Only perform auto-detection of floating point ABI on ARM arch.

[nmoinvaz]

-mfloat-abi does not apply to aarch64 so we need to check for arm arch before doing auto-detection.

[codecov]

Codecov Report

Merging #898 (857ce43) into develop (bc33b26) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #898   +/-   ##
========================================
  Coverage    75.43%   75.43%           
========================================
  Files           73       73           
  Lines         8220     8220           
  Branches      1358     1358           
========================================
  Hits          6201     6201           
  Misses        1494     1494           
  Partials       525      525           

Flag	Coverage Δ
macos_clang	68.73% <ø> (ø)
macos_gcc	67.76% <ø> (ø)
ubuntu_clang	68.92% <ø> (ø)
ubuntu_clang_debug	68.36% <ø> (ø)
ubuntu_clang_inflate_allow_invalid_dist	68.91% <ø> (ø)
ubuntu_clang_inflate_strict	69.17% <ø> (ø)
ubuntu_clang_mmap	68.92% <ø> (ø)
ubuntu_clang_msan	69.17% <ø> (ø)
ubuntu_gcc	69.85% <ø> (ø)
ubuntu_gcc_aarch64	70.07% <ø> (ø)
ubuntu_gcc_aarch64_compat_no_opt	67.78% <ø> (ø)
ubuntu_gcc_aarch64_no_acle	68.30% <ø> (ø)
ubuntu_gcc_aarch64_no_neon	67.99% <ø> (ø)
ubuntu_gcc_armhf	70.49% <ø> (ø)
ubuntu_gcc_armhf_compat_no_opt	67.77% <ø> (ø)
ubuntu_gcc_armhf_no_acle	69.54% <ø> (ø)
ubuntu_gcc_armhf_no_neon	69.86% <ø> (ø)
ubuntu_gcc_armsf	70.48% <ø> (ø)
ubuntu_gcc_armsf_compat_no_opt	67.77% <ø> (ø)
ubuntu_gcc_compat_no_opt	69.14% <ø> (ø)
ubuntu_gcc_mingw_i686	0.00% <ø> (ø)
ubuntu_gcc_mingw_x86_64	0.00% <ø> (ø)
ubuntu_gcc_no_avx2	69.41% <ø> (ø)
ubuntu_gcc_no_pclmulqdq	66.52% <ø> (ø)
ubuntu_gcc_no_sse2	67.77% <ø> (ø)
ubuntu_gcc_no_sse4	66.52% <ø> (ø)
ubuntu_gcc_o3	69.12% <ø> (ø)
ubuntu_gcc_osb	70.67% <ø> (ø)
ubuntu_gcc_ppc	70.91% <ø> (ø)
ubuntu_gcc_ppc64	70.08% <ø> (ø)
ubuntu_gcc_ppc64le	69.06% <ø> (ø)
ubuntu_gcc_s390x	68.27% <ø> (ø)
ubuntu_gcc_sparc64	70.79% <ø> (ø)
win64_gcc	73.02% <ø> (ø)
win64_gcc_compat_no_opt	74.46% <ø> (ø)

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[Dead2]

LGTM