diff --git a/src/sys/classes/viewer/impls/socket/matlab/makefile b/src/sys/classes/viewer/impls/socket/matlab/makefile
index d987977..c62bb30 100644
--- a/src/sys/classes/viewer/impls/socket/matlab/makefile
+++ b/src/sys/classes/viewer/impls/socket/matlab/makefile
@@ -26,22 +26,22 @@ include ${PETSC_DIR}/lib/petsc/conf/rules
 include ${PETSC_DIR}/lib/petsc/conf/test
 
 sread:
-	-@${MATLAB_MEX}  -g GCC='${CC}' CC='${PCC}' CFLAGS='${COPTFLAGS} ${CC_FLAGS} ${CCPPFLAGS}' LDFLAGS='${PETSC_EXTERNAL_LIB_BASIC}' sread.c bread.c
+	-@${MATLAB_MEX} -g ${PETSC_CC_INCLUDES} -L${PETSC_DIR}/${PETSC_ARCH}/lib ${PETSC_LIB_BASIC} sread.c bread.c
 	-@${RM} -f sread.o bread.o
 	-@${MV} sread.mex* ${PETSC_DIR}/${PETSC_ARCH}/lib/petsc/matlab
 
 swrite:
-	-@${MATLAB_MEX} -g GCC='${CC}' CC='${PCC}' CFLAGS='${COPTFLAGS} ${CC_FLAGS} ${CCPPFLAGS}' LDFLAGS='${PETSC_EXTERNAL_LIB_BASIC}' swrite.c bread.c
+	-@${MATLAB_MEX} -g ${PETSC_CC_INCLUDES} -L${PETSC_DIR}/${PETSC_ARCH}/lib ${PETSC_LIB_BASIC} swrite.c bread.c
 	-@${RM} -f swrite.o bread.o
 	-@${MV} swrite.mex* ${PETSC_DIR}/${PETSC_ARCH}/lib/petsc/matlab
 
 sopen:
-	-@${MATLAB_MEX} -g GCC='${CC}' CC='${PCC}' CFLAGS='${COPTFLAGS} ${CC_FLAGS} ${CCPPFLAGS} ${PCC_FLAGS}' LDFLAGS='${PETSC_EXTERNAL_LIB_BASIC}' sopen.c
+	-@${MATLAB_MEX} -g ${PETSC_CC_INCLUDES} -L${PETSC_DIR}/${PETSC_ARCH}/lib ${PETSC_LIB_BASIC} sopen.c
 	-@${RM} -f sopen.o
 	-@${MV} sopen.mex* ${PETSC_DIR}/${PETSC_ARCH}/lib/petsc/matlab
 
 sclose:
-	-@${MATLAB_MEX} -g GCC='${CC}' CC='${PCC}' CFLAGS='${COPTFLAGS} ${CC_FLAGS} ${CCPPFLAGS} ${PCC_FLAGS}' LDFLAGS='${PETSC_EXTERNAL_LIB_BASIC}' sclose.c
+	-@${MATLAB_MEX} -g ${PETSC_CC_INCLUDES} -L${PETSC_DIR}/${PETSC_ARCH}/lib ${PETSC_LIB_BASIC} sclose.c
 	-@${RM} -f sclose.o
 	-@${MV} sclose.mex* ${PETSC_DIR}/${PETSC_ARCH}/lib/petsc/matlab