File: SConscript.target.freertos-stm32

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import os

Import('env')

# Target specific SCons command line variables
vars = Variables()
vars.Add(BoolVariable('AJWSL',             'Compile driver for the QCA4004 for a specific platform', os.environ.get('AJ_AJWSL',              True)))
vars.Add(PathVariable('STM_SRC_DIR',       'Path to the source code for the STM32 microcontroller',  os.environ.get('AJ_STM_SRC_DIR'),       PathVariable.PathIsDir))
vars.Add(PathVariable('ARM_TOOLCHAIN_DIR', 'Path to the ARM Toolchain',                              os.environ.get('AJ_ARM_TOOLCHAIN_DIR'), PathVariable.PathIsDir))
vars.Add(PathVariable('FREE_RTOS_DIR',     'Directory to FreeRTOS source code',                      os.environ.get('AJ_FREE_RTOS_DIR'),        PathVariable.PathIsDir))
vars.Update(env)
Help(vars.GenerateHelpText(env))

# Disable building unit tests
env['build_unit_tests'] = False

# Update environment
if env.has_key('ARM_TOOLCHAIN_DIR'):
    env['ENV']['PATH'] = ';'.join([ env['ENV']['PATH'], env['ARM_TOOLCHAIN_DIR'] ])

# Cross compile setup
cross_prefix = 'arm-none-eabi-'
env.Replace(CC = cross_prefix + 'gcc')
env.Replace(CXX = cross_prefix + 'g++')
env.Replace(LINK = cross_prefix + 'gcc')
env.Replace(AR = cross_prefix + 'ar')
env.Replace(RANLIB = cross_prefix + 'ranlib')

env.Replace(CCCOM           = '$CC -o $TARGET -c $CFLAGS $CCFLAGS $_CCCOMCOM $SOURCES')
env.Replace(CPPDEFPREFIX    = '-D')
env.Replace(OBJSUFFIX       = '.o')
env.Replace(INCPREFIX       = '-I')
env.Replace(LIBDIRPREFIX    = '-L')
env.Replace(LIBPREFIX       = 'lib')
env.Replace(LIBSUFFIX       = '.a')
env.Replace(PROGPREFIX      = '')
env.Replace(PROGSUFFIX      = '.elf')
env.Replace(LIBDIRSUFFIX    = '')
env.Replace(LIBLINKPREFIX   = '-l')
env.Replace(LIBLINKSUFFIX   = '')
env.Replace(LINKCOM         = '$LINK -o $TARGET $LINKFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS $_LIBFLAGS')
env.Replace(LINKFLAGS       = '')
env.Replace(CCFLAGS         = '')
env.Replace(ARFLAGS         = 'rc')
env.Replace(ARCOM           = '$AR $ARFLAGS $TARGET $SOURCES')
env.Replace(ASCOM           = '$CC -o $TARGET -c $CFLAGS $CCFLAGS $_CCCOMCOM $SOURCES')

# This was done because scons creates a link file to feed into the linker
# and arm-none-eabi removes '\' when interpreting a linker file. This
# prevents scons from creating a link file and just feeding the command line
# options directly to the compiler/linker
env['MAXLINELENGTH'] = 10000

# Compiler flags
env.Append(CFLAGS = [
    '-std=gnu99',
    '-pipe',
    '-mcpu=cortex-m3',
    '-mthumb',
    '-mlong-calls',
    '-fdata-sections',
    '-ffunction-sections',
    '-fno-strict-aliasing',
    '-Wall',
    '-Waggregate-return',
    '-Wbad-function-cast',
    '-Wcast-align',
    '-Wfloat-equal',
    '-Wformat=2',
    '-Wno-deprecated-declarations',
    '-Wno-unknown-pragmas',
    '-Wpacked',
    '-Wpointer-arith',
    '-Wshadow',
    '-Wundef',
    '-Wformat-security',
    '-Werror=format-security',
    '-Wwrite-strings'
])
env.Append(CPPDEFINES = {
    'STM32F407xx'             : None,
    'USE_STDPERIPH_DRIVER'    : None,
    'HAL_UART_MODULE_ENABLED' : None,
    'HAL_RCC_MODULE_ENABLED'  : None,
    'HAL_GPIO_MODULE_ENABLED' : None,
    'HAL_USART_MODULE_ENABLED': None,
    'HAL_FLASH_MODULE_ENABLED': None,
    '_FORTIFY_SOURCE':          '1'
})

# Linker flags
env.Append(LINKFLAGS = [
    '-mthumb',
    '-Wl,--start-group',
    '-lm',
    '-lc',
    '-Wl,--end-group',
    '-Wl,--gc-sections',
    '-Wl,-Map,${TARGET.base}.map',
    '-mcpu=cortex-m3',
    '-T' + env['STM_SRC_DIR'] + 'Project/Peripheral_Examples/SysTick/TrueSTUDIO/SysTick/stm32_flash.ld',
    '-Wl,--entry=Reset_Handler'
])

# Add in extra non standard include files
env.Install('#dist/include/ajtcl', Glob('src/wsl/*.h'))
env.Install('#dist/include/ajtcl', Glob('src/target/freertos-stm32/*.h'))
env.Install('#dist/include/ajtcl', Glob('src/freertos/*.h'))
env.Install('#dist/include/ajtcl', Glob('src/bsp/*.h'))

# The STM32 software pack requires that you provide "stm32f4xx_conf.h" as a
# configurable header file.  Install that file to '#dist/include' where it will
# be found via the normal -I flags test SCons files use.
env.Install('#dist/include', Glob('src/target/freertos-stm32/stm32/*.h'))

env.Append(CPPPATH = Dir(['src/bsp']))
env.Append(CPPPATH = Dir([env['FREE_RTOS_DIR'] + '/Source/include',
                          env['FREE_RTOS_DIR'] + '/Source/portable/GCC/ARM_CM3',
                          env['STM_SRC_DIR'] + 'Utilities/STM32F4-Discovery',
                          env['STM_SRC_DIR'] + 'Libraries/CMSIS/ST/STM32F4xx/Include',
                          env['STM_SRC_DIR'] + 'Libraries/CMSIS/Include',
                          env['STM_SRC_DIR'] + 'Libraries/STM32F4xx_StdPeriph_Driver/inc']))

# Debug/Release Variants
if env['VARIANT'] == 'debug':
    env.Append(CFLAGS = '-g3')
else:
    env.Append(CFLAGS = '-Os')
    env.Append(LINKFLAGS = '-s')

env['build_shared'] = False
#env['connectivity_options'] = [ 'tcp', 'ardp' ]