Simplifies standalone VM Android build.

tools/gyp/configurations_make.gypi

 # Copyright (c) 2011, 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.
 
 {
   'variables': {
-    'arm_cross_libc%': '/opt/codesourcery/arm-2009q1/arm-none-linux-gnueabi/libc',
     'dart_debug_optimization_level%': '2',
   },
   'target_defaults': {
     'configurations': {
-      'Dart_Base': {
+      'Dart_Linux_Base': {
         'abstract': 1,
         'cflags': [
           '-Werror',
           '<@(common_gcc_warning_flags)',
           '-Wnon-virtual-dtor',
           '-Wvla',
           '-Wno-conversion-null',
           '-Woverloaded-virtual',
           '-g3',
           '-ggdb3',
           # TODO(iposva): Figure out if we need to pass anything else.
           #'-ansi',
           '-fno-rtti',
           '-fno-exceptions',
           # '-fvisibility=hidden',
           # '-fvisibility-inlines-hidden',
         ],
       },
 
-      'Dart_ia32_Base': {
+      'Dart_Linux_ia32_Base': {
+        'abstract': 1,
         'cflags': [ '-m32', '-msse2' ],
         'ldflags': [ '-m32', ],
       },
 
-      'Dart_x64_Base': {
+      'Dart_Linux_x64_Base': {
+        'abstract': 1,
         'cflags': [ '-m64', '-msse2' ],
         'ldflags': [ '-m64', ],
       },
 
-      'Dart_simarm_Base': {
+      'Dart_Linux_simarm_Base': {
+        'abstract': 1,
         'cflags': [ '-O3', '-m32', '-msse2' ],
         'ldflags': [ '-m32', ],
         'defines': [
           'ARM_FLOAT_ABI_HARD',
         ],
       },
 
-      'Dart_arm_Base': {
+      'Dart_Linux_arm_Base': {
+        'abstract': 1,
         'target_conditions': [
         ['_toolset=="target"', {
           'cflags': [
             '-marm',
             '-march=armv7-a',
             '-mfpu=vfp',
             '-Wno-psabi', # suppresses va_list warning
             '-fno-strict-overflow',
           ],
           'defines': [
             # In build.py, we specify the hf compiler.
             'ARM_FLOAT_ABI_HARD',
           ],
         }],
         ['_toolset=="host"', {
           'cflags': ['-m32', '-msse2'],
           'ldflags': ['-m32'],
         }]]
       },
 
-      'Dart_simmips_Base': {
+      'Dart_Linux_simmips_Base': {
+        'abstract': 1,
         'cflags': [ '-O3', '-m32', '-msse2' ],
         'ldflags': [ '-m32', ],
       },
 
-      'Dart_mips_Base': {
+      'Dart_Linux_mips_Base': {
+        'abstract': 1,
         'target_conditions': [
           ['_toolset=="target"', {
             'cflags': [
               '-march=mips32',
               '-mhard-float',
               '-fno-strict-overflow',
             ],
           }],
           ['_toolset=="host"',{
             'cflags': [ '-O3', '-m32', '-msse2' ],
             'ldflags': [ '-m32' ],
         }]]
       },
 
-      'Dart_Debug': {
+      'Dart_Linux_Debug': {
+        'abstract': 1,
         'cflags': [
           '-O<(dart_debug_optimization_level)',
           # The sampling profiler uses the frame pointer to walk the stack.
           '-fno-omit-frame-pointer',
           # Clang on Linux will still omit frame pointers from leaf functions
           # unless told otherwise:
           # '-mno-omit-leaf-frame-pointer',
         ],
       },
 
-      'Dart_Release': {
+      'Dart_Linux_Release': {
+        'abstract': 1,
         'cflags': [
           '-O3',
           # The sampling profiler uses the frame pointer to walk the stack.
           '-fno-omit-frame-pointer',
           # Clang on Linux will still omit frame pointers from leaf functions
           # unless told otherwise:
           # '-mno-omit-leaf-frame-pointer',
         ],
       },
     },
   },
 }