOUND if not found.
+	/// The <see cref="ISetupInstance::GetState"/> may indicate the instance is invalid.
+	/// </returns>
+	/// <remarks>
+	/// The returned instance may not be launchable.
+	/// </remarks>
+	STDMETHOD(GetInstanceForCurrentProcess)(
+		_Out_ ISetupInstance** ppInstance
+		) = 0;
+
+	/// <summary>
+	/// Gets the instance for the given path.
+	/// </summary>
+	/// <param name="ppInstance">The instance for the given path.</param>
+	/// <returns>
+	/// The instance for the given path, or E_NOTFOUND if not found.
+	/// The <see cref="ISetupInstance::GetState"/> may indicate the instance is invalid.
+	/// </returns>
+	/// <remarks>
+	/// The returned instance may not be launchable.
+	/// </remarks>
+	STDMETHOD(GetInstanceForPath)(
+		_In_z_ LPCWSTR wzPath,
+		_Out_ ISetupInstance** ppInstance
+		) = 0;
+	};
+#endif
+
+	EXTERN_C const IID IID_ISetupConfiguration2;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// Gets information about product instances.
+	/// </summary>
+	struct DECLSPEC_UUID("26AAB78C-4A60-49D6-AF3B-3C35BC93365D") DECLSPEC_NOVTABLE ISetupConfiguration2 : public ISetupConfiguration
+	{
+		/// <summary>
+		/// Enumerates all product instances.
+		/// </summary>
+		/// <param name="ppEnumInstances">An enumeration of all product instances.</param>
+		/// <returns>Standard HRESULT indicating success or failure.</returns>
+		STDMETHOD(EnumAllInstances)(
+			_Out_ IEnumSetupInstances** ppEnumInstances
+			) = 0;
+	};
+#endif
+
+	EXTERN_C const IID IID_ISetupPackageReference;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// A reference to a package.
+	/// </summary>
+	struct DECLSPEC_UUID("da8d8a16-b2b6-4487-a2f1-594ccccd6bf5") DECLSPEC_NOVTABLE ISetupPackageReference : public IUnknown
+	{
+		/// <summary>
+		/// Gets the general package identifier.
+		/// </summary>
+		/// <param name="pbstrId">The general package identifier.</param>
+		/// <returns>Standard HRESULT indicating success or failure.</returns>
+		STDMETHOD(GetId)(
+			_Out_ BSTR* pbstrId
+			) = 0;
+
+	/// <summary>
+	/// Gets the version of the package.
+	/// </summary>
+	/// <param name="pbstrVersion">The version of the package.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHOD(GetVersion)(
+		_Out_ BSTR* pbstrVersion
+		) = 0;
+
+	/// <summary>
+	/// Gets the target process architecture of the package.
+	/// </summary>
+	/// <param name="pbstrChip">The target process architecture of the package.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHOD(GetChip)(
+		_Out_ BSTR* pbstrChip
+		) = 0;
+
+	/// <summary>
+	/// Gets the language and optional region identifier.
+	/// </summary>
+	/// <param name="pbstrLanguage">The language and optional region identifier.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHOD(GetLanguage)(
+		_Out_ BSTR* pbstrLanguage
+		) = 0;
+
+	/// <summary>
+	/// Gets the build branch of the package.
+	/// </summary>
+	/// <param name="pbstrBranch">The build branch of the package.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHOD(GetBranch)(
+		_Out_ BSTR* pbstrBranch
+		) = 0;
+
+	/// <summary>
+	/// Gets the type of the package.
+	/// </summary>
+	/// <param name="pbstrType">The type of the package.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHOD(GetType)(
+		_Out_ BSTR* pbstrType
+		) = 0;
+
+	/// <summary>
+	/// Gets the unique identifier consisting of all defined tokens.
+	/// </summary>
+	/// <param name="pbstrUniqueId">The unique identifier consisting of all defined tokens.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_UNEXPECTED if no Id was defined (required).</returns>
+	STDMETHOD(GetUniqueId)(
+		_Out_ BSTR* pbstrUniqueId
+		) = 0;
+
+	/// <summary>
+	/// Gets a value indicating whether the package refers to an external extension.
+	/// </summary>
+	/// <param name="pfIsExtension">A value indicating whether the package refers to an external extension.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_UNEXPECTED if no Id was defined (required).</returns>
+	STDMETHOD(GetIsExtension)(
+		_Out_ VARIANT_BOOL* pfIsExtension
+		) = 0;
+	};
+#endif
+
+	EXTERN_C const IID IID_ISetupHelper;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// Helper functions.
+	/// </summary>
+	/// <remarks>
+	/// You can query for this interface from the <see cref="SetupConfiguration"/> class.
+	/// </remarks>
+	struct DECLSPEC_UUID("42b21b78-6192-463e-87bf-d577838f1d5c") DECLSPEC_NOVTABLE ISetupHelper : public IUnknown
+	{
+		/// <summary>
+		/// Parses a dotted quad version string into a 64-bit unsigned integer.
+		/// </summary>
+		/// <param name="pwszVersion">The dotted quad version string to parse, e.g. 1.2.3.4.</param>
+		/// <param name="pullVersion">A 64-bit unsigned integer representing the version. You can compare this to other versions.</param>
+		/// <returns>Standard HRESULT indicating success or failure, including E_INVALIDARG if the version is not valid.</returns>
+		STDMETHOD(ParseVersion)(
+			_In_ LPCOLESTR pwszVersion,
+			_Out_ PULONGLONG pullVersion
+			) = 0;
+
+	/// <summary>
+	/// Parses a dotted quad version string into a 64-bit unsigned integer.
+	/// </summary>
+	/// <param name="pwszVersionRange">The string containing 1 or 2 dotted quad version strings to parse, e.g. [1.0,) that means 1.0.0.0 or newer.</param>
+	/// <param name="pullMinVersion">A 64-bit unsigned integer representing the minimum version, which may be 0. You can compare this to other versions.</param>
+	/// <param name="pullMaxVersion">A 64-bit unsigned integer representing the maximum version, which may be MAXULONGLONG. You can compare this to other versions.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_INVALIDARG if the version range is not valid.</returns>
+	STDMETHOD(ParseVersionRange)(
+		_In_ LPCOLESTR pwszVersionRange,
+		_Out_ PULONGLONG pullMinVersion,
+		_Out_ PULONGLONG pullMaxVersion
+		) = 0;
+	};
+#endif
+
+	EXTERN_C const IID IID_ISetupErrorState;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// Information about the error state of an instance.
+	/// </summary>
+	struct DECLSPEC_UUID("46DCCD94-A287-476A-851E-DFBC2FFDBC20") DECLSPEC_NOVTABLE ISetupErrorState : public IUnknown
+	{
+		/// <summary>
+		/// Gets an array of failed package references.
+		/// </summary>
+		/// <param name="ppsaPackages">Pointer to an array of <see cref="ISetupFailedPackageReference"/>, if packages have failed.</param>
+		/// <returns>Standard HRESULT indicating success or failure.</returns>
+		STDMETHOD(GetFailedPackages)(
+			_Outptr_result_maybenull_ LPSAFEARRAY* ppsaFailedPackages
+			) = 0;
+
+	/// <summary>
+	/// Gets an array of skipped package references.
+	/// </summary>
+	/// <param name="ppsaPackages">Pointer to an array of <see cref="ISetupPackageReference"/>, if packages have been skipped.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHOD(GetSkippedPackages)(
+		_Outptr_result_maybenull_ LPSAFEARRAY* ppsaSkippedPackages
+		) = 0;
+	};
+#endif
+
+	EXTERN_C const IID IID_ISetupErrorState2;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// Information about the error state of an instance.
+	/// </summary>
+	struct DECLSPEC_UUID("9871385B-CA69-48F2-BC1F-7A37CBF0B1EF") DECLSPEC_NOVTABLE ISetupErrorState2 : public ISetupErrorState
+	{
+		/// <summary>
+		/// Gets the path to the error log.
+		/// </summary>
+		/// <param name="pbstrChip">The path to the error log.</param>
+		/// <returns>Standard HRESULT indicating success or failure.</returns>
+		STDMETHOD(GetErrorLogFilePath)(
+			_Outptr_result_maybenull_ BSTR* pbstrErrorLogFilePath
+			) = 0;
+
+	/// <summary>
+	/// Gets the path to the main setup log.
+	/// </summary>
+	/// <param name="pbstrChip">The path to the main setup log.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHOD(GetLogFilePath)(
+		_Outptr_result_maybenull_ BSTR* pbstrLogFilePath
+		) = 0;
+	};
+#endif
+
+	EXTERN_C const IID IID_ISetupFailedPackageReference;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// A reference to a failed package.
+	/// </summary>
+	struct DECLSPEC_UUID("E73559CD-7003-4022-B134-27DC650B280F") DECLSPEC_NOVTABLE ISetupFailedPackageReference : public ISetupPackageReference
+	{
+	};
+
+#endif
+
+	EXTERN_C const IID IID_ISetupFailedPackageReference2;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// A reference to a failed package.
+	/// </summary>
+	struct DECLSPEC_UUID("0FAD873E-E874-42E3-B268-4FE2F096B9CA") DECLSPEC_NOVTABLE ISetupFailedPackageReference2 : public ISetupFailedPackageReference
+	{
+		/// <summary>
+		/// Gets the path to the optional package log.
+		/// </summary>
+		/// <param name="pbstrId">The path to the optional package log.</param>
+		/// <returns>Standard HRESULT indicating success or failure.</returns>
+		STDMETHOD(GetLogFilePath)(
+			_Outptr_result_maybenull_ BSTR* pbstrLogFilePath
+			) = 0;
+
+	/// <summary>
+	/// Gets the description of the package failure.
+	/// </summary>
+	/// <param name="pbstrId">The description of the package failure.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHOD(GetDescription)(
+		_Outptr_result_maybenull_ BSTR* pbstrDescription
+		) = 0;
+
+	/// <summary>
+	/// Gets the signature to use for feedback reporting.
+	/// </summary>
+	/// <param name="pbstrId">The signature to use for feedback reporting.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHOD(GetSignature)(
+		_Outptr_result_maybenull_ BSTR* pbstrSignature
+		) = 0;
+
+	/// <summary>
+	///  Gets the array of details for this package failure.
+	/// </summary>
+	/// <param name="ppsaDetails">Pointer to an array of details as BSTRs.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHOD(GetDetails)(
+		_Out_ LPSAFEARRAY* ppsaDetails
+		) = 0;
+
+	/// <summary>
+	/// Gets an array of packages affected by this package failure.
+	/// </summary>
+	/// <param name="ppsaPackages">Pointer to an array of <see cref="ISetupPackageReference"/> for packages affected by this package failure. This may be NULL.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHOD(GetAffectedPackages)(
+		_Out_ LPSAFEARRAY* ppsaAffectedPackages
+		) = 0;
+	};
+
+#endif
+
+	EXTERN_C const IID IID_ISetupPropertyStore;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// Provides named properties.
+	/// </summary>
+	/// <remarks>
+	/// You can get this from an <see cref="ISetupInstance"/>, <see cref="ISetupPackageReference"/>, or derivative.
+	/// </remarks>
+	struct DECLSPEC_UUID("C601C175-A3BE-44BC-91F6-4568D230FC83") DECLSPEC_NOVTABLE ISetupPropertyStore : public IUnknown
+	{
+		/// <summary>
+		/// Gets an array of property names in this property store.
+		/// </summary>
+		/// <param name="ppsaNames">Pointer to an array of property names as BSTRs.</param>
+		/// <returns>Standard HRESULT indicating success or failure.</returns>
+		STDMETHOD(GetNames)(
+			_Out_ LPSAFEARRAY* ppsaNames
+			) = 0;
+
+	/// <summary>
+	/// Gets the value of a named property in this property store.
+	/// </summary>
+	/// <param name="pwszName">The name of the property to get.</param>
+	/// <param name="pvtValue">The value of the property.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_NOTFOUND if the property is not defined or E_NOTSUPPORTED if the property type is not supported.</returns>
+	STDMETHOD(GetValue)(
+		_In_ LPCOLESTR pwszName,
+		_Out_ LPVARIANT pvtValue
+		) = 0;
+	};
+
+#endif
+
+	EXTERN_C const IID IID_ISetupLocalizedPropertyStore;
+
+#if defined(__cplusplus) && !defined(CINTERFACE)
+	/// <summary>
+	/// Provides localized named properties.
+	/// </summary>
+	/// <remarks>
+	/// You can get this from an <see cref="ISetupLocalizedProperties"/>.
+	/// </remarks>
+	struct DECLSPEC_UUID("5BB53126-E0D5-43DF-80F1-6B161E5C6F6C") DECLSPEC_NOVTABLE ISetupLocalizedPropertyStore : public IUnknown
+	{
+		/// <summary>
+		/// Gets an array of property names in this property store.
+		/// </summary>
+		/// <param name="lcid">The LCID for the property names.</param>
+		/// <param name="ppsaNames">Pointer to an array of property names as BSTRs.</param>
+		/// <returns>Standard HRESULT indicating success or failure.</returns>
+		STDMETHOD(GetNames)(
+			_In_ LCID lcid,
+			_Out_ LPSAFEARRAY* ppsaNames
+			) = 0;
+
+	/// <summary>
+	/// Gets the value of a named property in this property store.
+	/// </summary>
+	/// <param name="pwszName">The name of the property to get.</param>
+	/// <param name="lcid">The LCID for the property.</param>
+	/// <param name="pvtValue">The value of the property.</param>
+	/// <returns>Standard HRESULT indicating success or failure, including E_NOTFOUND if the property is not defined or E_NOTSUPPORTED if the property type is not supported.</returns>
+	STDMETHOD(GetValue)(
+		_In_ LPCOLESTR pwszName,
+		_In_ LCID lcid,
+		_Out_ LPVARIANT pvtValue
+		) = 0;
+	};
+
+#endif
+
+	// Class declarations
+	//
+	EXTERN_C const CLSID CLSID_SetupConfiguration;
+
+#ifdef __cplusplus
+
+#ifdef __GNUC__
+    __CRT_UUID_DECL(SetupConfiguration, 0x177F0C4A, 0x1CD3, 0x4DE7, 0xA3, 0x2C, 0x71, 0xDB, 0xBB, 0x9F, 0xA3, 0x6D);
+#endif
+
+	/// <summary>
+	/// This class implements <see cref="ISetupConfiguration"/>, <see cref="ISetupConfiguration2"/>, and <see cref="ISetupHelper"/>.
+	/// </summary>
+	class DECLSPEC_UUID("177F0C4A-1CD3-4DE7-A32C-71DBBB9FA36D") SetupConfiguration;
+#endif
+	// Function declarations
+	//
+	/// <summary>
+	/// Gets an <see cref="ISetupConfiguration"/> that provides information about product instances installed on the machine.
+	/// </summary>
+	/// <param name="ppConfiguration">The <see cref="ISetupConfiguration"/> that provides information about product instances installed on the machine.</param>
+	/// <param name="pReserved">Reserved for future use.</param>
+	/// <returns>Standard HRESULT indicating success or failure.</returns>
+	STDMETHODIMP GetSetupConfiguration(
+		_Out_ ISetupConfiguration** ppConfiguration,
+		_Reserved_ LPVOID pReserved
+	);
+
+#ifdef __cplusplus
+}
+#endif
+
+_COM_SMARTPTR_TYPEDEF(ISetupInstance, __uuidof(ISetupInstance));
+_COM_SMARTPTR_TYPEDEF(ISetupInstance2, __uuidof(ISetupInstance2));
+_COM_SMARTPTR_TYPEDEF(IEnumSetupInstances, __uuidof(IEnumSetupInstances));
+_COM_SMARTPTR_TYPEDEF(ISetupConfiguration, __uuidof(ISetupConfiguration));
+_COM_SMARTPTR_TYPEDEF(ISetupConfiguration2, __uuidof(ISetupConfiguration2));
+_COM_SMARTPTR_TYPEDEF(ISetupHelper, __uuidof(ISetupHelper));
+_COM_SMARTPTR_TYPEDEF(ISetupPackageReference, __uuidof(ISetupPackageReference));
+_COM_SMARTPTR_TYPEDEF(ISetupPropertyStore, __uuidof(ISetupPropertyStore));
+_COM_SMARTPTR_TYPEDEF(ISetupInstanceCatalog, __uuidof(ISetupInstanceCatalog));