gcc ld: symbol(s) not found for architecture x86_64

Question

Alright so I'm making a lexer and a parser using Ocamlyacc. I've done my research and I think it's something to do with my makefile not picking the right bit version for my compiler or something like it? I don't know much about makefiles which is why I'm asking.

I've run my program on another computer where it works without trouble so it gotta be something to do with my machine.

It's a MacBook Pro 64 bit. I'm using Xcode 4.2.1.

Here's the makefile:

SHELL        = /bin/sh

C_C          = gcc 
CPP_C        = g++ 
ifdef GPROF
C_CPP_FLAGS = -pg -O3
else
ifndef DEBUG
C_CPP_FLAGS  = -O3
else
C_CPP_FLAGS  = -g
endif
endif
C_LD         = $(C_C)
CPP_LD       = $(CPP_C)

C_YACC       = bison
C_LEX        = flex

AR           = ar
RANLIB       = ranlib

OCAML_C      = ocamlc
OCAML_OPT_C  = ocamlopt
ifdef GPROF
OCAML_C_FLAGS     = -dtypes 
OCAML_OPT_C_FLAGS = -dtypes
OCAML_LD     = $(OCAML_C) -g
OCAML_OPT_LD = $(OCAML_OPT_C) -p
else
ifndef DEBUG
OCAML_C_FLAGS     = -dtypes 
OCAML_OPT_C_FLAGS = -dtypes
OCAML_LD     = $(OCAML_C) -g
OCAML_OPT_LD = $(OCAML_OPT_C)
else
OCAML_C_FLAGS     = -dtypes
OCAML_OPT_C_FLAGS = -dtypes
OCAML_LD     = $(OCAML_C) -g
OCAML_OPT_LD = $(OCAML_OPT_C)
endif
endif
OCAML_MKTOP  = ocamlmktop
OCAML_CP     = ocamlcp
OCAML_DEP    = ocamldep
OCAML_LEX    = ocamllex
OCAML_YACC   = ocamlyacc

OCAML_C_CPP_INC = -I $(shell $(OCAML_C) -v | tail -1 | sed -e \
                         's/^Standard library directory: //')

The error that I'm getting is:

ld: symbol(s) not found for architecture x86_64

Here's the full output:

make
Linking OCAML (top level) program nanoml.top
ocamlmktop    -o nanoml.top -custom   nano.cmo nanoLex.cmo nanoParse.cmo main.cmo \
-cc g++  -cclib ' '
/var/folders/n3/jgblhwmj40lchgq71bmgr8sw0000gn/T/camlprimbd6a63.c:784: warning: deprecated conversion from string constant to ‘char*’
.
. //The same line ALOT of times. Removed due to limit of chars in a single post.
.
/var/folders/n3/jgblhwmj40lchgq71bmgr8sw0000gn/T/camlprimbd6a63.c:784: warning: deprecated conversion from string constant to ‘char*’
ld: warning: ignoring file /usr/local/lib/ocaml/libcamlrun.a, file was built for archive which is not the architecture being linked (x86_64)
Undefined symbols for architecture x86_64:
  "_main", referenced from:
      start in crt1.10.6.o
  "_caml_alloc_dummy", referenced from:
      _caml_builtin_cprim in ccZbZ9Mf.o
.
. //And many of these lines
.
  "_caml_get_exception_backtrace", referenced from:
      _caml_builtin_cprim in ccZbZ9Mf.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
File "_none_", line 1, characters 0-1:
Error: Error while building custom runtime system
make: *** [nanoml.top] Error 2

Thank you in advance!

EDIT: I'm only using Ocaml. No C++ or C that needs to be linked with it. I've never tried running my ocaml code with a makefile before but I can run other ocaml code on this computer. This is the first time it fails but it is the first time I use a makefile.

And the same makefile and code works on other machines(older machines though) so I think it has something to do with this one using 64 bits.

I found I've been given another makefile which looks like this:

# Generic compilation rules

%.o : %.c
    @echo Compiling C file $<
    $(C_C) $(C_CPP_FLAGS) $(C_CPP_INCLUDES) -c $< -o $@

%.o : %.cc
    @echo Compiling C++ file $<
    $(CPP_C) $(C_CPP_FLAGS) $(C_CPP_INCLUDES) -c $< -o $@

%.o : %.cpp
    @echo Compiling C++ file $<
    $(CPP_C) $(C_CPP_FLAGS) $(C_CPP_INCLUDES) -c $< -o $@

%.cmi: %.mli
    @echo Compiling OCAML interface $<
    $(OCAML_C) $(OCAML_C_FLAGS) $(OCAML_INCLUDES) -c $< -o $@

%.cmo: %.ml
    @echo Compiling \(to byte code\) OCAML module $<
    $(OCAML_C) $(OCAML_C_FLAGS) $(OCAML_INCLUDES) -c $< -o $@

%.cmx: %.ml
    @echo Compiling \(to native code\) OCAML module $<
    $(OCAML_OPT_C) $(OCAML_OPT_C_FLAGS) $(OCAML_INCLUDES) -c $< -o $@

%.ml: %.mll
    @echo Lexing OCAML file $<
    $(OCAML_LEX) $<

%.ml %.mli: %.mly
    @echo Yaccing OCAML file $<
    $(OCAML_YACC) $<



# Generic cleaning rules

default-clean:
    rm -f *~ *.o *.cmo *.cmx .*.depend *.cmi

.PHONY: default-clean



# Generic link rules and library creation rules
#
# These rules assume that the following variables are set (when necessary):
#
# - C_EXE          : name of the C executable
# - CPP_EXE        : name of the C++ executable
# - OCAML_EXE      : name of the OCaml executable (without suffix)
# - OCAML_TPL_EXE  : name of the OCaml custom toplevel (without suffix)
# - C_CPP_LIB      : name of the C/C++ library
# - OCAML_LIB      : name of the OCaml library (without suffix)
# - C_CPP_EXE_OBJ  : list of C/C++ objects (without suffix) to build exe
# - OCAML_EXE_OBJ  : list of OCaml modules (without suffix) to build exe
# - C_CPP_LIB_OBJ  : list of C/C++ objects (without suffix) to build lib
# - OCAML_LIB_OBJ  : list of OCaml modules (without suffix) to build lib
# - C_CPP_LD_FLAGS : C and C++ linker flags
# - OCAML_LD_FLAGS : OCaml linker (both native and bytecode) flags
# - C_CPP_LD_LIBS  : C and C++ linker libraries
# - OCAML_LD_LIBS  : OCaml linker (both native and bytecode) libraries

ifdef C_EXE
$(C_EXE): $(C_CPP_EXE_OBJ:%=%.o)
    @echo Linking C program $@
    $(C_LD) $(C_CPP_LD_FLAGS) -o $@ $(C_CPP_EXE_OBJ:%=%.o) $(C_CPP_LD_LIBS)
endif

ifdef CPP_EXE
$(CPP_EXE): $(C_CPP_EXE_OBJ:%=%.o)
    @echo Linking C++ program $@
    $(CPP_LD) $(C_CPP_LD_FLAGS) -o $@ $(C_CPP_EXE_OBJ:%=%.o) $(C_CPP_LD_LIBS)
endif

ifdef C_CPP_LIB
$(C_CPP_LIB).a: $(C_CPP_LIB_OBJ:%=%.o)
    @echo Creating C/C++ library $@
    $(AR) r $@ $?
    $(RANLIB) $@
endif

ifdef OCAML_EXE
$(OCAML_EXE).byte: $(C_CPP_EXE_OBJ:%=%.o) $(OCAML_EXE_OBJ:%=%.cmo)
    @echo Linking OCAML \(byte code\) program $@
    $(OCAML_LD) $(OCAML_LD_FLAGS) -o $@ -custom $(OCAML_LD_LIBS:%=%.cma) $(C_CPP_EXE_OBJ:%=%.o) $(OCAML_EXE_OBJ:%=%.cmo) \
    -cc $(CPP_C) -cclib '$(C_CPP_LD_FLAGS) $(C_CPP_LD_LIBS)'

$(OCAML_EXE).opt: $(C_CPP_EXE_OBJ:%=%.o) $(OCAML_EXE_OBJ:%=%.cmx)
    @echo Linking OCAML \(native code\) program $@
    $(OCAML_OPT_LD) $(OCAML_LD_FLAGS) -o $@ $(OCAML_LD_LIBS:%=%.cmxa) $(C_CPP_EXE_OBJ:%=%.o) $(OCAML_EXE_OBJ:%=%.cmx) \
    -cc $(CPP_C) -cclib '$(C_CPP_LD_FLAGS) $(C_CPP_LD_LIBS)'

$(OCAML_EXE).top: $(C_CPP_EXE_OBJ:%=%.o) $(OCAML_EXE_OBJ:%=%.cmo)
    @echo Linking OCAML \(top level\) program $@
    $(OCAML_MKTOP)   $(OCAML_LD_FLAGS) -o $@ -custom $(OCAML_LD_LIBS:%=%.cma) $(C_CPP_EXE_OBJ:%=%.o) $(OCAML_EXE_OBJ:%=%.cmo) \
    -cc $(CPP_C) -cclib '$(C_CPP_LD_FLAGS) $(C_CPP_LD_LIBS)'


endif

ifdef OCAML_TPL_EXE
$(OCAML_TPL_EXE).byte: $(C_CPP_EXE_OBJ:%=%.o) $(OCAML_EXE_OBJ:%=%.cmo)
    @echo Linking OCAML \(byte code\) toplevel $@
    $(OCAML_MKTOP) $(OCAML_LD_FLAGS) -o $@ -custom $(OCAML_LD_LIBS:%=%.cma) $(C_CPP_EXE_OBJ:%=%.o) $(OCAML_EXE_OBJ:%=%.cmo) \
    -cc $(CPP_C) -cclib '$(C_CPP_LD_FLAGS) $(C_CPP_LD_LIBS)'
endif

ifdef OCAML_LIB
$(OCAML_LIB).cma: $(OCAML_LIB_OBJ:%=%.cmo)
    @echo Creating OCAML \(byte code\) library $@
    $(OCAML_LD) $(OCAML_LD_FLAGS) -a -o $@ $(OCAML_LIB_OBJ:%=%.cmo)

$(OCAML_LIB).cmxa $(OCAML_LIB).a: $(OCAML_LIB_OBJ:%=%.cmx)
    @echo Creating OCAML \(native code\) library $@
    $(OCAML_OPT_LD) $(OCAML_LD_FLAGS) -a -o $@ $(OCAML_LIB_OBJ:%=%.cmx)
endif

ifdef OCAML_CINTF
ifdef OCAML_BYTECODE_CINTF
$(OCAML_CINTF).o: $(OCAML_CINTF_OBJ:%=%.cmo)
    @echo Creating OCAML \(native code\) C interface library $@
    $(OCAML_LD) $(OCAML_LD_FLAGS) -output-obj -o $@ $(OCAML_LD_LIBS:%=%.cma) $(OCAML_CINTF_OBJ:%=%.cmo)

$(OCAML_CINTF_LIB).a: $(OCAML_CINTF).o $(C_CPP_CINTF_OBJ:%=%.o)
    @echo Creating C/C++ interface library $@
    $(AR) r $@ $?
    $(RANLIB) $@
else
$(OCAML_CINTF).o: $(OCAML_CINTF_OBJ:%=%.cmx)
    @echo Creating OCAML \(native code\) C interface library $@
    $(OCAML_OPT_LD) $(OCAML_LD_FLAGS) -output-obj -o $@ $(OCAML_LD_LIBS:%=%.cmxa) $(OCAML_CINTF_OBJ:%=%.cmx)

$(OCAML_CINTF_LIB).a: $(OCAML_CINTF).o $(C_CPP_CINTF_OBJ:%=%.o)
    @echo Creating C/C++ interface library $@
    $(AR) r $@ $?
    $(RANLIB) $@
endif
endif



# Generic dependencies creation rules

.%.mli.depend: %.mli
    @echo Generating dependencies for OCAML interface $<
    $(OCAML_DEP) $< > $@

.%.ml.depend: %.ml
    @echo Generating dependencies for OCAML module $<
    $(OCAML_DEP) $< > $@

Answer 1

The interesting line is

ld: warning: ignoring file /usr/local/lib/ocaml/libcamlrun.a, file was built for archive which is not the architecture being linked (x86_64)

It tells you that your ocaml runtime is a probably a 32 bit library, instead of the 64 bits you need.

You might want to try the "-m32" flag of g++ to compile everything in 32 bits, or to install a 64 bit version of ocaml.