diff --git a/src/MAKE/MACHINES/Makefile.mac_mpi b/src/MAKE/MACHINES/Makefile.mac_mpi
index 54a98e68d..61f025564 100755
--- a/src/MAKE/MACHINES/Makefile.mac_mpi
+++ b/src/MAKE/MACHINES/Makefile.mac_mpi
@@ -1,113 +1,113 @@
-# mac_mpi = Apple laptop, gcc 4.6, gfortran, Open MPI 1.4.3, FFTW 2.1.5, QUIP
+# mac_mpi = Apple laptop, MacPorts Open MPI 1.4.3, gcc 4.8, fftw, jpeg
 
 SHELL = /bin/sh
 
 # ---------------------------------------------------------------------
 # compiler/linker settings
 # generally no need to edit this section
 # unless additional compiler/linker flags or libraries needed for your machine
 
-CC =		${MPI_GCC46_PATH}/mpic++
+CC =	 	/opt/local/bin/mpicxx-openmpi-mp
 CCFLAGS =	-O3 
 SHFLAGS =	-fPIC
 DEPFLAGS =	-M
 
-LINK =		${MPI_GCC46_PATH}/mpic++
+LINK =		/opt/local/bin/mpicxx-openmpi-mp
 LINKFLAGS =	-O3
 LIB =           
 SIZE =		size
 
 ARCHIVE =	ar
 ARFLAGS =	-rc
 SHLIBFLAGS =	-shared
 
 # ---------------------------------------------------------------------
 # LAMMPS-specific settings, all OPTIONAL
 # specify settings for LAMMPS features you will use
 # if you change any -D setting, do full re-compile after "make clean"
 
 # LAMMPS ifdef settings
 # see possible settings in Section 2.2 (step 4) of manual
 
-LMP_INC =	-DLAMMPS_GZIP -DQUIP_GFORTRAN -DLAMMPS_JPEG
+LMP_INC =	-DLAMMPS_GZIP -DLAMMPS_JPEG
 
 # MPI library
 # see discussion in Section 2.2 (step 5) of manual
 # MPI wrapper compiler/linker can provide this info
 # can point to dummy MPI library in src/STUBS as in Makefile.serial
 # use -D MPICH and OMPI settings in INC to avoid C++ lib conflicts
 # INC = path for mpi.h, MPI compiler settings
 # PATH = path for MPI library
 # LIB = name of MPI library
 
 MPI_INC =       -DOMPI_SKIP_MPICXX
 MPI_PATH =	
 MPI_LIB =	
 
 # FFT library
 # see discussion in Section 2.2 (step 6) of manaul
 # can be left blank to use provided KISS FFT library
 # INC = -DFFT setting, e.g. -DFFT_FFTW, FFT compiler settings
 # PATH = path for FFT library
 # LIB = name of FFT library
 
 FFTW =	/usr/local
 
 FFT_INC =       -DFFT_FFTW -I${FFTW}/include
 FFT_PATH =	-L${FFTW}/lib
 FFT_LIB =	-lfftw
 
 # JPEG and/or PNG library
 # see discussion in Section 2.2 (step 7) of manual
 # only needed if -DLAMMPS_JPEG or -DLAMMPS_PNG listed with LMP_INC
 # INC = path(s) for jpeglib.h and/or png.h
 # PATH = path(s) for JPEG library and/or PNG library
 # LIB = name(s) of JPEG library and/or PNG library
 
 JPG_INC =       -I/opt/local/include
 JPG_PATH = 	-L/opt/local/lib
 JPG_LIB =	-ljpeg
 
 # ---------------------------------------------------------------------
 # build rules and dependencies
 # do not edit this section
 
 include	Makefile.package.settings
 include	Makefile.package
 
 EXTRA_INC = $(LMP_INC) $(PKG_INC) $(MPI_INC) $(FFT_INC) $(JPG_INC) $(PKG_SYSINC)
 EXTRA_PATH = $(PKG_PATH) $(MPI_PATH) $(FFT_PATH) $(JPG_PATH) $(PKG_SYSPATH)
 EXTRA_LIB = $(PKG_LIB) $(MPI_LIB) $(FFT_LIB) $(JPG_LIB) $(PKG_SYSLIB)
 
 # Path to src files
 
 vpath %.cpp ..
 vpath %.h ..
 
 # Link target
 
 $(EXE):	$(OBJ)
 	$(LINK) $(LINKFLAGS) $(EXTRA_PATH) $(OBJ) $(EXTRA_LIB) $(LIB) -o $(EXE)
 	$(SIZE) $(EXE)
 
 # Library targets
 
 lib:	$(OBJ)
 	$(ARCHIVE) $(ARFLAGS) $(EXE) $(OBJ)
 
 shlib:	$(OBJ)
 	$(CC) $(CCFLAGS) $(SHFLAGS) $(SHLIBFLAGS) $(EXTRA_PATH) -o $(EXE) \
         $(OBJ) $(EXTRA_LIB) $(LIB)
 
 # Compilation rules
 
 %.o:%.cpp
 	$(CC) $(CCFLAGS) $(SHFLAGS) $(EXTRA_INC) -c $<
 
 %.d:%.cpp
 	$(CC) $(CCFLAGS) $(EXTRA_INC) $(DEPFLAGS) $< > $@
 
 # Individual dependencies
 
 DEPENDS = $(OBJ:.o=.d)
 sinclude $(DEPENDS)