On Sat, 20 Jun 2026 at 18:25, Arsen Arsenović <[email protected]> wrote:
>
> Previously, none would be set, so an installed compiler that does not
> emit an RPATH to its libraries would not be able to execute programs
> that require libstdc++.so symbols.
>
> libstdc++-v3/ChangeLog:
>
> * testsuite/lib/libstdc++.exp (libstdc++_init): Use
> gcc-set-multilib-library-path to calculate LD_LIBRARY_PATH for
> installed G++ compilers.
> ---
> Before:
>
> Setting LD_LIBRARY_PATH to
> :/usr/local/tools/gcc-2025/lib64:/usr/local/tools/gcc-2025/lib
> Execution timeout is: 300
> spawn [open ...]
> ./1.exe: /usr/local/tools/gcc-2025/lib64/libstdc++.so.6: version
> `GLIBCXX_3.4.35' not found (required by ./1.exe)
> FAIL: 23_containers/flat_set/1.cc -std=gnu++26 execution test
>
> After:
>
> Setting LD_LIBRARY_PATH to
> :/srv/data/aarsenovic/getting-started/install/lib/gcc/x86_64-none-linux-gnu/17.0.0/../../../../x86_64-none-linux-gnu/lib/../lib64::/srv/data/aarsenovic/getting-started/install/lib/gcc/x86_64-none-linux-gnu/17.0.0/../../../../x86_64-none-linux-gnu/lib/../lib64:/usr/local/tools/gcc-2025/lib64:/usr/local/tools/gcc-2025/lib
> Execution timeout is: 300
> spawn [open ...]
> PASS: 23_containers/flat_set/1.cc -std=gnu++26 execution test
>
> Other testsuites also seem to do this.
>
> OK? It may be useful also to backport.
OK for trunk.
Backports seem OK too but give it some time to bake on trunk first.
>
> libstdc++-v3/testsuite/lib/libstdc++.exp | 12 +++++++-----
> 1 file changed, 7 insertions(+), 5 deletions(-)
>
> diff --git a/libstdc++-v3/testsuite/lib/libstdc++.exp
> b/libstdc++-v3/testsuite/lib/libstdc++.exp
> index 4ffbf106b6bf..62a04ca10b60 100644
> --- a/libstdc++-v3/testsuite/lib/libstdc++.exp
> +++ b/libstdc++-v3/testsuite/lib/libstdc++.exp
> @@ -75,6 +75,7 @@ load_gcc_lib timeout.exp
> load_gcc_lib timeout-dg.exp
> load_gcc_lib wrapper.exp
> load_gcc_lib target-utils.exp
> +load_gcc_lib gcc-defs.exp
> load_gcc_lib dg-test-cleanup.exp
>
> # Useful for debugging. Pass the name of a variable and the verbosity
> @@ -247,13 +248,14 @@ proc libstdc++_init { testfile } {
> }
> }
> }
> -
> - set_ld_library_path_env_vars
> - if [info exists env(LD_LIBRARY_PATH)] {
> - verbose -log "LD_LIBRARY_PATH = $env(LD_LIBRARY_PATH)"
> - }
> } else {
> set compiler [transform "g++"]
> + append ld_library_path [gcc-set-multilib-library-path $compiler]
> + }
> +
> + set_ld_library_path_env_vars
> + if [info exists env(LD_LIBRARY_PATH)] {
> + verbose -log "LD_LIBRARY_PATH = $env(LD_LIBRARY_PATH)"
> }
>
> # Set the default timeout for v3 tests.
> --
> 2.54.0
>
