Support clang without version suffix for coverage testing.

configure

@@ -199,15 +199,29 @@ case `$cc -v 2>&1` in
 esac
 
 if test "$clang" -eq 1; then
-  clangV=`echo "$cc" | sed -e 's/^.*-//'`
+  if test "$cc" = "clang"; then
-  if `llvm-cov-${clangV} --version > /dev/null`; then
+    if `llvm-cov --version > /dev/null`; then
-    GCOV="llvm-cov-${clangV}"
+      GCOV="llvm-cov-${clangV}"
+      LLVM_GCOV_FLAG="gcov"
+    else
+      cover=0
+      LLVM_GCOV_FLAG=""
+      echo "Deactivating cover as no suitable gcov can be found"
+    fi
+    GCOV="llvm-cov"
     LLVM_GCOV_FLAG="gcov"
     echo "Using ${GCOV} for coverage"
   else
-    cover=0
+    clangV=`echo "$cc" | sed -e 's/^.*-//'`
-    LLVM_GCOV_FLAG=""
+    if `llvm-cov-${clangV} --version > /dev/null`; then
-    echo "Deactivating cover as no suitable gcov can be found"
+      GCOV="llvm-cov-${clangV}"
+      LLVM_GCOV_FLAG="gcov"
+      echo "Using ${GCOV} for coverage"
+    else
+      cover=0
+      LLVM_GCOV_FLAG=""
+      echo "Deactivating cover as no suitable gcov can be found"
+    fi
   fi
 fi