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Help('''
Type 'scons' to build and run all the available test cases.
It will automatically detect your platform and C compiler and
build appropriately.
You can modify the behavious using following options:
CC Name of C compiler
CXX Name of C++ compiler
CCFLAGS Flags to pass to the C compiler
CXXFLAGS Flags to pass to the C++ compiler
For example, for a clang build, use:
scons CC=clang CXX=clang++
''')
import os
env = Environment(ENV = os.environ, tools = ['default', 'nanopb'])
# Allow overriding the compiler with scons CC=???
if 'CC' in ARGUMENTS: env.Replace(CC = ARGUMENTS['CC'])
if 'CXX' in ARGUMENTS: env.Replace(CXX = ARGUMENTS['CXX'])
if 'CFLAGS' in ARGUMENTS: env.Append(CCFLAGS = ARGUMENTS['CFLAGS'])
if 'CXXFLAGS' in ARGUMENTS: env.Append(CCFLAGS = ARGUMENTS['CXXFLAGS'])
# Add the builders defined in site_init.py
add_nanopb_builders(env)
# Path to the files shared by tests, and to the nanopb core.
env.Append(CPPPATH = ["#../", "$COMMON"])
# Path for finding nanopb.proto
env.Append(PROTOCPATH = '#../generator')
# Check the compilation environment, unless we are just cleaning up.
if not env.GetOption('clean'):
def check_ccflags(context, flags, linkflags = ''):
'''Check if given CCFLAGS are supported'''
context.Message('Checking support for CCFLAGS="%s"... ' % flags)
oldflags = context.env['CCFLAGS']
oldlinkflags = context.env['CCFLAGS']
context.env.Append(CCFLAGS = flags)
context.env.Append(LINKFLAGS = linkflags)
result = context.TryCompile("int main() {return 0;}", '.c')
context.env.Replace(CCFLAGS = oldflags)
context.env.Replace(LINKFLAGS = oldlinkflags)
context.Result(result)
return result
conf = Configure(env, custom_tests = {'CheckCCFLAGS': check_ccflags})
# If the platform doesn't support C99, use our own header file instead.
stdbool = conf.CheckCHeader('stdbool.h')
stdint = conf.CheckCHeader('stdint.h')
stddef = conf.CheckCHeader('stddef.h')
string = conf.CheckCHeader('string.h')
stdlib = conf.CheckCHeader('stdlib.h')
if not stdbool or not stdint or not stddef or not string:
conf.env.Append(CPPDEFINES = {'PB_SYSTEM_HEADER': '\\"pb_syshdr.h\\"'})
conf.env.Append(CPPPATH = "#../extra")
if stdbool: conf.env.Append(CPPDEFINES = {'HAVE_STDBOOL_H': 1})
if stdint: conf.env.Append(CPPDEFINES = {'HAVE_STDINT_H': 1})
if stddef: conf.env.Append(CPPDEFINES = {'HAVE_STDDEF_H': 1})
if string: conf.env.Append(CPPDEFINES = {'HAVE_STRING_H': 1})
if stdlib: conf.env.Append(CPPDEFINES = {'HAVE_STDLIB_H': 1})
# Check if we can use pkg-config to find protobuf include path
status, output = conf.TryAction('pkg-config protobuf --variable=includedir > $TARGET')
if status:
conf.env.Append(PROTOCPATH = output.strip())
else:
conf.env.Append(PROTOCPATH = '/usr/include')
# Check if libmudflap is available (only with GCC)
if 'gcc' in env['CC']:
if conf.CheckLib('mudflap'):
conf.env.Append(CCFLAGS = '-fmudflap')
conf.env.Append(LINKFLAGS = '-fmudflap')
# Check if we can use extra strict warning flags (only with GCC)
extra = '-Wcast-qual -Wlogical-op -Wconversion'
extra += ' -fstrict-aliasing -Wstrict-aliasing=1'
extra += ' -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls'
extra += ' -Wstack-protector '
if 'gcc' in env['CC']:
if conf.CheckCCFLAGS(extra):
conf.env.Append(CORECFLAGS = extra)
# Check if we can use undefined behaviour sanitizer (only with clang)
extra = '-fsanitize=undefined '
if 'clang' in env['CC']:
if conf.CheckCCFLAGS(extra, linkflags = extra):
conf.env.Append(CORECFLAGS = extra)
conf.env.Append(LINKFLAGS = extra)
# End the config stuff
env = conf.Finish()
# Initialize the CCFLAGS according to the compiler
if 'gcc' in env['CC']:
# GNU Compiler Collection
# Debug info, warnings as errors
env.Append(CFLAGS = '-ansi -pedantic -g -O0 -Wall -Werror -fprofile-arcs -ftest-coverage -fstack-protector-all')
env.Append(CORECFLAGS = '-Wextra')
env.Append(LINKFLAGS = '-g --coverage')
# We currently need uint64_t anyway, even though ANSI C90 otherwise..
env.Append(CFLAGS = '-Wno-long-long')
elif 'clang' in env['CC']:
# CLang
env.Append(CFLAGS = '-ansi -g -O0 -Wall -Werror')
env.Append(CORECFLAGS = ' -Wextra -Wcast-qual -Wconversion')
elif 'cl' in env['CC']:
# Microsoft Visual C++
# Debug info on, warning level 2 for tests, warnings as errors
env.Append(CFLAGS = '/Zi /W2 /WX')
env.Append(LINKFLAGS = '/DEBUG')
# More strict checks on the nanopb core
env.Append(CORECFLAGS = '/W4')
# PB_RETURN_ERROR triggers C4127 because of while(0)
env.Append(CFLAGS = '/wd4127')
elif 'tcc' in env['CC']:
# Tiny C Compiler
env.Append(CFLAGS = '-Wall -Werror -g')
env.SetDefault(CORECFLAGS = '')
if 'clang' in env['CXX']:
env.Append(CXXFLAGS = '-g -O0 -Wall -Werror -Wextra -Wno-missing-field-initializers')
elif 'g++' in env['CXX'] or 'gcc' in env['CXX']:
env.Append(CXXFLAGS = '-g -O0 -Wall -Werror -Wextra -Wno-missing-field-initializers')
elif 'cl' in env['CXX']:
env.Append(CXXFLAGS = '/Zi /W2 /WX')
# Now include the SConscript files from all subdirectories
import os.path
env['VARIANT_DIR'] = 'build'
env['BUILD'] = '#' + env['VARIANT_DIR']
env['COMMON'] = '#' + env['VARIANT_DIR'] + '/common'
for subdir in Glob('*/SConscript'):
SConscript(subdir, exports = 'env', variant_dir = env['VARIANT_DIR'] + '/' + os.path.dirname(str(subdir)))
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