[clang] f875a73 - [llvm-lit] Add Windows .cmd wrapper to make llvm-lit directly runnable (#155226)

[via cfe-commits]

Author: Omair Javaid
Date: 2025-08-29T13:54:21+05:00
New Revision: f875a73af958bd1ed6c39849c7ae90371cd25ccb

URL: https://github.com/llvm/llvm-project/commit/f875a73af958bd1ed6c39849c7ae90371cd25ccb
DIFF: https://github.com/llvm/llvm-project/commit/f875a73af958bd1ed6c39849c7ae90371cd25ccb.diff

LOG: [llvm-lit] Add Windows .cmd wrapper to make llvm-lit directly runnable (#155226)

On Linux/Mac, `llvm-lit` is configured with a shebang and made
executable so tools like LNT and the test-suite can invoke it directly.
On Windows the build only produces `llvm-lit.py` which cannot be used as
a standalone executable. This caused problems when running the LLVM
test-suite via LNT or buildbots.

This change introduces a new template file `llvm-lit.cmd.in` and updates
`llvm/utils/llvm-lit/CMakeLists.txt` so that a corresponding
`llvm-lit.cmd` is generated in the `build/bin` directory (for both
single-config and multi-config generators). The wrapper simply invokes
the configured Python interpreter on the adjacent `llvm-lit.py` and
propagates the exit code.

This ensures that `llvm-lit` can be used as a direct executable on
Windows just like on Linux without requiring external wrappers or
modifications in buildbot scripts or LNT.

Added: 
    llvm/utils/llvm-lit/llvm-lit.cmd.in

Modified: 
    clang/test/utils/update_cc_test_checks/lit.local.cfg
    llvm/utils/llvm-lit/CMakeLists.txt

Removed: 
    


################################################################################
diff  --git a/clang/test/utils/update_cc_test_checks/lit.local.cfg b/clang/test/utils/update_cc_test_checks/lit.local.cfg
index f2810fa18c8fc..d7cc78d8f67fe 100644
--- a/clang/test/utils/update_cc_test_checks/lit.local.cfg
+++ b/clang/test/utils/update_cc_test_checks/lit.local.cfg
@@ -39,7 +39,7 @@ else:
         lit = config.llvm_external_lit
     else:
         lit = shell_quote(
-            glob.glob(os.path.join(config.llvm_tools_dir, "llvm-lit*"))[0]
+            os.path.join(config.llvm_tools_dir, "llvm-lit.py" if os.name == "nt" else "llvm-lit")
         )
     python = shell_quote(config.python_executable)
     config.substitutions.append(

diff  --git a/llvm/utils/llvm-lit/CMakeLists.txt b/llvm/utils/llvm-lit/CMakeLists.txt
index 895fa25f189de..8ee8e98541ce4 100644
--- a/llvm/utils/llvm-lit/CMakeLists.txt
+++ b/llvm/utils/llvm-lit/CMakeLists.txt
@@ -35,6 +35,14 @@ if(NOT "${CMAKE_CFG_INTDIR}" STREQUAL ".")
       llvm-lit.in
       ${bi}
       )
+    if (WIN32)
+      string(REPLACE ${CMAKE_CFG_INTDIR} ${BUILD_MODE} bi_dir ${LIT_BASE_DIR})
+      configure_file(
+        llvm-lit.cmd.in
+        ${bi_dir}/llvm-lit.cmd
+        @ONLY
+        NEWLINE_STYLE DOS)
+    endif()
   endforeach()
 else()
   set(BUILD_MODE .)
@@ -42,4 +50,11 @@ else()
     llvm-lit.in
     ${LIT_BASE_DIR}/${LIT_FILE_NAME}
     )
+  if (WIN32)
+    configure_file(
+      llvm-lit.cmd.in
+      ${LIT_BASE_DIR}/llvm-lit.cmd
+      @ONLY
+      NEWLINE_STYLE DOS)
+  endif()  
 endif()

diff  --git a/llvm/utils/llvm-lit/llvm-lit.cmd.in b/llvm/utils/llvm-lit/llvm-lit.cmd.in
new file mode 100644
index 0000000000000..a18d5316cc8d6
--- /dev/null
+++ b/llvm/utils/llvm-lit/llvm-lit.cmd.in
@@ -0,0 +1,3 @@
+ at echo off
+"@Python3_EXECUTABLE@" "%~dp0 at LIT_FILE_NAME@" %*
+exit /b %errorlevel%