sdk/dart now detects an available build

sdk/bin/dart

 #!/bin/bash
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 function follow_links() {
   file="$1"
   while [ -h "$file" ]; do
     # On Mac OS, readlink -f doesn't work.
     file="$(readlink "$file")"
   done
   echo "$file"
 }
 
 # Unlike $0, $BASH_SOURCE points to the absolute path of this file.
 PROG_NAME="$(follow_links "$BASH_SOURCE")"
 
 # Handle the case where dart-sdk/bin has been symlinked to.
 CUR_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)"
 
+if [[ `uname` == 'Darwin' ]];
+then
+  OUT_DIR="$CUR_DIR"/../../xcodebuild/
+else
+  OUT_DIR="$CUR_DIR"/../../out/
+fi
+
 if [ -z "$DART_CONFIGURATION" ];
 then
-  DART_CONFIGURATION="ReleaseIA32"
+  DIRS=$( ls "$OUT_DIR" )
+  COUNT=$( echo $DIRS | wc -w )

[floitsch, 2015/08/12 11:26:08]

You can drop the COUNT part. It will just run through all possible
configurations.

[stanm, 2015/08/12 12:30:18]

Done.

+  if [ "$COUNT" -eq "0" ];
+  then
+    echo "There are no available dart configurations in $OUT_DIR"
+    exit 1
+  else
+    # list of possible configurations in decreasing desirability
+    CONFIGS=("ReleaseIA32" "ReleaseX64"
+      "ReleaseARM"    "ReleaseARM64"    "ReleaseARMV5TE"    "ReleaseMIPS"
+      "ReleaseSIMARM" "ReleaseSIMARM64" "ReleaseSIMARMV5TE" "ReleaseSIMMIPS"

[floitsch, 2015/08/12 11:26:08]

Remove the simarm and simmips (simulated)

[stanm, 2015/08/12 12:30:18]

Done.

+      "DebugIA32"   "DebugX64"

[floitsch, 2015/08/12 11:26:08]

Put DebugIA32 and DebugX64 before the ARM ones.

[stanm, 2015/08/12 12:30:18]

Done.

+      "DebugARM"    "DebugARM64"    "DebugARMV5TE"    "DebugMIPS"
+      "DebugSIMARM" "DebugSIMARM64" "DebugSIMARMV5TE" "DebugSIMMIPS")
+    DART_CONFIGURATION="None"
+    for CONFIG in ${CONFIGS[*]}
+    do
+      for DIR in $DIRS;
+      do
+        if [ "$CONFIG" = "$DIR" ];
+        then
+          # choose most desirable configuration that is available and break
+          DART_CONFIGURATION=$DIR

[floitsch, 2015/08/12 11:26:08]

"$DIR"

[stanm, 2015/08/12 12:30:18]

Done.

+          break 2
+        fi
+      done
+    done
+    if [ "$DART_CONFIGURATION" = "None" ]
+    then
+      echo "None of the folders in $OUT_DIR contain a valid dart configuration"
+      exit 1
+    fi
+  fi
 fi
 
-if [[ `uname` == 'Darwin' ]];
-then
-  BIN_DIR="$CUR_DIR"/../../xcodebuild/$DART_CONFIGURATION
-else
-  BIN_DIR="$CUR_DIR"/../../out/$DART_CONFIGURATION
-fi
+BIN_DIR="$OUT_DIR$DART_CONFIGURATION"
 
 exec "$BIN_DIR"/dart "$@"