013ff2fae1
We'll need to update gallivm for the interface changes in LLVM 3.6, and the fewer the number of older LLVM versions we support the less hairy that will be. As consequence HAVE_AVX define can disappear. (Note HAVE_AVX meant whether LLVM version supports AVX or not. Runtime support for AVX is always checked and enforced independently.) Verified llvmpipe builds and runs with with LLVM 3.3, 3.4, and 3.5. Reviewed-by: Roland Scheidegger <sroland@vmware.com>
183 lines
6.8 KiB
Python
183 lines
6.8 KiB
Python
"""llvm
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Tool-specific initialization for LLVM
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"""
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#
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# Copyright (c) 2009 VMware, Inc.
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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import os
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import os.path
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import re
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import sys
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import distutils.version
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import SCons.Errors
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import SCons.Util
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required_llvm_version = '3.3'
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def generate(env):
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env['llvm'] = False
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try:
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llvm_dir = os.environ['LLVM']
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except KeyError:
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# Do nothing -- use the system headers/libs
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llvm_dir = None
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else:
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if not os.path.isdir(llvm_dir):
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raise SCons.Errors.InternalError, "Specified LLVM directory not found"
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if env['debug']:
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llvm_subdir = 'Debug'
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else:
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llvm_subdir = 'Release'
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llvm_bin_dir = os.path.join(llvm_dir, llvm_subdir, 'bin')
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if not os.path.isdir(llvm_bin_dir):
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llvm_bin_dir = os.path.join(llvm_dir, 'bin')
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if not os.path.isdir(llvm_bin_dir):
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raise SCons.Errors.InternalError, "LLVM binary directory not found"
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env.PrependENVPath('PATH', llvm_bin_dir)
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if env['platform'] == 'windows':
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# XXX: There is no llvm-config on Windows, so assume a standard layout
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if llvm_dir is None:
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print 'scons: LLVM environment variable must be specified when building for windows'
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return
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# Try to determine the LLVM version from llvm/Config/config.h
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llvm_config = os.path.join(llvm_dir, 'include/llvm/Config/config.h')
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if not os.path.exists(llvm_config):
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print 'scons: could not find %s' % llvm_config
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return
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llvm_version_re = re.compile(r'^#define PACKAGE_VERSION "([^"]*)"')
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llvm_version = None
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for line in open(llvm_config, 'rt'):
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mo = llvm_version_re.match(line)
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if mo:
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llvm_version = mo.group(1)
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llvm_version = distutils.version.LooseVersion(llvm_version)
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break
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if llvm_version is None:
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print 'scons: could not determine the LLVM version from %s' % llvm_config
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return
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if llvm_version < distutils.version.LooseVersion(required_llvm_version):
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print 'scons: LLVM version %s found, but %s is required' % (llvm_version, required_llvm_version)
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return
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env.Prepend(CPPPATH = [os.path.join(llvm_dir, 'include')])
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env.AppendUnique(CPPDEFINES = [
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'__STDC_LIMIT_MACROS',
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'__STDC_CONSTANT_MACROS',
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'HAVE_STDINT_H',
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])
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env.Prepend(LIBPATH = [os.path.join(llvm_dir, 'lib')])
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if True:
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# 3.2
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env.Prepend(LIBS = [
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'LLVMBitWriter', 'LLVMX86Disassembler', 'LLVMX86AsmParser',
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'LLVMX86CodeGen', 'LLVMX86Desc', 'LLVMSelectionDAG',
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'LLVMAsmPrinter', 'LLVMMCParser', 'LLVMX86AsmPrinter',
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'LLVMX86Utils', 'LLVMX86Info', 'LLVMMCJIT', 'LLVMJIT',
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'LLVMExecutionEngine', 'LLVMCodeGen', 'LLVMScalarOpts',
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'LLVMInstCombine', 'LLVMTransformUtils', 'LLVMipa',
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'LLVMAnalysis', 'LLVMTarget', 'LLVMMC', 'LLVMCore',
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'LLVMSupport', 'LLVMRuntimeDyld', 'LLVMObject'
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])
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env.Append(LIBS = [
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'imagehlp',
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'psapi',
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'shell32',
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'advapi32'
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])
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if env['msvc']:
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# Some of the LLVM C headers use the inline keyword without
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# defining it.
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env.Append(CPPDEFINES = [('inline', '__inline')])
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if env['build'] in ('debug', 'checked'):
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# LLVM libraries are static, build with /MT, and they
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# automatically link agains LIBCMT. When we're doing a
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# debug build we'll be linking against LIBCMTD, so disable
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# that.
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env.Append(LINKFLAGS = ['/nodefaultlib:LIBCMT'])
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else:
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if not env.Detect('llvm-config'):
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print 'scons: llvm-config script not found'
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return
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llvm_version = env.backtick('llvm-config --version').rstrip()
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llvm_version = distutils.version.LooseVersion(llvm_version)
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if llvm_version < distutils.version.LooseVersion(required_llvm_version):
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print 'scons: LLVM version %s found, but %s is required' % (llvm_version, required_llvm_version)
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return
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try:
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# Treat --cppflags specially to prevent NDEBUG from disabling
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# assertion failures in debug builds.
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cppflags = env.ParseFlags('!llvm-config --cppflags')
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try:
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cppflags['CPPDEFINES'].remove('NDEBUG')
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except ValueError:
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pass
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env.MergeFlags(cppflags)
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# Match llvm --fno-rtti flag
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cxxflags = env.backtick('llvm-config --cxxflags').split()
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if '-fno-rtti' in cxxflags:
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env.Append(CXXFLAGS = ['-fno-rtti'])
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components = ['engine', 'mcjit', 'bitwriter', 'x86asmprinter']
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env.ParseConfig('llvm-config --libs ' + ' '.join(components))
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env.ParseConfig('llvm-config --ldflags')
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if llvm_version >= distutils.version.LooseVersion('3.5'):
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env.ParseConfig('llvm-config --system-libs')
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env.Append(CXXFLAGS = ['-std=c++11'])
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except OSError:
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print 'scons: llvm-config version %s failed' % llvm_version
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return
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assert llvm_version is not None
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env['llvm'] = True
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print 'scons: Found LLVM version %s' % llvm_version
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env['LLVM_VERSION'] = llvm_version
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# Define HAVE_LLVM macro with the major/minor version number (e.g., 0x0206 for 2.6)
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llvm_version_major = int(llvm_version.version[0])
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llvm_version_minor = int(llvm_version.version[1])
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llvm_version_hex = '0x%02x%02x' % (llvm_version_major, llvm_version_minor)
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env.Prepend(CPPDEFINES = [('HAVE_LLVM', llvm_version_hex)])
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def exists(env):
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return True
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# vim:set ts=4 sw=4 et:
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