2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt#

0c27b3fe77ac1d5094ba3521e8142d9e7973133fMark Andrews# Begin pthreads checking.

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt#

0c27b3fe77ac1d5094ba3521e8142d9e7973133fMark Andrews# First, decide whether to use multithreading or not.

0c27b3fe77ac1d5094ba3521e8142d9e7973133fMark Andrews#

0c27b3fe77ac1d5094ba3521e8142d9e7973133fMark Andrews# Enable multithreading by default on systems where it is known

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt# to work well, and where debugging of multithreaded programs

2eeb74d1cf5355dd98f6d507a10086e16bb08c4bTinderbox User# is supported.

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt#

83a28ca274521e15086fc39febde507bcc4e145eMark Andrews

30eec077db2bdcb6f2a0dc388a3cdde2ede75ec1Mark AndrewsAC_MSG_CHECKING(whether to build with thread support)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt

821350367e2c7313c02eb275e8e05d5193b47cfdJeremy C. Reedcase $host in

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-dec-osf*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=true ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt[*-solaris2.[0-6]])

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # Thread signals are broken on Solaris 2.6; they are sometimes

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # delivered to the wrong thread.

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=false ;;

2637d30fbd235fe98145f4312b10cc41a13bf7dcJeremy C. Reed*-solaris*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=true ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-ibm-aix*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=true ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-hp-hpux10*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=false ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-hp-hpux11*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=true ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-sgi-irix*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=true ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-sco-sysv*uw*|*-*-sysv*UnixWare*)

2637d30fbd235fe98145f4312b10cc41a13bf7dcJeremy C. Reed # UnixWare

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=false ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-*-sysv*OpenUNIX*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # UnixWare

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=true ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt[*-netbsd[1234].*])

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # NetBSD earlier than NetBSD 5.0 has poor pthreads.

2637d30fbd235fe98145f4312b10cc41a13bf7dcJeremy C. Reed # Don't use it by default.

2637d30fbd235fe98145f4312b10cc41a13bf7dcJeremy C. Reed use_threads=false ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-netbsd*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=true ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-openbsd*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # OpenBSD users have reported that named dumps core on

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # startup when built with threads.

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=false ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt[*-freebsd[1234567].*])

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # Threads are broken at least up to FreeBSD 4.11.

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # FreeBSD 5, 6 and 7 we have never officially supported threads

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt # on. YMMV

30eec077db2bdcb6f2a0dc388a3cdde2ede75ec1Mark Andrews use_threads=false ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-freebsd*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=true ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt[*-bsdi[234]*])

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # Thread signals do not work reliably on some versions of BSD/OS.

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=false ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-bsdi5*)

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt use_threads=true ;;

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt*-linux*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=true ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-darwin[[123456789]].*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=false ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*-darwin*.*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=true ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt use_threads=true ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Huntesac

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt

2b8bed6681d1541474f022586cbe728dfce36880Evan HuntAC_ARG_ENABLE(threads,

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt [ --enable-threads enable multithreading])

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Huntcase "$enable_threads" in

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt yes)

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt use_threads=true

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt ;;

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt no)

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt use_threads=false

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt ;;

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt '')

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt # Use system-dependent default

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt ;;

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt *)

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt AC_MSG_ERROR([--enable-threads takes yes or no])

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt ;;

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Huntesac

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Hunt

3e7aa395774dfb23fe36a30a70b13624487d37b8Evan Huntif $use_threads

2b8bed6681d1541474f022586cbe728dfce36880Evan Huntthen

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt AC_MSG_RESULT(yes)

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Huntelse

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_MSG_RESULT(no)

2b8bed6681d1541474f022586cbe728dfce36880Evan Huntfi

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Huntif $use_threads

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Huntthen

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt #

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # Search for / configure pthreads in a system-dependent fashion.

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt #

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt case "$host" in

30eec077db2bdcb6f2a0dc388a3cdde2ede75ec1Mark Andrews *-freebsd*)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # We don't want to set -lpthread as that break

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # the ability to choose threads library at final

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt # link time and is not valid for all architectures.

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt PTHREAD=

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt if test "X$GCC" = "Xyes"; then

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt saved_cc="$CC"

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt CC="$CC -pthread"

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_MSG_CHECKING(for gcc -pthread support);

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_TRY_LINK([#include <pthread.h>],

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt [printf("%x\n", pthread_create);],

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt PTHREAD="yes"

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_MSG_RESULT(yes),

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_MSG_RESULT(no))

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt CC="$saved_cc"

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt fi

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt if test "X$PTHREAD" != "Xyes"; then

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_CHECK_LIB(pthread, pthread_create,,

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_CHECK_LIB(thr, thread_create,,

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_CHECK_LIB(c_r, pthread_create,,

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_CHECK_LIB(c, pthread_create,,

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_MSG_ERROR("could not find thread libraries")))))

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt fi

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt *)

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_CHECK_LIB(pthread, pthread_create,,

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_CHECK_LIB(pthread, __pthread_create,,

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_CHECK_LIB(pthread, __pthread_create_system,,

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_CHECK_LIB(c_r, pthread_create,,

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_CHECK_LIB(c, pthread_create,,

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt AC_MSG_ERROR("could not find thread libraries"))))))

14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt ;;

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt esac

2b8bed6681d1541474f022586cbe728dfce36880Evan Huntfi

2b8bed6681d1541474f022586cbe728dfce36880Evan Hunt