Predefined macros like '__x86_64__', '__arm__', ... are used in systems headers (and surely at other places too). So, when appropriate, define the following symbols which seems to be somehow needed by glibc: m68k: __m68k__ mips: __mpis64, __mips ppc: __ppc64__, __powerpc, __ppc__ riscv: __riscv__, __riscv_xlen__ s390: __zarch__ sparc: __sparc_v9__, __sparcv9 x86-64: __x86_64__, __x86_64 Also, the following symbols, which were previously only defined in cgcc, are now defined in Sparse itself: i386 __i386, __i386__ sparc __sparc, __sparc__, __arch64__, __sparc64__, __sparcv9__ s390 __s390__, __s390x__ ppc __PPC__, __powerpc__, __PPC64__, __powerpc64__ arm __arm__ arm64 __aarch64__ Note: these are only tested on i386, x86-64, arm, arm64, mips64 (ABI O32), ppc, ppc64 (power7), ppc64el (power8) and sparc64, most of them on a not-so-new OS version. Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>