MIPS: Enabled native/cross-compilation for MIPS targets in the gyp system.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 8201e2c036af9d0a42ca3b679717aa20cf151984..548df7bdad2ffee2d4933ebccc16e02d55e940ab 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -169,6 +169,28 @@
               'V8_TARGET_ARCH_MIPS',
             ],
             'conditions': [
+              [ 'target_arch=="mips"', {
+                'target_conditions': [
+                  ['_toolset=="target"', {
+                    'cflags': ['-EL'],
+                    'ldflags': ['-EL'],
+                    'conditions': [
+                      [ 'v8_use_mips_abi_hardfloat=="true"', {
+                        'cflags': ['-mhard-float'],
+                        'ldflags': ['-mhard-float'],
+                      }, {
+                        'cflags': ['-msoft-float'],
+                        'ldflags': ['-msoft-float'],
+                      }],
+                      ['mips_arch_variant=="mips32r2"', {
+                        'cflags': ['-mips32r2', '-Wa,-mips32r2'],
+                      }, {
+                        'cflags': ['-mips32', '-Wa,-mips32'],
+                      }],
+                    ],
+                  }],
+                ],
+              }],
               [ 'v8_can_use_fpu_instructions=="true"', {
                 'defines': [
                   'CAN_USE_FPU_INSTRUCTIONS',
@@ -184,6 +206,9 @@
                   '__mips_soft_float=1'
                 ],
               }],
+              ['mips_arch_variant=="mips32r2"', {

[Jakob Kummerow, 2012/02/08 13:07:34]

This works for now, but it's a bit brittle: it forces you to specify some value
for mips_arch_variant whenever v8_target_arch=="mips", or gyp will fail. I'd
suggest to add a default value to the top of this file (see the other examples
there for the %-notation).

+                'defines': ['_MIPS_ARCH_MIPS32R2',],
+              }],
               # The MIPS assembler assumes the host is 32 bits,
               # so force building 32-bit host tools.
               ['host_arch=="x64"', {