# Copyright 2012-2016 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, re from .. import build from .. import dependencies from .. import mesonlib from .. import compilers import json import subprocess from ..mesonlib import MesonException class InstallData(): def __init__(self, source_dir, build_dir, prefix): self.source_dir = source_dir self.build_dir= build_dir self.prefix = prefix self.targets = [] self.headers = [] self.man = [] self.data = [] self.po_package_name = '' self.po = [] self.install_scripts = [] self.install_subdirs = [] class ExecutableSerialisation(): def __init__(self, name, fname, cmd_args, env, is_cross, exe_wrapper, workdir, extra_paths, capture): self.name = name self.fname = fname self.cmd_args = cmd_args self.env = env self.is_cross = is_cross self.exe_runner = exe_wrapper self.workdir = workdir self.extra_paths = extra_paths self.capture = capture class TestSerialisation: def __init__(self, name, suite, fname, is_cross, exe_wrapper, is_parallel, cmd_args, env, should_fail, valgrind_args, timeout, workdir, extra_paths): self.name = name self.suite = suite 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.workdir = workdir 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): self.build = build self.environment = build.environment self.processed_targets = {} self.build_to_src = os.path.relpath(self.environment.get_source_dir(), self.environment.get_build_dir()) for t in self.build.targets: priv_dirname = self.get_target_private_dir_abs(t) os.makedirs(priv_dirname, exist_ok=True) 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, is_cross): comp = self.build.cross_compilers if is_cross else self.build.compilers for i in comp: 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): assert(isinstance(target, (build.BuildTarget, build.CustomTarget))) targetdir = self.get_target_dir(target) fname = target.get_filename() if isinstance(fname, list): # FIXME FIXME FIXME: build.CustomTarget has multiple output files # and get_filename() returns them all fname = fname[0] filename = os.path.join(targetdir, fname) return filename def get_target_filename_abs(self, target): return os.path.join(self.environment.get_build_dir(), self.get_target_filename(target)) def get_target_filename_for_linking(self, target): # On some platforms (msvc for instance), the file that is used for # dynamic linking is not the same as the dynamic library itself. This # file is called an import library, and we want to link against that. # On all other platforms, we link to the library directly. if isinstance(target, build.SharedLibrary): link_lib = target.get_import_filename() or target.get_filename() return os.path.join(self.get_target_dir(target), link_lib) elif isinstance(target, build.StaticLibrary): return os.path.join(self.get_target_dir(target), target.get_filename()) raise AssertionError('BUG: Tried to link to something that\'s not a library') def get_target_debug_filename(self, target): fname = target.get_debug_filename() if not fname: raise AssertionError("BUG: Tried to generate debug filename when it doesn't exist") return os.path.join(self.get_target_dir(target), fname) def get_target_dir(self, target): if self.environment.coredata.get_builtin_option('layout') == 'mirror': dirname = target.get_subdir() else: dirname = 'meson-out' return dirname def get_target_private_dir(self, target): dirname = os.path.join(self.get_target_dir(target), target.get_basename() + target.type_suffix()) return dirname def get_target_private_dir_abs(self, target): dirname = os.path.join(self.environment.get_build_dir(), self.get_target_private_dir(target)) return dirname def generate_unity_files(self, target, unity_src): langlist = {} abs_files = [] result = [] def init_language_file(language, suffix): outfilename = os.path.join(self.get_target_private_dir_abs(target), target.name + '-unity' + suffix) outfileabs = os.path.join(self.environment.get_build_dir(), outfilename) outfileabs_tmp = outfileabs + '.tmp' abs_files.append(outfileabs) outfileabs_tmp_dir = os.path.dirname(outfileabs_tmp) if not os.path.exists(outfileabs_tmp_dir): os.makedirs(outfileabs_tmp_dir) result.append(outfilename) return open(outfileabs_tmp, 'w') try: for src in unity_src: comp = self.get_compiler_for_source(src, target.is_cross) language = comp.get_language() try: ofile = langlist[language] except KeyError: suffix = '.' + comp.get_default_suffix() ofile = langlist[language] = init_language_file(language, suffix) ofile.write('#include<%s>\n' % src) finally: for x in langlist.values(): x.close() [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_executable(self, exe, cmd_args, workdir, env={}, capture=None): import uuid # Can't just use exe.name here; it will likely be run more than once if isinstance(exe, (dependencies.ExternalProgram, build.BuildTarget, build.CustomTarget)): basename = exe.name else: basename = os.path.basename(exe) scratch_file = 'meson_exe_{0}_{1}.dat'.format(basename, str(uuid.uuid4())[:8]) exe_data = os.path.join(self.environment.get_scratch_dir(), scratch_file) with open(exe_data, 'wb') as f: if isinstance(exe, dependencies.ExternalProgram): exe_fullpath = exe.fullpath elif isinstance(exe, (build.BuildTarget, build.CustomTarget)): exe_fullpath = [self.get_target_filename_abs(exe)] else: exe_fullpath = [exe] is_cross = self.environment.is_cross_build() and \ self.environment.cross_info.need_cross_compiler() and \ self.environment.cross_info.need_exe_wrapper() 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 = [] es = ExecutableSerialisation(basename, exe_fullpath, cmd_args, env, is_cross, exe_wrapper, workdir, extra_paths, capture) pickle.dump(es, f) return exe_data def serialise_tests(self): test_data = os.path.join(self.environment.get_scratch_dir(), 'meson_test_setup.dat') with open(test_data, 'wb') as datafile: self.write_test_file(datafile) benchmark_data = os.path.join(self.environment.get_scratch_dir(), 'meson_benchmark_setup.dat') with open(benchmark_data, 'wb') as datafile: self.write_benchmark_file(datafile) return (test_data, benchmark_data) def determine_linker(self, target, src): if isinstance(target, build.StaticLibrary): if self.build.static_cross_linker is not None: return self.build.static_cross_linker else: 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': continue for s in src: if c.can_compile(s): return c raise RuntimeError('Unreachable code') def object_filename_from_source(self, target, source): return source.fname.replace('/', '_').replace('\\', '_') + '.' + self.environment.get_object_suffix() def determine_ext_objs(self, extobj, proj_dir_to_build_root=''): result = [] targetdir = self.get_target_private_dir(extobj.target) for osrc in extobj.srclist: # 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) objname = os.path.join(proj_dir_to_build_root, targetdir, self.object_filename_from_source(extobj.target, osrc)) 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, False) 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 @staticmethod def escape_extra_args(compiler, args): # No extra escaping/quoting needed when not running on Windows if not mesonlib.is_windows(): return args extra_args = [] # Compiler-specific escaping is needed for -D args but not for any others if compiler.get_id() == 'msvc': # MSVC needs escaping when a -D argument ends in \ or \" for arg in args: if arg.startswith('-D') or arg.startswith('/D'): # Without extra escaping for these two, the next character # gets eaten if arg.endswith('\\'): arg += '\\' elif arg.endswith('\\"'): arg = arg[:-2] + '\\\\"' extra_args.append(arg) else: # MinGW GCC needs all backslashes in defines to be doubly-escaped # FIXME: Not sure about Cygwin or Clang for arg in args: if arg.startswith('-D') or arg.startswith('/D'): arg = arg.replace('\\', '\\\\') extra_args.append(arg) return extra_args def generate_basic_compiler_args(self, target, compiler): commands = [] commands += self.get_cross_stdlib_args(target, compiler) commands += compiler.get_always_args() commands += compiler.get_warn_args(self.environment.coredata.get_builtin_option('warning_level')) commands += compiler.get_option_compile_args(self.environment.coredata.compiler_options) commands += self.build.get_global_args(compiler) commands += self.environment.coredata.external_args[compiler.get_language()] commands += self.escape_extra_args(compiler, target.get_extra_args(compiler.get_language())) commands += compiler.get_buildtype_args(self.environment.coredata.get_builtin_option('buildtype')) if self.environment.coredata.get_builtin_option('werror'): commands += compiler.get_werror_args() if isinstance(target, build.SharedLibrary): commands += compiler.get_pic_args() for dep in target.get_external_deps(): # Cflags required by external deps might have UNIX-specific flags, # so filter them out if needed commands += compiler.unix_compile_flags_to_native(dep.get_compile_args()) if isinstance(target, build.Executable): commands += dep.get_exe_args() # Fortran requires extra include directives. if compiler.language == 'fortran': for lt in target.link_targets: priv_dir = os.path.join(self.get_target_dir(lt), lt.get_basename() + lt.type_suffix()) incflag = compiler.get_include_args(priv_dir, False) commands += incflag return commands def build_target_link_arguments(self, compiler, deps): args = [] for d in deps: if not isinstance(d, (build.StaticLibrary, build.SharedLibrary)): raise RuntimeError('Tried to link with a non-library target "%s".' % d.get_basename()) if isinstance(compiler, compilers.LLVMDCompiler): args.extend(['-L', self.get_target_filename_for_linking(d)]) else: args.append(self.get_target_filename_for_linking(d)) # 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): return [] prospectives = target.get_transitive_link_deps() result = [] for ld in prospectives: if ld == '' or ld == '.': continue dirseg = os.path.join(self.environment.get_build_dir(), self.get_target_dir(ld)) if dirseg not in result: result.append(dirseg) return result def write_benchmark_file(self, datafile): self.write_test_serialisation(self.build.get_benchmarks(), datafile) def write_test_file(self, datafile): self.write_test_serialisation(self.build.get_tests(), datafile) def write_test_serialisation(self, tests, datafile): arr = [] for t in 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() and \ self.environment.cross_info.need_exe_wrapper() 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 = [] cmd_args = [] for a in t.cmd_args: if isinstance(a, mesonlib.File): a = os.path.join(self.environment.get_build_dir(), a.rel_to_builddir(self.build_to_src)) cmd_args.append(a) ts = TestSerialisation(t.get_name(), t.suite, fname, is_cross, exe_wrapper, t.is_parallel, cmd_args, t.env, t.should_fail, t.valgrind_args, t.timeout, t.workdir, extra_paths) arr.append(ts) pickle.dump(arr, datafile) def generate_depmf_install(self, d): if self.build.dep_manifest_name is None: return ifilename = os.path.join(self.environment.get_build_dir(), 'depmf.json') ofilename = os.path.join(self.environment.get_prefix(), self.build.dep_manifest_name) mfobj = {'type': 'dependency manifest', 'version': '1.0'} mfobj['projects'] = self.build.dep_manifest with open(ifilename, 'w') as f: f.write(json.dumps(mfobj)) d.data.append([ifilename, ofilename]) def get_regen_filelist(self): '''List of all files whose alteration means that the build definition needs to be regenerated.''' deps = [os.path.join(self.build_to_src, df) \ for df in self.interpreter.get_build_def_files()] if self.environment.is_cross_build(): deps.append(os.path.join(self.build_to_src, self.environment.coredata.cross_file)) deps.append('meson-private/coredata.dat') if os.path.exists(os.path.join(self.environment.get_source_dir(), 'meson_options.txt')): deps.append(os.path.join(self.build_to_src, 'meson_options.txt')) for sp in self.build.subprojects.keys(): fname = os.path.join(self.environment.get_source_dir(), sp, 'meson_options.txt') if os.path.isfile(fname): deps.append(os.path.join(self.build_to_src, sp, 'meson_options.txt')) return deps def exe_object_to_cmd_array(self, exe): if self.environment.is_cross_build() and \ self.environment.cross_info.need_exe_wrapper() and \ isinstance(exe, build.BuildTarget) and exe.is_cross: if 'exe_wrapper' not in self.environment.cross_info.config['binaries']: s = 'Can not use target %s as a generator because it is cross-built\n' s += 'and no exe wrapper is defined. You might want to set it to native instead.' s = s % exe.name raise MesonException(s) if isinstance(exe, build.BuildTarget): exe_arr = [os.path.join(self.environment.get_build_dir(), self.get_target_filename(exe))] else: exe_arr = exe.get_command() return exe_arr def replace_extra_args(self, args, genlist): final_args = [] for a in args: if a == '@EXTRA_ARGS@': final_args += genlist.get_extra_args() else: final_args.append(a) return final_args def replace_outputs(self, args, private_dir, output_list): newargs = [] regex = re.compile('@OUTPUT(\d+)@') for arg in args: m = regex.search(arg) while m is not None: index = int(m.group(1)) src = '@OUTPUT%d@' % index arg = arg.replace(src, os.path.join(private_dir, output_list[index])) m = regex.search(arg) newargs.append(arg) return newargs def get_custom_target_provided_libraries(self, target): libs = [] for t in target.get_generated_sources(): if not isinstance(t, build.CustomTarget): continue for f in t.output: if self.environment.is_library(f): libs.append(os.path.join(self.get_target_dir(t), f)) return libs def eval_custom_target_command(self, target, absolute_paths=False): if not absolute_paths: ofilenames = [os.path.join(self.get_target_dir(target), i) for i in target.output] else: ofilenames = [os.path.join(self.environment.get_build_dir(), self.get_target_dir(target), i) \ for i in target.output] srcs = [] outdir = self.get_target_dir(target) # Many external programs fail on empty arguments. if outdir == '': outdir = '.' if absolute_paths: outdir = os.path.join(self.environment.get_build_dir(), outdir) for i in target.sources: if hasattr(i, 'held_object'): i = i.held_object if isinstance(i, str): fname = [os.path.join(self.build_to_src, target.subdir, i)] elif isinstance(i, (build.BuildTarget, build.CustomTarget)): fname = [self.get_target_filename(i)] elif isinstance(i, build.GeneratedList): fname = [os.path.join(self.get_target_private_dir(target), p) for p in i.get_outfilelist()] else: fname = [i.rel_to_builddir(self.build_to_src)] if absolute_paths: fname =[os.path.join(self.environment.get_build_dir(), f) for f in fname] srcs += fname cmd = [] for i in target.command: if isinstance(i, build.Executable): cmd += self.exe_object_to_cmd_array(i) continue elif isinstance(i, build.CustomTarget): # GIR scanner will attempt to execute this binary but # it assumes that it is in path, so always give it a full path. tmp = i.get_filename()[0] i = os.path.join(self.get_target_dir(i), tmp) elif isinstance(i, mesonlib.File): i = i.rel_to_builddir(self.build_to_src) if absolute_paths: i = os.path.join(self.environment.get_build_dir(), i) # FIXME: str types are blindly added and ignore the 'absolute_paths' argument elif not isinstance(i, str): err_msg = 'Argument {0} is of unknown type {1}' raise RuntimeError(err_msg.format(str(i), str(type(i)))) for (j, src) in enumerate(srcs): i = i.replace('@INPUT%d@' % j, src) for (j, res) in enumerate(ofilenames): i = i.replace('@OUTPUT%d@' % j, res) if i == '@INPUT@': cmd += srcs elif i == '@OUTPUT@': cmd += ofilenames else: if '@OUTDIR@' in i: i = i.replace('@OUTDIR@', outdir) elif '@DEPFILE@' in i: if target.depfile is None: raise MesonException('Custom target %s has @DEPFILE@ but no depfile keyword argument.' % target.name) if absolute_paths: dfilename = os.path.join(self.get_target_private_dir_abs(target), target.depfile) else: dfilename = os.path.join(self.get_target_private_dir(target), target.depfile) i = i.replace('@DEPFILE@', dfilename) elif '@PRIVATE_OUTDIR_' in i: match = re.search('@PRIVATE_OUTDIR_(ABS_)?([-a-zA-Z0-9.@:]*)@', i) source = match.group(0) if match.group(1) is None and not absolute_paths: lead_dir = '' else: lead_dir = self.environment.get_build_dir() i = i.replace(source, os.path.join(lead_dir, outdir)) cmd.append(i) # This should not be necessary but removing it breaks # building GStreamer on Windows. The underlying issue # is problems with quoting backslashes on Windows # which is the seventh circle of hell. The downside is # that this breaks custom targets whose command lines # have backslashes. If you try to fix this be sure to # check that it does not break GST. # # The bug causes file paths such as c:\foo to get escaped # into c:\\foo. # # Unfortunately we have not been able to come up with an # isolated test case for this so unless you manage to come up # with one, the only way is to test the building with Gst's # setup. Note this in your MR or ping us and we will get it # fixed. # # https://github.com/mesonbuild/meson/pull/737 cmd = [i.replace('\\', '/') for i in cmd] return (srcs, ofilenames, cmd) def run_postconf_scripts(self): env = {'MESON_SOURCE_ROOT' : self.environment.get_source_dir(), 'MESON_BUILD_ROOT' : self.environment.get_build_dir() } child_env = os.environ.copy() child_env.update(env) for s in self.build.postconf_scripts: cmd = s['exe'].get_command() + s['args'] subprocess.check_call(cmd, env=child_env) # Subprojects of subprojects may cause the same dep args to be used # multiple times. Remove duplicates here. Note that we can't dedup # libraries based on name alone, because "-lfoo -lbar -lfoo" is # a completely valid (though pathological) sequence and removing the # latter may fail. Usually only applies to static libs, though. def dedup_arguments(self, commands): includes = {} final_commands = [] previous = '-fsuch_arguments=woof' for c in commands: if c.startswith(('-I', '-L', '/LIBPATH')): if c in includes: continue includes[c] = True if previous == c: continue previous = c final_commands.append(c) return final_commands