godot/modules/SCsub
Rémi Verschelde c320a82213 SCons: Add 'split_libmodules' option to workaround linker issue
The new 'split_libmodules=yes' option is useful to work around linker
command line size limitations when linking a huge number of objects.
We're currently over 64k chars when linking libmodules.a on Windows
with MinGW, which triggers issues as seen in #30892.

Even on Linux, we can also reach linker command line size limitations
by adding more custom modules.

We force this option to True for MinGW on Windows, which fixes #30892.

Additional changes to lib splitting:

- Fix linking of the split module libs with interdependent symbols,
  hacking our way into LINKCOM and SHLINKCOM to set the `--start-group`
  and `--end-group` flags.
- Fix Python 3 compatibility in `methods.split_lib()`.
- Drop seemingly obsolete condition for 'msys' on 'posix'.
- Drop the unnecessary 'split_drivers' as the drivers lib is no longer
  too big since we moved all thirdparty builds to modules.

Co-authored-by: Hein-Pieter van Braam-Stewart <hp@tmm.cx>
2019-12-11 15:40:28 +01:00

25 lines
560 B
Python

#!/usr/bin/env python
Import('env')
env_modules = env.Clone()
Export('env_modules')
env.modules_sources = []
env_modules.add_source_files(env.modules_sources, "register_module_types.gen.cpp")
for x in env.module_list:
if (x in env.disabled_modules):
continue
env_modules.Append(CPPDEFINES=["MODULE_" + x.upper() + "_ENABLED"])
SConscript(x + "/SCsub")
if env['split_libmodules']:
env.split_lib("modules", env_lib = env_modules)
else:
lib = env_modules.add_library("modules", env.modules_sources)
env.Prepend(LIBS=[lib])