The llvm-bolt package does not build with LIBBOLT_RT_INSTR on
/usr/lib/llvm-${LLVM_VERSION}/lib/libbolt_rt_instr.a, result in llvm-bolt
failed with --instrument.
Here is a shell script to reproduce the bug:
#!/usr/bin/env bash
echo "int main() { return 0;}" > /tmp/test.cpp && \
clang++ /tmp/test.cpp -o /tmp/test -Wl,--emit-relocs && \
llvm-bolt /tmp/test --instrument -o /tmp/test-instr