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makefilesuppress-warnings

Inhibit all warnings from `make`

I am building Android AOSP on my server running Ubunty 16.04. I have all dependencies installed and the build completes fine. However, I get many Warnings from the make command each time. Is there a way to inhibit those from the console output (eg. via a parameter passed into the command). I have tried with some gcc flags in an attempt but the compiler either ignored them or threw errors due to unrecognised parameters.

Thank you for the kind help. Lorenzo

Solution

  • gcc has the -w option which suppresses all warnings. The warning has to be put after any other compiler flags. How you do that depend on the makefile recipes. A late CXXFLAGS += -w might work. Put the -w behind a by default empty variable and you can override from the make invocation.

    Makefile:

    ...
EXTRA_FLAGS ?=
# CXXFLAGS is a convention, your flag variables may be named differently
CXXFLAGS += $(EXTRA_FLAGS)

    Make invocation

    make my_target EXTRA_FLAGS="-w"

    You can also set the environment variable EXTRA_FLAGS to set implicitly for each invocation:

    export EXTRA_FLAGS="-w"
make my_target
export EXTRA_FLAGS=""
make my_target

    Caveats include conflict with -Werror but guessing you are not using that since it compiles with warnings.