Date: Sun, 17 Apr 2022 20:20:49 -0700 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: Mark Millard <marklmi@yahoo.com> Cc: freebsd-ports@freebsd.org, FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: Use of lang/gcc*'s g++* via the likes of USE_GCC=11:build+ in ports when a -Wl,-rpath=/usr/local/lib/gcc* is required: How? Message-ID: <YlzZEX2XAxOYYnNc@troutmask.apl.washington.edu> In-Reply-To: <90BF482E-BE98-4783-8440-9FA0E03E3D88@yahoo.com> References: <90BF482E-BE98-4783-8440-9FA0E03E3D88.ref@yahoo.com> <90BF482E-BE98-4783-8440-9FA0E03E3D88@yahoo.com>
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On Sun, Apr 17, 2022 at 07:21:11PM -0700, Mark Millard wrote:
> I'll use g++11 as an example here. By no means is the issue
> limited to g++11 . Also, the general issue is not limited
> to the specifics of the other aspects of the example I report
> below.
>
>
> EXAMPLE PROBLEM:
>
> FreeBSD's /lib/libgcc_s.so.1 is insufficient for what aarch64
> g++11 code generation expects to be provided. Programs can be
> built but end up with notices that start with:
>
> ld-elf.so.1: /lib/libgcc_s.so.1: version GCC_4.5.0 required by
> . . . not found
>
> Sometimes the ". . ." is /usr/local/lib/gcc11/libstdc++.so.6 .
> Other times it does not get that far because the program
> itself has the issue before shared libraries are bound. A
> simple 6 line program on aarch64 can show the issue:
>
You're best bet is to have small shell scripts. For gfortran
testing with it built in my home directory, I have
% cat ~/bin/gfcx
#! /bin/sh
DIR=`id -P kargl | sed 's/\:/\ /g' | awk '{print $9}'`
export DIR
LD_LIBRARY_PATH=$DIR/work/lib
export LD_LIBRARY_PATH
LD_RUN_PATH=$DIR/work/lib
export LD_RUN_PATH
$DIR/work/bin/gfortran -fno-backtrace $@
You'll need to figure out how to get the build to use your
scripts.
PS: When clang/llvm was imported into FreeBSD, /lib/libgcc_s.so.1
should have been renamed to libllvm_s_so.1. Usurping a well-known
name from a well-known open-source compiler is simply stupid.
--
Steve
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