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The tree carried two prebuilt Lua static libraries and a copy of the Lua public headers. lua51.lib is 5.1.2 and matched the headers; lua51.vc9.lib is 5.1.4 and was dead weight — it came second in Ja2_Libraries, so the linker resolved every Lua symbol out of lua51.lib and never pulled an object from it. Just as well, since it asks for /DEFAULTLIB:MSVCRT while we build /MT. ext/lua-5.1.5 is the upstream tarball unmodified, built as lua51 the way the other vendored libraries are, and its src directory replaces lua/ as the home of lua.h, luaconf.h, lauxlib.h and lualib.h. Those four headers were stock 5.1.2 retabbed, so 5.1.5 is bugfix-only against what the game compiled against; the bytecode format is unchanged across 5.1.x and every script under gamedir is plain source anyway. lua/lua.hpp had no includers and returns to etc/ where upstream keeps it. /SAFESEH:NO goes with it. Its two stated reasons were lua51.lib and the smackw32 import library, and both are now gone: every remaining prebuilt static library is SAFESEH-clean (libexpatMT.lib 5 of 5 members with @feat.00 = 0x1, RakNetLibStatic.lib 79 of 79), and lld-link emits a 3155-entry SEHandlerTable without it. The /MT comment blamed the wrong library. lua51.lib carried no linker directives at all; RakNetLibStatic.lib is what pins us to the static runtime, with /DEFAULTLIB:LIBCMT and /DEFAULTLIB:libcpmt. Verified by building all four applications in Debug and Release, and by linking the tarball's own lua.c against our lua51.lib with the build's clang-cl flags and running it under Wine: 5.1 stdlib, GC, coroutines and the x86 __asm fld/fistp lua_number2int fast path all behave. The game itself could not be launched here — this checkout's gamedir has loose Data directories but no SLF archives, so VFS aborts on Data\Ambient.slf long before any script runs. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
41 lines
605 B
Lua
41 lines
605 B
Lua
-- fibonacci function with cache
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-- very inefficient fibonacci function
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function fib(n)
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N=N+1
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if n<2 then
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return n
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else
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return fib(n-1)+fib(n-2)
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end
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end
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-- a general-purpose value cache
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function cache(f)
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local c={}
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return function (x)
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local y=c[x]
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if not y then
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y=f(x)
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c[x]=y
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end
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return y
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end
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end
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-- run and time it
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function test(s,f)
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N=0
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local c=os.clock()
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local v=f(n)
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local t=os.clock()-c
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print(s,n,v,t,N)
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end
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n=arg[1] or 24 -- for other values, do lua fib.lua XX
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n=tonumber(n)
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print("","n","value","time","evals")
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test("plain",fib)
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fib=cache(fib)
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test("cached",fib)
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