MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs ... - Microchip

16-Bit C Compiler User’s Guide
TABLE 3-11: PREPROCESSOR OPTIONS (CONTINUED)
Option Definition
-MP This option instructs CPP to add a phony target for each dependency
other than the main file, causing each to depend on nothing.
These dummy rules work around errors make gives if you
remove header files without updating the make-file to match.
This is typical output:
test.o: test.c test.h
test.h:
-MQ Same as -MT, but it quotes any characters which are special to
make.
-MQ '$(objpfx)foo.o' gives $$(objpfx)foo.o:
foo.c
The default target is automatically quoted, as if it were given
with -MQ.
-MT target Change the target of the rule emitted by dependency
generation. By default, CPP takes the name of the main input
file, including any path, deletes any file suffix such as .c, and
appends the platform’s usual object suffix. The result is the
target.
An -MT option will set the target to be exactly the string you
specify. If you want multiple targets, you can specify them as a
single argument to -MT, or use multiple -MT options.
For example:
-MT '$(objpfx)foo.o' might give $(objpfx)foo.o:
foo.c
-nostdinc Do not search the standard system directories for header files.
Only the directories you have specified with -I options (and the
current directory, if appropriate) are searched. (See
Section 3.5.10 “Options for Directory Search”) for
information on -I.
By using both -nostdinc and -I-, the include-file search
path can be limited to only those directories explicitly specified.
-P Tell the preprocessor not to generate #line directives. Used
with the -E option (see Section 3.5.2 “Options for
Controlling the Kind of Output”).
-trigraphs Support ANSI C trigraphs. The -ansi option also has this
effect.
-Umacro Undefine macro macro. -U options are evaluated after all -D
options, but before any -include and -imacros options.
-undef Do not predefine any nonstandard macros (including
architecture flags).
3.5.8 Options for Assembling
The following options control assembler operations.
TABLE 3-12: ASSEMBLY OPTIONS
Option Definition
-Wa,option Pass option as an option to the assembler. If option contains
commas, it is split into multiple options at the commas.
DS51284H-page 54 © 2008 Microchip Technology Inc.