On 10/3/26 1:32 PM, Dave Young wrote: Copy some comments here, but please make sure to send plain text inline patch as above (use git send-email for safe if you are not sure how to setup email clients). /* necessary header files */ typedef unsigned int u32; +#if defined(X86_64) && !defined(__x86_64__) +#include "lkcd_x86_64_pt_regs.h" /* for pt_regs */ +#else #include <asm/ptrace.h> /* for pt_regs */ +#endif Above chunk is unreachable. That #include sits inside below if condition: #if defined(ARM) || defined(X86) || defined(PPC) || defined(S390) || \ defined(S390X) || defined(ARM64) || defined(MIPS) || \ defined(MIPS64) || defined(SPARC64) || defined(RISCV64) || \ defined(LOONGARCH64) 2. Remove TARGET_CFLAGS_X86_64_ON_ARM64 as it is identical to the TARGET_CFLAGS_X86_64 3. machine_type("X86") in filesys.c is unreachable: configure.c never allows target=X86 on an arm64 host. Harmless defensive symmetry. 4. lkcd_x86_64_pt_regs.h: Copyright line is wrong (2025), please remove or update it.

without it, would be wrong gdb arch and wrong build after native arm64 build, so it directly related $ make target=x86_64 lzo snappy zstd TARGET: ARM64 CRASH: 9.0.3++ GDB: 16.2 gcc -c -g -DARM64 -DLZO -DSNAPPY -DZSTD -DGDB_16_2 build_data.c gcc -c -g -DARM64 -DLZO -DSNAPPY -DZSTD -DGDB_16_2 diskdump.c ar -rs crashlib.a main.o tools.o global_data.o memory.o filesys.o help.o task.o build_data.o kernel.o test.o gdb_interface.o net.o dev.o bpf.o printk.o alpha.o x86.o ppc.o ia64.o s390.o s390x.o s390dbf.o ppc64.o x86_64.o arm.o arm64.o mips.o mips64.o riscv64.o loongarch64.o sparc64.o extensions.o remote.o va_server.o va_server_v1.o symbols.o cmdline.o lkcd_common.o lkcd_v1.o lkcd_v2_v3.o lkcd_v5.o lkcd_v7.o lkcd_v8.o lkcd_fix_mem.o s390_dump.o netdump.o diskdump.o makedumpfile.o xendump.o lkcd_x86_trace.o unwind_v1.o unwind_v2.o unwind_v3.o unwind_x86_32_64.o unwind_arm.o xen_hyper.o xen_hyper_command.o xen_hyper_global_data.o xen_hyper_dump_tables.o kvmdump.o qemu.o qemu-load.o sadump.o ipcs.o ramdump.o vmware_vmss.o vmware_guestdump.o xen_dom0.o kaslr_helper.o sbitmap.o maple_tree.o lzorle_decompress.o make[4]: warning: Clock skew detected. Your build may be incomplete. CXXLD gdb instead of $make target=x86_64 lzo snappy zstd The initial build in this source tree was for the ARM64 architecture. In order to build a crash binary for the X86_64 architecture: 1. remove the gdb-16.2 subdirectory 2. perform a "make clean" 3. retry the build make: *** [Makefile:306: all] Error 1