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.
---
configure | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/configure b/configure
index 814dfbd..b67c4b5 100755
--- a/configure
+++ b/configure
@@ -3062,7 +3062,7 @@ probe_cc(){
_ld_lib='lib%.a'
_ld_path='-libpath:'
_flags='-nologo'
- _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS
-Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
+ _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS
-Dinline=__inline -Dstrtoll=_strtoi64'
elif $_cc 2>&1 | grep -q Intel; then
_type=icl
_ident=$($_cc 2>&1 | head -n1)
@@ -3085,7 +3085,7 @@ probe_cc(){
_flags='-nologo -Qdiag-error:4044,10157'
# -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
# with MSVC which enables it by default.
- _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0
-Qvec- -Qsimd- -GS'
+ _cflags='-D_USE_MATH_DEFINES -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd-
-GS'
elif $_cc --version 2>/dev/null | grep -q ^cparser; then
_type=cparser
_ident=$($_cc --version | head -n1)
@@ -4734,6 +4734,17 @@ elif enabled_any msvc icl; then
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
+ # The CRT headers contain __declspec(restrict) in a few places, but if
redefining
+ # restrict, this might break. MSVC 2010 and 2012 fail with
__declspec(__restrict)
+ # (as it ends up if the restrict redefine is done before including
stdlib.h), while
+ # MSVC 2013 and newer can handle it fine.
+ # If this declspec fails, force including stdlib.h before the restrict
redefinition
+ # happens in config.h.
+ if [ $_restrict != restrict ]; then
+ check_cc <<EOF || add_cflags -FIstdlib.h
+__declspec($_restrict) void* foo(int);
+EOF
+ fi
fi
case $as_type in
--
1.8.1.2
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