joyent/node — pull request #3281 by otavio (2012-05-18 00:52:06+00:00)
Title: Fix hardfloat detection in Linux

gcc has a builtin define to denote hard abi when in use, e.g. when
using -mfloat-abi=hard it will define __ARM_PCS_VFP to 1 and therefore
we should check that to determine which calling convention is in use
and not __VFP_FP__ which merely indicates presence of VFP unit

The fix has been provided by Khem Raj