bitbake: lib/bb: Add workaround for libgcc issues with python 3.8 and 3.9

With python 3.8 and 3.9, we see intermittent errors of:

libgcc_s.so.1 must be installed for pthread_cancel to work
Aborted (core dumped)

which seem related to:

https://stackoverflow.com/questions/64797838/libgcc-s-so-1-must-be-installed-for-pthread-cancel-to-work
https://bugs.ams1.psf.io/issue42888

These tend to occur on debian 11 and ubuntu 20.04.

Workaround this by ensuring libgcc is preloaded in all cases.

(Bitbake rev: 72bf75f0b2e7f36930185e18a1de8277ce7045d8)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/bitbake/lib/bb/__init__.py b/bitbake/lib/bb/__init__.py
index 3163481e56..75b66edc48 100644
--- a/bitbake/lib/bb/__init__.py
+++ b/bitbake/lib/bb/__init__.py
@@ -15,6 +15,13 @@ import sys
 if sys.version_info < (3, 8, 0):
     raise RuntimeError("Sorry, python 3.8.0 or later is required for this version of bitbake")
 
+if sys.version_info < (3, 10, 0):
+    # With python 3.8 and 3.9, we see errors of "libgcc_s.so.1 must be installed for pthread_cancel to work"
+    # https://stackoverflow.com/questions/64797838/libgcc-s-so-1-must-be-installed-for-pthread-cancel-to-work
+    # https://bugs.ams1.psf.io/issue42888
+    # so ensure libgcc_s is loaded early on
+    import ctypes
+    libgcc_s = ctypes.CDLL('libgcc_s.so.1')
 
 class BBHandledException(Exception):
     """