CompilerFlags.py

# This file sets additional flags that cannot be set from platformio.ini itself
# these can be for the compiler or for the linker
import configparser
import subprocess
import re

# load build environment
print("\n==================== CompilerFlags.py ====================")
l = lambda *args, **kwargs : print("[CompilerFlags.py]", *args, **kwargs)

Import("env")

# read settings from platform.ini to also include
conf = configparser.ConfigParser()
conf.read("platformio.ini")
env_name = "env:" + env.subst("$PIOENV")
opt = conf.get(env_name, "optimization")

git_branch_name = subprocess.check_output(['git', 'rev-parse', '--abbrev-ref', 'HEAD']).decode('ascii').strip()
git_commit_date = subprocess.check_output(['git', 'show', '-s', '--date=format:%d/%m/%Y', '--format=%cd', 'HEAD']).decode('ascii').strip()
git_commit_hash = subprocess.check_output(['git', 'show', '-s', '--format=%h', 'HEAD']).decode('ascii').strip()
git_commit_msg  = subprocess.check_output(['git', 'show', '-s', '--format=%s', 'HEAD']).decode('ascii').strip()

git_string = f"{git_branch_name} {git_commit_hash} | {git_commit_date} | {git_commit_msg}"
git_string = re.sub('-', '_', git_string)
git_string = re.sub(r'[^a-zA-Z0-9 /_.]', '', git_string)
l(git_string)

#STMF767 microcontroller
if (env_name == "env:top_board"): 
  # compiler settings
  env.Append(
    CCFLAGS=[
      f"-D__GIT_STRING__={git_string}",
      f"-D__GIT_DEVELOPMENT__=\"{[0, 1][git_branch_name == 'main']}\"",
      opt,
      # "-std=c11",
      # "-g3",
      "-Wall",
      # "-Wextra",
      # "-Wconversion",
      # "-pedantic",
      "-mcpu=cortex-m7",
      "-mfloat-abi=hard",
      "-mfpu=fpv5-sp-d16",
      "-D ARM_MATH_CM7",
      "-DARM_MATH_MATRIX_CHECK",
      "-D __FPU_PRESENT",
      "-mthumb",
      "-mthumb-interwork",
      "-ffunction-sections",
      "-fdata-sections",
      "-fmessage-length=0",
      "-specs=nosys.specs",
      "-specs=nano.specs",
      "-DUSE_HAL_DRIVER",
      "-DSTM32F767xx",
    ]
  )

  # linker settings
  env.Append(
    LINKFLAGS=[
      opt,
      "-mfloat-abi=hard",
      "-mfpu=fpv5-sp-d16",
      "-Wl,-u,_printf_float,-u,_scanf_float"
    ]
  )
#STMF303 microcontroller
else: 
  # compiler settings
  env.Append(
    CCFLAGS=[
      f"-D__GIT_STRING__={git_string}",
      f"-D__GIT_DEVELOPMENT__=\"{[0, 1][git_branch_name == 'main']}\"",
      opt,
      # "-std=c11",
      # "-g3",
      "-Wall",
      # "-Wextra",
      # "-Wconversion",
      # "-pedantic",
      "-mcpu=cortex-m4",
      "-mfloat-abi=hard",
      "-mfpu=fpv4-sp-d16",
      "-D ARM_MATH_CM4",
      "-DARM_MATH_MATRIX_CHECK",
      "-D __FPU_PRESENT",
      "-mthumb",
      "-mthumb-interwork",
      "-ffunction-sections",
      "-fdata-sections",
      "-fmessage-length=0",
      "-specs=nosys.specs",
      "-specs=nano.specs",
      "-DUSE_HAL_DRIVER",
      "-DSTM32F303x8",
    ]

  )

  # linker settings
  env.Append(
    LINKFLAGS=[
      opt,
      "-mfloat-abi=hard",
      "-mfpu=fpv4-sp-d16",
      "-Wl,-u,_printf_float,-u,_scanf_float"
    ]
  )

print("\n")