| # Copyright (c) 2016, 2017 ARM Limited. |
| # |
| # SPDX-License-Identifier: MIT |
| # |
| # Permission is hereby granted, free of charge, to any person obtaining a copy |
| # of this software and associated documentation files (the "Software"), to |
| # deal in the Software without restriction, including without limitation the |
| # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| # sell copies of the Software, and to permit persons to whom the Software is |
| # furnished to do so, subject to the following conditions: |
| # |
| # The above copyright notice and this permission notice shall be included in all |
| # copies or substantial portions of the Software. |
| # |
| # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| # SOFTWARE. |
| |
| import SCons |
| import os |
| import subprocess |
| |
| def version_at_least(version, required): |
| end = min(len(version), len(required)) |
| |
| for i in range(0, end, 2): |
| if int(version[i]) < int(required[i]): |
| return False |
| elif int(version[i]) > int(required[i]): |
| return True |
| |
| return True |
| |
| vars = Variables("scons") |
| vars.AddVariables( |
| BoolVariable("debug", "Debug", False), |
| BoolVariable("asserts", "Enable asserts (this flag is forced to 1 for debug=1)", False), |
| BoolVariable("logging", "Logging (this flag is forced to 1 for debug=1)", False), |
| EnumVariable("arch", "Target Architecture", "armv7a", |
| allowed_values=("armv7a", "arm64-v8a", "arm64-v8.2-a", "arm64-v8.2-a-sve", "x86_32", "x86_64", "armv8a", "armv8.2-a", "armv8.2-a-sve", "x86")), |
| EnumVariable("estate", "Execution State", "auto", allowed_values=("auto", "32", "64")), |
| EnumVariable("os", "Target OS", "linux", allowed_values=("linux", "android", "bare_metal")), |
| EnumVariable("build", "Build type", "cross_compile", allowed_values=("native", "cross_compile", "embed_only")), |
| BoolVariable("examples", "Build example programs", True), |
| BoolVariable("gemm_tuner", "Build gemm_tuner programs", True), |
| BoolVariable("Werror", "Enable/disable the -Werror compilation flag", True), |
| BoolVariable("standalone", "Builds the tests as standalone executables, links statically with libgcc, libstdc++ and libarm_compute", False), |
| BoolVariable("opencl", "Enable OpenCL support", True), |
| BoolVariable("neon", "Enable Neon support", False), |
| BoolVariable("gles_compute", "Enable OpenGL ES Compute Shader support", False), |
| BoolVariable("embed_kernels", "Embed OpenCL kernels and OpenGL ES compute shaders in library binary", True), |
| BoolVariable("set_soname", "Set the library's soname and shlibversion (requires SCons 2.4 or above)", False), |
| BoolVariable("openmp", "Enable OpenMP backend", False), |
| BoolVariable("cppthreads", "Enable C++11 threads backend", True), |
| PathVariable("build_dir", "Specify sub-folder for the build", ".", PathVariable.PathAccept), |
| PathVariable("install_dir", "Specify sub-folder for the install", "", PathVariable.PathAccept), |
| BoolVariable("exceptions", "Enable/disable C++ exception support", True), |
| PathVariable("linker_script", "Use an external linker script", "", PathVariable.PathAccept), |
| #FIXME Remove before release (And remove all references to INTERNAL_ONLY) |
| BoolVariable("internal_only", "Enable ARM internal only tests", False), |
| ("toolchain_prefix", "Override the toolchain prefix", ""), |
| ("extra_cxx_flags", "Extra CXX flags to be appended to the build command", ""), |
| ("extra_link_flags", "Extra LD flags to be appended to the build command", ""), |
| ("compiler_cache", "Command to prefix to the C and C++ compiler (e.g ccache)", "") |
| ) |
| |
| env = Environment(platform="posix", variables=vars, ENV = os.environ) |
| build_path = env['build_dir'] |
| # If build_dir is a relative path then add a #build/ prefix: |
| if not env['build_dir'].startswith('/'): |
| SConsignFile('build/%s/.scons' % build_path) |
| build_path = "#build/%s" % build_path |
| else: |
| SConsignFile('%s/.scons' % build_path) |
| |
| install_path = env['install_dir'] |
| #If the install_dir is a relative path then assume it's from inside build_dir |
| if not env['install_dir'].startswith('/') and install_path != "": |
| install_path = "%s/%s" % (build_path, install_path) |
| |
| env.Append(LIBPATH = [build_path]) |
| Export('env') |
| Export('vars') |
| |
| def install_lib( lib ): |
| # If there is no install folder, then there is nothing to do: |
| if install_path == "": |
| return lib |
| return env.Install( "%s/lib/" % install_path, lib) |
| def install_bin( bin ): |
| # If there is no install folder, then there is nothing to do: |
| if install_path == "": |
| return bin |
| return env.Install( "%s/bin/" % install_path, bin) |
| def install_include( inc ): |
| if install_path == "": |
| return inc |
| return env.Install( "%s/include/" % install_path, inc) |
| |
| Export('install_lib') |
| Export('install_bin') |
| |
| Help(vars.GenerateHelpText(env)) |
| |
| if env['linker_script'] and env['os'] != 'bare_metal': |
| print("Linker script is only supported for bare_metal builds") |
| Exit(1) |
| |
| if env['build'] == "embed_only": |
| SConscript('./SConscript', variant_dir=build_path, duplicate=0) |
| Return() |
| |
| if env['neon'] and 'x86' in env['arch']: |
| print("Cannot compile NEON for x86") |
| Exit(1) |
| |
| if env['set_soname'] and not version_at_least(SCons.__version__, "2.4"): |
| print("Setting the library's SONAME / SHLIBVERSION requires SCons 2.4 or above") |
| print("Update your version of SCons or use set_soname=0") |
| Exit(1) |
| |
| if env['os'] == 'bare_metal': |
| if env['cppthreads'] or env['openmp']: |
| print("ERROR: OpenMP and C++11 threads not supported in bare_metal. Use cppthreads=0 openmp=0") |
| Exit(1) |
| |
| if not env['exceptions']: |
| if env['opencl'] or env['gles_compute']: |
| print("ERROR: OpenCL and GLES are not supported when building without exceptions. Use opencl=0 gles_compute=0") |
| Exit(1) |
| |
| env.Append(CPPDEFINES = ['ARM_COMPUTE_EXCEPTIONS_DISABLED']) |
| env.Append(CXXFLAGS = ['-fno-exceptions']) |
| |
| env.Append(CXXFLAGS = ['-Wall','-DARCH_ARM', |
| '-Wextra','-pedantic','-Wdisabled-optimization','-Wformat=2', |
| '-Winit-self','-Wstrict-overflow=2','-Wswitch-default', |
| '-fpermissive','-std=gnu++11','-Woverloaded-virtual', '-Wformat-security', |
| '-Wctor-dtor-privacy','-Wsign-promo','-Weffc++','-Wno-overlength-strings']) |
| |
| env.Append(CPPDEFINES = ['_GLIBCXX_USE_NANOSLEEP']) |
| |
| default_cpp_compiler = 'g++' if env['os'] != 'android' else 'clang++' |
| default_c_compiler = 'gcc' if env['os'] != 'android' else 'clang' |
| cpp_compiler = os.environ.get('CXX', default_cpp_compiler) |
| c_compiler = os.environ.get('CC', default_c_compiler) |
| |
| if env['os'] == 'android' and ( 'clang++' not in cpp_compiler or 'clang' not in c_compiler ): |
| print( "WARNING: Only clang is officially supported to build the Compute Library for Android") |
| |
| if 'clang++' in cpp_compiler: |
| env.Append(CXXFLAGS = ['-Wno-vla-extension']) |
| elif 'armclang' in cpp_compiler: |
| pass |
| else: |
| env.Append(CXXFLAGS = ['-Wlogical-op','-Wnoexcept','-Wstrict-null-sentinel']) |
| |
| if env['cppthreads']: |
| env.Append(CPPDEFINES = [('ARM_COMPUTE_CPP_SCHEDULER', 1)]) |
| |
| if env['openmp']: |
| if 'clang++' in cpp_compiler: |
| print( "Clang does not support OpenMP. Use scheduler=cpp.") |
| Exit(1) |
| |
| env.Append(CPPDEFINES = [('ARM_COMPUTE_OPENMP_SCHEDULER', 1)]) |
| env.Append(CXXFLAGS = ['-fopenmp']) |
| env.Append(LINKFLAGS = ['-fopenmp']) |
| |
| # Validate and define state |
| if env['estate'] == 'auto': |
| if 'v7a' in env['arch']: |
| env['estate'] = '32' |
| else: |
| env['estate'] = '64' |
| |
| # Map legacy arch |
| if 'arm64' in env['arch']: |
| env['estate'] = '64' |
| |
| if 'v7a' in env['estate'] and env['estate'] == '64': |
| print("ERROR: armv7a architecture has only 32-bit execution state") |
| Exit(1) |
| |
| # Add architecture specific flags |
| prefix = "" |
| if 'v7a' in env['arch']: |
| env.Append(CXXFLAGS = ['-march=armv7-a', '-mthumb', '-mfpu=neon']) |
| if env['os'] == 'android': |
| env.Append(CXXFLAGS = ['-mfloat-abi=softfp']) |
| else: |
| env.Append(CXXFLAGS = ['-mfloat-abi=hard']) |
| elif 'v8a' in env['arch']: |
| env.Append(CXXFLAGS = ['-march=armv8-a']) |
| if env['estate'] == '32': |
| env.Append(CXXFLAGS = ['-mfpu=neon-fp-armv8']) |
| elif 'v8.2-a' in env['arch']: |
| if env['estate'] == '32': |
| env.Append(CXXFLAGS = ['-mfpu=neon-fp-armv8']) |
| if 'sve' in env['arch']: |
| env.Append(CXXFLAGS = ['-march=armv8.2-a+sve+fp16+dotprod']) |
| else: |
| env.Append(CXXFLAGS = ['-march=armv8.2-a+fp16']) # explicitly enable fp16 extension otherwise __ARM_FEATURE_FP16_VECTOR_ARITHMETIC is undefined |
| elif 'x86' in env['arch']: |
| if env['estate'] == '32': |
| env.Append(CCFLAGS = ['-m32']) |
| env.Append(LINKFLAGS = ['-m32']) |
| else: |
| env.Append(CXXFLAGS = ['-fPIC']) |
| env.Append(CCFLAGS = ['-m64']) |
| env.Append(LINKFLAGS = ['-m64']) |
| |
| # Define toolchain |
| prefix = "" |
| if 'x86' not in env['arch']: |
| if env['estate'] == '32': |
| if env['os'] == 'linux': |
| prefix = "arm-linux-gnueabihf-" if 'v7' in env['arch'] else "armv8l-linux-gnueabihf-" |
| elif env['os'] == 'bare_metal': |
| prefix = "arm-eabi-" |
| elif env['os'] == 'android': |
| prefix = "arm-linux-androideabi-" |
| elif env['estate'] == '64' and 'v8' in env['arch']: |
| if env['os'] == 'linux': |
| prefix = "aarch64-linux-gnu-" |
| elif env['os'] == 'bare_metal': |
| prefix = "aarch64-elf-" |
| elif env['os'] == 'android': |
| prefix = "aarch64-linux-android-" |
| |
| if env['build'] == 'native': |
| prefix = "" |
| |
| if env["toolchain_prefix"] != "": |
| prefix = env["toolchain_prefix"] |
| |
| env['CC'] = env['compiler_cache']+" "+prefix + c_compiler |
| env['CXX'] = env['compiler_cache']+" "+prefix + cpp_compiler |
| env['LD'] = prefix + "ld" |
| env['AS'] = prefix + "as" |
| env['AR'] = prefix + "ar" |
| env['RANLIB'] = prefix + "ranlib" |
| |
| if not GetOption("help"): |
| try: |
| compiler_ver = subprocess.check_output(env['CXX'].split() + ["-dumpversion"]).strip() |
| except OSError: |
| print("ERROR: Compiler '%s' not found" % env['CXX']) |
| Exit(1) |
| |
| if 'armclang' in cpp_compiler: |
| pass |
| elif 'clang++' not in cpp_compiler: |
| if env['arch'] == 'arm64-v8.2-a' and not version_at_least(compiler_ver, '6.2.1'): |
| print("GCC 6.2.1 or newer is required to compile armv8.2-a code") |
| Exit(1) |
| elif env['arch'] == 'arm64-v8a' and not version_at_least(compiler_ver, '4.9'): |
| print("GCC 4.9 or newer is required to compile NEON code for AArch64") |
| Exit(1) |
| |
| if version_at_least(compiler_ver, '6.1'): |
| env.Append(CXXFLAGS = ['-Wno-ignored-attributes']) |
| |
| if compiler_ver == '4.8.3': |
| env.Append(CXXFLAGS = ['-Wno-array-bounds']) |
| |
| if env['standalone']: |
| env.Append(CXXFLAGS = ['-fPIC']) |
| env.Append(LINKFLAGS = ['-static-libgcc','-static-libstdc++']) |
| |
| if env['Werror']: |
| env.Append(CXXFLAGS = ['-Werror']) |
| |
| if env['os'] == 'android': |
| env.Append(CPPDEFINES = ['ANDROID']) |
| env.Append(LINKFLAGS = ['-pie', '-static-libstdc++']) |
| elif env['os'] == 'bare_metal': |
| env.Append(LINKFLAGS = ['-static']) |
| env.Append(LINKFLAGS = ['-specs=rdimon.specs']) |
| env.Append(CXXFLAGS = ['-fPIC']) |
| env.Append(CPPDEFINES = ['NO_MULTI_THREADING']) |
| env.Append(CPPDEFINES = ['BARE_METAL']) |
| |
| if env['opencl']: |
| if env['os'] in ['bare_metal'] or env['standalone']: |
| print("Cannot link OpenCL statically, which is required for bare metal / standalone builds") |
| Exit(1) |
| |
| if env['gles_compute']: |
| if env['os'] in ['bare_metal'] or env['standalone']: |
| print("Cannot link OpenGLES statically, which is required for bare metal / standalone builds") |
| Exit(1) |
| |
| if env["os"] not in ["android", "bare_metal"] and (env['opencl'] or env['cppthreads']): |
| env.Append(LIBS = ['pthread']) |
| |
| if env['opencl'] or env['gles_compute']: |
| if env['embed_kernels']: |
| env.Append(CPPDEFINES = ['EMBEDDED_KERNELS']) |
| |
| if env['debug']: |
| env['asserts'] = True |
| env['logging'] = True |
| env.Append(CXXFLAGS = ['-O0','-g','-gdwarf-2']) |
| env.Append(CPPDEFINES = ['ARM_COMPUTE_DEBUG_ENABLED']) |
| else: |
| env.Append(CXXFLAGS = ['-O3']) |
| |
| if env['asserts']: |
| env.Append(CPPDEFINES = ['ARM_COMPUTE_ASSERTS_ENABLED']) |
| env.Append(CXXFLAGS = ['-fstack-protector-strong']) |
| |
| if env['logging']: |
| env.Append(CPPDEFINES = ['ARM_COMPUTE_LOGGING_ENABLED']) |
| |
| env.Append(CPPPATH = ['#/include', "#"]) |
| env.Append(CXXFLAGS = env['extra_cxx_flags']) |
| env.Append(LINKFLAGS = env['extra_link_flags']) |
| |
| Default( install_include("arm_compute")) |
| Default( install_include("support")) |
| Default( install_include("utils")) |
| for dirname in os.listdir("./include"): |
| Default( install_include("include/%s" % dirname)) |
| |
| Export('version_at_least') |
| |
| |
| if env['gles_compute'] and env['os'] != 'android': |
| env.Append(CPPPATH = ['#/include/linux']) |
| |
| SConscript('./SConscript', variant_dir=build_path, duplicate=0) |
| |
| if env['examples'] and env['exceptions']: |
| if env['os'] == 'bare_metal' and env['arch'] == 'armv7a': |
| print("WARNING: Building examples for bare metal and armv7a is not supported. Use examples=0") |
| Return() |
| SConscript('./examples/SConscript', variant_dir='%s/examples' % build_path, duplicate=0) |
| |
| if env['exceptions']: |
| if env['os'] == 'bare_metal' and env['arch'] == 'armv7a': |
| print("WARNING: Building tests for bare metal and armv7a is not supported") |
| Return() |
| SConscript('./tests/SConscript', variant_dir='%s/tests' % build_path, duplicate=0) |