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the default setting of the --enable-threads/--disable-threads

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option is now operating system dependent; we only enable threads
by default on systems where they actually work
This commit is contained in:
Andreas Gustafsson
2001-05-03 17:26:52 +00:00
parent f252f91e27
commit e2b585787f
1 changed files with 58 additions and 8 deletions
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66
configure.in
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@@ -18,7 +18,7 @@ AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
esyscmd([sed "s/^/# /" COPYRIGHT])dnl
AC_DIVERT_POP()dnl
AC_REVISION($Revision: 1.247 $)
AC_REVISION($Revision: 1.248 $)
AC_INIT(lib/dns/name.c)
AC_PREREQ(2.13)
@@ -378,23 +378,73 @@ esac
#
# First, decide whether to use multithreading or not.
#
AC_MSG_CHECKING(whether to look for thread support)
# Enable multithreading by default on systems where it is known
# to work well, and where debugging of multithreaded programs
# is supported.
#
AC_MSG_CHECKING(whether to build with thread support)
case $host in
*-dec-osf*)
use_threads=true ;;
*-solaris-2.[0-6])
# Thread signals are broken on Solaris 2.6; they are sometimes
# delivered to the wrong thread.
use_threads=false ;;
*-solaris-2.*)
use_threads=true ;;
*-ibm-aix*)
use_threads=true ;;
*-UnixWare*)
use_threads=false ;;
*-netbsd*)
# Socket I/O optimizations introduced in 9.2 expose a
# bug in unproven-pthreads; see PR #12650
use_threads=false ;;
*-openbsd*)
# OpenBSD userss have reported that named dumps core on
# startup when built with threads.
use_threads=false ;;
*-freebsd*)
use_threads=false ;;
*-bsdi*)
# Thread signals do not appear to work reliably on BSDI.
use_threads=false ;;
*-linux*)
# Threads are disabled on Linux by default because most
# Linux kernels produce unusable core dumps from multithreaded
# programs, and because of limitations in setuid().
# and problems with the -u option.
use_threads=false ;;
*)
use_threads=false ;;
esac
AC_ARG_ENABLE(threads,
[ --disable-threads disable multithreading])
[ --enable-threads enable multithreading])
case "$enable_threads" in
yes|'')
AC_MSG_RESULT(yes)
yes)
use_threads=true
;;
no)
AC_MSG_RESULT(no)
use_threads=false
;;
'')
# Use system-dependent default
;;
*)
AC_MSG_ERROR([--enable-threads takes yes or no])
;;
esac
if $use_threads
then
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
if $use_threads
then
#
@@ -428,7 +478,7 @@ then
if test ! -d $LOCALBASE/pthreads
then
AC_MSG_RESULT(none)
use_threads=false
AC_MSG_ERROR("could not find thread libraries")
fi
if $use_threads
@@ -449,7 +499,7 @@ then
AC_CHECK_LIB(pthread, __pthread_create_system,,
AC_CHECK_LIB(c_r, pthread_create,,
AC_CHECK_LIB(c, pthread_create,,
use_threads=false)))))
AC_MSG_ERROR("could not find thread libraries"))))))
;;
esac
fi