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Fix and improve clang detection #9886

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Fix and improve clang detection #9886

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10 changes: 8 additions & 2 deletions configure.ac.in
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Original file line number Diff line number Diff line change
Expand Up @@ -91,14 +91,20 @@ if test "x$USE_CLANG" = xyes; then
CC=clang
CXX="clang++ -fno-color-diagnostics -fPIE -stdlib=libc++"
else
if test -x "/usr/bin/clang-10"; then
if test -x "$(command -v clang)"; then
CLANG_VERSION=$(echo -n | clang -dM -E - | sed -n 's/^#define __clang_major__ \([0-9]\+\).*$/\1/gp')
elif test -x "/usr/bin/clang-10"; then
CLANG_VERSION=10
elif test -x "/usr/bin/clang-13"; then
CLANG_VERSION=13
elif test -x "/usr/bin/clang-14"; then
CLANG_VERSION=14
elif test -x "/usr/bin/clang-19"; then
CLANG_VERSION=19
elif test -x "/usr/bin/clang-20"; then
CLANG_VERSION=20
else
echo "Could not find clang. Please install clang-14 clang-tools-14"
echo "Could not find clang. Please install clang clang-tools"
exit 1
fi

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