https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104871
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-12 branch has been updated by Iain D Sandoe <ia...@gcc.gnu.org>: https://gcc.gnu.org/g:64f5efce03c248af7f51d600b5519f46f64eea48 commit r12-8486-g64f5efce03c248af7f51d600b5519f46f64eea48 Author: Simon Wright <si...@pushface.org> Date: Sun Jun 12 17:01:22 2022 +0100 Darwin: Truncate kernel-provided version to OS major for Darwin >= 20. In common with system tools, GCC uses a version obtained from the kernel as the prevailing macOS target, when that is not overridden by command line or environment versions (i.e. mmacosx-version-min=, MACOSX_DEPLOYMENT_TARGET). Presently, GCC assumes that if the OS version is >= 20, the value used should include both major and minium version identifiers. However the system tools (for those versions) truncate the value to the major version - this leads to link errors when combining objects built with clang and GCC for example: ld: warning: object file (null.o) was built for newer macOS version (12.2) than being linked (12.0) The change here truncates the values GCC uses to the major version. gcc/ChangeLog: PR target/104871 * config/darwin-driver.cc (darwin_find_version_from_kernel): If the OS version is darwin20 (macOS 11) or greater, truncate the version to the major number. (cherry picked from commit add1adaa17a294ea25918ffb4fdd40f115362632)
