Re: undefined reference to `RTco_select'

[john o goyo]

Greetings, All.

On 2023-01-13 23:36, Gaius Mulley wrote:
> 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

You could also try "gm2 hello.mod -lm2pim -lm2iso".

Oddly, Gaius, I find that "gm2 hello.mod" works alone but "gm2 -O2 
hello.mod" fails without adding "-lm2pim".

Sincerely,
john

> 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.