Debian Buster has upgraded gcc to version 8.1.
With gcc 8.1 I get an error when trying to build qemu-x86_defconfig
{standard input}: Assembler messages: {standard input}:7465: Error: junk at end of line, first unrecognized character is `@'
The problematic line in the generated assembler code is
.long end.6133@gotoff-start.6130@gotoff
This difference relates to the length of a linker generated list and is only needed for debugging. It is not generated when compiling without option -g.
Compilation on x86 works fine with gcc 7.3. gcc 7.3 simply does not generate the line at all.
To generate the complete assembler code use gcc with options -S -fverbose-asm.
Best regards
Heinrich
gcc -Wp,-MD,common/.command.o.d -nostdinc -isystem /usr/lib/gcc/x86_64-linux-gnu/8/include -Iinclude -I./arch/x86/include -include ./include/linux/kconfig.h -D__KERNEL__ -D__UBOOT__ -Wall -Wstrict-prototypes -Wno-format-security -fno-builtin -ffreestanding -std=gnu11 -fshort-wchar -Os -fno-stack-protector -fno-delete-null-pointer-checks -fmacro-prefix-map=./= -g -fstack-usage -Wno-format-nonliteral -Werror=date-time -fno-strict-aliasing -fomit-frame-pointer -fno-toplevel-reorder -fno-dwarf2-cfi-asm -march=i386 -m32 -mregparm=3 -D__I386__ -ffunction-sections -fvisibility=hidden -pipe -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(command)" -D"KBUILD_MODNAME=KBUILD_STR(command)" -c -o common/command.o common/command.c {standard input}: Assembler messages: {standard input}:7465: Error: junk at end of line, first unrecognized character is `@' {standard input}:10573: Error: junk at end of line, first unrecognized character is `@' {standard input}:10587: Error: junk at end of line, first unrecognized character is `@' {standard input}:7465: Error: can't resolve `end.6133' {.u_boot_list_2_cmd_3 section} - `start.6130' {.u_boot_list_2_cmd_1 section} {standard input}:10573: Error: can't resolve `end.6164' {.u_boot_list_2_cmd_3 section} - `start.6161' {.u_boot_list_2_cmd_1 section} {standard input}:10587: Error: can't resolve `end.6164' {.u_boot_list_2_cmd_3 section} - `start.6161' {.u_boot_list_2_cmd_1 section}