diff --git a/lua-macros.changes b/lua-macros.changes
index e3d8c33..7283f75 100644
--- a/lua-macros.changes
+++ b/lua-macros.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Oct  9 22:44:04 UTC 2025 - Matej Cepl <mcepl@cepl.eu>
+
+- Make definition of variables dynamic based on pkgconf output.
+
 -------------------------------------------------------------------
 Tue Aug  5 14:05:41 UTC 2025 - Matej Cepl <mcepl@cepl.eu>
 
diff --git a/lua-macros.spec b/lua-macros.spec
index 447d93b..ad90da4 100644
--- a/lua-macros.spec
+++ b/lua-macros.spec
@@ -33,6 +33,7 @@ Requires:       lua-interpreter
 # on SLE 12 lua is lua5.2 unconditionally, avoid
 Requires:       lua
 %endif
+Requires:       pkgconfig
 BuildArch:      noarch
 
 %description
diff --git a/macros.lua b/macros.lua
index 4720675..5c23f1f 100644
--- a/macros.lua
+++ b/macros.lua
@@ -5,13 +5,13 @@
 %lua_version_nodots %(lua -e 'print((string.gsub("%{lua_version}", "%.", "")))')
 
 # compiled modules should go here
-%lua_archdir %{_libdir}/lua/%{lua_version}
+%lua_archdir %(pkgconf --variable=INSTALL_CMOD lua)
 
 # pure Lua modules should go here
-%lua_noarchdir %{_datadir}/lua/%{lua_version}
+%lua_noarchdir %(pkgconf --variable=INSTALL_LMOD lua)
 
 # lua includes folder
-%lua_incdir %{_includedir}/lua%{lua_version}
+%lua_incdir %(pkgconf --variable=includedir lua)
 
 %lua_version_default %{lua:
 local result = 5.4