Re: Current build failure when libgcj is enabled on i386-unknown-freebsd4.2

[Jeff Sturm <jsturm at one-point dot com>]

On Tue, 24 Apr 2001, Loren James Rittle wrote:
> During the configuration of boehm-gc, it doesn't detect the mismatch
> between the configuration requested and the fact that there is no code
> path for generic POSIX threads.  It appears that this version of
> boehm-gc only supports POSIX threads on some platforms even though
> additional platforms support the required POSIX pthread_* API.

Yep.  The GC needs to know how to find all threads, plus suspend/restart
individual threads.  Unfortunately that can't be done with generic
pthreads, so there is a port for each supported OS.

For the rest you can configure threads without GC, or GC without
threads.  I consider it a bug that boehm-gc/configure doesn't abort if you
attempt to build with posix threads on an unsupported target.  Here's a
suggestion:

diff -u -p -r1.21 configure.in
--- configure.in        2000/12/30 12:18:38     1.21
+++ configure.in        2001/04/25 07:24:35
@@ -60,7 +60,7 @@ if test "$THREADS" = yes; then
        ;;
     *)
        # For now.
-       THREADS=none
+       THREADS=posix
        ;;
    esac
 fi
@@ -84,6 +84,9 @@ case "$THREADS" in
        ;;
      *-*-irix*)
        AC_DEFINE(IRIX_THREADS)
+       ;;
+     *)
+       AC_MSG_ERROR(posix threads not yet supported on $host)
        ;;
     esac
     THREADLIBS=-lpthread