https://bugzilla.suse.com/show_bug.cgi?id=1219733 Bug ID: 1219733 Summary: qemu ipxe roms will stop compiling with binutils update Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Virtualization:Tools Assignee: virt-bugs@suse.de Reporter: matz@suse.com QA Contact: qa-bugs@suse.de Target Milestone: --- Found By: --- Blocker: --- We're preparing a binutils update to version 2.42 in openSUSE:Factory:Staging:A ( https://build.opensuse.org/request/show/1144349 ), and qemu-ipxe assembly sources hit a problem there: [ 3712s] gcc -E -DARCH=x86_64 -DPLATFORM=efi -DSECUREBOOT=0 -fstrength-reduce -fomit-frame-pointer -falign-jumps=1 -falign-loops=1 -falign-functions=1 -m64 -mno-mmx -mno-sse -fshort-wchar -Ui386 -Ulinux -DNVALGRIND -fpie -mno-red-zone -fstack-protector-strong -mstack-protector-guard=global -Iinclude -I. -Iarch/x86/include -Iarch/x86_64/include -Iarch/x86_64/include/efi -Os -g -ffreestanding -fcommon -Wall -W -Wformat-nonliteral -fno-dwarf2-cfi-asm -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -Wno-address -Wno-stringop-truncation -Wno-address-of-packed-member -Wno-array-bounds -Wno-dangling-pointer -Werror -ffunction-sections -include include/compiler.h -DASM_TCHAR='@' -DASM_TCHAR_OPS='@' -DCONFIG=qemu -DLOCAL_CONFIG=qemu -DASSEMBLY -DOBJECT=stack arch/x86/core/stack.S | as --64 --divide --fatal-warnings -o bin-x86_64-efi/stack.o [ 3712s] arch/x86/core/stack.S: Assembler messages: [ 3712s] arch/x86/core/stack.S:3: Warning: 64bit mode not supported on `i386' (consider swapping .arch and .code directives). [ 3712s] {standard input}: Error: 1 warning, treating warnings as errors The problem (see below) is newly diagnosed, from upstream it's an error. I made binutils only emit a warning for this (as also other packages hit this), but unfortunately qemu iPXE sources are built with --fatal-warnings, so the demotion to warnings doesn't help here. The problem is the following. Assembly files using the '.arch i386' directive need to have their code-size set _beforehand_ to either 32bit or 16bit. The '--64' cmdline argument sets it to 64bit resulting in the error message. You cannot get rid of this cmdline argument (or replace it with --32) because then a different kind of ELF object file would be generated. So, what needs to happen is for such code: .arch i386 ... other directives ... .code16 # or .code32 to move (or add) the .codeXX directive in front of the .arch directive. I will momentarily attach a patch to do that in all files from the roms/ipxe subdir. I've verified that this fixes the error message and lets qemu 8.2.0 build with the new binutils. Tumbleweed (or at least the Staging:A) still uses qemu 8.1.something, but as the iPXE repo gets virtually no changes at all the patch should also apply to that tree as is. (The build-test happens in home:matz2:branches:Virtualization/qemu/15.5 ) Can I convince someone from the qemu team to please integrate this patch into the qemu package for at least tumbleweed? -- You are receiving this mail because: You are on the CC list for the bug.