5.7.1 Options Specific to PIC32M Devices

The options shown in the table below are useful when compiling for Microchip PIC32M devices with the MPLAB XC32 compiler and are discussed in the sections that follow.

Table 5-4. PIC32M Device-Specific Options
Option	Definition
`-G num`	Specify the size threshold for placing permanent storage duration objects into the small data sections.
`-mappio-debug`	Enable the APPIN/APPOUT debugging library functions for the Microchip debugger and in-circuit emulator.
`-mcci`	Enable the Microchip Common C Interface compilation mode.
`-m[no-]check-zero-division`	Specifies whether to trap on integer division by zero.
`-mcodecov=options`	Instrument the output to provide code coverage information.
`-mdfp=path`	Specifies which device family pack to use.
`-dspr2`	Specifies use of revision 2 of the MIPS DSP ASE.
`-m[no-]embedded-data`	Specifies where objects are allocated.
`-mframe-header-opt`	Allows the compiler to omit a few instructions for functions not using their incoming frame header.
`-mgen-pie-static`	Generate position-independent code suitable for statically linking into a position-independent executable.
`-m[no-]interlink-compressed`	Generate code that is link compatible with MIPS16 and microMIPS code.
`-m[no-]jals`	Enable generation of microMIPS `jals` instructions, which have a shorter, 16-bit delay slot.
`-m[no-]long-calls`	Disable use of the `jal` instruction.
`-m[no-]memcpy`	Force the use of the `memcpy()`function for non-trivial block moves.
`-m[no-]micromips`	Generate microMIPS code.
`-[mno-]mips16`	Generate MIPS16 code.
`-mno-float`	Do not use libraries with software floating-point.
`-mno-hi-addr-opt`	Disables certain optimizations associated with the access of special function registers.
`-mperipheral-libs`	Specifies which peripheral libraries are linked to the project.
`-mprocessor`	Selects the target device for which to compile.
`-mreserve`	Specifies the address ranges of memory to be reserved.
`-msmart-io=[0\|1\|2]`	Controls the feature set of the IO library linked in.
`-mchp-stack-usage`	Generation of stack usage information and warnings.
`-mtext="scn-name"`	Redirects the `.text` section into a section with a user-defined name.
`-m[no-]uninit-const-in-rodata`	Place uninitialized `const`-qualified objects in the read-only data section.
`--nofallback`	Only the selected optimization level and with no license-imposed fall back to a lesser level.