Here the last lines from the huge log:
/usr/bin/ld: lua/.libs/liblua_plugin_la-extension.o: in function `GetLuaState.part.0':
extension.c:(.text+0x55e): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-dialog.o: in function `vlclua_create_widget_inner':
dialog.c:(.text+0xc0d): undefined reference to `lua_newuserdata'
/usr/bin/ld: dialog.c:(.text+0xdcd): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-dialog.o: in function `vlclua_dialog_create':
dialog.c:(.text+0x1510): undefined reference to `lua_newuserdata'
/usr/bin/ld: dialog.c:(.text+0x15cd): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-net.o: in function `vlclua_net_listen_tcp':
net.c:(.text+0xd42): undefined reference to `lua_newuserdata'
/usr/bin/ld: net.c:(.text+0xd9c): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-net.o: in function `vlclua_fd_init':
net.c:(.text+0x1b32): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/.libs/liblua_plugin_la-intf.o: in function `Start_LuaIntf':
intf.c:(.text+0x239): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/.libs/liblua_plugin_la-meta.o: in function `init':
meta.c:(.text+0x6f): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/.libs/liblua_plugin_la-stream_filter.o: in function `ReadDir':
stream_filter.c:(.text+0x11e): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/.libs/liblua_plugin_la-stream_filter.o:stream_filter.c:(.text+0x384): more undefined references to `luaL_openlib' follow
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-httpd.o: in function `vlclua_httpd_redirect_new':
httpd.c:(.text+0x90): undefined reference to `lua_newuserdata'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-httpd.o: in function `vlclua_httpd_tls_host_new':
httpd.c:(.text+0x6ba): undefined reference to `lua_newuserdata'
/usr/bin/ld: httpd.c:(.text+0x795): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-httpd.o: in function `vlclua_httpd_handler_new':
httpd.c:(.text+0x94e): undefined reference to `lua_newuserdata'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-httpd.o: in function `vlclua_httpd_file_new':
httpd.c:(.text+0xb70): undefined reference to `lua_newuserdata'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-input.o: in function `luaopen_input':
input.c:(.text+0x1c9e): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-input.o: in function `vlclua_input_item_get':
input.c:(.text+0x1cdf): undefined reference to `lua_newuserdata'
/usr/bin/ld: input.c:(.text+0x1d35): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-messages.o: in function `luaopen_msg':
messages.c:(.text+0x9fe): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-misc.o: in function `luaopen_misc':
misc.c:(.text+0x42e): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-objects.o: in function `vlclua_push_vlc_object.isra.0':
objects.c:(.text+0x104): undefined reference to `lua_newuserdata'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-objects.o: in function `luaopen_object':
objects.c:(.text+0x26e): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-osd.o: in function `luaopen_osd':
osd.c:(.text+0x3ce): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-playlist.o: in function `luaopen_playlist':
playlist.c:(.text+0x124e): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-sd.o: in function `vlclua_sd_create_item':
sd.c:(.text+0x327): undefined reference to `lua_newuserdata'
/usr/bin/ld: sd.c:(.text+0x43d): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-sd.o: in function `vlclua_sd_create_node':
sd.c:(.text+0x182e): undefined reference to `lua_newuserdata'
/usr/bin/ld: sd.c:(.text+0x18dd): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-sd.o: in function `luaopen_sd_sd':
sd.c:(.text+0x1bce): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-stream.o: in function `vlclua_stream_new_inner':
stream.c:(.text+0x1c): undefined reference to `lua_newuserdata'
/usr/bin/ld: stream.c:(.text+0x75): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-strings.o: in function `vlclua_convert_xml_special_chars':
strings.c:(.text+0x2dc): undefined reference to `lua_remove'
/usr/bin/ld: strings.c:(.text+0x348): undefined reference to `lua_remove'
/usr/bin/ld: strings.c:(.text+0x38a): undefined reference to `lua_remove'
/usr/bin/ld: strings.c:(.text+0x3cc): undefined reference to `lua_remove'
/usr/bin/ld: strings.c:(.text+0x417): undefined reference to `lua_remove'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-strings.o:strings.c:(.text+0x456): more undefined references to `lua_remove' follow
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-strings.o: in function `luaopen_strings':
strings.c:(.text+0xc9e): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-variables.o: in function `luaopen_variables':
variables.c:(.text+0xd6e): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-video.o: in function `luaopen_video':
video.c:(.text+0x9e): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-vlm.o: in function `vlclua_vlm_new':
vlm.c:(.text+0x212): undefined reference to `lua_newuserdata'
/usr/bin/ld: vlm.c:(.text+0x26d): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-volume.o: in function `luaopen_volume':
volume.c:(.text+0x25e): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-xml.o: in function `vlclua_xml_create':
xml.c:(.text+0x8): undefined reference to `lua_newuserdata'
/usr/bin/ld: xml.c:(.text+0x55): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-xml.o: in function `vlclua_xml_create_reader':
xml.c:(.text+0xb7): undefined reference to `lua_newuserdata'
/usr/bin/ld: xml.c:(.text+0x10d): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-io.o: in function `vlclua_io_open':
io.c:(.text+0x10b): undefined reference to `lua_newuserdata'
/usr/bin/ld: io.c:(.text+0x17d): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-io.o: in function `luaopen_vlcio':
io.c:(.text+0xaee): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-rand.o: in function `luaopen_rand':
rand.c:(.text+0xde): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-renderers.o: in function `vlclua_rd_create':
renderers.c:(.text+0x17): undefined reference to `lua_newuserdata'
/usr/bin/ld: renderers.c:(.text+0xfd): undefined reference to `luaL_openlib'
/usr/bin/ld: lua/libs/.libs/liblua_plugin_la-renderers.o: in function `luaopen_rd':
renderers.c:(.text+0x76e): undefined reference to `luaL_openlib'
collect2: error: ld returned 1 exit status
make[4]: *** [Makefile:17191: liblua_plugin.la] Error 1
make[4]: *** Waiting for unfinished jobs....
make[4]: Leaving directory '/var/tmp/pamac-build-io/vlc-git/src/vlc/modules'
make[3]: *** [Makefile:32084: all-recursive] Error 1
make[3]: Leaving directory '/var/tmp/pamac-build-io/vlc-git/src/vlc/modules'
make[2]: *** [Makefile:13486: all] Error 2
make[2]: Leaving directory '/var/tmp/pamac-build-io/vlc-git/src/vlc/modules'
make[1]: *** [Makefile:1578: all-recursive] Error 1
make[1]: Leaving directory '/var/tmp/pamac-build-io/vlc-git/src/vlc'
make: *** [Makefile:1463: all] Error 2
==> ERROR: A failure occurred in build().
Aborting...