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configure: Allow log2 with MSVC 2013 onwards. 

Only MSVC 2010 in x64 mode, in the static msvcrt, had a
stray log2 function (which wasn't available in the headers).

MSVC 2013 has got a proper log2 function though.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Matt Oliver 2014-05-11 17:40:20 +10:00 committed by Martin Storsjö
parent 863ee06809
commit 3edeb7749e
1 changed files with 2 additions and 2 deletions
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4
configure vendored
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@ -1744,8 +1744,6 @@ fast_unaligned_if_any="aarch64 ppc x86"
simd_align_16_if_any="altivec neon sse"
# system capabilities
log2_deps="!libc_msvcrt"
symver_if_any="symver_asm_label symver_gnu_asm"
valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
@ -4563,6 +4561,8 @@ elif enabled_any msvc icl; then
# not supported (build will fail)
disable inline_asm
fi
# msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
fi
case $as_type in