ERROR building qemu: pthread check failed

Issue

I am trying to build qemu on Debian buster for amd64 with --target-list="i386-softmmu x86_64-softmmu".

But getting error

ERROR: pthread check failed
       Make sure to have the pthread libs and headers installed.

Searched on internet and stackoverflow and checked that I have installed the following libraries that were told to provide the pthread libs and headers.

libc6 libc6-dev libpth-dev libpthread-stubs0-dev

What am I missing? Which Debian package to install to solve this issue?

Thanks in advance.

Solution

With Debian based distributions, the easiest way to ensure you have all the build dependencies installed is to make sure your apt sources.list includes deb-src lines, and then use "apt build-dep qemu". This will install everything needed to build the distro's version of QEMU, which is generally pretty much what you want for a build from source.

If you've done that and are still seeing issues: make sure you're building a recent QEMU and not some ancient version.

Answered By - Peter Maydell