How to pass a FLAG such as -DVERBOSE during a Bazel build command?

Question

I would like to do something like setting a macro name that activates portions of my code....

g++ -DVERBOSE=1 main.cc

during the Bazel build command:

bazel build //myproj:main

Is it possible?

Jin · Accepted Answer · 2019-12-09 07:20:40Z

1

bazel build //myproj:main --cxxopt=-DVERBOSE=1

Or, use the copts attribute in cc_* targets.

answered Dec 9, 2019 at 7:20

13.7k3 gold badges41 silver badges43 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Can you elaborate on how to use copts outside a BUILD file? The docs dont hint it is possible.