Darwin, Arm64 : Allow m64 on the command line.

It seems that some people have makefiles etc. that put '-m64' for arm64 Darwin. This is allowed by clang. For the GCC version we make it an alias of -mabi=darwinpcs.
iains · Feb 20, 2021 · a39175b · a39175b
1 parent 20137e3
commit a39175b
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/gcc/config/aarch64/aarch64.opt b/gcc/config/aarch64/aarch64.opt
@@ -155,6 +155,10 @@ Enum(aarch64_abi) String(lp64) Value(AARCH64_ABI_LP64)
 EnumValue
 Enum(aarch64_abi) String(darwinpcs) Value(AARCH64_ABI_LP64)
 
+m64
+Target RejectNegative Alias(mabi=, darwinpcs)
+On Darwin for compatibility with other platform variants.
+
 mpc-relative-literal-loads
 Target Save Var(pcrelative_literal_loads) Init(2) Save
 PC relative literal loads.