# Copyright 2012-2014 The Meson development team # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # http://www.apache.org/licenses/LICENSE-2.0 # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import os, pickle import build import dependencies import mesonlib from coredata import MesonException class TestSerialisation: def __init__(self, name, fname, is_cross, exe_wrapper, is_parallel, cmd_args, env, should_fail, valgrind_args, timeout, extra_paths): self.name = name self.fname = fname self.is_cross = is_cross self.exe_runner = exe_wrapper self.is_parallel = is_parallel self.cmd_args = cmd_args self.env = env self.should_fail = should_fail self.valgrind_args = valgrind_args self.timeout = timeout self.extra_paths = extra_paths # This class contains the basic functionality that is needed by all backends. # Feel free to move stuff in and out of it as you see fit. class Backend(): def __init__(self, build, interp): self.build = build self.environment = build.environment self.interpreter = interp self.processed_targets = {} self.dep_rules = {} self.build_to_src = os.path.relpath(self.environment.get_source_dir(), self.environment.get_build_dir()) def get_compiler_for_lang(self, lang): for i in self.build.compilers: if i.language == lang: return i raise RuntimeError('No compiler for language ' + lang) def get_compiler_for_source(self, src): for i in self.build.compilers: if i.can_compile(src): return i if isinstance(src, mesonlib.File): src = src.fname raise RuntimeError('No specified compiler can handle file ' + src) def get_target_filename(self, target): targetdir = self.get_target_dir(target) fname = target.get_filename() if isinstance(fname, list): fname = fname[0] # HORROR, HORROR! Fix this. filename = os.path.join(targetdir, fname) return filename def get_target_dir(self, target): dirname = target.get_subdir() os.makedirs(os.path.join(self.environment.get_build_dir(), dirname), exist_ok=True) return dirname def get_target_private_dir(self, target): dirname = os.path.join(self.get_target_dir(target), target.get_basename() + target.type_suffix()) os.makedirs(os.path.join(self.environment.get_build_dir(), dirname), exist_ok=True) return dirname def generate_unity_files(self, target, unity_src): langlist = {} abs_files = [] result = [] for src in unity_src: comp = self.get_compiler_for_source(src) language = comp.get_language() suffix = '.' + comp.get_default_suffix() if language not in langlist: outfilename = os.path.join(self.get_target_private_dir(target), target.name + '-unity' + suffix) outfileabs = os.path.join(self.environment.get_build_dir(), outfilename) outfileabs_tmp = outfileabs + '.tmp' abs_files.append(outfileabs) outfile = open(outfileabs_tmp, 'w') langlist[language] = outfile result.append(outfilename) ofile = langlist[language] ofile.write('#include<%s>\n' % src) [x.close() for x in langlist.values()] [mesonlib.replace_if_different(x, x + '.tmp') for x in abs_files] return result def relpath(self, todir, fromdir): return os.path.relpath(os.path.join('dummyprefixdir', todir),\ os.path.join('dummyprefixdir', fromdir)) def flatten_object_list(self, target, proj_dir_to_build_root=''): obj_list = [] for obj in target.get_objects(): if isinstance(obj, str): o = os.path.join(proj_dir_to_build_root, self.build_to_src, target.get_subdir(), obj) obj_list.append(o) elif isinstance(obj, build.ExtractedObjects): obj_list += self.determine_ext_objs(obj, proj_dir_to_build_root) else: raise MesonException('Unknown data type in object list.') return obj_list def serialise_tests(self): test_data = os.path.join(self.environment.get_scratch_dir(), 'meson_test_setup.dat') datafile = open(test_data, 'wb') self.write_test_file(datafile) datafile.close() def has_vala(self, target): for s in target.get_sources(): if s.endswith('.vala'): return True return False def has_rust(self, target): for s in target.get_sources(): if s.endswith('.rs'): return True return False def has_cs(self, target): for s in target.get_sources(): if s.endswith('.cs'): return True return False def determine_linker(self, target, src): if isinstance(target, build.StaticLibrary): return self.build.static_linker if len(self.build.compilers) == 1: return self.build.compilers[0] # Currently a bit naive. C++ must # be linked with a C++ compiler, but # otherwise we don't care. This will # become trickier if and when Fortran # and the like become supported. cpp = None for c in self.build.compilers: if c.get_language() == 'cpp': cpp = c break if cpp is not None: for s in src: if c.can_compile(s): return cpp for c in self.build.compilers: if c.get_language() != 'vala': return c raise RuntimeError('Unreachable code') def determine_ext_objs(self, extobj, proj_dir_to_build_root=''): result = [] targetdir = self.get_target_private_dir(extobj.target) suffix = '.' + self.environment.get_object_suffix() for osrc in extobj.srclist: osrc_base = osrc.fname if not self.source_suffix_in_objs: osrc_base = '.'.join(osrc.split('.')[:-1]) # If extracting in a subproject, the subproject # name gets duplicated in the file name. pathsegs = osrc.subdir.split(os.sep) if pathsegs[0] == 'subprojects': pathsegs = pathsegs[2:] fixedpath = os.sep.join(pathsegs) objbase = osrc.fname.replace('/', '_').replace('\\', '_') objname = os.path.join(proj_dir_to_build_root, targetdir, os.path.basename(objbase) + suffix) result.append(objname) return result def get_pch_include_args(self, compiler, target): args = [] pchpath = self.get_target_private_dir(target) includeargs = compiler.get_include_args(pchpath) for lang in ['c', 'cpp']: p = target.get_pch(lang) if len(p) == 0: continue if compiler.can_compile(p[-1]): header = p[0] args += compiler.get_pch_use_args(pchpath, header) if len(args) > 0: args = includeargs + args return args def generate_basic_compiler_args(self, target, compiler): commands = [] commands += compiler.get_always_args() commands += self.build.get_global_args(compiler) commands += self.environment.coredata.external_args[compiler.get_language()] if self.environment.coredata.buildtype != 'plain': commands += compiler.get_std_warn_args() commands += target.get_extra_args(compiler.get_language()) commands += compiler.get_buildtype_args(self.environment.coredata.buildtype) if self.environment.coredata.coverage: commands += compiler.get_coverage_args() if self.environment.coredata.werror: commands += compiler.get_werror_args() if isinstance(target, build.SharedLibrary): commands += compiler.get_pic_args() for dep in target.get_external_deps(): commands += dep.get_compile_args() if isinstance(target, build.Executable): commands += dep.get_exe_args() return commands def build_target_link_arguments(self, compiler, deps): args = [] for d in deps: if not isinstance(d, build.StaticLibrary) and\ not isinstance(d, build.SharedLibrary): raise RuntimeError('Tried to link with a non-library target "%s".' % d.get_basename()) fname = self.get_target_filename(d) if compiler.id == 'msvc': if fname.endswith('dll'): fname = fname[:-3] + 'lib' args.append(fname) # If you have executable e that links to shared lib s1 that links to shared library s2 # you have to specify s2 as well as s1 when linking e even if e does not directly use # s2. Gcc handles this case fine but Clang does not for some reason. Thus we need to # explictly specify all libraries every time. args += self.build_target_link_arguments(compiler, d.get_dependencies()) return args def determine_windows_extra_paths(self, target): '''On Windows there is no such thing as an rpath. We must determine all locations of DLLs that this exe links to and return them so they can be used in unit tests.''' if not isinstance(target, build.Executable): print(target) return [] prospectives = target.get_transitive_rpaths() return [os.path.join(self.environment.get_build_dir(), i) for i in prospectives if len(i) > 0] def write_test_file(self, datafile): arr = [] for t in self.build.get_tests(): exe = t.get_exe() if isinstance(exe, dependencies.ExternalProgram): fname = exe.fullpath else: fname = [os.path.join(self.environment.get_build_dir(), self.get_target_filename(t.get_exe()))] is_cross = self.environment.is_cross_build() and self.environment.cross_info.need_cross_compiler() if is_cross: exe_wrapper = self.environment.cross_info.config['binaries'].get('exe_wrapper', None) else: exe_wrapper = None if mesonlib.is_windows(): extra_paths = self.determine_windows_extra_paths(exe) else: extra_paths = [] ts = TestSerialisation(t.get_name(), fname, is_cross, exe_wrapper, t.is_parallel, t.cmd_args, t.env, t.should_fail, t.valgrind_args, t.timeout, extra_paths) arr.append(ts) pickle.dump(arr, datafile) def generate_pkgconfig_files(self): for p in self.build.pkgconfig_gens: outdir = self.environment.scratch_dir fname = os.path.join(outdir, p.filebase + '.pc') ofile = open(fname, 'w') ofile.write('prefix=%s\n' % self.environment.get_coredata().prefix) ofile.write('libdir=${prefix}/%s\n' % self.environment.get_coredata().libdir) ofile.write('includedir=${prefix}/%s\n\n' % self.environment.get_coredata().includedir) ofile.write('Name: %s\n' % p.name) if len(p.description) > 0: ofile.write('Description: %s\n' % p.description) if len(p.version) > 0: ofile.write('Version: %s\n' % p.version) ofile.write('Libs: -L${libdir} ') for l in p.libraries: ofile.write('-l%s ' % l.name) ofile.write('\n') ofile.write('CFlags: ') for h in p.subdirs: if h == '.': h = '' ofile.write(os.path.join('-I${includedir}', h)) ofile.write(' ') ofile.write('\n')