With glibc-2.23 and earlier (e.g. RHEL7), crash build fails with errors like this due to EM_RISCV undeclared: $ make -j 24 warn TARGET: X86_64 CRASH: 8.0.2++ GDB: 10.2 ... symbols.c: In function 'is_kernel': symbols.c:3746:8: error: 'EM_RISCV' undeclared (first use in this function) case EM_RISCV: ^ ... Define EM_RISCV as 243 [1][2] if not defined. [1] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=94e73c95d9b5 [2] http://www.sco.com/developers/gabi/latest/ch4.eheader.html Signed-off-by: Kazuhito Hagio <k-hagio-ab(a)nec.com&gt; --- defs.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/defs.h b/defs.h index d3d837631632..08ac4dc96a92 100644 --- a/defs.h +++ b/defs.h @@ -3493,6 +3493,10 @@ struct arm64_stackframe { #define _MAX_PHYSMEM_BITS 48 #endif /* MIPS64 */ +#ifndef EM_RISCV +#define EM_RISCV 243 +#endif + #ifdef RISCV64 #define _64BIT_ #define MACHINE_TYPE "RISCV64" -- 1.8.3.1