[tlbuild] LuaJIT on OpenBSD

[Mojca Miklavec]

Hi,

Replying to myself after quite a while ...

When building luajittex on OpenBSD with clang one apparently needs
something like
    LDFLAGS="-lc++abi -lpthread"
to get the missing functionality.

I suspect that in TeX Live LuaJIT was built in pure C, while in LuaTeX
repository it might have been linked with some other C++ libraries
(blind guess). When LuaTeX got rid of all C++ libraries, LuaJIT would
no longer compile there either.

Mojca

On Sun, 1 Apr 2018 at 10:50, Mojca Miklavec wrote:
>
> Hi,
>
> Before the switch to C++11 and when compiling with gcc, luajitex
> compiled on OpenBSD. Now I switched to clang and I'm getting undefined
> references:
>
> /bin/sh ./libtool  --tag=CC   --mode=link clang -Wimplicit
> -Wreturn-type -Wdeclaration-after-statement -Wno-unknown-pragmas -g
> -O2 -export-dynamic   -o mfluajit mfluajitdir/mfluajit-mfluajitextra.o
> libmfluajit.a lib/lib.a /path/to/Work/texk/kpathsea/libkpathsea.la
> window/libwindow.a -L/usr/X11R6/lib  -lSM -lICE -lXext
> -L/usr/X11R6/lib -lX11  /path/to/Work/libs/luajit/libtexluajit.la -lm
> libtool: link: clang -Wimplicit -Wreturn-type
> -Wdeclaration-after-statement -Wno-unknown-pragmas -g -O2 -o mfluajit
> mfluajitdir/mfluajit-mfluajitextra.o -Wl,-E  libmfluajit.a lib/lib.a
> /path/to/Work/texk/kpathsea/.libs/libkpathsea.a window/libwindow.a
> -L/usr/X11R6/lib -lSM -lICE -lXext -lX11
> /path/to/Work/libs/luajit/.libs/libtexluajit.a -lm
> -Wl,-rpath,/usr/X11R6/lib -Wl,-rpath,/usr/X11R6/lib
> mfluajitdir/mfluajit-mfluajitextra.o: In function `calledit':
> ../../../texk/web2c/lib/texmfmp.c:2492: warning: warning: sprintf() is
> often misused, please use snprintf()
> lib/lib.a(openclose.o): In function `open_input':
> ../../../../texk/web2c/lib/openclose.c:236: warning: warning: strcpy()
> is almost always misused, please use strlcpy()
> /path/to/Work/texk/kpathsea/.libs/libkpathsea.a(libkpathsea_la-concat.o):
> In function `concat':
> ../../../texk/kpathsea/concat.c:32: warning: warning: strcat() is
> almost always misused, please use strlcat()
> /path/to/Work/libs/luajit/.libs/libtexluajit.a(lj_err.o): In function
> `lj_err_unwind_dwarf':
> ../../../libs/luajit/LuaJIT-src/src/lj_err.c:236: undefined reference
> to `_Unwind_GetCFA'
> ../../../libs/luajit/LuaJIT-src/src/lj_err.c:254: undefined reference
> to `_Unwind_DeleteException'
>
> I know we are not shipping binaries, so this in not critical, but I'm
> just curious if anyone has any idea.
>
> Thank you,
>     Mojca