[llvm] docs: Add documentation for LLVM_ENABLE_LIBEDIT CMake flag (PR #147112)

[Murat Toprak via llvm-commits]

https://github.com/toprakmurat created https://github.com/llvm/llvm-project/pull/147112

This adds missing documentation for the LLVM_ENABLE_LIBEDIT flag to the
CMake documentation page, addressing the issue that this flag was
undocumented despite being used in the build system.

The documentation explains:
- Purpose: Controls libedit support for command-line editing
- Supported values: ON, OFF, or auto-detection
- Default behavior: Auto-detection when not specified

Fixes: #146477

>From bb6273d001b09073da5491198c9f86ad259bebf7 Mon Sep 17 00:00:00 2001
From: Murat Toprak <murattoprak2004 at gmail.com>
Date: Sat, 5 Jul 2025 00:25:26 +0300
Subject: [PATCH] docs: Add documentation for LLVM_ENABLE_LIBEDIT CMake flag

---
 llvm/docs/CMake.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/llvm/docs/CMake.rst b/llvm/docs/CMake.rst
index 2f03421c92230..17be41b20a12a 100644
--- a/llvm/docs/CMake.rst
+++ b/llvm/docs/CMake.rst
@@ -540,6 +540,13 @@ enabled sub-projects. Nearly all of these variable names begin with
   passed to invocations of both so that the project is built using libc++
   instead of stdlibc++. Defaults to OFF.
 
+**LLVM_ENABLE_LIBEDIT**:BOOL
+  Controls whether to enable libedit support for command-line editing and history
+  in LLVM tools. When ``ON``, forces libedit support to be enabled and will cause a
+  CMake configuration error if libedit cannot be found. When ``OFF``, disables
+  libedit support entirely. If not specified, LLVM will auto-detect libedit
+  availability. Defaults to auto-detection.
+
 **LLVM_ENABLE_LIBPFM**:BOOL
   Enable building with libpfm to support hardware counter measurements in LLVM
   tools.