Makefile command on mac OS shows incorrect output - linux

Question

I am new to Mac OS, and want to execute following makefile program.
GCCBASE = $(GCMDIR)/where/cplusplus/gcc
SRCS:=$(wildcard *.cpp) program.cpp
OBJS:=$(SRCS:.cpp=$(OBJDIR).o)
INCLUDES:=-I. -I$(ADD_INCLUDES)/Auto*.h -I$(ADD_INCLUDES)/program.h
OUTBASE =$(OUTBASE_EX)
OUT_ARTIFACT=Program
ifeq ($(OSNAME),Linux)
ifeq ($(GFLIB_MODEL),64bit)
CXXEXTRA_FLAGS = -m64
GCCDIR = $(GCCBASE)/linux64/4.5.3
GCCLIBDIR_W = $(GCCBASE)/linux64/4.5.3/lib64
GCCLIBDIR = $(GCCLIBDIR_W)
CFLAGS_common += -I$(GCCBASE)/linux64/4.5.3/include
OUTDIR = $(OUTBASE)/64
CFLAGS_link_libs = -L$(GCCLIBDIR) -lmyLib
else
CXXEXTRA_FLAGS = -m32
GCCDIR = $(GCCBASE)/linux/4.5.3
GCCLIBDIR_W = $(GCCBASE)/linux/4.5.3/lib
GCCLIBDIR = $(GCCLIBDIR_W)
CFLAGS_common += -I$(GCCBASE)/linux/4.5.3/include
OUTDIR = $(OUTBASE)/32
CFLAGS_link_libs = -L$(GCCLIBDIR) -lmyLib
endif
endif
ifeq ($(OSNAME),Darwin)
echo "Mac OS"
ifeq ($(GFLIB_MODEL),64bit)
CXXEXTRA_FLAGS = -m64
GCCDIR = $(GCCBASE)/macosx/4.8.1
GCCLIBDIR_W = $(GCCBASE)/macosx/4.8.1/lib
GCCLIBDIR = $(GCCLIBDIR_W)
CFLAGS_common += -I$(GCCBASE)/macosx/4.8.1/include
OUTDIR = $(OUTBASE)/64
CFLAGS_link_libs = -L$(GCCLIBDIR) -lmyLib
else
CXXEXTRA_FLAGS = -m32
GCCDIR = $(GCCBASE)/macosx/4.8.1
GCCLIBDIR_W = $(GCCBASE)/macosx/4.8.1/lib/i386
GCCLIBDIR = $(GCCLIBDIR_W)
CFLAGS_common += -I$(GCCBASE)/macosx/4.8.1/include
OUTDIR = $(OUTBASE)/32
CFLAGS_link_libs = -L$(GCCLIBDIR) -lmyLib
endif
endif
all: $(SRCS)
echo "Building Program application..."
$(CXX) $(CXXEXTRA_FLAGS) $(CFLAGS_common) $(INCLUDES) $^ -o $(OUTDIR)/$(OUT_ARTIFACT) $(CFLAGS_link_libs)
rm -f *.[o] *.log core
Command that gets executed on mac OS looks like this with linker errors since myLib was not found:
[exec] c++ -I. -IAuto*.h -IProgram.h Program.cpp -o /Program
While I am expecting my command to be like this:
[exec] c++ -m32 -I. -IAuto*.h -IProgram.h Program.cpp -o /Program -LmyPath -lmyLib
Why is my command not including -m32 and Linking library path?
I also tried printing CXXEXTRA_FLAGS and CFLAGS_link_libs, but they are empty.

Answer 1

You never set the variables OSNAME or GFLIB_MODEL to any value in this makefile, so they're both empty. Thus neither of the tests for OSNAME are true, and those values are never set in CXXEXTRA_FLAGS etc.
ETA: Here's an example based on your comments:
$ cat Makefile
ifeq ($(OSTYPE),Mac OS X)
$(info got mac)
endif
all: ; #:
$ make
$ make OSTYPE=Mac
$ make OSTYPE='Mac OS X'
got mac