1 Help(''' 2 Type 'scons' to build and run all the available test cases. 3 It will automatically detect your platform and C compiler and 4 build appropriately. 5 6 You can modify the behavious using following options: 7 CC Name of C compiler 8 CXX Name of C++ compiler 9 CCFLAGS Flags to pass to the C compiler 10 CXXFLAGS Flags to pass to the C++ compiler 11 12 For example, for a clang build, use: 13 scons CC=clang CXX=clang++ 14 ''') 15 16 import os 17 env = Environment(ENV = os.environ, tools = ['default', 'nanopb']) 18 19 # Allow overriding the compiler with scons CC=??? 20 if 'CC' in ARGUMENTS: env.Replace(CC = ARGUMENTS['CC']) 21 if 'CXX' in ARGUMENTS: env.Replace(CXX = ARGUMENTS['CXX']) 22 if 'CCFLAGS' in ARGUMENTS: env.Append(CCFLAGS = ARGUMENTS['CCFLAGS']) 23 if 'CXXFLAGS' in ARGUMENTS: env.Append(CXXFLAGS = ARGUMENTS['CXXFLAGS']) 24 25 # Add the builders defined in site_init.py 26 add_nanopb_builders(env) 27 28 # Path to the files shared by tests, and to the nanopb core. 29 env.Append(CPPPATH = ["#../", "$COMMON"]) 30 31 # Path for finding nanopb.proto 32 env.Append(PROTOCPATH = '#../generator') 33 34 # Check the compilation environment, unless we are just cleaning up. 35 if not env.GetOption('clean'): 36 def check_ccflags(context, flags, linkflags = ''): 37 '''Check if given CCFLAGS are supported''' 38 context.Message('Checking support for CCFLAGS="%s"... ' % flags) 39 oldflags = context.env['CCFLAGS'] 40 oldlinkflags = context.env['CCFLAGS'] 41 context.env.Append(CCFLAGS = flags) 42 context.env.Append(LINKFLAGS = linkflags) 43 result = context.TryCompile("int main() {return 0;}", '.c') 44 context.env.Replace(CCFLAGS = oldflags) 45 context.env.Replace(LINKFLAGS = oldlinkflags) 46 context.Result(result) 47 return result 48 49 conf = Configure(env, custom_tests = {'CheckCCFLAGS': check_ccflags}) 50 51 # If the platform doesn't support C99, use our own header file instead. 52 stdbool = conf.CheckCHeader('stdbool.h') 53 stdint = conf.CheckCHeader('stdint.h') 54 stddef = conf.CheckCHeader('stddef.h') 55 string = conf.CheckCHeader('string.h') 56 stdlib = conf.CheckCHeader('stdlib.h') 57 if not stdbool or not stdint or not stddef or not string: 58 conf.env.Append(CPPDEFINES = {'PB_SYSTEM_HEADER': '\\"pb_syshdr.h\\"'}) 59 conf.env.Append(CPPPATH = "#../extra") 60 61 if stdbool: conf.env.Append(CPPDEFINES = {'HAVE_STDBOOL_H': 1}) 62 if stdint: conf.env.Append(CPPDEFINES = {'HAVE_STDINT_H': 1}) 63 if stddef: conf.env.Append(CPPDEFINES = {'HAVE_STDDEF_H': 1}) 64 if string: conf.env.Append(CPPDEFINES = {'HAVE_STRING_H': 1}) 65 if stdlib: conf.env.Append(CPPDEFINES = {'HAVE_STDLIB_H': 1}) 66 67 # Check if we can use pkg-config to find protobuf include path 68 status, output = conf.TryAction('pkg-config protobuf --variable=includedir > $TARGET') 69 if status: 70 conf.env.Append(PROTOCPATH = output.strip()) 71 else: 72 conf.env.Append(PROTOCPATH = '/usr/include') 73 74 # Check if libmudflap is available (only with GCC) 75 if 'gcc' in env['CC']: 76 if conf.CheckLib('mudflap'): 77 conf.env.Append(CCFLAGS = '-fmudflap') 78 conf.env.Append(LINKFLAGS = '-fmudflap') 79 80 # Check if we can use extra strict warning flags (only with GCC) 81 extra = '-Wcast-qual -Wlogical-op -Wconversion' 82 extra += ' -fstrict-aliasing -Wstrict-aliasing=1' 83 extra += ' -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls' 84 extra += ' -Wstack-protector ' 85 if 'gcc' in env['CC']: 86 if conf.CheckCCFLAGS(extra): 87 conf.env.Append(CORECFLAGS = extra) 88 89 # Check if we can use undefined behaviour sanitizer (only with clang) 90 extra = '-fsanitize=undefined ' 91 if 'clang' in env['CC']: 92 if conf.CheckCCFLAGS(extra, linkflags = extra): 93 conf.env.Append(CORECFLAGS = extra) 94 conf.env.Append(LINKFLAGS = extra) 95 96 # End the config stuff 97 env = conf.Finish() 98 99 # Initialize the CCFLAGS according to the compiler 100 if 'gcc' in env['CC']: 101 # GNU Compiler Collection 102 103 # Debug info, warnings as errors 104 env.Append(CFLAGS = '-ansi -pedantic -g -Wall -Werror -fprofile-arcs -ftest-coverage -fstack-protector-all') 105 env.Append(CORECFLAGS = '-Wextra') 106 env.Append(LINKFLAGS = '-g --coverage') 107 108 # We currently need uint64_t anyway, even though ANSI C90 otherwise.. 109 env.Append(CFLAGS = '-Wno-long-long') 110 elif 'clang' in env['CC']: 111 # CLang 112 env.Append(CFLAGS = '-ansi -g -Wall -Werror') 113 env.Append(CORECFLAGS = ' -Wextra -Wcast-qual -Wconversion') 114 elif 'cl' in env['CC']: 115 # Microsoft Visual C++ 116 117 # Debug info on, warning level 2 for tests, warnings as errors 118 env.Append(CFLAGS = '/Zi /W2 /WX') 119 env.Append(LINKFLAGS = '/DEBUG') 120 121 # More strict checks on the nanopb core 122 env.Append(CORECFLAGS = '/W4') 123 124 # PB_RETURN_ERROR triggers C4127 because of while(0) 125 env.Append(CFLAGS = '/wd4127') 126 elif 'tcc' in env['CC']: 127 # Tiny C Compiler 128 env.Append(CFLAGS = '-Wall -Werror -g') 129 130 env.SetDefault(CORECFLAGS = '') 131 132 if 'clang' in env['CXX']: 133 env.Append(CXXFLAGS = '-g -Wall -Werror -Wextra -Wno-missing-field-initializers') 134 elif 'g++' in env['CXX'] or 'gcc' in env['CXX']: 135 env.Append(CXXFLAGS = '-g -Wall -Werror -Wextra -Wno-missing-field-initializers') 136 elif 'cl' in env['CXX']: 137 env.Append(CXXFLAGS = '/Zi /W2 /WX') 138 139 # Now include the SConscript files from all subdirectories 140 import os.path 141 env['VARIANT_DIR'] = 'build' 142 env['BUILD'] = '#' + env['VARIANT_DIR'] 143 env['COMMON'] = '#' + env['VARIANT_DIR'] + '/common' 144 for subdir in Glob('*/SConscript'): 145 SConscript(subdir, exports = 'env', variant_dir = env['VARIANT_DIR'] + '/' + os.path.dirname(str(subdir))) 146 147
