RealView Compilation Tools Compiler User Guide: A.2.1. Mapping ADS 1.2 compiler options to the new release

A.2.1. Mapping ADS 1.2 compiler options to the new release

Table A.2 describes options used by the ARM compiler in ADS 1.2 and the equivalent compiler options in the current release of RVCT. All the old compiler options listed in Table A.2 are obsolete in the latest release of RVCT and no longer supported.

If you are upgrading from ADS 1.2, use Table A.2 and Table A.3 to identify options that are no longer supported in the RVCT compiler, and to find new names for these flags in the latest release. You must migrate any use of old compiler options to the equivalent options in the latest release of the compiler.

Table A.2. Mapping of ADS 1.2 compiler options

ADS compiler option	Equivalent RVCT compiler option	Usage notes
`-ansi`	`--c90`	-
`-ansic`	`--c90`	-
`-apcs`	`--apcs`	-
`-apcs /[no]swstackcheck`	None	Software stack checking is obsolete in RVCT 3.0.
`-asm`	`--asm`	-
`-asm -fs`	`--asm --interleave`	-
`-auto_float_constants`	`--fpmode=std`	`--fpmode=std` is the default.
`-bigend`	`--bigend`	-
`-cpu name`	`--cpu=name`	-
`-cpp`	`--cpp`	-
`-depend filename`	`--depend=filename`	-
`-dll_vtbl`	`--export_all_vtbl`	-
`-dwarf2`	`--dwarf2`	-
`-Ec`	`--loose_implicit_cast`	-
`-embeddedcplusplus`	None	-
`-fa`	None	Data flow analysis feature on by default since RVCT 2.1.
`-fd`	`--sys_include`	-
`-fh`	None	-
`-fi`	None	-
`-fj`	None	-
`-fk`	`--kandr_include`	-
`-fp`	None	-
`-fpu name`	`--fpu=name`	-
`-fs`	`--interleave`	-
`-fu`	None	-
`-fv`	None	-
`-fx`	`--remarks` or `--strict_warnings`	-
`-fy`	`--enum_is_int`	-
`-g-`	`--no_debug`	-
`-g` `-g+`	`--debug`	-
`-gtp` `-gt-p`	`--no_debug_macros`	-
`-gt+p`	`--debug_macros`	-
`-jdir_list`	`-Jdir_list`	-
`-list`	`--list --no_depend_system_headers`	Option behavior has changed.
`-list -fi -fj`	`--list --depend_system_headers`	Option behavior has changed.
`-littleend`	`--littleend`	-
`-MD`	`--md`	-
`-memaccess`	`--no_unaligned_access`	-
`--no_inlinemax`	`--forceinline`	-
`-O[no_]autoinline`	`--[no_]autoinline`	-
`-Odata_reorder`	`--data_reorder`	-
`-O[no]inline`	`--[no_]inline`	-
`-O[no_]ldrd`	None	Selected automatically since RVCT 2.1 based on selected CPU or architecture variant.
`-Ono_autoinline`	`--no_autoinline`	-
`-Ono_data_reorder`	`--no_data_reorder`	-
`-Ono_inline`	`--no_inline`	-
`-S -fs`	`-S --interleave`	-
`-split_ldm`	`--split_ldm`	-
`-strict`	`--strict`	-
`--unix_depend_format`	`--depend_format=unix`	-
`-Wletter`	`--diag_suppress=tag`	Use `tag` to identify the number of the warning message to suppress. See Table A.3.
`-zasnumber`	`__align` keyword	-
`-zat`	`--min_array_alignment` or `__align` keyword	-
`-zc`	`--signed_chars`	-
`-zo`	`--split_sections`	-

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