ARCHS
aixgcc for AIX >= 5.x with gcc >= 4.8
freebsd7 for FreeBSD 7.x with gcc >= 4.8
linux for i386 Linux with gcc >= 4.8
linuxarm for ARM Linux with gcc >= 4.8
linuxppcgcc for PPC Linux with gcc >= 4.8
linuxppc64gcc for PPC 64 Linux with gcc >= 4.8
linuxx8664gcc for x86-64 Linux with gcc >= 4.8
linuxx8664icc for x86-64 Linux with Intel icc >= 13
linuxx8664k1omicc for x86-64 Linux for Intel MIC with Intel icc >= 13
linuxx32gcc for x32 Linux ABI with gcc >= 4.8
macosx for MacOS X >= 10.8 with clang
macosxicc for MacOS X >= 10.8 with Intel icc >= 13 (Intel only)
macosx64 for MacOS X >= 10.8 with gcc >= 4.8 64 bit mode
openbsd for OpenBSD >= 5.x with gcc >= 4.8
win32gcc for Win32 with cygwin/gcc with gcc >= 4.8
win64gcc for Win64 with cygwin/gcc with gcc >= 4.8