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configure: Suppress expected compiler error message

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Florian Weimer
2017-06-13 22:09:59 +02:00
parent f8bf87face
commit c2528fef3b
3 changed files with 8 additions and 2 deletions
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3
configure vendored
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@ -5337,7 +5337,8 @@ fi
# copy of those headers in Makerules.
if test -n "$CXX"; then
find_cxx_header () {
echo "#include <$1>" | $CXX -M -MP -x c++ - | sed -n "\,$1:,{s/:\$//;p}"
echo "#include <$1>" | $CXX -M -MP -x c++ - 2>/dev/null \
| sed -n "\,$1:,{s/:\$//;p}"
}
CXX_CSTDLIB_HEADER="$(find_cxx_header cstdlib)"
CXX_CMATH_HEADER="$(find_cxx_header cmath)"