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configure: Don't try to enable the log2 function on msvcrt

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Some msvcrt versions (the static 64 bit libc in MSVC 10) have
a log2 function, but there is no declaration for it in the headers.
Therefore, the normal configure check might find it, but it can fail
during build or at runtime, depending on whether implicit function
declarations are an error or not.

Therefore simply ignore this function on this platform.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2012-09-10 15:34:51 +03:00
parent a84edbacaf
commit 88a3569917
1 changed files with 2 additions and 0 deletions
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2
configure vendored
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@ -1381,6 +1381,8 @@ need_memalign="altivec neon sse"
symver_if_any="symver_asm_label symver_gnu_asm"
log2_deps="!msvcrt"
# subsystems
dct_select="rdft"
mdct_select="fft"