Re: LuaBitOp: Cant require "bit=>./bit.so: undefined symbol: luaopen_bit

[meino.cramer@...]

Luiz Henrique de Figueiredo <lhf@tecgraf.puc-rio.br> [12-11-30 18:56]:
> >     error loading module 'bit' from file '/usr/local/lib64/lua/5.1/bit.so':
> >         /usr/local/lib64/lua/5.1/bit.so: undefined symbol: luaopen_bit
> 
> Ok, now it is trying to load the bit.so that you have installed. But the
> error message is telling you that bit.so does not seem to be a Lua library.
> 
> What is the output of "nm -g /usr/local/lib64/lua/5.1/bit.so" ?
> 
> Is there a chance that bit.so was built using C++ instead of C?
> 

    computer:/home/user>nm -g /usr/local/lib64/lua/5.1/bit.so
                    w _Jv_RegisterClasses
    0000000000203048 A __bss_start
                    w __cxa_finalize@@GLIBC_2.2.5
                    w __gmon_start__
    0000000000203048 A _edata
    0000000000203058 A _end
    0000000000001bf8 T _fini
    0000000000000620 T _init
                    U luaL_typerror
                    U lua_gettop
                    U lua_isnumber
                    U lua_pushlstring
                    U lua_pushnumber
                    U lua_tonumber
                    U lua_type
    computer:/home/user>file /usr/local/lib64/lua/5.1/bit.so
    /usr/local/lib64/lua/5.1/bit.so: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, not stripped
    computer:/home/user>

I built the library with the makefile, which comes with the sources...

The appropiate contents:

    CC= gcc
    CCOPT= -O2 -fomit-frame-pointer
    CCWARN= -Wall
    SOCC= $(CC) -shared
    SOCFLAGS= -fPIC $(CCOPT) $(CCWARN) $(DEFINES) $(INCLUDES) $(CFLAGS)
    SOLDFLAGS= -fPIC $(LDFLAGS)
    RM= rm -f
    INSTALL= install -p
    INSTALLPATH= $(LUA) installpath.lua

???