GCC 10 has -fno-common as default. It causes many multiple definition issues to build dependencies in jhbuild. I know we have moved to flatpak sdk but there may be someone who needs a fix for the issue like me.
Created attachment 400045 [details] Patch
Comment on attachment 400045 [details] Patch Thanks for your review!
Committed r262063: <https://trac.webkit.org/changeset/262063> All reviewed patches have been landed. Closing bug and clearing flags on attachment 400045 [details].