-marm and -mthumb are opposites: one cancels out the other. This patch marks them as such so that the driver will eliminate all but the last option on the command line. This aids multilib selection which otherwise can get confused if both are present.
* config/arm/arm.opt (marm): Mark as the negative of of -mthumb. (mthumb): Mark as the negative of -marm. R.
diff --git a/gcc/config/arm/arm.opt b/gcc/config/arm/arm.opt index efee1be..dad5257 100644 --- a/gcc/config/arm/arm.opt +++ b/gcc/config/arm/arm.opt @@ -91,7 +91,7 @@ EnumValue Enum(arm_arch) String(native) Value(-1) DriverOnly marm -Target Report RejectNegative InverseMask(THUMB) +Target Report RejectNegative Negative(mthumb) InverseMask(THUMB) Generate code in 32 bit ARM state. mbig-endian @@ -195,7 +195,7 @@ Target RejectNegative Joined UInteger Var(arm_structure_size_boundary) Init(DEFA Specify the minimum bit alignment of structures. mthumb -Target Report RejectNegative Mask(THUMB) Save +Target Report RejectNegative Negative(marm) Mask(THUMB) Save Generate code for Thumb state. mthumb-interwork