TASKING VX-toolset for ARM User Guide

Tool OptionsC compiler option: --cpu (-C)Menu entry1. Expand C/C++ Build and select Processor.2. From the Processor Selection list, make a selection by Architecture, Core or one of themanufacturers.Command line syntax--cpu=architecture-CarchitectureYou can specify the following architectures:ARMv6MARMv7MARMv7EMARMv7RCompile for ARMv6-M architectureCompile for ARMv7-M architectureCompile for ARMv7E-M architectureCompile for ARMv7-R architectureDescriptionWith this option you specify the ARM architecture for which you create your application. The ARM targetsupports more than one architecture and therefore you need to specify for which architecture the compilershould compile. The architecture determines which instructions are valid and which are not.You choose one of the following architectures: ARMv6-M, ARMv7-M, ARMv7E-M or ARMv7-R. Thecompiler sets the Thumb instruction set implicitly (option --thumb).The macro __CPU_arch__ is defined in the C source file. The arch is converted to uppercase.When you call the compiler from the command line, make sure you specify the same core type to theassembler to avoid conflicts!ExampleTo compile the file test.c for the ARMv7E-M processor type, enter the following on the command line:carm --cpu=ARMv7EM test.cThe compiler compiles for the chosen processor type.Related informationControl program option --cpu (Select architecture)Assembler option --cpu (Select architecture)305