diff --git a/Osi/configure b/Osi/configure
index 3a25d2f8..732d5207 100755
--- a/Osi/configure
+++ b/Osi/configure
@@ -1977,7 +1977,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 # compiler, if the C++ is set, but the C compiler isn't (only for CXX=cl)
 if test x"$CXX" != x; then
   case "$CXX" in
-    clang* ) ;;
+    clang* | */clang* ) ;;
     cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
       if test x"$CC" = x; then
         CC="$CXX"
@@ -2798,7 +2798,7 @@ echo "$as_me: error: Failed to find a C compiler!" >&2;}
 fi
 # Autoconf incorrectly concludes that cl recognises -g. It doesn't.
 case "$CC" in
-  clang* ) ;;
+  clang* | */clang* ) ;;
   cl* | */cl* | CL* | */CL* )
     if test "$ac_cv_prog_cc_g" = yes ; then
       ac_cv_prog_cc_g=no
@@ -2816,7 +2816,7 @@ CFLAGS="$save_cflags"
 # add automake conditional so we can recognize cl compiler in makefile
 coin_cc_is_cl=false
 case "$CC" in
-  clang* ) ;;
+  clang* | */clang* ) ;;
   cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
     coin_cc_is_cl=true
     ;;
@@ -2862,7 +2862,7 @@ if test x"$CFLAGS" = x; then
     case $build in
       *-cygwin* | *-mingw*)
         case "$CC" in
-          clang* ) ;;
+          clang* | */clang* ) ;;
           cl* | */cl* | CL* | */CL*)
             if test "$coin_disable_shared" = yes || test "$enable_shared" = yes ; then
               coin_opt_cflags='-MD -O2'
@@ -3177,7 +3177,7 @@ fi
 
 # Correct the LD variable if we are using the MS or Intel-windows compiler
 case "$CC" in
-  clang* ) ;;
+  clang* | */clang* ) ;;
   cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
     LD=link
     ;;
@@ -3677,7 +3677,7 @@ fi
 
 # Autoconf incorrectly concludes that cl recognises -g. It doesn't.
 case "$CXX" in
-  clang* ) ;;
+  clang* | */clang* ) ;;
   cl* | */cl* | CL* | */CL* )
     if test "$ac_cv_prog_cxx_g" = yes ; then
       ac_cv_prog_cxx_g=no
@@ -3727,7 +3727,7 @@ if test x"$CXXFLAGS" = x; then
     case $build in
       *-cygwin* | *-mingw*)
         case "$CXX" in
-          clang* ) ;;
+          clang* | */clang* ) ;;
           cl* | */cl* | CL* | */CL*)
             # The MT and MTd options are mutually exclusive
             if test "$coin_disable_shared" = yes || test "$enable_shared" = yes ; then
@@ -4050,7 +4050,7 @@ fi
 
 # correct the LD variable in a build with MS or Intel-windows compiler
 case "$CXX" in
-  clang* ) ;;
+  clang* | */clang* ) ;;
   cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
     LD=link
     ;;
@@ -4086,7 +4086,7 @@ else
       coin_disable_shared=yes
       if test x"$enable_shared" = xyes; then
         case "$CC" in
-          clang* )
+          clang* | */clang* )
             { echo "$as_me:$LINENO: WARNING: Building of DLLs not supported in this configuration." >&5
 echo "$as_me: WARNING: Building of DLLs not supported in this configuration." >&2;}
             ;;
@@ -20285,7 +20285,7 @@ fi
     # sys_lib_search_path_spec
     *-cygwin* | *-mingw*)
        case "$CXX" in
-    clang* )
+    clang* | */clang* )
       # we assume that libtool patches for CLANG are the same as for GNU compiler - correct???
       { echo "$as_me:$LINENO: Applying patches to libtool for CLANG compiler" >&5
 echo "$as_me: Applying patches to libtool for CLANG compiler" >&6;}
@@ -20484,7 +20484,7 @@ if test "$dependency_linking" = auto; then
     case $build in
       *-cygwin* | *-mingw*)
         case "$CC" in
-          clang* )
+          clang* | */clang* )
             dependency_linking=yes
             ;;
           cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
@@ -25331,7 +25331,7 @@ echo "$as_me:$LINENO: checking which command should be used to link input files"
 echo $ECHO_N "checking which command should be used to link input files... $ECHO_C" >&6
 coin_link_input_cmd="$LN_S"
 case "$CC" in
-  clang* ) ;;
+  clang* | */clang* ) ;;
   cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
     coin_link_input_cmd=cp ;;
 esac
@@ -25345,7 +25345,7 @@ if test x$coin_skip_ac_output != xyes; then
   # library extension
 
   case "$CC" in
-    clang* )
+    clang* | */clang* )
          LIBEXT=a ;;
     cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
          LIBEXT=lib ;;
diff --git a/configure b/configure
index 214176d2..ee859336 100755
--- a/configure
+++ b/configure
@@ -1831,7 +1831,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 # compiler, if the C++ is set, but the C compiler isn't (only for CXX=cl)
 if test x"$CXX" != x; then
   case "$CXX" in
-    clang* ) ;;
+    clang* | */clang* ) ;;
     cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
       if test x"$CC" = x; then
         CC="$CXX"
@@ -2652,7 +2652,7 @@ echo "$as_me: error: Failed to find a C compiler!" >&2;}
 fi
 # Autoconf incorrectly concludes that cl recognises -g. It doesn't.
 case "$CC" in
-  clang* ) ;;
+  clang* | */clang* ) ;;
   cl* | */cl* | CL* | */CL* )
     if test "$ac_cv_prog_cc_g" = yes ; then
       ac_cv_prog_cc_g=no
@@ -2670,7 +2670,7 @@ CFLAGS="$save_cflags"
 # add automake conditional so we can recognize cl compiler in makefile
 coin_cc_is_cl=false
 case "$CC" in
-  clang* ) ;;
+  clang* | */clang* ) ;;
   cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
     coin_cc_is_cl=true
     ;;
@@ -2716,7 +2716,7 @@ if test x"$CFLAGS" = x; then
     case $build in
       *-cygwin* | *-mingw*)
         case "$CC" in
-          clang* ) ;;
+          clang* | */clang* ) ;;
           cl* | */cl* | CL* | */CL*)
             if test "$coin_disable_shared" = yes || test "$enable_shared" = yes ; then
               coin_opt_cflags='-MD -O2'
@@ -3031,7 +3031,7 @@ fi
 
 # Correct the LD variable if we are using the MS or Intel-windows compiler
 case "$CC" in
-  clang* ) ;;
+  clang* | */clang* ) ;;
   cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
     LD=link
     ;;
@@ -3533,7 +3533,7 @@ fi
 
 # Autoconf incorrectly concludes that cl recognises -g. It doesn't.
 case "$CXX" in
-  clang* ) ;;
+  clang* | */clang* ) ;;
   cl* | */cl* | CL* | */CL* )
     if test "$ac_cv_prog_cxx_g" = yes ; then
       ac_cv_prog_cxx_g=no
@@ -3583,7 +3583,7 @@ if test x"$CXXFLAGS" = x; then
     case $build in
       *-cygwin* | *-mingw*)
         case "$CXX" in
-          clang* ) ;;
+          clang* | */clang* ) ;;
           cl* | */cl* | CL* | */CL*)
             # The MT and MTd options are mutually exclusive
             if test "$coin_disable_shared" = yes || test "$enable_shared" = yes ; then
@@ -3906,7 +3906,7 @@ fi
 
 # correct the LD variable in a build with MS or Intel-windows compiler
 case "$CXX" in
-  clang* ) ;;
+  clang* | */clang* ) ;;
   cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
     LD=link
     ;;
@@ -4632,7 +4632,7 @@ else
       coin_disable_shared=yes
       if test x"$enable_shared" = xyes; then
         case "$CC" in
-          clang* )
+          clang* | */clang* )
             { echo "$as_me:$LINENO: WARNING: Building of DLLs not supported in this configuration." >&5
 echo "$as_me: WARNING: Building of DLLs not supported in this configuration." >&2;}
             ;;
@@ -20594,7 +20594,7 @@ fi
     # sys_lib_search_path_spec
     *-cygwin* | *-mingw*)
        case "$CXX" in
-    clang* )
+    clang* | */clang* )
       # we assume that libtool patches for CLANG are the same as for GNU compiler - correct???
       { echo "$as_me:$LINENO: Applying patches to libtool for CLANG compiler" >&5
 echo "$as_me: Applying patches to libtool for CLANG compiler" >&6;}
@@ -20793,7 +20793,7 @@ if test "$dependency_linking" = auto; then
     case $build in
       *-cygwin* | *-mingw*)
         case "$CC" in
-          clang* )
+          clang* | */clang* )
             dependency_linking=yes
             ;;
           cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
@@ -22086,7 +22086,7 @@ echo "$as_me:$LINENO: checking which command should be used to link input files"
 echo $ECHO_N "checking which command should be used to link input files... $ECHO_C" >&6
 coin_link_input_cmd="$LN_S"
 case "$CC" in
-  clang* ) ;;
+  clang* | */clang* ) ;;
   cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
     coin_link_input_cmd=cp ;;
 esac
@@ -22100,7 +22100,7 @@ if test x$coin_skip_ac_output != xyes; then
   # library extension
 
   case "$CC" in
-    clang* )
+    clang* | */clang* )
          LIBEXT=a ;;
     cl* | */cl* | CL* | */CL* | icl* | */icl* | ICL* | */ICL*)
          LIBEXT=lib ;;