Development Tools

2.5.1 Compile Options

The types and explanations for options of the compile phase are shown below.

Classification	Option	Description
Source Options	-lang	Specifies the language to assume in compiling the source file.
	-include	Specifies the names of folders that hold include files.
	-preinclude	Specifies the names of files to be included at the head of each compiling unit.
	-define	Specifies macro definitions.
	-undefine	Specifies disabling of predefined macros.
	-message	Information-level messages are output.
	-nomessage	Specifies the numbers of information-level messages to be disabled.
	-change_message	Changes the levels of compiler output messages.
	-no_warning [V2.08.00 or later]	Disables the output of warnings and information-level messages.
	-file_inline_path	Specifies the names of folders that hold files for inter-file inline expansion.
	-comment	Selects permission for comment (/* */) nesting.
	-truncated_address_initializer [V3.01.00 or later]	Allows 1-byte or 2-byte type external variables in C source files to be initialized by address values.
	-check	Checks compatibility with an existing program.
	-misra2004 [Professional Edition only]	Checks the source code against the MISRA-C: 2004 rules.
	-misra2012 [Professional Edition only] [V2.04.00 or later]	Checks the source code against the MISRA-C: 2012 rules.
	-ignore_files_misra [Professional Edition only]	Selects files that will not be checked against the MISRAC: 2004 rules or MISRA-C: 2012 rules.
	-check_language_extension [Professional Edition only]	Enables complete checking against the MISRA-C: 2004 rules or MISRA-C: 2012 rules for parts of the code where this would otherwise be suppressed due to use of an extended specification.
	-misra_intermodule [Professional Edition only] [V3.01.00 or later]	Checks the source code in multiple files against the MISRA-C:2012 rules.
Object Options	-output	Selects the output file type.
	-noline	Selects the non-output of #line in preprocessor expansion.
	-debug	Debugging information is output to the object files.
	-nodebug	Debugging information is not output to the object files.
	-g_line [V3.02.00 or later]	Enhances source debugging information during optimization.
	-section	Changes section names to be changed.
	-stuff	Variables are allocated to sections that match their alignment values.
	-nostuff	Alignment values of variables are ignored in allocating the variables to sections.
	-instalign4	Instructions at branch destinations are aligned with 4-byte boundaries.
	-instalign8	Instructions at branch destinations are aligned with 8-byte boundaries.
	-noinstalign	Instructions at branch destinations have no specific alignment.
	-nouse_div_inst	Generates code in which no DIV, DIVU, FDIV or DDIV instructions are used for division and modular division.
	-create_unfilled_area [V2.03.00 or later]	[To be supported by V2.03 and later versions] Makes spaces created by .OFFSET unfilled.
	-stack_protector/-stack_protector_all [Professional Edition only] [V2.04.00 or later]	This option generates a code for detection of stack smashing.
	-avoid_cross_boundary_prefetch [V2.07.00 or later]	Prevents the reading of data across 4-byte boundaries in prefetching for string manipulation instructions.
	-insert_nop_with_label [V2.08.00 or later]	This option inserts a local label and nop instruction.
	-control_flow_integrity [Professional Edition only] [V2.08.00 or later]	This option generates code for the detection of illegal indirect function calls.
List Options	-listfile	A source list file is output.
	-nolistfile	A source list file is not output.
	-show	Specifies the contents of the source list file.
Optimize Options (1/2)	-optimize	Selects the optimization level.
	-goptimize	Outputs additional information for inter-module optimization.
	-speed	Optimization is with emphasis on execution performance.
	-size	Optimization is with emphasis on code size.
	-loop	Specifies a maximum number for loop-expansion.
	-inline	Inline expansion is processed automatically.
	-noinline	Inline expansion is not processed automatically.
	-file_inline	Specifies a file for inter-file inline expansion.
	-case	Selects the method of expansion for switch statements.
	-volatile	External variables are handled as if they are all volatile qualified.
	-novolatile	External variables are handled as if none of them have been declared volatile.
	-type_size_access_to_volatile [V3.04.00 or later]	A variable with volatile specified is accessed in the size of the variable type.
	-const_copy	Enables constant propagation of const qualified external variables.
	-noconst_copy	Disables constant propagation of const qualified external variables.
	-const_div	Divisions and remainders of integer constants are converted into instruction sequences.
	-noconst_div	Divisions and remainders of integer constants are not converted into instruction sequences.
	-library	Selects the method for the execution of library functions.
	-scope	Selects division of the ranges for optimization into multiple sections before compilation.
	-noscope	Selects non-division of the ranges for optimization into multiple sections before compilation.
	-schedule	Pipeline processing is considered in scheduling instructions.
	-noschedule	Scheduling is not applied to instruction execution.
	-map	All access to external variables is optimized.
	-smap	Access to external variables is optimized as defined in the file to be compiled.
	-nomap	Access to external variables is not optimized.
	-approxdiv	Division of floating-point constants is converted into multiplication.
	-enable_register	Variables with the register storage class specification are given preference for allocation to registers.
Optimize Options (2/2)	-simple_float_conv	Part of the type conversion processing between the floating-point type and the integer type is omitted.
	-fpu	Single-precision floating-point processing instructions are used.
	-nofpu	Single-precision floating-point processing instructions are not used.
	-dpfpu [V3.01.00 or later]	Double-precision floating-point processing instructions are used.
	-nodpfpu [V3.01.00 or later]	Double-precision floating-point processing instructions are not used.
	-tfu [V3.01.00 or later]	Selects how the trigonometric function unit is to be used.
	-tfu_version [V3.05.00 or later]	Selects the version of the trigonometric function unit.
	-nosave_tfu [V3.05.00 or later]	A code for saving and restoring the output of the trigonometric function unit (v2) is not generated for interrupt functions.
	-alias	Optimization is performed in consideration of the types of data indicated by pointers.
	-float_order	The orders of operations in floating-point expressions are modified for optimization.
	-branch_chaining [V3.03.00 or later]	The branch instruction size is reduced for optimization.
	-nobranch_chaining [V3.03.00 or later]	The branch instruction size is not reduced for optimization.
	-ip_optimize	Selects global optimization.
	-merge_files	The results of compiling multiple source files are output to a single object file.
	-whole_program	Makes the compiler perform optimization on the assumption that all source files have been input.
Microcontroller Options	-isa	Selects the instruction-set architecture.
	-cpu	Selects the microcontroller type.
	-endian	Selects the endian type.
	-round	Selects the rounding method for floating-point constant operations.
	-denormalize	Selects the operation when denormalized numbers are used to describe floating-point constants.
	-dbl_size	Selects the precision of the double and long double types.
	-int_to_short	Replaces the int type with the short type and the unsigned int type with the unsigned short type.
	-signed_char	Variables of the char type are handled as signed char.
	-unsigned_char	Variables of the char type are handled as unsigned char.
	-signed_bitfield	The sign bits of bit-fields are taken as signed.
	-unsigned_bitfield	The sign bits of bit-fields are taken as unsigned.
	-auto_enum	Selects whether or not the sizes for enumerated types are automatically selected.
	-bit_order	Selects the order of bit-field members.
	-pack	Specifies one as the boundary alignment value for structure members and class members.
	-unpack	Aligns structure members and class members to the alignment boundaries for the given data types.
	-exception	Enables the exception handling function.
	-noexception	Disables the exception handling function.
	-rtti	Selects enabling or disabling of C++ runtime type information (dynamic_cast or typeid).
	-fint_register	Selects a general register for exclusive use with the fast interrupt function.
Microcontroller Options	-branch	Selects the maximum size or no maximum size for branches.
	-base	Specifies the base registers for ROM and RAM.
	-patch	Selects avoidance or non-avoidance of a problem specific to the CPU type.
	-pic	Enables the PIC function.
	-pid	Enables the PID function.
	-nouse_pid_register	The PID register is not used in code generation.
	-save_acc	The contents of ACC are saved and restored in interrupt functions.
Assemble and Linkage Options	-asmcmd	Specifies a subcommand file for asrx options.
	-lnkcmd	Specifies a subcommand file for rlink options.
	-asmopt	Specifies asrx options.
	-lnkopt	Specifies rlink options.
Other Options	-logo	Selects the output of copyright information.
	-nologo	Selects the non-output of copyright information.
	-euc	The character codes of input programs are interpreted as EUC codes.
	-sjis	The character codes of input programs are interpreted as SJIS codes.
	-latin1	The character codes of input programs are interpreted as ISO-Latin1 codes.
	-utf8	The character codes of input programs are interpreted as UTF-8 codes.
	-big5	The character codes of input programs are interpreted as BIG5 codes.
	-gb2312	The character codes of input programs are interpreted as GB2312 codes.
	-outcode	Selects the character coding for an output assembly-language file.
	-subcommand	Specifies a file for including command options.