=> Bootstrap dependency digest>=20211023: found digest-20220214
===> Skipping vulnerability checks.
WARNING: No /usr/pkg/pkgdb/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /usr/pkg/pkgdb fetch-pkg-vulnerabilities'.
===> Building for ccls-0.20220729
[  2%] Building CXX object CMakeFiles/ccls.dir/third_party/siphash.cc.o
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In file included from /work/devel/ccls/work/ccls-0.20220729/src/clang_tu.cc:4:
In file included from /work/devel/ccls/work/ccls-0.20220729/src/clang_tu.hh:6:
In file included from /work/devel/ccls/work/ccls-0.20220729/src/position.hh:6:
/work/devel/ccls/work/ccls-0.20220729/src/utils.hh:6:10: fatal error: 'optional' file not found
#include <optional>
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[  6%] Building CXX object CMakeFiles/ccls.dir/src/config.cc.o
In file included from /work/devel/ccls/work/ccls-0.20220729/src/config.cc:4:
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In file included from /work/devel/ccls/work/ccls-0.20220729/src/serializer.hh:6:
/work/devel/ccls/work/ccls-0.20220729/src/utils.hh:6:10: fatal error: 'optional' file not found
#include <optional>
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--- CMakeFiles/ccls.dir/src/config.cc.o ---
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