Support cross compiling for armhf variant ARM/linux.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 17dac2a082832eabf8f4dfa63e488da34132dc76..151df0f1a8090d9c8d0341ae174948f8026a7d97 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -225,7 +225,6 @@
       # Python version.
       'python_ver%': '2.6',
 
-
       # Set NEON compilation flags.
       'arm_neon%': 1,
 
@@ -675,7 +674,6 @@
           'sysroot%': '<!(cd <(DEPTH) && pwd -P)/arm-sysroot',
         }], # OS=="linux" and target_arch=="arm" and chromeos==0
 
-
         ['OS=="linux" and branding=="Chrome" and buildtype=="Official" and chromeos==0', {
           'conditions': [
             ['target_arch=="x64"', {
@@ -1771,7 +1769,9 @@
             'arm_fpu%': 'vfpv3-d16',
           }],
         ],
-        'arm_float_abi%': 'softfp',
+        # For ARM/linux builds we default to using the compilers default abi
+        # (normally arm-linux-gnueabi-gcc or arm-linux-gnueabihf-gcc)

[Lei Zhang, 2013/10/28 21:23:17]

Mention the permissible values are soft, softfp and hard?

+        'arm_float_abi%': 'default',
         'arm_thumb%': 1,
       }],
 
@@ -3065,7 +3065,7 @@
                       '-mfpu=<(arm_fpu)',
                     ],
                   }],
-                  ['arm_float_abi!=""', {
+                  ['arm_float_abi!="" and arm_float_abi!="default"', {
                     'cflags': [
                       '-mfloat-abi=<(arm_float_abi)',
                     ],