Firmware2/buildroot/share/PlatformIO/scripts/common-cxxflags.py
2022-08-29 19:17:31 -05:00

47 lines
1.7 KiB
Python

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