SCons: Split libmodules.a in folder-based libs
This removes the need for the hacky split_libmodules logic on Windows, since all libs are now of manageable size.
This commit is contained in:
Rémi Verschelde
parent
7711e9f93b
commit
4e2dbb1bc0
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@ -78,7 +78,6 @@ env_base.__class__.add_module_version_string = methods.add_module_version_string
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env_base.__class__.add_source_files = methods.add_source_files
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env_base.__class__.use_windows_spawn_fix = methods.use_windows_spawn_fix
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env_base.__class__.split_lib = methods.split_lib
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env_base.__class__.add_shared_library = methods.add_shared_library
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env_base.__class__.add_library = methods.add_library
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@ -130,7 +129,6 @@ opts.Add(BoolVariable('dev', "If yes, alias for verbose=yes warnings=extra werro
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opts.Add('extra_suffix', "Custom extra suffix added to the base filename of all generated binary files", '')
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opts.Add(BoolVariable('vsproj', "Generate a Visual Studio solution", False))
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opts.Add(EnumVariable('macports_clang', "Build using Clang from MacPorts", 'no', ('no', '5.0', 'devel')))
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opts.Add(BoolVariable('split_libmodules', "Split intermediate libmodules.a in smaller chunks to prevent exceeding linker command line size (forced to True when using MinGW)", False))
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opts.Add(BoolVariable('disable_3d', "Disable 3D nodes for a smaller executable", False))
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opts.Add(BoolVariable('disable_advanced_gui', "Disable advanced GUI nodes and behaviors", False))
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opts.Add(BoolVariable('no_editor_splash', "Don't use the custom splash screen for the editor", False))
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61
methods.py
61
methods.py
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@ -257,67 +257,6 @@ def use_windows_spawn_fix(self, platform=None):
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self['SPAWN'] = mySpawn
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def split_lib(self, libname, src_list = None, env_lib = None):
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env = self
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num = 0
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cur_base = ""
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max_src = 64
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list = []
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lib_list = []
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if src_list is None:
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src_list = getattr(env, libname + "_sources")
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if type(env_lib) == type(None):
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env_lib = env
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for f in src_list:
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fname = ""
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if type(f) == type(""):
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fname = env.File(f).path
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else:
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fname = env.File(f)[0].path
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fname = fname.replace("\\", "/")
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base = "/".join(fname.split("/")[:2])
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if base != cur_base and len(list) > max_src:
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if num > 0:
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lib = env_lib.add_library(libname + str(num), list)
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lib_list.append(lib)
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list = []
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num = num + 1
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cur_base = base
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list.append(f)
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lib = env_lib.add_library(libname + str(num), list)
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lib_list.append(lib)
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lib_base = []
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env_lib.add_source_files(lib_base, "*.cpp")
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lib = env_lib.add_library(libname, lib_base)
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lib_list.insert(0, lib)
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env.Prepend(LIBS=lib_list)
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# When we split modules into arbitrary chunks, we end up with linking issues
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# due to symbol dependencies split over several libs, which may not be linked
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# in the required order. We use --start-group and --end-group to tell the
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# linker that those archives should be searched repeatedly to resolve all
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# undefined references.
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# As SCons doesn't give us much control over how inserting libs in LIBS
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# impacts the linker call, we need to hack our way into the linking commands
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# LINKCOM and SHLINKCOM to set those flags.
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if '-Wl,--start-group' in env['LINKCOM'] and '-Wl,--start-group' in env['SHLINKCOM']:
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# Already added by a previous call, skip.
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return
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env['LINKCOM'] = str(env['LINKCOM']).replace('$_LIBFLAGS',
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'-Wl,--start-group $_LIBFLAGS -Wl,--end-group')
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env['SHLINKCOM'] = str(env['LINKCOM']).replace('$_LIBFLAGS',
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'-Wl,--start-group $_LIBFLAGS -Wl,--end-group')
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def save_active_platforms(apnames, ap):
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for x in ap:
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@ -8,17 +8,26 @@ env_modules = env.Clone()
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Export('env_modules')
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# Header with MODULE_*_ENABLED defines.
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env.CommandNoCache("modules_enabled.gen.h", Value(env.module_list), modules_builders.generate_modules_enabled)
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env.modules_sources = []
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env_modules.add_source_files(env.modules_sources, "register_module_types.gen.cpp")
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# libmodule_<name>.a for each active module.
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for module in env.module_list:
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env.modules_sources = []
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SConscript(module + "/SCsub")
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if env['split_libmodules']:
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env.split_lib("modules", env_lib = env_modules)
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else:
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lib = env_modules.add_library("modules", env.modules_sources)
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# Some modules are not linked automatically but can be enabled optionally
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# on iOS, so we handle those specially.
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if env["platform"] == "iphone" and module in ["arkit", "camera"]:
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continue
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lib = env_modules.add_library("module_%s" % module, env.modules_sources)
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env.Prepend(LIBS=[lib])
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# libmodules.a with only register_module_types.
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# Must be last so that all libmodule_<name>.a libraries are on the right side
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# in the linker command.
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env.modules_sources = []
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env_modules.add_source_files(env.modules_sources, "register_module_types.gen.cpp")
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lib = env_modules.add_library("modules", env.modules_sources)
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env.Prepend(LIBS=[lib])
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@ -293,12 +293,7 @@ def configure_mingw(env):
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## Compiler configuration
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if (os.name == "nt"):
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# Force splitting libmodules.a in multiple chunks to work around
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# issues reaching the linker command line size limit, which also
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# seem to induce huge slowdown for 'ar' (GH-30892).
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env['split_libmodules'] = True
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else:
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if os.name != "nt":
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env["PROGSUFFIX"] = env["PROGSUFFIX"] + ".exe" # for linux cross-compilation
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if (env["bits"] == "default"):
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