From 12e7b9e5ee00041d0695863f5d4c639a2fe8f760 Mon Sep 17 00:00:00 2001
From: Vasek Sraier <git@vakabus.cz>
Date: Mon, 27 Jan 2020 14:42:15 +0100
Subject: [PATCH] sysrepo-lua: fixed absolute path shared object loading from
 within Lua

---
 modules/sysrepo-lua/{ffi.lua => ffi.lua.in} |  7 +++----
 modules/sysrepo-lua/meson.build             | 17 +++++++++++++----
 2 files changed, 16 insertions(+), 8 deletions(-)
 rename modules/sysrepo-lua/{ffi.lua => ffi.lua.in} (97%)

diff --git a/modules/sysrepo-lua/ffi.lua b/modules/sysrepo-lua/ffi.lua.in
similarity index 97%
rename from modules/sysrepo-lua/ffi.lua
rename to modules/sysrepo-lua/ffi.lua.in
index 355dcb149..6fcfc16dc 100644
--- a/modules/sysrepo-lua/ffi.lua
+++ b/modules/sysrepo-lua/ffi.lua.in
@@ -1,8 +1,7 @@
 local ffi = require("ffi")
 
--- FIXME remove absolute path
--- the load opens the file relative to CWD. That could be anywhere. So we need to know, where is knot installed.
-local clib = ffi.load("/tmp/kr/lib/knot-resolver/kres_modules/sysrepo-lua/cbindings.so")
+-- The exact path is configured during project build by meson
+local clib = ffi.load("@modules_dir@/sysrepo-lua/cbindings.so")
 
 -------------------------------------------------------------------------------
 --                      FFI initialization
@@ -110,7 +109,7 @@ else
     _KNOT_SYSREPO_FFI_INITIALIZED = true
 end
 
--- TODO version check so that we cant load new module into an old Knot
+-- TODO version check so that we can not load new module into an old Knot
 
 -------------------------------------------------------------------------------
 --                      Data convertsion helpers
diff --git a/modules/sysrepo-lua/meson.build b/modules/sysrepo-lua/meson.build
index e8ad92316..9391753db 100644
--- a/modules/sysrepo-lua/meson.build
+++ b/modules/sysrepo-lua/meson.build
@@ -1,9 +1,18 @@
 # lua module: sysrepo-lua
 
-sysrepo_lua_src = files([
-  'ffi.lua',
-  'init.lua',
-])
+lua_config = configuration_data()
+lua_config.set('modules_dir', modules_dir)
+
+ffi = configure_file(
+  input: 'ffi.lua.in',
+  output: 'ffi.lua',
+  configuration: lua_config,
+)
+
+sysrepo_lua_src = [
+  ffi,
+  files('init.lua'),
+]
 
 sysrepo_src = files([
   'cbindings/sysrepo_clib.h',
-- 
2.47.2