diff --git a/lib/gpu/Makefile.mingw32-cross b/lib/gpu/Makefile.mingw32-cross
index c0f9d4aad7..6f77634755 100644
--- a/lib/gpu/Makefile.mingw32-cross
+++ b/lib/gpu/Makefile.mingw32-cross
@@ -3,7 +3,7 @@ CUDA_HOME = ../../tools/mingw-cross/OpenCL
 OCL_CPP = i686-w64-mingw32-g++ -O2 -march=i686 -mtune=generic -mfpmath=387 \
         -mpc64 -DMPI_GERYON -DUCL_NO_EXIT -I../../src/STUBS \
         -I$(CUDA_HOME)/include
-OCL_LINK = -Wl,--enable-stdcall-fixup -L$(CUDA_HOME)/../Obj_mingw32 -Wl,-Bdynamic,-lOpenCL,-Bstatic -L../../src/STUBS -lmpi_mingw32
+OCL_LINK = -static -Wl,--enable-stdcall-fixup -L$(CUDA_HOME)/../Obj_mingw32 -Wl,-Bdynamic,-lOpenCL,-Bstatic -L../../src/STUBS -lmpi_mingw32
 OCL_PREC = -D_SINGLE_DOUBLE
 OCL_TUNE = -DFERMI_OCL
 EXTRAMAKE = Makefile.lammps.mingw-cross
diff --git a/lib/gpu/Makefile.mingw32-cross-mpi b/lib/gpu/Makefile.mingw32-cross-mpi
index 85da481392..94099cd90b 100644
--- a/lib/gpu/Makefile.mingw32-cross-mpi
+++ b/lib/gpu/Makefile.mingw32-cross-mpi
@@ -4,7 +4,7 @@ OCL_CPP = i686-w64-mingw32-g++ -O2 -march=i686 -mtune=generic -mfpmath=387 \
         -mpc64 -DMPI_GERYON -DUCL_NO_EXIT -I$(CUDA_HOME)/include \
 	-I../../tools/mingw-cross/mpich2-win32/include/ \
         -DMPICH_IGNORE_CXX_SEEK
-OCL_LINK = -Wl,--enable-stdcall-fixup -L$(CUDA_HOME)/../Obj_mingw32 -Wl,-Bdynamic,-lOpenCL,-Bstatic \
+OCL_LINK = -static -Wl,--enable-stdcall-fixup -L$(CUDA_HOME)/../Obj_mingw32 -Wl,-Bdynamic,-lOpenCL,-Bstatic \
 	-L../../tools/mingw-cross/mpich2-win32/lib -lmpi
 OCL_PREC = -D_SINGLE_DOUBLE
 OCL_TUNE = -DFERMI_OCL
diff --git a/lib/gpu/Makefile.mingw64-cross b/lib/gpu/Makefile.mingw64-cross
index c65e8a9a5f..54f6af8c65 100644
--- a/lib/gpu/Makefile.mingw64-cross
+++ b/lib/gpu/Makefile.mingw64-cross
@@ -3,7 +3,7 @@ CUDA_HOME = ../../tools/mingw-cross/OpenCL
 OCL_CPP = x86_64-w64-mingw32-g++ -O3 -march=core2 -mtune=core2 -mpc64 \
 	-msse2 -DMPI_GERYON -DUCL_NO_EXIT -I../../src/STUBS \
         -I$(CUDA_HOME)/include
-OCL_LINK = -Wl,--enable-stdcall-fixup -L$(CUDA_HOME)/../Obj_mingw64 -Wl,-Bdynamic,-lOpenCL,-Bstatic \
+OCL_LINK = -static -Wl,--enable-stdcall-fixup -L$(CUDA_HOME)/../Obj_mingw64 -Wl,-Bdynamic,-lOpenCL,-Bstatic \
 	-L../../src/STUBS -lmpi_mingw64
 OCL_PREC = -D_SINGLE_DOUBLE
 OCL_TUNE = -DFERMI_OCL
diff --git a/lib/gpu/Makefile.mingw64-cross-mpi b/lib/gpu/Makefile.mingw64-cross-mpi
index 3cd1d7f8fe..2ff72d98b1 100644
--- a/lib/gpu/Makefile.mingw64-cross-mpi
+++ b/lib/gpu/Makefile.mingw64-cross-mpi
@@ -5,7 +5,7 @@ OCL_CPP = x86_64-w64-mingw32-g++ -O3 -march=core2 -mtune=core2 -mpc64 \
 	-I../../tools/mingw-cross/mpich2-win64/include/ \
         -DMPICH_IGNORE_CXX_SEEK
  
-OCL_LINK = -Wl,--enable-stdcall-fixup -L$(CUDA_HOME)/../Obj_mingw64 -Wl,-Bdynamic,-lOpenCL,-Bstatic \
+OCL_LINK = -static -Wl,--enable-stdcall-fixup -L$(CUDA_HOME)/../Obj_mingw64 -Wl,-Bdynamic,-lOpenCL,-Bstatic \
 	-L../../tools/mingw-cross/mpich2-win64/lib -lmpi
 OCL_PREC = -D_SINGLE_DOUBLE
 OCL_TUNE = -DFERMI_OCL
diff --git a/tools/colvars/Makefile b/tools/colvars/Makefile
index a1f1b4c4b0..9131555389 100644
--- a/tools/colvars/Makefile
+++ b/tools/colvars/Makefile
@@ -3,6 +3,7 @@ SHELL=/bin/sh
 # adjust as needed
 CXX=g++
 CXXFLAGS=-Wall -O2
+LDFLAGS=
 # set to .exe for windows
 EXT=
 #########################
@@ -13,7 +14,7 @@ clean:
 	-rm *~ *.o abf_integrate$(EXT) *.exe
 
 abf_integrate$(EXT): abf_integrate.o abf_data.o
-	$(CXX) -o $@ $(CXXFLAGS) $^
+	$(CXX) $(LDFLAGS) -o $@ $(CXXFLAGS) $^
 
 %.o: %.cpp
 	$(CXX) -o $@ -c $(CXXFLAGS) $<
diff --git a/tools/mingw-cross/build-mingw-cross.sh b/tools/mingw-cross/build-mingw-cross.sh
index 91fa82fc7f..fa2ac01aa5 100755
--- a/tools/mingw-cross/build-mingw-cross.sh
+++ b/tools/mingw-cross/build-mingw-cross.sh
@@ -81,34 +81,34 @@ TOOLDIR=lammps-current/tools
 MINGW32FLAGS="-DLAMMPS_SMALLSMALL -O2 -march=i686  -mtune=generic -mfpmath=387 -mpc64 "
 MINGW64FLAGS="-DLAMMPS_SMALLBIG   -O2 -march=core2 -mtune=core2   -mpc64 -msse2"
 
-i686-w64-mingw32-g++   ${MINGW32FLAGS} -o mingw32/restart2data.exe ${TOOLDIR}/restart2data.cpp
-x86_64-w64-mingw32-g++ ${MINGW64FLAGS} -o mingw64/restart2data.exe ${TOOLDIR}/restart2data.cpp
+i686-w64-mingw32-g++   ${MINGW32FLAGS} -static -o mingw32/restart2data.exe ${TOOLDIR}/restart2data.cpp
+x86_64-w64-mingw32-g++ ${MINGW64FLAGS} -static -o mingw64/restart2data.exe ${TOOLDIR}/restart2data.cpp
 
-i686-w64-mingw32-g++   ${MINGW32FLAGS} -o mingw32/binary2txt.exe ${TOOLDIR}/binary2txt.cpp
-x86_64-w64-mingw32-g++ ${MINGW64FLAGS} -o mingw64/binary2txt.exe ${TOOLDIR}/binary2txt.cpp
+i686-w64-mingw32-g++   ${MINGW32FLAGS} -static -o mingw32/binary2txt.exe ${TOOLDIR}/binary2txt.cpp
+x86_64-w64-mingw32-g++ ${MINGW64FLAGS} -static -o mingw64/binary2txt.exe ${TOOLDIR}/binary2txt.cpp
 
-i686-w64-mingw32-gfortran   ${MINGW32FLAGS} -o mingw32/chain.exe ${TOOLDIR}/chain.f
-x86_64-w64-mingw32-gfortran ${MINGW64FLAGS} -o mingw64/chain.exe ${TOOLDIR}/chain.f
+i686-w64-mingw32-gfortran   ${MINGW32FLAGS} -static -o mingw32/chain.exe ${TOOLDIR}/chain.f -lquadmath
+x86_64-w64-mingw32-gfortran ${MINGW64FLAGS} -static -o mingw64/chain.exe ${TOOLDIR}/chain.f -lquadmath
 
-i686-w64-mingw32-gfortran   ${MINGW32FLAGS} -o mingw32/createatoms.exe \
-	${TOOLDIR}/createatoms/createAtoms.f
-x86_64-w64-mingw32-gfortran ${MINGW64FLAGS} -o mingw64/createatoms.exe \
-	${TOOLDIR}/createatoms/createAtoms.f
+i686-w64-mingw32-gfortran   ${MINGW32FLAGS} -static -o mingw32/createatoms.exe \
+	${TOOLDIR}/createatoms/createAtoms.f -lquadmath
+x86_64-w64-mingw32-gfortran ${MINGW64FLAGS} -static -o mingw64/createatoms.exe \
+	${TOOLDIR}/createatoms/createAtoms.f -lquadmath
 
 make -C ${TOOLDIR}/msi2lmp/src TARGET=${PWD}/mingw32/msi2lmp.exe \
 	CC=i686-w64-mingw32-gcc CFLAGS="${MINGW32FLAGS}" clean
 make -C ${TOOLDIR}/msi2lmp/src TARGET=${PWD}/mingw32/msi2lmp.exe \
-	CC=i686-w64-mingw32-gcc CFLAGS="${MINGW32FLAGS}"
+	CC=i686-w64-mingw32-gcc CFLAGS="${MINGW32FLAGS}" LDFLAGS=-static
 make -C ${TOOLDIR}/msi2lmp/src TARGET=${PWD}/mingw64/msi2lmp.exe \
 	CC=x86_64-w64-mingw32-gcc CFLAGS="${MINGW64FLAGS}" clean
 make -C ${TOOLDIR}/msi2lmp/src TARGET=${PWD}/mingw64/msi2lmp.exe \
-	CC=x86_64-w64-mingw32-gcc CFLAGS="${MINGW64FLAGS}"
+	CC=x86_64-w64-mingw32-gcc CFLAGS="${MINGW64FLAGS}" LDFLAGS=-static
 
 make -C ${TOOLDIR}/colvars EXT=.exe clean
-make -C ${TOOLDIR}/colvars EXT=.exe CXX=i686-w64-mingw32-g++ CXXFLAGS="${MINGW32FLAGS}"
+make -C ${TOOLDIR}/colvars EXT=.exe CXX=i686-w64-mingw32-g++ CXXFLAGS="${MINGW32FLAGS}" LDFLAGS=-static
 cp ${TOOLDIR}/colvars/*.exe ${PWD}/mingw32/
 make -C ${TOOLDIR}/colvars EXT=.exe clean
-make -C ${TOOLDIR}/colvars EXT=.exe CXX=x86_64-w64-mingw32-g++ CXXFLAGS="${MINGW64FLAGS}"
+make -C ${TOOLDIR}/colvars EXT=.exe CXX=x86_64-w64-mingw32-g++ CXXFLAGS="${MINGW64FLAGS}" LDFLAGS=-static
 cp ${TOOLDIR}/colvars/*.exe ${PWD}/mingw64/
 
 # assemble and customize installer scripts 
diff --git a/tools/msi2lmp/src/Makefile b/tools/msi2lmp/src/Makefile
index 26ced8c31a..b7d3b6668d 100644
--- a/tools/msi2lmp/src/Makefile
+++ b/tools/msi2lmp/src/Makefile
@@ -18,13 +18,14 @@ HEADERS  = msi2lmp.h Forcefield.h
 
 CC       = gcc
 CFLAGS   = -O -Wall -W -g 
+LDFLAGS  =
 FRCFILE  = cvff.frc
 FRCFILE2 = cff91.frc
 README   = README
 MKFILE   = Makefile
 
 $(TARGET) : $(OBJS)
-	$(CC) $(CFLAGS) -o $(TARGET) $(OBJS) -lm
+	$(CC) $(LDFLAGS) $(CFLAGS) -o $(TARGET) $(OBJS) -lm
 
 .c.o:
 	$(CC) $(CFLAGS) -c $<