Hi Tomek, On Wed, Oct 11, 2023 at 3:21 PM Tomek CEDRO <to...@cedro.info> wrote: > > Hello world, > > I have encountered a basic esp32:nsh build error in nuttx-12.3.0-RC0 > related to xtensa g++ 8.4.0 compiler: > > xtensa-esp32-elf-g++: error: unrecognized command line option > '-std=gnu++20'; did you mean '-std=gnu++2a'?
This was changed in d6453cfc3cd4771a5221528cab3056660be4b1e3 (PR # 8244). See mail thread: https://lists.apache.org/thread/rkq99os8ql28bv1w8fy5mdqwl3h2vp6m The workaround is to set Kconfig CXX_STANDARD to gnu++2a instead of gnu++20. It would be nice if the build system could automatically detect the compiler version and set this value accordingly and automatically, without a Kconfig. IIRC there are programs in tools that determine compiler options based on the compiler and version. (Can't remember details off the top of my head at the moment.) More below: > Therefore -1 from me at this point. This does not happen in 12.2.1. If > a minimum required version of a compiler is required then this must be > somehow clearly stated. This would break older setups. Looks like a > breaking change. I do not even use C++. Can we please make this > optional? Details below. > > BUILD HOST: > FreeBSD octagon 13.2-RELEASE-p4 FreeBSD 13.2-RELEASE-p4 GENERIC amd64 > > REMARKS: > 1. flock is a new system build dependency. I think documentation needs to be updated? I think not all systems have flock. Is it a Linux-only thing? (Non-BSD?) Cheers, Nathan
