+if enabled aarch64; then
+
+ case $cpu in
+ armv*)
+ cpuflags="-march=$cpu"
+ ;;
+ *)
+ cpuflags="-mcpu=$cpu"
+ ;;
+ esac
+
+elif enabled alpha; then
+
+ cpuflags="-mcpu=$cpu"
+
+elif enabled arm; then
+
+ check_arm_arch() {
+ check_cpp_condition stddef.h \
+ "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
+ $cpuflags
+ }
+
+ probe_arm_arch() {
+ if check_arm_arch 4; then echo armv4;
+ elif check_arm_arch 4T; then echo armv4t;
+ elif check_arm_arch 5; then echo armv5;
+ elif check_arm_arch 5E; then echo armv5e;
+ elif check_arm_arch 5T; then echo armv5t;
+ elif check_arm_arch 5TE; then echo armv5te;
+ elif check_arm_arch 5TEJ; then echo armv5te;
+ elif check_arm_arch 6; then echo armv6;
+ elif check_arm_arch 6J; then echo armv6j;
+ elif check_arm_arch 6K; then echo armv6k;
+ elif check_arm_arch 6Z; then echo armv6z;
+ elif check_arm_arch 6ZK; then echo armv6zk;
+ elif check_arm_arch 6T2; then echo armv6t2;
+ elif check_arm_arch 7; then echo armv7;
+ elif check_arm_arch 7A 7_A; then echo armv7-a;
+ elif check_arm_arch 7R 7_R; then echo armv7-r;
+ elif check_arm_arch 7M 7_M; then echo armv7-m;
+ elif check_arm_arch 7EM 7E_M; then echo armv7-m;
+ elif check_arm_arch 8A 8_A; then echo armv8-a;
+ fi
+ }
+
+ [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
+
+ case $cpu in
+ armv*)
+ cpuflags="-march=$cpu"
+ subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
+ ;;
+ *)
+ cpuflags="-mcpu=$cpu"
+ case $cpu in
+ cortex-a*) subarch=armv7a ;;
+ cortex-r*) subarch=armv7r ;;
+ cortex-m*) enable thumb; subarch=armv7m ;;
+ arm11*) subarch=armv6 ;;
+ arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
+ armv4*|arm7*|arm9[24]*) subarch=armv4 ;;
+ *) subarch=$(probe_arm_arch) ;;
+ esac
+ ;;
+ esac
+
+ case "$subarch" in
+ armv5t*) enable fast_clz ;;
+ armv[6-8]*) enable fast_clz fast_unaligned ;;
+ esac
+
+elif enabled avr32; then
+
+ case $cpu in
+ ap7[02]0[0-2])
+ subarch="avr32_ap"
+ cpuflags="-mpart=$cpu"
+ ;;
+ ap)
+ subarch="avr32_ap"
+ cpuflags="-march=$cpu"
+ ;;
+ uc3[ab]*)
+ subarch="avr32_uc"
+ cpuflags="-mcpu=$cpu"
+ ;;
+ uc)
+ subarch="avr32_uc"
+ cpuflags="-march=$cpu"
+ ;;
+ esac
+
+elif enabled bfin; then
+
+ cpuflags="-mcpu=$cpu"
+
+elif enabled mips; then
+
+ cpuflags="-march=$cpu"
+