Add wslc shell script for WSL interop

msipackage/CMakeLists.txt

@@ -27,6 +27,9 @@ foreach(binary ${WINDOWS_BINARIES})
     list(APPEND BINARIES_DEPENDENCIES "${PACKAGE_INPUT_DIR}/${binary}")
 endforeach()
 
+# Shell script for WSL interop (allows running 'wslc' without the .exe extension inside WSL)
+list(APPEND BINARIES_DEPENDENCIES "${CMAKE_SOURCE_DIR}/src/windows/wslc/wslc")
+
 set(LINUX_BINARIES init;initrd.img)
 foreach(binary ${LINUX_BINARIES})
     list(APPEND BINARIES_DEPENDENCIES "${BIN}/${binary}")

msipackage/package.wix.in

@@ -28,6 +28,7 @@
 
                 <File Id="wslg.exe" Name="wslg.exe" Source="${PACKAGE_INPUT_DIR}/wslg.exe" />
                 <File Id="wslc.exe" Name="wslc.exe" Source="${PACKAGE_INPUT_DIR}/wslc.exe" />
+                <File Id="wslc" Name="wslc" Source="${CMAKE_SOURCE_DIR}/src/windows/wslc/wslc" />
                 <File Id="wslhost.exe" Name="wslhost.exe" Source="${PACKAGE_INPUT_DIR}/wslhost.exe" />
                 <File Id="wslrelay.exe" Name="wslrelay.exe" Source="${PACKAGE_INPUT_DIR}/wslrelay.exe" />
                 <File Id="wslserviceproxystub.dll" Name="wslserviceproxystub.dll" Source="${PACKAGE_INPUT_DIR}/wslserviceproxystub.dll" />

src/windows/wslc/.gitattributes

@@ -0,0 +1,2 @@
+# Shell scripts must keep Unix (LF) line endings to work in WSL
+wslc text eol=lf

src/windows/wslc/wslc

@@ -0,0 +1,11 @@
+#!/usr/bin/env sh
+#
+# Copyright (c) Microsoft. All rights reserved.
+#
+# Shell script to allow running wslc from within a WSL distribution
+# without needing the .exe extension (e.g. 'wslc' instead of 'wslc.exe').
+
+WSL_PATH="$(dirname "$(realpath "$0")")"
+WSLC_EXE="$WSL_PATH/wslc.exe"
+
+exec "$WSLC_EXE" "$@"

test/windows/SimpleTests.cpp

@@ -294,5 +294,19 @@ class SimpleTests
         VERIFY_IS_TRUE(output.find(L"/mnt/c/Program Files (x86)/Common Files") != std::wstring::npos);
         VERIFY_IS_TRUE(output.find(L"/mnt/c/Users/Test User/AppData/Local/Programs/Microsoft VS Code/bin") != std::wstring::npos);
     }
+
+    WSLC_TEST_METHOD(WslcShellScript)
+    {
+        // Verify that the 'wslc' shell script (no .exe extension) invokes wslc.exe
+        // and produces the same output as calling wslc.exe directly.
+        // Use the full install path since the MSI directory may not be on %PATH% in CI.
+        auto installPath = wsl::windows::common::wslutil::GetMsiPackagePath().value();
+        auto exeCmd = std::format(L"$(wslpath '{}wslc.exe') version", installPath);
+        auto scriptCmd = std::format(L"$(wslpath '{}wslc') version", installPath);
+        auto [exeOutput, exeErr] = LxsstuLaunchWslAndCaptureOutput(exeCmd);
+        auto [scriptOutput, scriptErr] = LxsstuLaunchWslAndCaptureOutput(scriptCmd);
+        VERIFY_ARE_EQUAL(exeOutput, scriptOutput);
+        VERIFY_ARE_EQUAL(exeErr, scriptErr);
+    }
 };
 } // namespace SimpleTests