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46 lines
1.7 KiB
46 lines
1.7 KiB
# |
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# common-cxxflags.py |
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# Convenience script to apply customizations to CPP flags |
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# |
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import pioutil |
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if pioutil.is_pio_build(): |
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Import("env") |
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cxxflags = [ |
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# "-Wno-incompatible-pointer-types", |
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# "-Wno-unused-const-variable", |
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# "-Wno-maybe-uninitialized", |
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# "-Wno-sign-compare" |
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] |
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if "teensy" not in env["PIOENV"]: |
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cxxflags += ["-Wno-register"] |
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env.Append(CXXFLAGS=cxxflags) |
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# |
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# Add CPU frequency as a compile time constant instead of a runtime variable |
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# |
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def add_cpu_freq(): |
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if "BOARD_F_CPU" in env: |
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env["BUILD_FLAGS"].append("-DBOARD_F_CPU=" + env["BOARD_F_CPU"]) |
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# Useful for JTAG debugging |
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# |
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# It will separate release and debug build folders. |
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# It useful to keep two live versions: a debug version for debugging and another for |
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# release, for flashing when upload is not done automatically by jlink/stlink. |
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# Without this, PIO needs to recompile everything twice for any small change. |
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if env.GetBuildType() == "debug" and env.get("UPLOAD_PROTOCOL") not in ["jlink", "stlink", "custom"]: |
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env["BUILD_DIR"] = "$PROJECT_BUILD_DIR/$PIOENV/debug" |
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def on_program_ready(source, target, env): |
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import shutil |
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shutil.copy(target[0].get_abspath(), env.subst("$PROJECT_BUILD_DIR/$PIOENV")) |
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env.AddPostAction("$PROGPATH", on_program_ready) |
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# On some platform, F_CPU is a runtime variable. Since it's used to convert from ns |
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# to CPU cycles, this adds overhead preventing small delay (in the order of less than |
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# 30 cycles) to be generated correctly. By using a compile time constant instead |
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# the compiler will perform the computation and this overhead will be avoided |
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add_cpu_freq()
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