Build errors on CentOS 7.4 with gcc 4.8.5 about bolt

[centminmod]

I would use devtoolset-7 for GCC 7.3.1 - it's what i use on CentOS 6/7 for compiling Nginx, GCC 7/8, and Clang 5/6 myself :)

see https://www.softwarecollections.org/en/scls/rhscl/devtoolset-7/

edit: small correction for compiling Clang 6 it actually picks up devtoolset-6 for GCC 6.3.1 https://www.softwarecollections.org/en/scls/rhscl/devtoolset-6/ even when i have devtoolset-7 + devtoolset-6 installed.

on CentOS 7.5 64bit

/opt/sbin/llvm-release_60/bin/clang -v
clang version 6.0.1 (branches/release_60 335101)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/sbin/llvm-release_60/bin
Found candidate GCC installation: /opt/rh/devtoolset-4/root/usr/lib/gcc/x86_64-redhat-linux/5.3.1
Found candidate GCC installation: /opt/rh/devtoolset-6/root/usr/lib/gcc/x86_64-redhat-linux/6.3.1
Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.8.2
Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.8.5
Selected GCC installation: /opt/rh/devtoolset-6/root/usr/lib/gcc/x86_64-redhat-linux/6.3.1
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64

/opt/rh/devtoolset-7/root/usr/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/opt/rh/devtoolset-7/root/usr/bin/gcc
COLLECT_LTO_WRAPPER=/opt/rh/devtoolset-7/root/usr/libexec/gcc/x86_64-redhat-linux/7/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap --enable-languages=c,c++,fortran,lto --prefix=/opt/rh/devtoolset-7/root/usr --mandir=/opt/rh/devtoolset-7/root/usr/share/man --infodir=/opt/rh/devtoolset-7/root/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared --enable-threads=posix --enable-checking=release --enable-multilib --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-gcc-major-version-only --enable-plugin --with-linker-hash-style=gnu --enable-initfini-array --with-default-libstdcxx-abi=gcc4-compatible --with-isl=/builddir/build/BUILD/gcc-7.3.1-20180303/obj-x86_64-redhat-linux/isl-install --enable-libmpx --enable-gnu-indirect-function --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 7.3.1 20180303 (Red Hat 7.3.1-5) (GCC) 

[maksfb]

That's a known issue with GCC 4.8. Sadly, there's no other workaround than using a more recent compiler version.

[pzelasko]

Thanks for your advice! I'll check it out.

[ziyoujiyi]

@maksfb Instrumentation is experimental and currently does not work for PIEs/SOs. when this tool can support SOs?

[maksfb]

@maksfb Instrumentation is experimental and currently does not work for PIEs/SOs. when this tool can support SOs?

We do not have immediate plans for x86-64 Linux SOs, but are working on MacOS PIEs.