cmake: armclang: Handle -mfpu=auto used by cortex-m55

arm-clang utilizes the gcc fpu flags, however -mfpu=auto is not a supported option in arm-clang. For arm-clang we can mimic the auto behavior by just not setting the -mfpu option. Signed-off-by: Kumar Gala <[email protected]>
cfriedt · Apr 27, 2023 · f30235f · f30235f
1 parent bfeb504
commit f30235f
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/cmake/compiler/armclang/target.cmake b/cmake/compiler/armclang/target.cmake
@@ -35,7 +35,9 @@ else()
   list(APPEND TOOLCHAIN_C_FLAGS -mabi=aapcs)
 
   if(CONFIG_FPU)
-    list(APPEND TOOLCHAIN_C_FLAGS   -mfpu=${GCC_M_FPU})
+    if(NOT "${GCC_M_FPU}" STREQUAL "auto")
+      list(APPEND TOOLCHAIN_C_FLAGS   -mfpu=${GCC_M_FPU})
+    endif()
     if    (CONFIG_FP_SOFTABI)
       list(APPEND TOOLCHAIN_C_FLAGS   -mfloat-abi=softfp)
     elseif(CONFIG_FP_HARDABI)