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configure: Only add -FIstdlib.h for msvc/icl if necessary
This is only necessary on MSVC 2010/2012 (and possibly on some ICL versions). This both avoids an extra hack on newer MSVC versions, and better documents what the extra compiler option is used for. Signed-off-by: Martin Storsjö <martin@martin.st>
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15
configure
vendored
15
configure
vendored
@ -3057,7 +3057,7 @@ probe_cc(){
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_ld_lib='lib%.a'
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_ld_path='-libpath:'
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_flags='-nologo'
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_cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
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_cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -Dstrtoll=_strtoi64'
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elif $_cc 2>&1 | grep -q Intel; then
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_type=icl
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_ident=$($_cc 2>&1 | head -n1)
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@ -3080,7 +3080,7 @@ probe_cc(){
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_flags='-nologo -Qdiag-error:4044,10157'
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# -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
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# with MSVC which enables it by default.
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_cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
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_cflags='-D_USE_MATH_DEFINES -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
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elif $_cc --version 2>/dev/null | grep -q ^cparser; then
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_type=cparser
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_ident=$($_cc --version | head -n1)
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@ -4678,6 +4678,17 @@ elif enabled_any msvc icl; then
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fi
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# msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
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check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
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# The CRT headers contain __declspec(restrict) in a few places, but if redefining
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# restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
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# (as it ends up if the restrict redefine is done before including stdlib.h), while
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# MSVC 2013 and newer can handle it fine.
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# If this declspec fails, force including stdlib.h before the restrict redefinition
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# happens in config.h.
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if [ $_restrict != restrict ]; then
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check_cc <<EOF || add_cflags -FIstdlib.h
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__declspec($_restrict) void* foo(int);
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EOF
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fi
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fi
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case $as_type in
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