How to build lua 5.3 with library "lfs"?

Question

In my project, I build Lua5.1 with library "lfs"(https://github.com/keplerproject/luafilesystem) by adding lfs.c and lfs.h in Makefile of Lua, it works well.

But after upgrading to lua5.3, it fails like this:

$ lua test.lua
lua: test.lua:1: module 'lfs' not found:
no field package.preload['lfs']
no file '/usr/local/share/lua/5.3/lfs.lua'
no file '/usr/local/share/lua/5.3/lfs/init.lua'
no file '/usr/local/lib/lua/5.3/lfs.lua'
no file '/usr/local/lib/lua/5.3/lfs/init.lua'
no file './lfs.lua'
no file './lfs/init.lua'
no file '/usr/local/lib/lua/5.3/lfs.so'
no file '/usr/local/lib/lua/5.3/loadall.so'
no file './lfs.so'
stack traceback:
    [C]: in function 'require'
    test.lua:1: in main chunk
    [C]: in ? 

test.lua:

local lfs = require"lfs"
function attrdir (path)
    for file in lfs.dir(path) do
        if file ~= "." and file ~= ".." then
            local f = path..'/'..file
            print ("\t "..f)
            local attr = lfs.attributes (f)
            assert (type(attr) == "table")
            if attr.mode == "directory" then
                attrdir (f)
            else
                for name, value in pairs(attr) do
                    print (name, value)
                end
            end
        end
    end
end

attrdir(".")

I've checked that the latest "lfs" library is Lua5.3 supported.

My OS is macos 10.12, and here is the makefile i'm using

# Makefile for building Lua
# See ../doc/readme.html for installation and customization instructions.

# == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT =======================

# Your platform. See PLATS for possible values.
PLAT= none

CC= gcc -std=gnu99
CFLAGS= -O2 -Wall -Wextra -DLUA_COMPAT_5_2 $(SYSCFLAGS) $(MYCFLAGS)
LDFLAGS= $(SYSLDFLAGS) $(MYLDFLAGS)
LIBS= -lm $(SYSLIBS) $(MYLIBS)

AR= ar rcu
RANLIB= ranlib
RM= rm -f

SYSCFLAGS=
SYSLDFLAGS=
SYSLIBS=

MYCFLAGS=
MYLDFLAGS=
MYLIBS=
MYOBJS=

# == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE =======

PLATS= aix bsd c89 freebsd generic linux macosx mingw posix solaris

LUA_A=  liblua.a
CORE_O= lapi.o lcode.o lctype.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o \
    lmem.o lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o \
    ltm.o lundump.o lvm.o lzio.o
LIB_O= lfs.o crc32.o lauxlib.o lbaselib.o lbitlib.o lcorolib.o ldblib.o liolib.o \
    lmathlib.o loslib.o lstrlib.o ltablib.o lutf8lib.o loadlib.o linit.o 

BASE_O= $(CORE_O) $(LIB_O) $(MYOBJS)

LUA_T=  lua
LUA_O=  lua.o

LUAC_T= luac
LUAC_O= luac.o

ALL_O= $(BASE_O) $(LUA_O) $(LUAC_O)
ALL_T= $(LUA_A) $(LUA_T) $(LUAC_T)
ALL_A= $(LUA_A)

# Targets start here.
default: $(PLAT)

all:    $(ALL_T)

o:  $(ALL_O)

a:  $(ALL_A)

$(LUA_A): $(BASE_O)
    $(AR) $@ $(BASE_O)
    $(RANLIB) $@

$(LUA_T): $(LUA_O) $(LUA_A)
    $(CC) -o $@ $(LDFLAGS) $(LUA_O) $(LUA_A) $(LIBS)

$(LUAC_T): $(LUAC_O) $(LUA_A)
    $(CC) -o $@ $(LDFLAGS) $(LUAC_O) $(LUA_A) $(LIBS)

clean:
    $(RM) $(ALL_T) $(ALL_O)

depend:
    @$(CC) $(CFLAGS) -MM l*.c

echo:
    @echo "PLAT= $(PLAT)"
    @echo "CC= $(CC)"
    @echo "CFLAGS= $(CFLAGS)"
    @echo "LDFLAGS= $(SYSLDFLAGS)"
    @echo "LIBS= $(LIBS)"
    @echo "AR= $(AR)"
    @echo "RANLIB= $(RANLIB)"
    @echo "RM= $(RM)"

# Convenience targets for popular platforms
ALL= all

none:
    @echo "Please do 'make PLATFORM' where PLATFORM is one of these:"
    @echo "   $(PLATS)"

aix:
    $(MAKE) $(ALL) CC="xlc" CFLAGS="-O2 -DLUA_USE_POSIX -DLUA_USE_DLOPEN" SYSLIBS="-ldl" SYSLDFLAGS="-brtl -bexpall"

bsd:
    $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN" SYSLIBS="-Wl,-E"

c89:
    $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_C89" CC="gcc -std=c89"
    @echo ''
    @echo '*** C89 does not guarantee 64-bit integers for Lua.'
    @echo ''


freebsd:
    $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -lreadline"

generic: $(ALL)

linux:
    $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -ldl -lreadline"

macosx:
    $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_MACOSX" SYSLIBS="-lreadline" CC=cc

mingw:
    $(MAKE) "LUA_A=lua53.dll" "LUA_T=lua.exe" \
    "AR=$(CC) -shared -o" "RANLIB=strip --strip-unneeded" \
    "SYSCFLAGS=-DLUA_BUILD_AS_DLL" "SYSLIBS=" "SYSLDFLAGS=-s" lua.exe
    $(MAKE) "LUAC_T=luac.exe" luac.exe

posix:
    $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX"

solaris:
    $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN -D_REENTRANT" SYSLIBS="-ldl"

# list targets that do not create files (but not all makes understand .PHONY)
.PHONY: all $(PLATS) default o a clean depend echo none

# DO NOT DELETE
lapi.o: lapi.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
 lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lstring.h \
 ltable.h lundump.h lvm.h
lauxlib.o: lauxlib.c lprefix.h lua.h luaconf.h lauxlib.h
lbaselib.o: lbaselib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
lbitlib.o: lbitlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
lcode.o: lcode.c lprefix.h lua.h luaconf.h lcode.h llex.h lobject.h \
 llimits.h lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h \
 ldo.h lgc.h lstring.h ltable.h lvm.h
lcorolib.o: lcorolib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
lctype.o: lctype.c lprefix.h lctype.h lua.h luaconf.h llimits.h
ldblib.o: ldblib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
ldebug.o: ldebug.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
 lobject.h ltm.h lzio.h lmem.h lcode.h llex.h lopcodes.h lparser.h \
 ldebug.h ldo.h lfunc.h lstring.h lgc.h ltable.h lvm.h
ldo.o: ldo.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
 lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lopcodes.h \
 lparser.h lstring.h ltable.h lundump.h lvm.h
ldump.o: ldump.c lprefix.h lua.h luaconf.h lobject.h llimits.h lstate.h \
 ltm.h lzio.h lmem.h lundump.h
lfunc.o: lfunc.c lprefix.h lua.h luaconf.h lfunc.h lobject.h llimits.h \
 lgc.h lstate.h ltm.h lzio.h lmem.h
lgc.o: lgc.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
 llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lstring.h ltable.h
linit.o: linit.c lprefix.h lua.h luaconf.h lualib.h lauxlib.h
liolib.o: liolib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
llex.o: llex.c lprefix.h lua.h luaconf.h lctype.h llimits.h ldebug.h \
 lstate.h lobject.h ltm.h lzio.h lmem.h ldo.h lgc.h llex.h lparser.h \
 lstring.h ltable.h
lmathlib.o: lmathlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
lmem.o: lmem.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
 llimits.h ltm.h lzio.h lmem.h ldo.h lgc.h
loadlib.o: loadlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
lobject.o: lobject.c lprefix.h lua.h luaconf.h lctype.h llimits.h \
 ldebug.h lstate.h lobject.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h \
 lvm.h
lopcodes.o: lopcodes.c lprefix.h lopcodes.h llimits.h lua.h luaconf.h
loslib.o: loslib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
lparser.o: lparser.c lprefix.h lua.h luaconf.h lcode.h llex.h lobject.h \
 llimits.h lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h \
 ldo.h lfunc.h lstring.h lgc.h ltable.h
lstate.o: lstate.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
 lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h llex.h \
 lstring.h ltable.h
lstring.o: lstring.c lprefix.h lua.h luaconf.h ldebug.h lstate.h \
 lobject.h llimits.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h
lstrlib.o: lstrlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
ltable.o: ltable.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
 llimits.h ltm.h lzio.h lmem.h ldo.h lgc.h lstring.h ltable.h lvm.h
ltablib.o: ltablib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
ltm.o: ltm.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
 llimits.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h ltable.h lvm.h
lua.o: lua.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
luac.o: luac.c lprefix.h lua.h luaconf.h lauxlib.h lobject.h llimits.h \
 lstate.h ltm.h lzio.h lmem.h lundump.h ldebug.h lopcodes.h
lundump.o: lundump.c lprefix.h lua.h luaconf.h ldebug.h lstate.h \
 lobject.h llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lstring.h lgc.h \
 lundump.h
lutf8lib.o: lutf8lib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
lvm.o: lvm.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
 llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lopcodes.h lstring.h \
 ltable.h lvm.h
lzio.o: lzio.c lprefix.h lua.h luaconf.h llimits.h lmem.h lstate.h \
 lobject.h ltm.h lzio.h
lfs.o: lfs.c lfs.h
crc32.o: crc32.c crc32.h

# (end of Makefile)

Any advice would be appreciated

Answer 1

This is what I have done and it works well:

linit.c

Added LFS in this section:

static const luaL_Reg loadedlibs[] = {
  {"_G", luaopen_base},
   ...
  {LUA_LFSLIBNAME, luaopen_lfs},

and in lualib.h added

#define LUA_LFSLIBNAME  "lfs"
LUAMOD_API int (luaopen_lfs) (lua_State *L);

Then build as usual. Hope this helps.

Answer 2

You need add lfs to linit.c and rebuild.