- Start to distinguish between cross-build and native build environments.

tools/gyp/configurations_make.gypi

Index: tools/gyp/configurations_make.gypi
===================================================================
--- tools/gyp/configurations_make.gypi	(revision 33445)
+++ tools/gyp/configurations_make.gypi	(working copy)
@@ -76,7 +76,8 @@
         'ldflags': [ '-m32', ],
       },
 
-      'Dart_Linux_mips_Base': {
+      # MIPS cross-build
+      'Dart_Linux_xmips_Base': {
         'abstract': 1,
         'target_conditions': [
           ['_toolset=="target"', {
@@ -92,6 +93,16 @@
         }]]
       },
 
+      # MIPS native build
+      'Dart_Linux_mips_Base': {
+        'abstract': 1,
+        'cflags': [
+          '-march=mips32',
+          '-mhard-float',
+          '-fno-strict-overflow',
+        ],
+      },
+
       'Dart_Linux_Debug': {
         'abstract': 1,
         'cflags': [