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-M, -MM

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

armclang executes only the preprocessor step of the compilation or assembly. 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.


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


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


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 >
armclang --target=arm-arm-none-eabi -march=armv8-a -M source.c -o
armclang --target=arm-arm-none-eabi -march=armv8-a -M source.c -MF
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