diff --git a/lib/colvars/Makefile.32-bit b/lib/colvars/Makefile.32-bit
new file mode 100644
index 0000000000..e187da0d40
--- /dev/null
+++ b/lib/colvars/Makefile.32-bit
@@ -0,0 +1,103 @@
+# library build -*- makefile -*- for colvars module
+
+# ------ SETTINGS ------
+
+CXX =		g++ -m32
+CXXFLAGS =	-O2 -march=i686 -mtune=generic -mfpmath=387 -mpc64	\
+		-fno-rtti -fno-exceptions -finline-functions		\
+                -ffast-math -funroll-loops -fstrict-aliasing		\
+                -Wall -W -Wno-uninitialized
+ARCHIVE =	ar
+ARCHFLAG =	-rscv
+SHELL =		/bin/sh
+
+# ------ DEFINITIONS ------
+
+SRC = colvaratoms.cpp colvarbias_abf.cpp colvarbias.cpp colvarbias_meta.cpp \
+ colvar.cpp colvarcomp_angles.cpp colvarcomp.cpp colvarcomp_coordnums.cpp   \
+ colvarcomp_distances.cpp colvarcomp_protein.cpp colvarcomp_rotations.cpp   \
+ colvargrid.cpp colvarmodule.cpp colvarparse.cpp colvarvalue.cpp
+
+DIR = Obj_32-bit/
+LIB = $(DIR)libcolvars.a
+OBJ = $(SRC:%.cpp=$(DIR)%.o)
+EXE = #colvars_standalone
+
+# ------ MAKE PROCEDURE ------
+
+default: $(DIR) $(LIB) $(EXE)
+
+$(DIR):
+	mkdir $(DIR)
+
+$(LIB): $(DIR)	$(OBJ)
+	$(ARCHIVE) $(ARFLAGS) $(LIB) $(OBJ)
+
+$(DIR)colvars_standalone: colvars_main.o colvarproxy_standalone.o $(LIB)
+	$(CXX) -o $@ $(CXXFLAGS) $^
+
+# ------ MAKE FLAGS ------
+
+.SUFFIXES:
+.SUFFIXES: .cpp .o
+
+.PHONY: default clean
+
+# ------ COMPILE RULES ------
+
+$(DIR)%.o: %.cpp
+	$(CXX) $(CXXFLAGS) -c $< -o $@
+
+# ------ DEPENDENCIES ------
+#
+$(DIR)colvars_main.o: colvars_main.cpp colvarmodule.h colvartypes.h colvarproxy.h \
+ colvarproxy_standalone.h colvaratoms.h colvarparse.h colvarvalue.h
+$(DIR)colvarproxy_standalone.o: colvarproxy_standalone.cpp colvarmodule.h \
+ colvartypes.h colvarproxy.h colvaratoms.h colvarparse.h colvarvalue.h \
+ colvarproxy_standalone.h
+$(DIR)colvaratoms.o: colvaratoms.cpp colvarmodule.h colvartypes.h colvarproxy.h \
+ colvarparse.h colvarvalue.h colvaratoms.h
+$(DIR)colvarbias_abf.o: colvarbias_abf.cpp colvarmodule.h colvartypes.h \
+ colvarproxy.h colvar.h colvarvalue.h colvarparse.h colvarbias_abf.h \
+ colvarbias.h colvargrid.h
+$(DIR)colvarbias.o: colvarbias.cpp colvarmodule.h colvartypes.h colvarproxy.h \
+ colvarvalue.h colvarbias.h colvar.h colvarparse.h
+$(DIR)colvarbias_meta.o: colvarbias_meta.cpp colvar.h colvarmodule.h \
+ colvartypes.h colvarproxy.h colvarvalue.h colvarparse.h \
+ colvarbias_meta.h colvarbias.h colvargrid.h
+$(DIR)colvar.o: colvar.cpp colvarmodule.h colvartypes.h colvarproxy.h \
+ colvarvalue.h colvarparse.h colvar.h colvarcomp.h colvaratoms.h
+$(DIR)colvarcomp_angles.o: colvarcomp_angles.cpp colvarmodule.h colvartypes.h \
+ colvarproxy.h colvar.h colvarvalue.h colvarparse.h colvarcomp.h \
+ colvaratoms.h
+$(DIR)colvarcomp.o: colvarcomp.cpp colvarmodule.h colvartypes.h colvarproxy.h \
+ colvarvalue.h colvar.h colvarparse.h colvarcomp.h colvaratoms.h
+$(DIR)colvarcomp_coordnums.o: colvarcomp_coordnums.cpp colvarmodule.h \
+ colvartypes.h colvarproxy.h colvarparse.h colvarvalue.h colvaratoms.h \
+ colvar.h colvarcomp.h
+$(DIR)colvarcomp_distances.o: colvarcomp_distances.cpp colvarmodule.h \
+ colvartypes.h colvarproxy.h colvarvalue.h colvarparse.h colvar.h \
+ colvarcomp.h colvaratoms.h
+$(DIR)colvarcomp_protein.o: colvarcomp_protein.cpp colvarmodule.h colvartypes.h \
+ colvarproxy.h colvarvalue.h colvarparse.h colvar.h colvarcomp.h \
+ colvaratoms.h
+$(DIR)colvarcomp_rotations.o: colvarcomp_rotations.cpp colvarmodule.h \
+ colvartypes.h colvarproxy.h colvarvalue.h colvarparse.h colvar.h \
+ colvarcomp.h colvaratoms.h
+$(DIR)colvargrid.o: colvargrid.cpp colvarmodule.h colvartypes.h colvarproxy.h \
+ colvarvalue.h colvarparse.h colvar.h colvarcomp.h colvaratoms.h \
+ colvargrid.h
+$(DIR)colvarmodule.o: colvarmodule.cpp colvarmodule.h colvartypes.h colvarproxy.h \
+ colvarparse.h colvarvalue.h colvar.h colvarbias.h colvarbias_meta.h \
+ colvargrid.h colvarbias_abf.h
+$(DIR)colvarparse.o: colvarparse.cpp colvarmodule.h colvartypes.h colvarproxy.h \
+ colvarvalue.h colvarparse.h
+$(DIR)colvarvalue.o: colvarvalue.cpp colvarmodule.h colvartypes.h colvarproxy.h \
+ colvarvalue.h
+
+# ------ CLEAN ------
+
+clean:
+	-rm $(DIR)*.o *~ $(LIB)
+	-rmdir $(DIR)
+
diff --git a/lib/colvars/Makefile.lammps b/lib/colvars/Makefile.lammps
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/lib/meam/Makefile.32-bit b/lib/meam/Makefile.32-bit
new file mode 100644
index 0000000000..0e1e49857b
--- /dev/null
+++ b/lib/meam/Makefile.32-bit
@@ -0,0 +1,66 @@
+# * -*- makefile -*-
+# *_________________________________________________________________________*
+# *      MEAM: MODEFIED EMBEDDED ATOM METHOD                                *
+# *      DESCRIPTION: SEE READ-ME                                           *
+# *      FILE NAME: Makefile                                                *
+# *      AUTHORS: Greg Wagner, Sandia National Laboratories                 * 
+# *      CONTACT: gjwagne@sandia.gov                                        *
+# *_________________________________________________________________________*/
+
+# To compile and link LAMMPS to the reax library generated by this Makefile,
+# try appending the following definitions to the standard definitions in
+# whatever LAMMPS Makefile your are using.  
+# LINKFLAGS =    -L../../lib/meam
+# USRLIB =       -lmeam -lgfortran
+
+SHELL = /bin/sh
+
+# ------ FILES ------
+
+SRC = meam_data.F meam_setup_done.F meam_setup_global.F meam_setup_param.F meam_dens_init.F meam_dens_final.F meam_force.F meam_cleanup.F
+
+FILES = $(SRC) Makefile 
+
+# ------ DEFINITIONS ------
+
+DIR = Obj_32-bit/
+LIB = $(DIR)libmeam.a
+OBJ = $(SRC:%.F=$(DIR)%.o)
+
+# ------ SETTINGS ------
+
+F90 =           gfortran -m32
+F90FLAGS =      -O3 -march=i686 -mtune=generic -mfpmath=387 -mpc64  \
+		-ffast-math -funroll-loops -fstrict-aliasing -J$(DIR) \
+		-Wall -W -Wno-uninitialized -fno-second-underscore
+#F90FLAGS =      -O 
+ARCHIVE =	ar
+ARCHFLAG =	-rcs
+LINK =         	g++
+LINKFLAGS =	-O
+USRLIB =
+SYSLIB =
+
+# ------ MAKE PROCEDURE ------
+
+default: $(DIR) $(LIB)
+
+$(DIR):
+	-mkdir $(DIR)
+
+$(LIB):  $(OBJ)
+	$(ARCHIVE) $(ARFLAGS) $(LIB) $(OBJ)
+
+# ------ COMPILE RULES ------
+
+$(DIR)%.o:%.F
+	$(F90) $(F90FLAGS) -c $< -o $@
+
+# ------ CLEAN ------
+
+clean:
+	-rm $(DIR)*.o $(DIR)*.mod *~ $(LIB)
+	-rmdir $(DIR)
+
+tar:
+	-tar -cvf ../MEAM.tar $(FILES)
diff --git a/lib/poems/Makefile.32-bit b/lib/poems/Makefile.32-bit
new file mode 100644
index 0000000000..035c469b08
--- /dev/null
+++ b/lib/poems/Makefile.32-bit
@@ -0,0 +1,113 @@
+# *
+# *_________________________________________________________________________*
+# *      POEMS: PARALLELIZABLE OPEN SOURCE EFFICIENT MULTIBODY SOFTWARE     *
+# *      DESCRIPTION: SEE READ-ME                                           *
+# *      FILE NAME: Makefile                                                *
+# *      AUTHORS: See Author List                                           * 
+# *      GRANTS: See Grants List                                            *
+# *      COPYRIGHT: (C) 2005 by Authors as listed in Author's List          *
+# *      LICENSE: Please see License Agreement                              *
+# *      DOWNLOAD: Free at www.rpi.edu/~anderk5                             *
+# *      ADMINISTRATOR: Prof. Kurt Anderson                                 *
+# *                     Computational Dynamics Lab                          *
+# *                     Rensselaer Polytechnic Institute                    *
+# *                     110 8th St. Troy NY 12180                           * 
+# *      CONTACT:        anderk5@rpi.edu                                    *
+# *_________________________________________________________________________*/
+
+SHELL = /bin/sh
+
+# which file will be copied to Makefile.lammps
+
+EXTRAMAKE = Makefile.lammps.empty
+
+# ------ FILES ------
+
+SRC_MAIN = workspace.cpp system.cpp poemsobject.cpp 
+INC_MAIN = workspace.h system.h poemsobject.h
+
+SRC_BODY =      body.cpp rigidbody.cpp particle.cpp inertialframe.cpp
+INC_BODY =      bodies.h body.h rigidbody.h particle.h inertialframe.h
+
+
+SRC_JOINT =     joint.cpp revolutejoint.cpp prismaticjoint.cpp sphericaljoint.cpp \
+    freebodyjoint.cpp body23joint.cpp mixedjoint.cpp
+INC_JOINT =     joints.h joint.h revolutejoint.h prismaticjoint.h sphericaljoint.h \
+    freebodyjoint.h body23joint.h mixedjoint.h
+
+SRC_POINT =     point.cpp fixedpoint.cpp
+INC_POINT =     points.h point.h fixedpoint.h
+
+SRC_SOLVE = solver.cpp  
+INC_SOLVE = solver.h  
+
+SRC_ORDERN = onsolver.cpp onfunctions.cpp onbody.cpp
+INC_ORDERN = onsolver.h onfunctions.h onbody.h
+
+SRC_MAT =       virtualmatrix.cpp matrix.cpp matrixfun.cpp mat3x3.cpp virtualcolmatrix.cpp \
+    colmatrix.cpp vect3.cpp virtualrowmatrix.cpp rowmatrix.cpp mat6x6.cpp vect6.cpp \
+    fastmatrixops.cpp colmatmap.cpp eulerparameters.cpp vect4.cpp norm.cpp mat4x4.cpp \
+    
+INC_MAT =       matrices.h virtualmatrix.h matrix.h matrixfun.h mat3x3.h virtualcolmatrix.h \
+    colmatrix.h vect3.h virtualrowmatrix.h rowmatrix.h mat6x6.h vect6.h \
+    fastmatrixops.h colmatmap.h eulerparameters.h vect4.h norm.h mat4x4.h 
+
+SRC_MISC = poemstreenode.cpp
+INC_MISC = poemslist.h poemstreenode.h poemstree.h poemsnodelib.h SystemProcessor.h defines.h POEMSChain.h
+
+SRC = $(SRC_MAIN) $(SRC_BODY) $(SRC_JOINT) $(SRC_POINT) $(SRC_SOLVE) $(SRC_ORDERN) $(SRC_MAT) $(SRC_MISC) 
+INC = $(INC_MAIN) $(INC_BODY) $(INC_JOINT) $(INC_POINT) $(INC_SOLVE) $(INC_ORDERN) $(INC_MAT) $(INC_MISC) 
+
+FILES = $(SRC) $(INC) Makefile Authors_List.txt Grants_List.txt POEMS_License.txt README Copyright_Notice
+
+# ------ DEFINITIONS ------
+
+DIR = Obj_32-bit/
+LIB = $(DIR)libpoems.a
+OBJ = $(SRC:%.cpp=$(DIR)%.o)
+
+# ------ SETTINGS ------
+
+CC =	        g++ -m32
+CCFLAGS =	-O2 -march=i686 -mtune=generic -mfpmath=387 -mpc64	\
+		-ffast-math -funroll-loops -finline-functions -fno-rtti	\
+		-fno-exceptions -fstrict-aliasing \
+		-Wall -W -Wno-uninitialized 
+ARCHIVE =	ar
+ARCHFLAG =	-rcs
+DEPFLAGS =      -M
+LINK =         	g++ -m32
+LINKFLAGS =	-O
+USRLIB =
+SYSLIB =
+
+# ------ MAKE PROCEDURE ------
+
+default: $(DIR) $(LIB)
+
+$(DIR):
+	-mkdir $(DIR)
+
+$(LIB): $(OBJ)
+	$(ARCHIVE) $(ARFLAGS) $(LIB) $(OBJ)
+	@cp $(EXTRAMAKE) Makefile.lammps
+
+# ------ COMPILE RULES ------
+
+$(DIR)%.o:%.cpp
+	$(CC) $(CCFLAGS) -c $< -o $@
+
+$(DIR)%.d:%.cpp
+	$(CC) $(CCFLAGS) $(DEPFLAGS) $< > $@		
+
+# ------ DEPENDENCIES ------
+
+DEPENDS = $(OBJ:.o=.d)
+
+# ------ CLEAN ------
+
+clean:
+	-rm $(DIR)*.o $(DIR)*.d *~ $(LIB)
+
+tar:
+	-tar -cvf ../POEMS.tar $(FILES)
diff --git a/lib/poems/Makefile.lammps b/lib/poems/Makefile.lammps
new file mode 100644
index 0000000000..3d33366081
--- /dev/null
+++ b/lib/poems/Makefile.lammps
@@ -0,0 +1,5 @@
+# Settings that the LAMMPS build will import when this package library is used
+
+poems_SYSINC =
+poems_SYSLIB =
+poems_SYSPATH =
diff --git a/lib/voronoi/Makefile.32-bit b/lib/voronoi/Makefile.32-bit
new file mode 100644
index 0000000000..555948105b
--- /dev/null
+++ b/lib/voronoi/Makefile.32-bit
@@ -0,0 +1,72 @@
+# library build -*- makefile -*- for voro++ library
+
+# ------ SETTINGS ------
+
+CXX =		g++ -m32
+CXXFLAGS =	-O2 -march=i686 -mtune=generic -mfpmath=387 -mpc64	\
+		-fno-rtti -fno-exceptions -finline-functions		\
+                -ffast-math -funroll-loops -fstrict-aliasing		\
+                -Wall -W -Wno-uninitialized
+ARCHIVE =	ar
+ARCHFLAG =	-rscv
+SHELL =		/bin/sh
+
+# ------ DEFINITIONS ------
+
+SRC =	src/cell.cc src/c_loops.cc src/common.cc src/container.cc	\
+	src/container_prd.cc src/pre_container.cc src/unitcell.cc	\
+	src/v_base.cc src/v_compute.cc src/wall.cc
+
+DIR = Obj_32-bit/
+LIB = $(DIR)libvoronoi.a
+OBJ = $(SRC:src/%.cc=$(DIR)%.o)
+
+# ------ MAKE PROCEDURE ------
+
+default: $(DIR) $(LIB) $(EXE)
+
+$(DIR):
+	mkdir $(DIR)
+
+$(LIB): $(DIR)	$(OBJ)
+	$(ARCHIVE) $(ARFLAGS) $(LIB) $(OBJ)
+
+# ------ CLEAN ------
+
+clean:
+	-rm $(DIR)*.o *~ $(LIB)
+	-rmdir $(DIR)
+
+# ------ MAKE FLAGS ------
+
+.SUFFIXES:
+.SUFFIXES: .cc .o
+
+.PHONY: default clean
+
+# ------ COMPILE RULES ------
+
+$(DIR)%.o: src/%.cc
+	$(CXX) $(CXXFLAGS) -c $< -o $@
+
+# ------ DEPENDENCIES ------
+
+$(DIR)cell.o: src/cell.cc src/config.hh src/common.hh src/cell.hh
+$(DIR)c_loops.o: src/c_loops.cc src/c_loops.hh src/config.hh
+$(DIR)common.o: src/common.cc src/common.hh src/config.hh
+$(DIR)container.o: src/container.cc src/container.hh src/config.hh \
+ src/common.hh src/v_base.hh src/worklist.hh src/cell.hh src/c_loops.hh \
+ src/v_compute.hh src/rad_option.hh
+$(DIR)container_prd.o: src/container_prd.cc src/container_prd.hh src/config.hh \
+ src/common.hh src/v_base.hh src/worklist.hh src/cell.hh src/c_loops.hh \
+ src/v_compute.hh src/unitcell.hh src/rad_option.hh
+$(DIR)pre_container.o: src/pre_container.cc src/config.hh src/pre_container.hh \
+ src/c_loops.hh src/container.hh src/common.hh src/v_base.hh \
+ src/worklist.hh src/cell.hh src/v_compute.hh src/rad_option.hh
+$(DIR)unitcell.o: src/unitcell.cc src/unitcell.hh src/config.hh src/cell.hh \
+ src/common.hh
+$(DIR)v_base.o: src/v_base.cc src/v_base.hh src/worklist.hh src/config.hh \
+ src/v_base_wl.cc
+$(DIR)wall.o: src/wall.cc src/wall.hh src/cell.hh src/config.hh src/common.hh \
+ src/container.hh src/v_base.hh src/worklist.hh src/c_loops.hh \
+ src/v_compute.hh src/rad_option.hh
diff --git a/src/STUBS/Makefile.32-bit b/src/STUBS/Makefile.32-bit
new file mode 100644
index 0000000000..065161419c
--- /dev/null
+++ b/src/STUBS/Makefile.32-bit
@@ -0,0 +1,40 @@
+# Makefile for MPI stubs - edit this for your platform
+
+SHELL = /bin/sh
+.IGNORE:
+
+# Files
+
+SRC =		mpi.c
+INC =		mpi.h
+
+# Definitions
+
+EXE =		libmpi_32-bit.a
+OBJ = 		$(SRC:%.c=%_32-bit.o)
+
+# System-specific settings
+
+CC =	        gcc -m32
+CCFLAGS =	-O2 -Wall -march=i686 -mtune=generic -mfpmath=387 -mpc64
+ARCHIVE =	ar
+ARCHFLAG =	rs
+
+# Target
+
+$(EXE):	$(OBJ)
+	$(ARCHIVE) $(ARCHFLAG) $(EXE) $(OBJ)
+
+# Clean
+
+clean:
+	rm *.o libmpi.a $(EXE) $(OBJ)
+
+# Compilation rules
+
+%_32-bit.o: %.c
+	$(CC) $(CCFLAGS) -c $< -o $@
+
+# Individual dependencies
+
+$(OBJ):	$(INC)