From 401fc257e88ff2178b9f129f476e50836095ea98 Mon Sep 17 00:00:00 2001
From: Roland Conybeare <rconybeare@gmail.com>
Date: Wed, 27 Sep 2023 18:21:27 -0400
Subject: [PATCH] xo-cmake: consolidate CMAKE_EXPORT_COMPILE_COMMANDS

---
 cmake/xo_cxx.cmake | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/cmake/xo_cxx.cmake b/cmake/xo_cxx.cmake
index b02ad99a..53cccb58 100644
--- a/cmake/xo_cxx.cmake
+++ b/cmake/xo_cxx.cmake
@@ -34,6 +34,13 @@ macro(xo_toplevel_compile_options)
         set(XO_COMPILE_OPTIONS ${XO_STANDARD_COMPILE_OPTIONS})
     endif()
 
+    # writes ${PROJECT_BINARY_DIR}/compile_commands.json;
+    # (symlink from toplevel git dir to tell LSP how to build)
+    #
+    if(NOT DEFINED CMAKE_EXPORT_COMPILE_COMMANDS)
+        set(CMAKE_EXPORT_COMPILE_COMMANDS ON CACHE INTERNAL "")
+    endif()
+
     if(NOT CMAKE_INSTALL_RPATH)
         set(CMAKE_INSTALL_RPATH ${CMAKE_INSTALL_PREFIX}/lib CACHE STRING
             "runpath in installed libraries/executables")