python3: RDEPEND on libgcc

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

(From OE-Core rev: 04297ee03f5f4e4edafaf332a6648465f52ba1eb)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
[ merged the fix to make it glibc only ]
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/meta/recipes-devtools/python/python3_3.7.6.bb b/meta/recipes-devtools/python/python3_3.7.6.bb
index 7a569f9ca7..3efd3bcac8 100644
--- a/meta/recipes-devtools/python/python3_3.7.6.bb
+++ b/meta/recipes-devtools/python/python3_3.7.6.bb
@@ -308,6 +308,8 @@ FILES_${PN}-misc = "${libdir}/python${PYTHON_MAJMIN} ${libdir}/python${PYTHON_MA
 PACKAGES += "${PN}-man"
 FILES_${PN}-man = "${datadir}/man"
 
+# See https://bugs.python.org/issue18748 and https://bugs.python.org/issue37395
+RDEPENDS_libpython3_append_libc-glibc = " libgcc"
 RDEPENDS_${PN}-ptest = "${PN}-modules ${PN}-tests unzip bzip2 libgcc tzdata-europe coreutils sed"
 RDEPENDS_${PN}-ptest_append_libc-glibc = " locale-base-tr-tr.iso-8859-9"
 RDEPENDS_${PN}-tkinter += "${@bb.utils.contains('PACKAGECONFIG', 'tk', 'tk tk-lib', '', d)}"