remove nios2 support

Marked as obsolete in gcc 14.2 and will be removed in gcc 15. Also
removed from various host tools like qemu and will be removed from
zephyr.

Signed-off-by: Anas Nashif <[email protected]>

Author: nashif

.github/workflows/ci.yml

@@ -48,7 +48,6 @@ on:
         - arm-zephyr-eabi
         - microblazeel-zephyr-elf
         - mips-zephyr-elf
-        - nios2-zephyr-elf
         - riscv64-zephyr-elf
         - rx-zephyr-elf
         - sparc-zephyr-elf
@@ -170,7 +169,6 @@ jobs:
             arm-zephyr-eabi)                      build_target_arm_zephyr_eabi="y";;
             microblazeel-zephyr-elf)              build_target_microblazeel_zephyr_elf="y";;
             mips-zephyr-elf)                      build_target_mips_zephyr_elf="y";;
-            nios2-zephyr-elf)                     build_target_nios2_zephyr_elf="y";;
             riscv64-zephyr-elf)                   build_target_riscv64_zephyr_elf="y";;
             rx-zephyr-elf)                        build_target_rx_zephyr_elf="y";;
             sparc-zephyr-elf)                     build_target_sparc_zephyr_elf="y";;
@@ -220,7 +218,6 @@ jobs:
           build_target_arm_zephyr_eabi="y"
           build_target_microblazeel_zephyr_elf="y"
           build_target_mips_zephyr_elf="y"
-          build_target_nios2_zephyr_elf="y"
           build_target_riscv64_zephyr_elf="y"
           build_target_rx_zephyr_elf="y"
           build_target_sparc_zephyr_elf="y"
@@ -310,7 +307,6 @@ jobs:
         [ "${build_target_arm_zephyr_eabi}" == "y" ]                      && MATRIX_TARGETS+='"arm-zephyr-eabi",'
         [ "${build_target_microblazeel_zephyr_elf}" == "y" ]              && MATRIX_TARGETS+='"microblazeel-zephyr-elf",'
         [ "${build_target_mips_zephyr_elf}" == "y" ]                      && MATRIX_TARGETS+='"mips-zephyr-elf",'
-        [ "${build_target_nios2_zephyr_elf}" == "y" ]                     && MATRIX_TARGETS+='"nios2-zephyr-elf",'
         [ "${build_target_riscv64_zephyr_elf}" == "y" ]                   && MATRIX_TARGETS+='"riscv64-zephyr-elf",'
         [ "${build_target_rx_zephyr_elf}" == "y" ]                        && MATRIX_TARGETS+='"rx-zephyr-elf",'
         [ "${build_target_sparc_zephyr_elf}" == "y" ]                     && MATRIX_TARGETS+='"sparc-zephyr-elf",'
@@ -1560,9 +1556,6 @@ jobs:
             mips-zephyr-elf)
               PLATFORM_ARGS+="-p qemu_malta "
               ;;
-            nios2-zephyr-elf)
-              PLATFORM_ARGS+="-p qemu_nios2 "
-              ;;
             riscv64-zephyr-elf)
               PLATFORM_ARGS+="-p qemu_riscv32 "
               PLATFORM_ARGS+="-p qemu_riscv32e "

cmake/zephyr/target.cmake

@@ -7,7 +7,6 @@ else()
   set(CROSS_COMPILE_TARGET_arm         arm-zephyr-eabi)
 endif()
 set(CROSS_COMPILE_TARGET_arm64   aarch64-zephyr-elf)
-set(CROSS_COMPILE_TARGET_nios2     nios2-zephyr-elf)
 set(CROSS_COMPILE_TARGET_riscv   riscv64-zephyr-elf)
 set(CROSS_COMPILE_TARGET_mips       mips-zephyr-elf)
 set(CROSS_COMPILE_TARGET_rx           rx-zephyr-elf)