Enable -fPIC by default on x64

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index faeefc6e4942d8da298b6fe6659540dd83182eea..e11cb5b000fe178a39247b00786b7dc0d06c8e10 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -104,10 +104,6 @@
       # compilation.
       'fastbuild%': 0,
 
-      # Set to 1 compile with -fPIC cflag on linux. This is a must for shared
-      # libraries on linux x86-64 and arm.
-      'linux_fpic%': 0,
-
       # Python version.
       'python_ver%': '2.5',
 
@@ -147,7 +143,6 @@
     'touchui%': '<(touchui)',
     'inside_chromium_build%': '<(inside_chromium_build)',
     'fastbuild%': '<(fastbuild)',
-    'linux_fpic%': '<(linux_fpic)',
     'python_ver%': '<(python_ver)',
     'armv7%': '<(armv7)',
     'arm_neon%': '<(arm_neon)',
@@ -1088,7 +1083,7 @@
               }],
             ],
           }],
-          ['linux_fpic==1', {
+          ['OS=="linux" and (target_arch=="x64" or target_arch=="arm")', {
             'cflags': [
               '-fPIC',
             ],
@@ -1120,12 +1115,6 @@
             # When building with shared libraries, remove the visiblity-hiding
             # flag.
             'cflags!': [ '-fvisibility=hidden' ],
-            'conditions': [
-              ['target_arch=="x64" or target_arch=="arm"', {
-                # Shared libraries need -fPIC on x86-64 and arm
-                'cflags': ['-fPIC']
-              }]
-            ],
           }],
           ['linux_use_heapchecker==1', {
             'variables': {'linux_use_tcmalloc%': 1},