Compiler options for GCC, clang and tcc
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@@ -1,5 +1,26 @@
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Help('''
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Type 'scons' to build and run all the available test cases.
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It will automatically detect your platform and C compiler and
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build appropriately.
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You can modify the behavious using following options:
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CC Name of C compiler
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CXX Name of C++ compiler
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CCFLAGS Flags to pass to the C compiler
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CXXFLAGS Flags to pass to the C++ compiler
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For example, for a clang build, use:
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scons CC=clang CXX=clang++
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''')
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import os
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env = Environment(ENV = {'PATH': os.environ['PATH']})
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env = Environment(ENV = os.environ)
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# Allow overriding the compiler with scons CC=???
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if 'CC' in ARGUMENTS: env.Replace(CC = ARGUMENTS['CC'])
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if 'CXX' in ARGUMENTS: env.Replace(CXX = ARGUMENTS['CXX'])
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if 'CFLAGS' in ARGUMENTS: env.Append(CCFLAGS = ARGUMENTS['CFLAGS'])
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if 'CXXFLAGS' in ARGUMENTS: env.Append(CCFLAGS = ARGUMENTS['CXXFLAGS'])
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# Add the builders defined in site_init.py
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add_nanopb_builders(env)
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@@ -35,21 +56,53 @@ if not env.GetOption('clean'):
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else:
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conf.env.Append(PROTOCPATH = '/usr/include')
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# Check if libmudflap is available (only with GCC)
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if 'gcc' in env['CC']:
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if conf.CheckLib('mudflap'):
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conf.env.Append(CCFLAGS = '-fmudflap')
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conf.env.Append(LINKFLAGS = '-lmudflap -fmudflap')
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# End the config stuff
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env = conf.Finish()
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# Initialize the CCFLAGS according to the compiler
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if 'cl' in env['CC']:
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if 'gcc' in env['CC']:
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# GNU Compiler Collection
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# Debug info, warnings as errors
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env.Append(CFLAGS = '-ansi -g -O0 -Wall -Werror --coverage -fstack-protector-all')
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env.Append(LINKFLAGS = '--coverage')
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# More strict checks on the nanopb core
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env.Append(CORECFLAGS = '-pedantic -Wextra -Wcast-qual -Wlogical-op -Wconversion')
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elif 'clang' in env['CC']:
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# CLang
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env.Append(CFLAGS = '-ansi -g -O0 -Wall -Werror')
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env.Append(CORECFLAGS = '-pedantic -Wextra -Wcast-qual -Wconversion')
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elif 'cl' in env['CC']:
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# Microsoft Visual C++
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# Debug info on, warning level 2 for tests, warnings as errors
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env.Append(CCFLAGS = '/Zi /W2 /WX')
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env.Append(CFLAGS = '/Zi /W2 /WX')
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env.Append(LINKFLAGS = '/DEBUG')
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# More strict checks on the nanopb core
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env.Append(CORECFLAGS = '/W4 /Za')
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# PB_RETURN_ERROR triggers C4127 because of while(0)
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env.Append(CCFLAGS = '/wd4127')
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env.Append(CFLAGS = '/wd4127')
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elif 'tcc' in env['CC']:
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# Tiny C Compiler
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env.Append(CFLAGS = '-Wall -Werror -g')
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env.SetDefault(CORECFLAGS = '')
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if 'clang++' in env['CXX']:
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env.Append(CXXFLAGS = '-g -O0 -Wall -Werror -Wextra -Wno-missing-field-initializers')
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elif 'g++' in env['CXX']:
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env.Append(CXXFLAGS = '-g -O0 -Wall -Werror -Wextra -Wno-missing-field-initializers')
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elif 'cl' in env['CXX']:
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env.Append(CXXFLAGS = '/Zi /W2 /WX')
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# Now include the SConscript files from all subdirectories
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SConscript(Glob('*/SConscript'), exports = 'env')
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@@ -9,6 +9,9 @@ env.NanopbProto("unittestproto")
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env.NanopbProto("person")
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# Binaries of the pb_decode.c and pb_encode.c
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env.Object("pb_decode.o", "#../pb_decode.c")
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env.Object("pb_encode.o", "#../pb_encode.c")
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# These are built using more strict warning flags.
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strict = env.Clone()
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strict.Append(CFLAGS = strict['CORECFLAGS'])
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strict.Object("pb_decode.o", "#../pb_decode.c")
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strict.Object("pb_encode.o", "#../pb_encode.c")
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