matthew/The-Powder-Toy
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Allow exporting Lua symbols

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Which optionally enables loading Lua shared modules from within even static TPT. Not that anyone actually needs this.

This currently can't work on Windows because DLLs there import symbols by [module name, symbol name] rather than just symbol name. One could in theory export Lua symbols from TPT (I don't know the exact MSVC hack this would require, .def files?) and place a lua51.dll next to the executable that just re-exports them, see https://learn.microsoft.com/en-us/cpp/build/reference/exports?view=msvc-170 , but I've yet to try this.
This commit is contained in:
Tamás Bálint Misius 2024-02-21 10:07:13 +01:00
parent bfdfebc1d5
commit c1c1daa9e5
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16
meson.build
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@ -376,6 +376,22 @@ if host_platform == 'emscripten'
'-o', app_exe + '.js', # so we get a .wasm, and a .js
]
endif
if get_option('export_lua_symbols')
if is_static and lua_variant != 'none' and not project_export_dynamic
if host_platform == 'windows'
error('Lua symbols are currently impossible to export correctly on Windows')
elif c_compiler.has_link_argument('-Wl,--export-dynamic-symbol')
project_link_args += [
'-Wl,--export-dynamic-symbol=lua_*',
'-Wl,--export-dynamic-symbol=luaL_*',
'-Wl,--export-dynamic-symbol=luaopen_*',
]
else
warning('your linker does not support -Wl,--export-dynamic-symbol so Meson will be instructed to export all symbols in order to enable loading Lua shared modules, which may blow up the size of the resulting binary')
project_export_dynamic = true
endif
endif
endif
if get_option('build_powder')
powder_deps += project_deps + [

6
meson_options.txt
View File

@ -305,3 +305,9 @@ option(
value: true,
description: 'Ask Windows nicely for UTF-8 as the codepage'
)
option(
'export_lua_symbols',
type: 'boolean',
value: false,
description: 'Export Lua symbols to enable loading of Lua shared modules'
)