summaryrefslogtreecommitdiffstats
path: root/contrib/bind9/config.threads.in
blob: f41d68e1d5657aecc2c27b6ae5ca24d94c1b681e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
#
# Begin pthreads checking.
#
# First, decide whether to use multithreading or not.
#
# 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 ;;
[*-solaris2.[0-6]])
	# Thread signals are broken on Solaris 2.6; they are sometimes
	# delivered to the wrong thread.
	use_threads=false ;;
*-solaris*)
	use_threads=true ;;
*-ibm-aix*)
	use_threads=true ;;
*-hp-hpux10*)
	use_threads=false ;;
*-hp-hpux11*)
	use_threads=true ;;
*-sgi-irix*)
	use_threads=true ;;
*-sco-sysv*uw*|*-*-sysv*UnixWare*)
        # UnixWare
	use_threads=false ;;
*-*-sysv*OpenUNIX*)
        # UnixWare
	use_threads=true ;;
[*-netbsd[1234].*])
	# NetBSD earlier than NetBSD 5.0 has poor pthreads.
	#  Don't use it by default.
	use_threads=false ;;
*-netbsd*)
	use_threads=true ;;
*-openbsd*)
	# OpenBSD users have reported that named dumps core on
	# startup when built with threads.
	use_threads=false ;;
*-freebsd*)
	use_threads=false ;;
[*-bsdi[234]*])
	# Thread signals do not work reliably on some versions of BSD/OS.
	use_threads=false ;;
*-bsdi5*)
	use_threads=true ;;
*-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().
	use_threads=false ;;	
*)
	use_threads=false ;;
esac

AC_ARG_ENABLE(threads,
	[  --enable-threads        enable multithreading])
case "$enable_threads" in
	yes)
		use_threads=true
		;;
	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 $use_threads
then
	#
	# Search for / configure pthreads in a system-dependent fashion.
	#
	case "$host" in
		*-freebsd*)
			# We don't want to set -lpthread as that break
			# the ability to choose threads library at final
			# link time and is not valid for all architectures.
			
			PTHREAD=
			if test "X$GCC" = "Xyes"; then
				saved_cc="$CC"
				CC="$CC -pthread"
				AC_MSG_CHECKING(for gcc -pthread support);
				AC_TRY_LINK([#include <pthread.h>],
					    [printf("%x\n", pthread_create);],
					    PTHREAD="yes"
					    AC_MSG_RESULT(yes),
					    AC_MSG_RESULT(no))
				CC="$saved_cc"
			fi
			if test "X$PTHREAD" != "Xyes"; then
				AC_CHECK_LIB(pthread, pthread_create,,
				AC_CHECK_LIB(thr, thread_create,,
				AC_CHECK_LIB(c_r, pthread_create,,
				AC_CHECK_LIB(c, pthread_create,,
				AC_MSG_ERROR("could not find thread libraries")))))
			fi
			;;
		*)
			AC_CHECK_LIB(pthread, pthread_create,,
				AC_CHECK_LIB(pthread, __pthread_create,,
				AC_CHECK_LIB(pthread, __pthread_create_system,,
				AC_CHECK_LIB(c_r, pthread_create,,
				AC_CHECK_LIB(c, pthread_create,,
				AC_MSG_ERROR("could not find thread libraries"))))))
		;;
	esac
fi
OpenPOWER on IntegriCloud