MIPS: Initial gyp infrastructure for MIPS architecture.

build/standalone.gypi

Index: build/standalone.gypi
diff --git a/build/standalone.gypi b/build/standalone.gypi
index f24d9f834105cd758680c4099ef195929d62afe4..4297f5c84a0507dfdc8ae0cd0c2a06205e054e9d 100644
--- a/build/standalone.gypi
+++ b/build/standalone.gypi
@@ -42,7 +42,7 @@
               # else gets passed through, which probably won't work very well; such
               # hosts should pass an explicit target_arch to gyp.
               'host_arch%':
-                '<!(uname -m | sed -e "s/i.86/ia32/;s/x86_64/x64/;s/amd64/x64/;s/arm.*/arm/")',
+                '<!(uname -m | sed -e "s/i.86/ia32/;s/x86_64/x64/;s/amd64/x64/;s/arm.*/arm/;s/mips.*/mips/")',
             }, {  # OS!="linux" and OS!="freebsd" and OS!="openbsd"
               'host_arch%': 'ia32',
             }],
@@ -61,6 +61,7 @@
     'werror%': '-Werror',
     'conditions': [
       ['(v8_target_arch=="arm" and host_arch!="arm") or \
+        (v8_target_arch=="mips" and host_arch!="mips") or \
         (v8_target_arch=="x64" and host_arch!="x64")', {
         'want_separate_host_toolset': 1,
       }, {