From 677685cd374997834e12fbd54de9e24272fb6d8c Mon Sep 17 00:00:00 2001
From: Thomas Devoogdt <thomas@devoogdt.com>
Date: Fri, 28 Apr 2023 10:25:16 +0200
Subject: [PATCH] build: use the system provided LuaJIT if found

e.g. buildroot has logic to build luajit,
so if pkg_check_modules can find a suitable version,
then use that one.

Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
---
 CMakeLists.txt     | 9 ++++++++-
 src/CMakeLists.txt | 2 +-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b3e7a2585d7..6f55e8c1313 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1051,7 +1051,14 @@ endif()
 # LuaJIT (Scripting Support)
 # ==========================
 if(FLB_LUAJIT)
-  include(cmake/luajit.cmake)
+  find_package(PkgConfig)
+  pkg_check_modules(LUAJIT luajit>=2.1.0)
+  if(LUAJIT_FOUND)
+    include_directories(${LUAJIT_INCLUDE_DIRS})
+  else()
+    include(cmake/luajit.cmake)
+    set(LUAJIT_LIBRARIES "libluajit")
+  endif()
   FLB_DEFINITION(FLB_HAVE_LUAJIT)
 endif()
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 4f64613ecf0..ba876780c94 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -223,7 +223,7 @@ endif()
 if(FLB_LUAJIT)
   set(extra_libs
     ${extra_libs}
-    "libluajit")
+    ${LUAJIT_LIBRARIES})
 endif()
 
 if(FLB_SQLDB)