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Diffstat (limited to 'config.threads.in')
| -rw-r--r-- | config.threads.in | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/config.threads.in b/config.threads.in new file mode 100644 index 0000000..2c007ec --- /dev/null +++ b/config.threads.in @@ -0,0 +1,125 @@ +# +# 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 $host in +*-dec-osf*) + use_threads=true ;; +[*-solaris2.[0-6]]) + # Thread signals are broken on Solaris 2.6; they are sometimes + # delivered to the wrong thread. + use_threads=false ;; +*-solaris*) + use_threads=true ;; +*-hp-hpux10*) + use_threads=false ;; +*-hp-hpux11*) + use_threads=true ;; +*-sgi-irix*) + use_threads=true ;; +*-sco-sysv*uw*|*-*-sysv*UnixWare*) + # UnixWare + use_threads=false ;; +*-*-sysv*OpenUNIX*) + # UnixWare + use_threads=true ;; +[*-netbsd[1234].*]) + # NetBSD earlier than NetBSD 5.0 has poor pthreads. + # Don't use it by default. + use_threads=false ;; +*-netbsd*) + use_threads=true ;; +*-openbsd*) + # OpenBSD users have reported that named dumps core on + # startup when built with threads. + use_threads=false ;; +[*-freebsd[1234567].*]) + # Threads are broken at least up to FreeBSD 4.11. + # FreeBSD 5, 6 and 7 we have never officially supported threads + # on. YMMV + use_threads=false ;; +*-freebsd*) + use_threads=true ;; +*-linux*) + use_threads=true ;; +*-darwin[[123456789]].*) + use_threads=false ;; +*-darwin*.*) + use_threads=true ;; +*) + use_threads=true ;; +esac + +AC_ARG_ENABLE(threads, + [ --enable-threads enable multithreading]) +case "$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 |