Hi All, I have two ARM arch (A9 and A15). and have cross compiler for both. Since code is integrated, some time .so got mixed(A9 with A15), and at run time it fails with undefined instruction. Is there any way to check strict at build time, we through an error. Scenario. (A15 code) + A9(.so)= executable when run on target (undefined instruction) Tag_CPU_name: "Cortex-A15" Tag_CPU_arch: v7 Tag_CPU_arch_profile: Application Tag_ARM_ISA_use: Yes Tag_CPU_name: "Cortex-A9" Tag_CPU_arch: v7 Tag_CPU_arch_profile: Application thanks