Patch for buildings hugs with pthreads

[Sigbjorn Finne]

Hi,

just to let you know that I've folded this change into the CVS tree.
Many thanks for the contribution, keep them coming! :)

--sigbjorn

----- Original Message -----
From: "Antony Courtney" <antony@apocalypse.org>
To: <hugs-bugs@haskell.org>
Cc: "Henrik Nilsson" <Nilsson-Henrik@cs.yale.edu>
Sent: Saturday, July 07, 2001 15:08
Subject: Patch for buildings hugs with pthreads


> Hi,
>
> As I mentioned on the Haskell mailing list a few days ago, a few of us at
Yale
> are developing a system that allows Haskell code to invoke Java methods
via
> GreenCard and the Java Native Interface.  The system works quite reliably
at
> this point, including integration of the Java and Haskell garbage
collectors,
> and we have succesfully run a number of interesting test programs under
Hugs98
> on both Windows and Linux.  We are currently working on a novel mechanism
for
> mapping Java method names to Haskell function names; when that is
complete, we
> plan to make this system available to the community.
>
> However, because the Java VM is multi-threaded, I had to rebuild Hugs from
> sources under Linux to use the multi-threaded version of the C library.
The
> changes were very minor:
> - Pass the -D_REENTRANT flag to CC
> - Add -lpthread to LIBS for linking
> - #define DONT_PANIC to avoid catching signals used by the user-space
> LinuxThreads implementation.
>
> To make it as painless as possible for users to be able to use the
Java/Haskell
> bridge, whilst minimizing the impact on others, I have made modified my
local
> copy of hugs so that the above changes only take effect if
the --with-pthreads
> option is given to configure.
>
> Attached is a patch with the mods. to src/Makefile.in and
src/unix/configure.in
> to add the --with-pthreads option.  Since this change is completely
invisible
> unless hugs is built from sources using --with-pthreads, I hope that you
won't
> object to including this in the hugs distribution.
>
> The patch is in unified diff format.  If you have any problems applying
the
> patch from the diff. file or there is anything I can do to make this patch
more
> acceptable, please let me know.
>
> Thanks!
>
> -Antony Courtney
>
> --
> Antony Courtney
> Grad. Student, Dept. of Computer Science, Yale University
> antony@apocalypse.org          http://www.apocalypse.org/pub/u/antony


----------------------------------------------------------------------------
----


> diff -u -r src/Makefile.in
/usr/local/src/hugs98-Feb2001-MT/hugs98-Feb2001/src/Makefile.in
> --- src/Makefile.in Tue Jan 30 21:52:13 2001
> +++ /usr/local/src/hugs98-Feb2001-MT/hugs98-Feb2001/src/Makefile.in Sat
Jul  7 16:35:19 2001
> @@ -25,7 +25,7 @@
>  default :: hugs@EXE@ runhugs@EXE@
>
>  CC = @CC@
> -CFLAGS = @CFLAGS@ @DEBUGFLAGS@
> +CFLAGS = @CFLAGS@ @DEBUGFLAGS@ @MTCFLAGS@
>  OPTFLAGS = @OPTFLAGS@
>
>  LD = @LD@
> diff -u -r src/unix/configure.in
/usr/local/src/hugs98-Feb2001-MT/hugs98-Feb2001/src/unix/configure.in
> --- src/unix/configure.in Wed Jan 17 18:30:36 2001
> +++ /usr/local/src/hugs98-Feb2001-MT/hugs98-Feb2001/src/unix/configure.in
Sat Jul  7 16:51:57 2001
> @@ -240,6 +240,7 @@
>  AC_ARG_ENABLE(tag-checks,       [  --enable-tag-checks       runtime tag
checking (for debugging use)],AC_DEFINE(CHECK_TAGS))
>  AC_ARG_ENABLE(lint,             [  --enable-lint             enable
"lint" flags (for debugging use)])
>  AC_ARG_ENABLE(only98, [  --enable-only98           make Hugs Haskell 98
only], AC_DEFINE(HASKELL_98_ONLY))
> +AC_ARG_WITH(pthreads, [  --with-pthreads           build Hugs using
pthreads C library], AC_DEFINE(DONT_PANIC) MTCFLAGS="-D_REENTRANT";
LIBS="$LIBS -lpthread")
>
>  dnl Disabled for now because the plugin-code can't handle the change.
>  dnl If you're not using plugins, you could turn this on manually
> @@ -343,6 +344,7 @@
>  AC_SUBST(OPTFLAGS)
>  AC_SUBST(DEBUGFLAGS)
>  AC_SUBST(LDDEBUGFLAGS)
> +AC_SUBST(MTCFLAGS)
>
>  dnl Figure out sizes of objects and decide which version of Hugs to build
>
>