Make all tools that use llvmdo have a -topdir option that allows the top

source dir for LLVM to be specified explicitly. This removes the dependency
on the llvm-config script. If the option is not given, then the scripts use
llvm-config which should be both built and in the PATH. This arrangement
provides a useful default for most developers but also allows the nightly
tester to execute countloc.sh before llvm-config is built and without
altering the PATH.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29663 91177308-0d34-0410-b5e6-96231b3b80d8

utils/llvmgrep

@@ -18,7 +18,15 @@
 # details.
 ##===----------------------------------------------------------------------===##
 
-TOPDIR=`llvm-config --src-root`
+if test $# -gt 1 ; then
+  if test "$1" = "-topdir" ; then
+    TOPDIR="$2"
+    shift; shift;
+  else
+    TOPDIR=`llvm-config --src-root`
+  fi
+fi
+
 if test -d "$TOPDIR" ; then
   cd $TOPDIR
   case `uname -s` in
@@ -26,7 +34,8 @@ if test -d "$TOPDIR" ; then
     Linux) grep_cmd="egrep -H -n" ;;
     *) grep_cmd="egrep -l -n" ;;
   esac
-  ./utils/llvmdo -dirs "include lib tools utils docs examples test projects" $grep_cmd "$*"
+  ./utils/llvmdo -topdir "$TOPDIR" \
+    -dirs "include lib tools utils docs examples test projects" $grep_cmd "$*"
 else
-  echo "Can't find LLVM top directory in $TOPDIR"
+  echo "Can't find LLVM top directory"
 fi