Add MVS' find toolchain

Signed-off-by: Anatoly Myachev <[email protected]>

python/setup.py

@@ -103,6 +103,49 @@ def copy_externals():
         ]
 
 
+def find_vswhere():
+    program_files = os.environ.get("ProgramFiles(x86)", "C:\\Program Files (x86)")
+    vswhere_path = Path(program_files) / "Microsoft Visual Studio" / "Installer" / "vswhere.exe"
+    if vswhere_path.exists():
+        return vswhere_path
+    return None
+
+
+def find_visual_studio(version_ranges):
+    vswhere = find_vswhere()
+    if not vswhere:
+        raise FileNotFoundError("vswhere.exe not found.")
+
+    for version_range in version_ranges:
+        command = [
+            str(vswhere), "-version", version_range, "-requires", "Microsoft.VisualStudio.Component.VC.Tools.x86.x64",
+            "-property", "installationPath", "-prerelease"
+        ]
+
+        try:
+            output = subprocess.check_output(command, text=True).strip()
+            if output:
+                return output
+        except subprocess.CalledProcessError:
+            continue
+
+    return None
+
+
+def set_env_vars(vs_path, arch="x64"):
+    vcvarsall_path = Path(vs_path) / "VC" / "Auxiliary" / "Build" / "vcvarsall.bat"
+    if not vcvarsall_path.exists():
+        raise FileNotFoundError(f"vcvarsall.bat not found in expected path: {vcvarsall_path}")
+
+    command = ["call", vcvarsall_path, arch, "&&", "set"]
+    output = subprocess.check_output(command, shell=True, text=True)
+
+    for line in output.splitlines():
+        if '=' in line:
+            var, value = line.split('=', 1)
+            os.environ[var] = value
+
+
 # Taken from https://github.com/pytorch/pytorch/blob/master/tools/setup_helpers/env.py
 def check_env_flag(name: str, default: str = "") -> bool:
     return os.getenv(name, default).upper() in ["ON", "1", "YES", "TRUE", "Y"]

python/triton/runtime/CLFinder.py

@@ -0,0 +1,55 @@
+import os
+import subprocess
+from pathlib import Path
+
+
+def find_vswhere():
+    program_files = os.environ.get("ProgramFiles(x86)", "C:\\Program Files (x86)")
+    vswhere_path = Path(program_files) / "Microsoft Visual Studio" / "Installer" / "vswhere.exe"
+    if vswhere_path.exists():
+        return vswhere_path
+    return None
+
+
+def find_visual_studio(version_ranges):
+    vswhere = find_vswhere()
+    if not vswhere:
+        raise FileNotFoundError("vswhere.exe not found.")
+
+    for version_range in version_ranges:
+        command = [
+            str(vswhere), "-version", version_range, "-requires", "Microsoft.VisualStudio.Component.VC.Tools.x86.x64",
+            "-property", "installationPath", "-prerelease"
+        ]
+
+        try:
+            output = subprocess.check_output(command, text=True).strip()
+            if output:
+                return output
+        except subprocess.CalledProcessError:
+            continue
+
+    return None
+
+
+def set_env_vars(vs_path, arch="x64"):
+    vcvarsall_path = Path(vs_path) / "VC" / "Auxiliary" / "Build" / "vcvarsall.bat"
+    if not vcvarsall_path.exists():
+        raise FileNotFoundError(f"vcvarsall.bat not found in expected path: {vcvarsall_path}")
+
+    command = f'call "{vcvarsall_path}" {arch} && set'
+    output = subprocess.check_output(command, shell=True, text=True)
+
+    for line in output.splitlines():
+        if '=' in line:
+            var, value = line.split('=', 1)
+            os.environ[var] = value
+
+
+def initialize_visual_studio_env(version_ranges, arch="x64"):
+    # Check if the environment variable that vcvarsall.bat sets is present
+    if os.environ.get('VSCMD_ARG_TGT_ARCH') != arch:
+        vs_path = find_visual_studio(version_ranges)
+        if not vs_path:
+            raise EnvironmentError("Visual Studio not found in specified version ranges.")
+        set_env_vars(vs_path, arch)