Ability to force position-independent code generation.

build/toolchain.gypi

Index: build/toolchain.gypi
diff --git a/build/toolchain.gypi b/build/toolchain.gypi
index a9958ce8d66b2cc879ca08d5e30681501cc5c023..54bfdef92c9122898e8ab77e8053d9fe490d641b 100644
--- a/build/toolchain.gypi
+++ b/build/toolchain.gypi
@@ -66,6 +66,10 @@
     # Some versions of GCC 4.5 seem to need -fno-strict-aliasing.
     'v8_no_strict_aliasing%': 0,
 
+    # When you are statically embedding V8 into a shared library, you might
+    # need to force position-independent code generation.
+    'v8_force_pic%': 0,
+
     # Chrome needs this definition unconditionally. For standalone V8 builds,
     # it's handled in build/standalone.gypi.
     'want_separate_host_toolset%': 1,
@@ -423,6 +427,9 @@
           [ 'v8_no_strict_aliasing==1', {
             'cflags': [ '-fno-strict-aliasing' ],
           }],
+          [ 'v8_force_pic==1', {
+            'cflags': [ '-fPIC' ],
+          }],
         ],  # conditions
       }],
       ['OS=="solaris"', {