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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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