gfortran makefile not working on mac - makefile

Question

I am trying to run a makefile with gfortran in my mac. It compiles without problem in Fedora 18, but I can't make it work in Mac OS 10.8.4 with the last gfortran from HPC.
I am newbie on fortran, so some light would be appreciated.
Here is the Make file:
# Makefile made to work with GNU Make
.DEFAULT:
BIN=bin
OBJ=obj
vpath= %$(OBJ)/.o $(OBJ)
vpath= %.mod $(OBJ)
EXES= pasos \
pasosng \
pasosm \
trans \
cost \
lcal \
fluj \
loc \
eval \
impas \
imptra \
mats \
imploc \
matesp \
dimen
FC=gfortran
LN=gfortran
FCFLAGS=$(USER_FCFLAGS) -g3 -B $(OBJ) -J $(OBJ) #fc_options #fc_warnings
LFLAGS=$(USER_LFLAGS)
ifdef SystemRoot
dotexe=.exe
endif
ifdef F_PROFILE
FCFLAGS:=$(FCFLAGS) -pg
LFLAGS:=$(LFLAGS) -pg
endif
ifdef F_TEST
FCFLAGS:=-O0 -fbounds-check $(FCFLAGS)
else
FCFLAGS:=-O3 $(FCFLAGS)
endif
COMPILE=$(FC) $(FCFLAGS) -o $# -c $<
LINK=$(LN) $(LFLAGS) -o $# -Wl,-Map=$#.map $^
%.o : %.f90
$(COMPILE)
all: prepare $(EXES)
$(OBJ)/%.o : %.f90
$(COMPILE)
clean:
rm -rf $(OBJ) $(BIN)
prepare: $(BIN) $(OBJ)
$(BIN):
mkdir $(BIN)
$(OBJ):
mkdir $(OBJ)
pasos: prepare $(BIN)/pasos$(dotexe)
#echo $#
$(BIN)/pasos$(dotexe) : $(OBJ)/pasos.o \
$(OBJ)/nodes.o \
$(OBJ)/io_list.o \
$(OBJ)/rcomm.o \
$(OBJ)/tparc.o \
$(OBJ)/zcomm.o \
$(OBJ)/rcomm.o \
$(OBJ)/pcomm.o \
$(OBJ)/getoptm.o \
$(OBJ)/control.o \
$(OBJ)/heap.o \
$(OBJ)/gener.o \
$(OBJ)/param.o \
$(OBJ)/ascii.o \
$(OBJ)/pcomm.o \
$(OBJ)/mensamod.o \
$(OBJ)/optionsm.o \
$(OBJ)/debugm.o
$(LINK)
The file is longer, but I dont know if it is needed to understand the error. The error I get when I run make over the directory is:
tcapelle$ gnumake
gfortran -o bin/pasos -Wl,-Map=bin/pasos.map obj/pasos.o obj/nodes.o obj/io_list.o obj/rcomm.o obj/tparc.o obj/zcomm.o obj/pcomm.o obj/getoptm.o obj/control.o obj/heap.o obj/gener.o obj/param.o obj/ascii.o obj/mensamod.o obj/optionsm.o obj/debugm.o
ld: unknown option: -Map=bin/pasos.map
collect2: error: ld returned 1 exit status
gnumake: *** [bin/pasos] Error 1
Edit:
I changed in the makefile
LINK=$(LN) $(LFLAGS) -o $# -Wl,-Map=$#.map $^
to
LINK=$(LN) $(LFLAGS) -o $# $^
and it compiles with some errors, but it worked.
What does this -Wl,-Map= thing do?

Answer 1

The problem is that the BSD linker (in contrast to the GNU linker) does not recognize options, if they are separated from the corresponding value by an equal sign (instead of a whitespace). So
ld -Map test.map
is fine, while
ld -Map=test.map
is not. Therefore, you must make sure, the compiler passes the linker options to the linker in the latter form. For that you need
gfortran -Wl,-Map,test.map ...
which you can achieve by changing the definition of the LINK variable to:
LINK=$(LN) $(LFLAGS) -o $# -Wl,-Map,$#.map $^