makes no-warn-rwx-segments check if compiler has the option

CMakeLists.txt

@@ -1,4 +1,6 @@
 cmake_minimum_required(VERSION 3.21)
+include(CheckLinkerFlag)
+
 project(mnrs-bsp LANGUAGES ASM C)
 set(LINKER_SCRIPT "${CMAKE_CURRENT_SOURCE_DIR}/env/${BOARD}/link.lds"
     CACHE FILEPATH "Linker script to use for BSP linking")
@@ -30,7 +32,13 @@ add_subdirectory(libwrap)
 add_library(bsp STATIC env/${BOARD}/init.c)
 target_link_libraries(bsp PUBLIC startup wrap)
 target_include_directories(bsp PUBLIC env/${BOARD})
-target_link_options(bsp INTERFACE LINKER:--no-warn-rwx-segments -nostartfiles -T ${LINKER_SCRIPT})
+
+check_linker_flag(C "LINKER:--no-warn-rwx-segments" HAS_NO_WARN_RWX_SEGMENTS)
+
+if(HAS_NO_WARN_RWX_SEGMENTS)
+    target_link_options(bsp INTERFACE LINKER:--no-warn-rwx-segments)
+endif()
+target_link_options(bsp INTERFACE LINKER: -nostartfiles -T ${LINKER_SCRIPT})
 
 if(SEMIHOSTING)
     target_include_directories(bsp INTERFACE include)