Re: undefined reference to `RTco_select'

[Gaius Mulley]

Hello Saifi,

apologies in the delay for the reply.  Yes this is a bug - but it can
be worked around by adding the libraries explicitly, eg:

gm2 -g -flibs=pim,iso  hello.mod

hope this helps,

regards,
Gaius

On Sun, Dec 11, 2022 at 6:02 AM Saifi Khan <saifi.khan@nishan.io> wrote:
>
> Hi:
>
> Trying to compile basic module in GNU Modula-2 and the following lines are 
> spewed by the linker
>
> /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/m2/m2pim/libm2pim.so: undefined 
> reference to `RTco_select'
> /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/m2/m2pim/libm2pim.so: undefined 
> reference to `RTco_initSemaphore'
> /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/m2/m2pim/libm2pim.so: undefined 
> reference to `RTco_wait'
> /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/m2/m2pim/libm2pim.so: undefined 
> reference to `RTco_signal'
> collect2: error: ld returned 1 exit status
>
> $ gm2 --version
> gm2 (Debian 12.2.0-9) 12.2.0
> Copyright (C) 2022 Free Software Foundation, Inc.
>
> Here are the operating environment specific details
>
> $ cat /etc/os-release
> PRETTY_NAME="Debian GNU/Linux bookworm/sid"
> NAME="Debian GNU/Linux"
> VERSION_CODENAME=bookworm
> ID=debian
> HOME_URL="https://www.debian.org/";
> SUPPORT_URL="https://www.debian.org/support";
> BUG_REPORT_URL="https://bugs.debian.org/";
>
> $ uname -a
> Linux ankara 6.0.0-5-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.0.10-1 
> (2022-11-26) x86_64 GNU/Linux
>
> $ gcc -v
> Using built-in specs.
> COLLECT_GCC=gcc
> COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/12/lto-wrapper
> OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
> OFFLOAD_TARGET_DEFAULT=1
> Target: x86_64-linux-gnu
> Configured with: ../src/configure -v --with-pkgversion='Debian 12.2.0-9' 
> --with-bugurl=file:///usr/share/doc/gcc-12/README.Bugs 
> --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 --prefix=/usr 
> --with-gcc-major-version-only --program-suffix=-12 
> --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id 
> --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix 
> --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug 
> --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new 
> --enable-gnu-unique-object --disable-vtable-verify --enable-plugin 
> --enable-default-pie --with-system-zlib --enable-libphobos-checking=release 
> --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch 
> --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 
> --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic 
> --enable-offload-targets=nvptx-none=/build/gcc-12-lH3g9c/gcc-12-12.2.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-12-lH3g9c/gcc-12-12.2.0/debian/tmp-gcn/usr
>  --enable-offload-defaulted --without-cuda-driver --enable-checking=release 
> --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
> Thread model: posix
> Supported LTO compression algorithms: zlib zstd
> gcc version 12.2.0 (Debian 12.2.0-9)
>
> As noted in an earlier thread
> https://lists.gnu.org/archive/html/gm2/2021-04/msg00007.html
>
> i've ensured that modules, procedures and type identifiers are in upper case.
>
> Any pointers how to resolve this ?
>
>
> warm regards
> Saifi.
>