missing clang when building with Postgresql 11.1-1 and Centos 7.5

[Phone911]

For a Postgresql 11.1-1 install: running make on Centos 7.5 gets this error:

/opt/rh/llvm-toolset-7/root/usr/bin/clang -Wno-ignored-attributes -fno-strict-aliasing -fwrapv -O2 -I. -I./ -I/usr/pgsql-11/include/server -I/usr/pgsql-11/include/internal -D_GNU_SOURCE -I/usr/include/libxml2 -I/usr/include -flto=thin -emit-llvm -c -o src/semver.bc src/semver.c
make: /opt/rh/llvm-toolset-7/root/usr/bin/clang: Command not found
make: *** [src/semver.bc] Error 127

I could not find an appropriate package to install to solve this.

[theory]

I ran into the same error building RPMs on CentOS 7 at work. The issue isn't CentOS, though, but Postgres 11, the Yum RPM for which is compiled with LLVM 5 to support JIT with Bitcode. FBOFW, that means anyone building extensions needs LLVM 5, too. The RPM is named llvm5.0, and is in standard CentOS. I found I also needed to install devtoolset-7 and llvm-toolset-7, though; they're in the SCLo Yum repo, not core CentOS.

HTH!

[Phone911]

Thank you! Installing the three packages corrected the problem. Gary Burchett Tel: +1 (919) 531-6995 Mobile: +1 (919) 413-3146 From: David E. Wheeler <notifications@github.com> Sent: Wednesday, November 21, 2018 9:02 AM To: theory/pg-semver <pg-semver@noreply.github.com> Cc: Gary Burchett <Gary.Burchett@sas.com>; Author <author@noreply.github.com> Subject: Re: [theory/pg-semver] missing clang when building with Postgresql 11.1-1 and Centos 7.5 (#35) EXTERNAL I ran into the same error building RPMs on CentOS 7 at work. The issue isn't CentOS, though, but Postgres 11, the Yum RPM for which is compiled with LLVM 5 to support JIT with Bitcode<https://www.postgresql.org/docs/current/jit-extensibility.html>. FBOFW, that means anyone building extensions needs LLVM 5, too. The RPM is named llvm5.0, and is in standard CentOS. I found I also needed to install devtoolset-7 and llvm-toolset-7, though; they're in the SCLo<https://pkgs.org/download/llvm-toolset-7-llvm> Yum repo, not core CentOS. HTH! — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<#35 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AGdX2tLXr-Vw5SV01M0xeb-HukRNDLFcks5uxVzugaJpZM4Yr_63>.

[hadanhtoi]

hi @theory I have installed 3 packages but I still got same error. So , Do I must set /opt/rh to $path ?

[theory]

Dunno, maybe something changed in the clang RPMs for CentOS?

[ikalafat]

@theory @hadanhtoi just encountered same error, even with 3 mentioned packages installed on latest CentOS 7.

I also had to install yum install llvm-toolset-7-clang.

Cheers.