diff --git a/src/config/hypre_macros_misc.m4 b/src/config/hypre_macros_misc.m4
index 2b9b19c92..14319b509 100644
--- a/src/config/hypre_macros_misc.m4
+++ b/src/config/hypre_macros_misc.m4
@@ -98,7 +98,7 @@ AC_DEFUN([AC_HYPRE_OPTIMIZATION_FLAGS],
 
 if test "x${hypre_user_chose_cflags}" = "xno"
 then
-   case "${CC}" in
+   case `basename "${CC}"` in
       gcc|mpigcc|mpicc)
         CFLAGS="-O2"
         if test "$hypre_using_openmp" = "yes" ; then
@@ -138,7 +138,7 @@ fi
 
 if test "x${hypre_user_chose_cxxflags}" = "xno"
 then
-   case "${CXX}" in
+   case `basename "${CXX}"` in
       g++|gCC|mpig++|mpicxx|mpic++|mpiCC)
         CXXFLAGS="-O2"
         if test "$hypre_using_openmp" = "yes" ; then
@@ -174,7 +174,7 @@ fi
 
 if test "x${hypre_user_chose_fflags}" = "xno"
 then
-   case "${FC}" in
+   case `basename "${FC}"` in
       g77|gfortran|mpigfortran|mpif77)
         FFLAGS="-O2"
         if test "$hypre_using_openmp" = "yes" ; then
@@ -218,7 +218,7 @@ AC_DEFUN([AC_HYPRE_DEBUG_FLAGS],
 
 if test "x${hypre_user_chose_cflags}" = "xno"
 then
-   case "${CC}" in
+   case `basename "${CC}"` in
       gcc|mpigcc|mpicc)
         CFLAGS="-g -Wall"
         if test "$hypre_using_openmp" = "yes" ; then
@@ -258,7 +258,7 @@ fi
 
 if test "x${hypre_user_chose_cxxflags}" = "xno"
 then
-   case "${CXX}" in
+   case `basename "${CXX}"` in
       g++|gCC|mpig++|mpicxx|mpic++|mpiCC)
         CXXFLAGS="-g -Wall"
         if test "$hypre_using_openmp" = "yes" ; then
@@ -294,7 +294,7 @@ fi
 
 if test "x${hypre_user_chose_fflags}" = "xno"
 then
-   case "${FC}" in
+   case `basename "${FC}"` in
       g77|gfortran|mpigfortran|mpif77)
         FFLAGS="-g -Wall"
         if test "$hypre_using_openmp" = "yes" ; then
diff --git a/src/configure b/src/configure
index dd7555b10..696b41132 100755
--- a/src/configure
+++ b/src/configure
@@ -7765,7 +7765,7 @@ then
 
 if test "x${hypre_user_chose_cflags}" = "xno"
 then
-   case "${CC}" in
+   case `basename "${CC}"` in
       gcc|mpigcc|mpicc)
         CFLAGS="-g -Wall"
         if test "$hypre_using_openmp" = "yes" ; then
@@ -7805,7 +7805,7 @@ fi
 
 if test "x${hypre_user_chose_cxxflags}" = "xno"
 then
-   case "${CXX}" in
+   case `basename "${CXX}"` in
       g++|gCC|mpig++|mpicxx|mpic++|mpiCC)
         CXXFLAGS="-g -Wall"
         if test "$hypre_using_openmp" = "yes" ; then
@@ -7841,7 +7841,7 @@ fi
 
 if test "x${hypre_user_chose_fflags}" = "xno"
 then
-   case "${FC}" in
+   case `basename "${FC}"` in
       g77|gfortran|mpigfortran|mpif77)
         FFLAGS="-g -Wall"
         if test "$hypre_using_openmp" = "yes" ; then
@@ -7881,7 +7881,7 @@ else
 
 if test "x${hypre_user_chose_cflags}" = "xno"
 then
-   case "${CC}" in
+   case `basename "${CC}"` in
       gcc|mpigcc|mpicc)
         CFLAGS="-O2"
         if test "$hypre_using_openmp" = "yes" ; then
@@ -7921,7 +7921,7 @@ fi
 
 if test "x${hypre_user_chose_cxxflags}" = "xno"
 then
-   case "${CXX}" in
+   case `basename "${CXX}"` in
       g++|gCC|mpig++|mpicxx|mpic++|mpiCC)
         CXXFLAGS="-O2"
         if test "$hypre_using_openmp" = "yes" ; then
@@ -7957,7 +7957,7 @@ fi
 
 if test "x${hypre_user_chose_fflags}" = "xno"
 then
-   case "${FC}" in
+   case `basename "${FC}"` in
       g77|gfortran|mpigfortran|mpif77)
         FFLAGS="-O2"
         if test "$hypre_using_openmp" = "yes" ; then