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794 lines (647 loc) · 28.4 KB
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//
// Author: Jonathan Blow
// Version: 1
// Date: 31 August, 2018
//
// This code is released under the MIT license, which you can find at
//
// https://opensource.org/licenses/MIT
//
//
//
// See the comments for how to use this library just below the includes.
//
#include <wtypesbase.h>
#include <io.h> // For _get_osfhandle
#pragma comment(lib, "Advapi32.lib")
#pragma comment(lib, "Ole32.lib")
#pragma comment(lib, "OleAut32.lib")
//
// HOW TO USE THIS CODE
//
// The purpose of this file is to find the folders that contain libraries
// you may need to link against, on Windows, if you are linking with any
// compiled C or C++ code. This will be necessary for many non-C++ programming
// language environments that want to provide compatibility.
//
// We find the place where the Visual Studio libraries live (for example,
// libvcruntime.lib), where the linker and compiler executables live
// (for example, link.exe), and where the Windows SDK libraries reside
// (kernel32.lib, libucrt.lib).
//
// We all wish you didn't have to worry about so many weird dependencies,
// but we don't really have a choice about this, sadly.
//
// I don't claim that this is the absolute best way to solve this problem,
// and so far we punt on things (if you have multiple versions of Visual Studio
// installed, we return the first one, rather than the newest). But it
// will solve the basic problem for you as simply as I know how to do it,
// and because there isn't too much code here, it's easy to modify and expand.
//
//
// Here is the API you need to know about:
//
gb_global gbAllocator mc_allocator = permanent_allocator();
struct Find_Result {
int windows_sdk_version; // Zero if no Windows SDK found.
String windows_sdk_bin_path;
String windows_sdk_um_library_path;
String windows_sdk_ucrt_library_path;
String vs_exe_path;
String vs_library_path;
};
gb_internal String mc_wstring_to_string(wchar_t const *str) {
return string16_to_string(mc_allocator, make_string16_c(cast(u16 *)str));
}
gb_internal String16 mc_string_to_wstring(String str) {
return string_to_string16(mc_allocator, str);
}
gb_internal String mc_concat(String a, String b) {
return concatenate_strings(mc_allocator, a, b);
}
gb_internal String mc_concat(String a, String b, String c) {
return concatenate3_strings(mc_allocator, a, b, c);
}
gb_internal String mc_concat(String a, String b, String c, String d) {
return concatenate4_strings(mc_allocator, a, b, c, d);
}
gb_internal String mc_get_env(String key) {
char const * value = gb_get_env((char const *)key.text, mc_allocator);
return make_string_c(value);
}
gb_internal void mc_free(String str) {
if (str.len) gb_free(mc_allocator, str.text);
}
gb_internal void mc_free(String16 str) {
if (str.len) gb_free(mc_allocator, str.text);
}
typedef struct _MC_Find_Data {
DWORD file_attributes;
String filename;
} MC_Find_Data;
gb_internal HANDLE mc_find_first(String wildcard, MC_Find_Data *find_data) {
WIN32_FIND_DATAW _find_data;
String16 wildcard_wide = mc_string_to_wstring(wildcard);
defer (mc_free(wildcard_wide));
HANDLE handle = FindFirstFileW(cast(wchar_t *)wildcard_wide.text, &_find_data);
if (handle == INVALID_HANDLE_VALUE) return INVALID_HANDLE_VALUE;
find_data->file_attributes = _find_data.dwFileAttributes;
find_data->filename = mc_wstring_to_string(_find_data.cFileName);
return handle;
}
gb_internal bool mc_find_next(HANDLE handle, MC_Find_Data *find_data) {
WIN32_FIND_DATAW _find_data;
bool success = !!FindNextFileW(handle, &_find_data);
find_data->file_attributes = _find_data.dwFileAttributes;
find_data->filename = mc_wstring_to_string(_find_data.cFileName);
return success;
}
gb_internal void mc_find_close(HANDLE handle) {
FindClose(handle);
}
//
// Call find_visual_studio_and_windows_sdk, look at the resulting
// paths, then call free_resources on the result.
//
// Everything else in this file is implementation details that you
// don't need to care about.
//
//
// This file was about 400 lines before we started adding these comments.
// You might think that's way too much code to do something as simple
// as finding a few library and executable paths. I agree. However,
// Microsoft's own solution to this problem, called "vswhere", is a
// mere EIGHT THOUSAND LINE PROGRAM, spread across 70 files,
// that they posted to github *unironically*.
//
// I am not making this up: https://github.com/Microsoft/vswhere
//
// Several people have therefore found the need to solve this problem
// themselves. We referred to some of these other solutions when
// figuring out what to do, most prominently ziglang's version,
// by Ryan Saunderson.
//
// I hate this kind of code. The fact that we have to do this at all
// is stupid, and the actual maneuvers we need to go through
// are just painful. If programming were like this all the time,
// I would quit.
//
// Because this is such an absurd waste of time, I felt it would be
// useful to package the code in an easily-reusable way, in the
// style of the stb libraries. We haven't gone as all-out as some
// of the stb libraries do (which compile in C with no includes, often).
// For this version you need C++ and the headers at the top of the file.
//
// We return the strings as Windows wide character strings. Aesthetically
// I don't like that (I think most sane programs are UTF-8 internally),
// but apparently, not all valid Windows file paths can even be converted
// correctly to UTF-8. So have fun with that. It felt safest and simplest
// to stay with wchar_t since all of this code is fully ensconced in
// Windows crazy-land.
//
// One other shortcut I took is that this is hardcoded to return the
// folders for x64 libraries. If you want x86 or arm, you can make
// slight edits to the code below, or, if enough people want this,
// I can work it in here.
//
// COM objects for the ridiculous Microsoft craziness.
typedef WCHAR* BSTR;
typedef const WCHAR* LPCOLESTR;
struct DECLSPEC_UUID("B41463C3-8866-43B5-BC33-2B0676F7F42E") DECLSPEC_NOVTABLE ISetupInstance : public IUnknown
{
virtual HRESULT STDMETHODCALLTYPE GetInstanceId(BSTR* pbstrInstanceId) = 0;
virtual HRESULT STDMETHODCALLTYPE GetInstallDate(LPFILETIME pInstallDate) = 0;
virtual HRESULT STDMETHODCALLTYPE GetInstallationName(BSTR* pbstrInstallationName) = 0;
virtual HRESULT STDMETHODCALLTYPE GetInstallationPath(BSTR* pbstrInstallationPath) = 0;
virtual HRESULT STDMETHODCALLTYPE GetInstallationVersion(BSTR* pbstrInstallationVersion) = 0;
virtual HRESULT STDMETHODCALLTYPE GetDisplayName(LCID lcid, BSTR* pbstrDisplayName) = 0;
virtual HRESULT STDMETHODCALLTYPE GetDescription(LCID lcid, BSTR* pbstrDescription) = 0;
virtual HRESULT STDMETHODCALLTYPE ResolvePath(LPCOLESTR pwszRelativePath, BSTR* pbstrAbsolutePath) = 0;
};
struct DECLSPEC_UUID("6380BCFF-41D3-4B2E-8B2E-BF8A6810C848") DECLSPEC_NOVTABLE IEnumSetupInstances : public IUnknown
{
virtual HRESULT STDMETHODCALLTYPE Next(ULONG celt, ISetupInstance** rgelt, ULONG* pceltFetched) = 0;
virtual HRESULT STDMETHODCALLTYPE Skip(ULONG celt) = 0;
virtual HRESULT STDMETHODCALLTYPE Reset(void) = 0;
virtual HRESULT STDMETHODCALLTYPE Clone(IEnumSetupInstances** ppenum) = 0;
};
struct DECLSPEC_UUID("42843719-DB4C-46C2-8E7C-64F1816EFD5B") DECLSPEC_NOVTABLE ISetupConfiguration : public IUnknown
{
virtual HRESULT STDMETHODCALLTYPE EnumInstances(IEnumSetupInstances** ppEnumInstances) = 0;
virtual HRESULT STDMETHODCALLTYPE GetInstanceForCurrentProcess(ISetupInstance** ppInstance) = 0;
virtual HRESULT STDMETHODCALLTYPE GetInstanceForPath(LPCWSTR wzPath, ISetupInstance** ppInstance) = 0;
};
// The beginning of the actual code that does things.
struct Version_Data {
i32 best_version[4];
String best_name;
};
typedef void (*MC_Visit_Proc)(String short_name, String full_name, Version_Data *data);
gb_internal bool mc_visit_files(String dir_name, Version_Data *data, MC_Visit_Proc proc) {
// Visit everything in one folder (non-recursively). If it's a directory
// that doesn't start with ".", call the visit proc on it. The visit proc
// will see if the filename conforms to the expected versioning pattern.
String wildcard_name = mc_concat(dir_name, str_lit("*"));
defer (mc_free(wildcard_name));
MC_Find_Data find_data;
HANDLE handle = mc_find_first(wildcard_name, &find_data);
if (handle == INVALID_HANDLE_VALUE) return false;
bool success = true;
while (success) {
if ((find_data.file_attributes & FILE_ATTRIBUTE_DIRECTORY) && (find_data.filename[0] != '.')) {
String full_name = mc_concat(dir_name, find_data.filename);
defer (mc_free(full_name));
proc(find_data.filename, full_name, data);
}
success = mc_find_next(handle, &find_data);
if (!success) break;
}
mc_find_close(handle);
return true;
}
gb_internal String find_windows_kit_root(HKEY key, String const version) {
// Given a key to an already opened registry entry,
// get the value stored under the 'version' subkey.
// If that's not the right terminology, hey, I never do registry stuff.
char *version_str = (char*)version.text;
DWORD required_length;
auto rc = RegQueryValueExA(key, version_str, NULL, NULL, NULL, &required_length);
if (rc != 0) return {};
DWORD length = required_length + 2; // The +2 is for the maybe optional zero later on. Probably we are over-allocating.
char *c_str = gb_alloc_array(mc_allocator, char, length);
rc = RegQueryValueExA(key, version_str, NULL, NULL, (LPBYTE)c_str, &length); // We know that version is zero-terminated...
if (rc != 0) return {};
// The documentation says that if the string for some reason was not stored
// with zero-termination, we need to manually terminate it. Sigh!!
if (c_str[required_length]) {
c_str[required_length+1] = 0;
}
String value = make_string_c(c_str);
return value;
}
gb_internal void win10_best(String short_name, String full_name, Version_Data *data) {
// Find the Windows 10 subdirectory with the highest version number.
int i0, i1, i2, i3;
auto success = sscanf_s((const char *const)short_name.text, "%d.%d.%d.%d", &i0, &i1, &i2, &i3);
if (success < 4) return;
if (i0 < data->best_version[0]) return;
else if (i0 == data->best_version[0]) {
if (i1 < data->best_version[1]) return;
else if (i1 == data->best_version[1]) {
if (i2 < data->best_version[2]) return;
else if (i2 == data->best_version[2]) {
if (i3 < data->best_version[3]) return;
}
}
}
// we have to copy_string and free here because visit_files free's the full_name string
// after we execute this function, so Win*_Data would contain an invalid pointer.
if (data->best_name.len) mc_free(data->best_name);
data->best_name = copy_string(mc_allocator, full_name);
if (data->best_name.len) {
data->best_version[0] = i0;
data->best_version[1] = i1;
data->best_version[2] = i2;
data->best_version[3] = i3;
}
}
gb_internal void find_windows_kit_paths(Find_Result *result) {
bool sdk_found = false;
HKEY main_key;
auto rc = RegOpenKeyExA(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows Kits\\Installed Roots",
0, KEY_QUERY_VALUE | KEY_WOW64_32KEY | KEY_ENUMERATE_SUB_KEYS, &main_key);
if (rc != S_OK) return;
defer (RegCloseKey(main_key));
// Look for a Windows 10 entry.
String windows10_root = find_windows_kit_root(main_key, str_lit("KitsRoot10"));
if (windows10_root.len) {
defer (mc_free(windows10_root));
String windows10_lib = mc_concat(windows10_root, str_lit("Lib\\"));
Version_Data data_lib = {0};
mc_visit_files(windows10_lib, &data_lib, win10_best);
defer (mc_free(windows10_lib));
defer (mc_free(data_lib.best_name));
String windows10_bin = mc_concat(windows10_root, str_lit("bin\\"));
Version_Data data_bin = {0};
mc_visit_files(windows10_bin, &data_bin, win10_best);
defer (mc_free(windows10_bin));
defer (mc_free(data_bin.best_name));
if (data_lib.best_name.len && data_bin.best_name.len) {
if (build_context.metrics.arch == TargetArch_amd64) {
result->windows_sdk_um_library_path = mc_concat(data_lib.best_name, str_lit("\\um\\x64\\"));
result->windows_sdk_ucrt_library_path = mc_concat(data_lib.best_name, str_lit("\\ucrt\\x64\\"));
result->windows_sdk_bin_path = mc_concat(data_bin.best_name, str_lit("\\x64\\"));
sdk_found = true;
} else if (build_context.metrics.arch == TargetArch_i386) {
result->windows_sdk_um_library_path = mc_concat(data_lib.best_name, str_lit("\\um\\x86\\"));
result->windows_sdk_ucrt_library_path = mc_concat(data_lib.best_name, str_lit("\\ucrt\\x86\\"));
result->windows_sdk_bin_path = mc_concat(data_bin.best_name, str_lit("\\x86\\"));
sdk_found = true;
}
}
}
if (sdk_found) {
result->windows_sdk_version = 10;
}
}
gb_internal bool find_visual_studio_by_fighting_through_microsoft_craziness(Find_Result *result) {
// The name of this procedure is kind of cryptic. Its purpose is
// to fight through Microsoft craziness. The things that the fine
// Visual Studio team want you to do, JUST TO FIND A SINGLE FOLDER
// THAT EVERYONE NEEDS TO FIND, are ridiculous garbage.
// For earlier versions of Visual Studio, you'd find this information in the registry,
// similarly to the Windows Kits above. But no, now it's the future, so to ask the
// question "Where is the Visual Studio folder?" you have to do a bunch of COM object
// instantiation, enumeration, and querying. (For extra bonus points, try doing this in
// a new, underdeveloped programming language where you don't have COM routines up
// and running yet. So fun.)
//
// If all this COM object instantiation, enumeration, and querying doesn't give us
// a useful result, we drop back to the registry-checking method.
auto rc = CoInitialize(NULL);
// "Subsequent valid calls return false." So ignore false.
if (rc != S_OK) return false;
GUID my_uid = {0x42843719, 0xDB4C, 0x46C2, {0x8E, 0x7C, 0x64, 0xF1, 0x81, 0x6E, 0xFD, 0x5B}};
GUID CLSID_SetupConfiguration = {0x177F0C4A, 0x1CD3, 0x4DE7, {0xA3, 0x2C, 0x71, 0xDB, 0xBB, 0x9F, 0xA3, 0x6D}};
ISetupConfiguration *config = NULL;
HRESULT hr = 0;
hr = CoCreateInstance(CLSID_SetupConfiguration, NULL, CLSCTX_INPROC_SERVER, my_uid, (void **)&config);
if (hr == 0) {
defer (config->Release());
IEnumSetupInstances *instances = NULL;
hr = config->EnumInstances(&instances);
if (hr != 0) return false;
if (!instances) return false;
defer (instances->Release());
for (;;) {
ULONG found = 0;
ISetupInstance *instance = NULL;
auto hr = instances->Next(1, &instance, &found);
if (hr != S_OK) break;
defer (instance->Release());
wchar_t* inst_path_wide;
hr = instance->GetInstallationPath(&inst_path_wide);
if (hr != S_OK) continue;
defer (SysFreeString(inst_path_wide));
String inst_path = mc_wstring_to_string(inst_path_wide);
defer (mc_free(inst_path));
String tools_filename = mc_concat(inst_path, str_lit("\\VC\\Auxiliary\\Build\\Microsoft.VCToolsVersion.default.txt"));
defer (mc_free(tools_filename));
gbFileContents tool_version = gb_file_read_contents(mc_allocator, true, (const char*)tools_filename.text);
defer (gb_file_free_contents(&tool_version));
String version_string = make_string((const u8*)tool_version.data, tool_version.size);
version_string = string_trim_whitespace(version_string);
String base_path = mc_concat(inst_path, str_lit("\\VC\\Tools\\MSVC\\"), version_string);
defer (mc_free(base_path));
String library_path = {};
if (build_context.metrics.arch == TargetArch_amd64) {
library_path = mc_concat(base_path, str_lit("\\lib\\x64\\"));
} else if (build_context.metrics.arch == TargetArch_i386) {
library_path = mc_concat(base_path, str_lit("\\lib\\x86\\"));
} else {
continue;
}
String library_file = mc_concat(library_path, str_lit("vcruntime.lib"));
if (gb_file_exists((const char*)library_file.text)) {
if (build_context.metrics.arch == TargetArch_amd64) {
result->vs_exe_path = mc_concat(base_path, str_lit("\\bin\\Hostx64\\x64\\"));
} else if (build_context.metrics.arch == TargetArch_i386) {
result->vs_exe_path = mc_concat(base_path, str_lit("\\bin\\Hostx86\\x86\\"));
} else {
continue;
}
result->vs_library_path = library_path;
return true;
}
/*
Ryan Saunderson said:
"Clang uses the 'SetupInstance->GetInstallationVersion' / ISetupHelper->ParseVersion to find the newest version
and then reads the tools file to define the tools path - which is definitely better than what i did."
So... @Incomplete: Should probably pick the newest version...
*/
}
}
// If we get here, we didn't find Visual Studio 2017. Try earlier versions.
{
HKEY vs7_key;
rc = RegOpenKeyExA(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\VisualStudio\\SxS\\VS7", 0, KEY_QUERY_VALUE | KEY_WOW64_32KEY, &vs7_key);
if (rc != S_OK) return false;
defer (RegCloseKey(vs7_key));
// Hardcoded search for 4 prior Visual Studio versions. Is there something better to do here?
char const *versions[] = { "14.0", "13.0", "12.0", "11.0", "10.0", "9.0", };
const int NUM_VERSIONS = sizeof(versions) / sizeof(versions[0]);
for (int i = 0; i < NUM_VERSIONS; i++) {
char const *v = versions[i];
DWORD dw_type;
DWORD required_length;
auto rc = RegQueryValueExA(vs7_key, v, NULL, &dw_type, NULL, &required_length);
if ((rc == ERROR_FILE_NOT_FOUND) || (dw_type != REG_SZ)) {
continue;
}
DWORD length = required_length + 2; // The +2 is for the maybe optional zero later on. Probably we are over-allocating.
char *c_str = gb_alloc_array(mc_allocator, char, length);
rc = RegQueryValueExA(vs7_key, v, NULL, NULL, (LPBYTE)c_str, &length);
if (rc != 0) continue;
if (c_str[required_length]) {
c_str[required_length+1] = 0;
}
String base_path = make_string_c(c_str);
String lib_path = {};
if (build_context.metrics.arch == TargetArch_amd64) {
lib_path = mc_concat(base_path, str_lit("VC\\Lib\\amd64\\"));
} else if (build_context.metrics.arch == TargetArch_i386) {
lib_path = mc_concat(base_path, str_lit("VC\\Lib\\"));
} else {
continue;
}
// Check to see whether a vcruntime.lib actually exists here.
String vcruntime_filename = mc_concat(lib_path, str_lit("vcruntime.lib"));
defer (mc_free(vcruntime_filename));
if (gb_file_exists((const char*)vcruntime_filename.text)) {
if (build_context.metrics.arch == TargetArch_amd64) {
result->vs_exe_path = mc_concat(base_path, str_lit("VC\\bin\\"));
} else if (build_context.metrics.arch == TargetArch_i386) {
result->vs_exe_path = mc_concat(base_path, str_lit("VC\\bin\\x86_amd64\\"));
} else {
continue;
}
result->vs_library_path = lib_path;
return true;
}
mc_free(lib_path);
}
// If we get here, we failed to find anything.
}
return false;
}
// NOTE(WalterPlinge): Environment variables can help to find Visual C++ and WinSDK paths for both
// official and portable installations (like mmozeiko's portable msvc script).
gb_internal void find_windows_kit_paths_from_env_vars(Find_Result *result) {
if (build_context.metrics.arch != TargetArch_amd64 && build_context.metrics.arch != TargetArch_i386) {
return;
}
// We can find windows sdk lib dir using the following combination of env vars:
// (WindowsSdkDir or UniversalCRTSdkDir) and (WindowsSDKVersion or WindowsSDKLibVersion)
bool sdk_lib_found = false;
// We can find windows sdk bin dir using the following combination of env vars:
// (WindowsSdkVerBinPath) or ((WindowsSdkBinPath or WindowsSdkDir or UniversalCRTSdkDir) and (WindowsSDKVersion || WindowsSDKLibVersion))
bool sdk_bin_found = false;
// These appear to be suitable env vars used by Visual Studio
String win_sdk_ver_env = mc_get_env(str_lit("WindowsSDKVersion"));
String win_sdk_lib_ver_env = mc_get_env(str_lit("WindowsSDKLibVersion"));
String win_sdk_dir_env = mc_get_env(str_lit("WindowsSdkDir"));
String crt_sdk_dir_env = mc_get_env(str_lit("UniversalCRTSdkDir"));
String win_sdk_bin_path_env = mc_get_env(str_lit("WindowsSdkBinPath"));
String win_sdk_ver_bin_path_env = mc_get_env(str_lit("WindowsSdkVerBinPath"));
defer ({
mc_free(win_sdk_ver_env);
mc_free(win_sdk_lib_ver_env);
mc_free(win_sdk_dir_env);
mc_free(crt_sdk_dir_env);
mc_free(win_sdk_bin_path_env);
mc_free(win_sdk_ver_bin_path_env);
});
if (win_sdk_ver_bin_path_env.len || ((win_sdk_bin_path_env.len || win_sdk_dir_env.len || crt_sdk_dir_env.len) && (win_sdk_ver_env.len || win_sdk_lib_ver_env.len))) {
String bin;
defer (mc_free(bin));
if (win_sdk_ver_bin_path_env.len) {
String dir = win_sdk_ver_bin_path_env;
// Add trailing '\' in case it was missing
bin = mc_concat(dir, dir[dir.len - 1] != '\\' ? str_lit("\\") : str_lit(""));
} else {
String dir = win_sdk_bin_path_env.len ? win_sdk_bin_path_env : win_sdk_dir_env.len ? win_sdk_dir_env : crt_sdk_dir_env;
String ver = win_sdk_ver_env.len ? win_sdk_ver_env : win_sdk_lib_ver_env;
// Add trailing '\' in case it was missing
dir = mc_concat(dir, dir[dir.len - 1] != '\\' ? str_lit("\\") : str_lit(""));
ver = mc_concat(ver, ver[ver.len - 1] != '\\' ? str_lit("\\") : str_lit(""));
defer (mc_free(dir));
defer (mc_free(ver));
// Append "bin" for win_sdk_dir_env and crt_sdk_dir_env
String dir_bin = mc_concat(dir, win_sdk_bin_path_env.len ? str_lit("") : str_lit("bin\\"));
defer (mc_free(dir_bin));
bin = mc_concat(dir_bin, ver);
}
if (build_context.metrics.arch == TargetArch_amd64) {
result->windows_sdk_bin_path = mc_concat(bin, str_lit("x64\\"));
sdk_bin_found = true;
} else if (build_context.metrics.arch == TargetArch_i386) {
result->windows_sdk_bin_path = mc_concat(bin, str_lit("x86\\"));
sdk_bin_found = true;
}
}
// NOTE(WalterPlinge): If any combination is found, let's just assume they are correct
if ((win_sdk_ver_env.len || win_sdk_lib_ver_env.len) && (win_sdk_dir_env.len || crt_sdk_dir_env.len)) {
String dir = win_sdk_dir_env.len ? win_sdk_dir_env : crt_sdk_dir_env;
String ver = win_sdk_ver_env.len ? win_sdk_ver_env : win_sdk_lib_ver_env;
// Add trailing '\' in case it was missing
dir = mc_concat(dir, dir[dir.len - 1] != '\\' ? str_lit("\\") : str_lit(""));
ver = mc_concat(ver, ver[ver.len - 1] != '\\' ? str_lit("\\") : str_lit(""));
defer (mc_free(dir));
defer (mc_free(ver));
if (build_context.metrics.arch == TargetArch_amd64) {
result->windows_sdk_um_library_path = mc_concat(dir, str_lit("Lib\\"), ver, str_lit("um\\x64\\"));
result->windows_sdk_ucrt_library_path = mc_concat(dir, str_lit("Lib\\"), ver, str_lit("ucrt\\x64\\"));
sdk_lib_found = true;
} else if (build_context.metrics.arch == TargetArch_i386) {
result->windows_sdk_um_library_path = mc_concat(dir, str_lit("Lib\\"), ver, str_lit("um\\x86\\"));
result->windows_sdk_ucrt_library_path = mc_concat(dir, str_lit("Lib\\"), ver, str_lit("ucrt\\x86\\"));
sdk_lib_found = true;
}
}
// If we haven't found it yet, we can loop through LIB for specific folders
//? This may not be robust enough using `um\x64` and `ucrt\x64`
if (!sdk_lib_found) {
String lib = mc_get_env(str_lit("LIB"));
defer (mc_free(lib));
if (lib.len) {
// NOTE(WalterPlinge): I don't know if there's a chance for the LIB variable
// to be set without a trailing '\' (apart from manually), so we can just
// check paths without it (see use of `String end` in the loop below)
String um_dir = build_context.metrics.arch == TargetArch_amd64
? str_lit("um\\x64")
: str_lit("um\\x86");
String ucrt_dir = build_context.metrics.arch == TargetArch_amd64
? str_lit("ucrt\\x64")
: str_lit("ucrt\\x86");
isize lo = {0};
isize hi = {0};
for (isize c = 0; c <= lib.len; c += 1) {
if (c != lib.len && lib[c] != ';') {
continue;
}
hi = c;
defer (lo = hi + 1);
// Skip when there are two ;; in a row
if (lo == hi) {
continue;
}
String dir = substring(lib, lo, hi);
// Remove the last slash so we can match with the strings above
String end = dir[dir.len - 1] == '\\'
? substring(dir, 0, dir.len - 1)
: substring(dir, 0, dir.len);
if (string_ends_with(end, um_dir)) {
result->windows_sdk_um_library_path = mc_concat(end, str_lit("\\"));
} else if (string_ends_with(end, ucrt_dir)) {
result->windows_sdk_ucrt_library_path = mc_concat(end, str_lit("\\"));
}
if (result->windows_sdk_um_library_path.len && result->windows_sdk_ucrt_library_path.len) {
sdk_lib_found = true;
break;
}
}
}
}
// NOTE(WalterPlinge): So far this function assumes it will only be called if MSVC was
// installed using mmozeiko's portable msvc script, which uses the windows 10 sdk.
// This may need to be changed later if it ends up causing problems.
if (sdk_bin_found && sdk_lib_found) {
result->windows_sdk_version = 10;
}
}
// NOTE(WalterPlinge): Environment variables can help to find Visual C++ and WinSDK paths for both
// official and portable installations (like mmozeiko's portable msvc script). This will only use
// the first paths it finds, and won't overwrite any values that `result` already has.
gb_internal void find_visual_studio_paths_from_env_vars(Find_Result *result) {
if (build_context.metrics.arch != TargetArch_amd64 && build_context.metrics.arch != TargetArch_i386) {
return;
}
bool vs_found = false;
// We can find visual studio using VCToolsInstallDir
String vctid = mc_get_env(str_lit("VCToolsInstallDir"));
defer (mc_free(vctid));
if (vctid.len) {
String exe = build_context.metrics.arch == TargetArch_amd64
? str_lit("bin\\Hostx64\\x64\\")
: str_lit("bin\\Hostx86\\x86\\");
String lib = build_context.metrics.arch == TargetArch_amd64
? str_lit("lib\\x64\\")
: str_lit("lib\\x86\\");
if (string_ends_with(vctid, str_lit("\\"))) {
result->vs_exe_path = mc_concat(vctid, exe);
result->vs_library_path = mc_concat(vctid, lib);
} else {
result->vs_exe_path = mc_concat(vctid, str_lit("\\"), exe);
result->vs_library_path = mc_concat(vctid, str_lit("\\"), lib);
}
vs_found = true;
}
// If we haven't found it yet, we can loop through Path for specific folders
if (!vs_found) {
String path = mc_get_env(str_lit("Path"));
defer (mc_free(path));
if (path.len) {
String exe = build_context.metrics.arch == TargetArch_amd64
? str_lit("bin\\Hostx64\\x64")
: str_lit("bin\\Hostx86\\x86");
// The environment variable may have an uppercase X even though the folder is lowercase
String exe2 = build_context.metrics.arch == TargetArch_amd64
? str_lit("bin\\HostX64\\x64")
: str_lit("bin\\HostX86\\x86");
String lib = build_context.metrics.arch == TargetArch_amd64
? str_lit("lib\\x64")
: str_lit("lib\\x86");
isize lo = {0};
isize hi = {0};
for (isize c = 0; c <= path.len; c += 1) {
if (c != path.len && path[c] != ';') {
continue;
}
hi = c;
defer (lo = hi + 1);
// Skip when there are two ;; in a row
if (lo == hi) {
continue;
}
String dir = substring(path, lo, hi);
// Remove the last slash so we can match with the strings above
String end = dir[dir.len - 1] == '\\'
? substring(dir, 0, dir.len - 1)
: substring(dir, 0, dir.len);
// check if cl.exe and link.exe exist in this folder
String cl = mc_concat(end, str_lit("\\cl.exe"));
String link = mc_concat(end, str_lit("\\link.exe"));
defer (mc_free(cl));
defer (mc_free(link));
if (!string_ends_with(end, exe) && !string_ends_with(end, exe2)) {
continue;
}
if (!gb_file_exists((char *)cl.text) || !gb_file_exists((char *)link.text)) {
continue;
}
String root = substring(end, 0, end.len - exe.len);
result->vs_exe_path = mc_concat(end, str_lit("\\"));
result->vs_library_path = mc_concat(root, lib, str_lit("\\"));
vs_found = true;
break;
}
}
}
}
gb_internal Find_Result find_visual_studio_and_windows_sdk() {
Find_Result r = {};
find_windows_kit_paths(&r);
find_visual_studio_by_fighting_through_microsoft_craziness(&r);
bool sdk_found =
r.windows_sdk_bin_path.len &&
r.windows_sdk_um_library_path.len &&
r.windows_sdk_ucrt_library_path.len ;
bool vs_found =
r.vs_exe_path.len &&
r.vs_library_path.len ;
if (!sdk_found) {
find_windows_kit_paths_from_env_vars(&r);
}
if (!vs_found) {
find_visual_studio_paths_from_env_vars(&r);
}
#if 0
printf("windows_sdk_bin_path: %.*s\n", LIT(r.windows_sdk_bin_path));
printf("windows_sdk_um_library_path: %.*s\n", LIT(r.windows_sdk_um_library_path));
printf("windows_sdk_ucrt_library_path: %.*s\n", LIT(r.windows_sdk_ucrt_library_path));
printf("vs_exe_path: %.*s\n", LIT(r.vs_exe_path));
printf("vs_library_path: %.*s\n", LIT(r.vs_library_path));
gb_exit(1);
#endif
return r;
}