1.27 -M, -MM

Produces a list of makefile dependency rules suitable for use by a make utility.

The compiler executes only the preprocessor step of the compilation. By default, output is on the standard output stream.
If you specify multiple source files, a single dependency file is created.
-M lists both system header files and user header files.
-MM lists only user header files.

Note

The -MT option lets you override the target name in the dependency rules.

Note

To compile the source files and produce makefile dependency rules, use the -MD or -MMD option instead of the -M or -MM option respectively.

Example

You can redirect output to a file using standard UNIX and MS-DOS notation, the -o option, or the -MF option. For example:
armclang --target=arm-arm-none-eabi -march=armv8-a -M source.c > deps.mk
armclang --target=arm-arm-none-eabi -march=armv8-a -M source.c -o deps.mk
armclang --target=arm-arm-none-eabi -march=armv8-a -M source.c -MF deps.mk
Related reference
1.28 -MD, -MMD
1.29 -MF
1.32 -MT
1.44 -o
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