From ffe968214c27689a182559b150f008d1d40c411d Mon Sep 17 00:00:00 2001
From: Christian Beier <dontmind@freeshell.org>
Date: Sat, 25 Apr 2020 12:56:18 +0200
Subject: [PATCH] CMake: make sure compile_commands.json is readable by ccls

---
 CMakeLists.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ce7553a..7376386 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,6 +4,15 @@ project(gromit-mpx LANGUAGES C)
 set(target_name gromit-mpx)
 set(version 1.3)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+if(CMAKE_GENERATOR MATCHES "Unix Makefiles|Ninja")
+# some LSP servers expect compile_commands.json in the project root
+add_custom_target(
+    copy-compile-commands ALL
+    ${CMAKE_COMMAND} -E copy_if_different
+        ${CMAKE_BINARY_DIR}/compile_commands.json
+        ${CMAKE_CURRENT_SOURCE_DIR}
+    )
+endif(CMAKE_GENERATOR MATCHES "Unix Makefiles|Ninja")
 
 set(CMAKE_C_FLAGS  " ${CMAKE_C_FLAGS} -Wall -Wextra -Wno-unused-parameter")