[OE-core] [PATCH v2] python3: RDEPEND on libgcc

[Khem Raj]

On Tue, Dec 31, 2019 at 11:07 AM Joshua Watt <jpewhacker at gmail.com> wrote:
>
> Python uses features of glibc that require it to dynamically load (i.e.
> dlopen()) libgcc_s at runtime. However, since this isn't a link time
> dependency, it doesn't get picked up automatically by bitbake so
> manually add it to RDEPENDS.
>
> There is an outstanding bug in Python to make it explicitly link against
> libgcc at link time which would remove the need for this. See:
> https://bugs.python.org/issue37395
>
> Signed-off-by: Joshua Watt <JPEWhacker at gmail.com>
> ---
>  meta/recipes-devtools/python/python3_3.7.5.bb | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/meta/recipes-devtools/python/python3_3.7.5.bb b/meta/recipes-devtools/python/python3_3.7.5.bb
> index 137b540dba..78312b05f3 100644
> --- a/meta/recipes-devtools/python/python3_3.7.5.bb
> +++ b/meta/recipes-devtools/python/python3_3.7.5.bb
> @@ -306,6 +306,8 @@ RPROVIDES_${PN}-venv += "python3-pyvenv"
>  PACKAGES =+ "libpython3 libpython3-staticdev"
>  FILES_libpython3 = "${libdir}/libpython*.so.*"
>  FILES_libpython3-staticdev += "${prefix}/lib/python${PYTHON_MAJMIN}/config-${PYTHON_BINABI}-*/libpython${PYTHON_BINABI}.a"
> +# See https://bugs.python.org/issue18748 and https://bugs.python.org/issue37395
> +RDEPENDS_libpython3 += "libgcc"

while this is glibc specific change depending on gcc runtime, it seems
we should only apply is when we use gcc runtime and glibc

glibc part is easy just use libc-glibc override for gcc runtime piece
perhaps, its good to introduce, virtual/compiler-runtime and let
libgcc
provide it by default, but let apps depend on virtual/compiler-runtime


>  INSANE_SKIP_${PN}-dev += "dev-elf"
>
>  # catch all the rest (unsorted)
> --
> 2.23.0
>
> --
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