[Webkit-unassigned] [Bug 159083] THUMB2 support not correctly detected on Fedora with GCC 6.1.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=159083

--- Comment #2 from Tomas Popela <tpopela at redhat.com> ---
Ok, the problem here is the detection of THUMB2 support. Our code is based on __thumb2__ or __thumb__ defines. This does work on Debian:

$ gcc -dM -E - < /dev/null | grep -i thumb
#define __thumb2__ 1
#define __THUMB_INTERWORK__ 1
#define __thumb__ 1
#define __ARM_ARCH_ISA_THUMB 2
#define __THUMBEL__ 1

but does not on Fedora 24 with GCC 6.1. :

$ gcc -dM -E - < /dev/null | grep -i thumb
#define __THUMB_INTERWORK__ 1
#define __ARM_ARCH_ISA_THUMB 2

as the previously mentions defines are not presented there.

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