Can't get LuaJIT to compile with cygwin

Question

I am trying to install the latest version of LuaJIT on Windows. I followed the instructions for installing LuaJIT as best I could. I installed cygwin and the make packages, opened cygwin, cded to the unzipped source folder, and typed make. I get this output:

$ make
==== Building LuaJIT 2.0.3 ====
make -C src
make[1]: Entering directory '/cygdrive/c/Users/Daniel/Downloads/LuaJIT-2.0.3/LuaJIT-2.0.3/src'
CC        lj_alloc.o
lj_alloc.c:249:2: error: #error "NYI: need an equivalent of MAP_32BIT for this 64 bit OS"
 #error "NYI: need an equivalent of MAP_32BIT for this 64 bit OS"
  ^
lj_alloc.c: In function ‘direct_alloc’:
lj_alloc.c:742:5: warning: implicit declaration of function ‘CALL_MMAP’ [-Wimplicit-function-declaration]
     char *mm = (char *)(DIRECT_MMAP(mmsize));
     ^
lj_alloc.c:742:16: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
     char *mm = (char *)(DIRECT_MMAP(mmsize));
                ^
lj_alloc.c: In function ‘alloc_sys’:
lj_alloc.c:911:18: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
       char *mp = (char *)(CALL_MMAP(rsize));
                  ^
lj_alloc.c: In function ‘lj_alloc_create’:
lj_alloc.c:1143:11: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
   tbase = (char *)(CALL_MMAP(tsize));
           ^
Makefile:647: recipe for target 'lj_alloc.o' failed
make[1]: *** [lj_alloc.o] Error 1
make[1]: Leaving directory '/cygdrive/c/Users/Daniel/Downloads/LuaJIT-2.0.3/LuaJIT-2.0.3/src'
Makefile:103: recipe for target 'default' failed
make: *** [default] Error 2

Searching for any of these error messages turns up nothing. What did I do wrong?

rurban rurban · Accepted Answer · 2014-03-24T01:33:52

If you read the documentation you'll see that cygwin64 is not yet supported, only 32 bit. http://luajit.org/install.html

However it doesn't look hard to add support to it. Just try. e.g. the documentation suggests:

Configuring LuaJIT

The standard configuration should work fine for most installations. Usually there is no need to tweak the settings. The following files hold all user-configurable settings:

src/luaconf.h sets some configuration variables.

Makefile has settings for installing LuaJIT (POSIX only).

src/Makefile has settings for compiling LuaJIT under POSIX, MinGW or Cygwin.

src/msvcbuild.bat has settings for compiling LuaJIT with MSVC or WinSDK.

Please read the instructions given in these files, before changing any settings.

So fixing src/Makefile seems to be the easiest. Unfortunately I'm a bit sick currently and cannot do it right now. I've looked a bit and this patch fixes the CALL_MMAP problem: --- src/lj_alloc.c~ 2014-03-23 20:47:09.000000000 -0500 +++ src/lj_alloc.c 2014-03-23 20:47:54.145877000 -0500 @@ -188,7 +188,7 @@ return ptr; }

-#elif LJ_TARGET_OSX || LJ_TARGET_PS4 || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__sun__)
+#elif LJ_TARGET_OSX || LJ_TARGET_PS4 || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__sun__) || defined(__CYGWIN__)

 /* OSX and FreeBSD mmap() use a naive first-fit linear search.
 ** That's perfect for us. Except that -pagezero_size must be set for OSX,

Add a __CYGWIN__ check.

Now just the lj_err_unwind_win64 unwinder is not linked. This is for Mike Pall now. Not sure if EXT or INT is appropriate and how it is linked.

Can't get LuaJIT to compile with cygwin

2 Answers

Configuring LuaJIT