https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125194
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-16 branch has been updated by Georg-Johann Lay <[email protected]>: https://gcc.gnu.org/g:30e1fbb1cc71bb0662095e868febeaea79d50064 commit r16-8912-g30e1fbb1cc71bb0662095e868febeaea79d50064 Author: Georg-Johann Lay <[email protected]> Date: Thu May 14 10:21:28 2026 +0200 AVR: target/125194 - Make -mno-call-main work with -flto. Instead of emitting .global __call_main + __call_main=0 in some module, it uses a %{mno-call-main: --defsym __call_main=0} spec. The problem with the old implementation is that avr_no_call_main_p was set by cc1[plus] (in avr_insert_attributes) but used by lto1 (in avr_file_end). The new approach uses --defsym __call_main=0 in order to avoid link fails due to multiple definitions of __call_main in *.o and lib<mcu>.a. PR target/125194 gcc/ * config/avr/avr.cc (avr_no_call_main_p): Remove variable... (avr_file_end): ...and code that uses it. (avr_insert_attributes): Same. Add "used" to main attributes when -mno-call-main. * config/avr/gen-avr-mmcu-specs.cc (print_mcu): Emit code for link_no_call_main specs. * config/avr/specs.h (LINK_SPEC): Add %(link_no_call_main). (cherry picked from commit 701c41191413fdcfeea33b8f49cfebf62b8a6135)
