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dnl -*- Autoconf -*-
AC_DEFUN([RUBY_THREAD], [
AC_ARG_WITH(thread,
AS_HELP_STRING([--with-thread=IMPLEMENTATION], [specify the thread implementation to use]),
[THREAD_MODEL=$withval], [
THREAD_MODEL=
AS_CASE(["$target_os"],
[freebsd*], [
AC_CACHE_CHECK([whether pthread should be enabled by default],
rb_cv_enable_pthread_default,
[AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
@%:@include <osreldate.h>
@%:@if __FreeBSD_version < 502102
@%:@error pthread should be disabled on this platform
@%:@endif
]])],
rb_cv_enable_pthread_default=yes,
rb_cv_enable_pthread_default=no)])
AS_IF([test $rb_cv_enable_pthread_default = yes],
[THREAD_MODEL=pthread],
[THREAD_MODEL=none])
],
[mingw*], [
THREAD_MODEL=win32
],
[wasi*], [
THREAD_MODEL=none
],
[
THREAD_MODEL=pthread
]
)
])
AS_IF([test x"$THREAD_MODEL" = xpthread], [
AC_CHECK_HEADERS(pthread.h)
AS_IF([test x"$ac_cv_header_pthread_h" = xyes], [], [
AC_MSG_WARN("Don't know how to find pthread header on your system -- thread support disabled")
THREAD_MODEL=none
])
])
AS_IF([test x"$THREAD_MODEL" = xpthread], [
THREAD_MODEL=none
for pthread_lib in thr pthread pthreads c c_r root; do
AC_CHECK_LIB($pthread_lib, pthread_create,
[THREAD_MODEL=pthread; break])
done
AS_IF([test x"$THREAD_MODEL" = xpthread], [
AC_DEFINE(_REENTRANT)
AC_DEFINE(_THREAD_SAFE)
AC_DEFINE(HAVE_LIBPTHREAD)
AC_CHECK_HEADERS(pthread_np.h, [], [], [@%:@include <pthread.h>])
AS_CASE(["$pthread_lib:$target_os"],
[c:*], [],
[root:*], [],
[c_r:*|*:openbsd*|*:mirbsd*], [LIBS="-pthread $LIBS"],
[LIBS="-l$pthread_lib $LIBS"])
], [
AC_MSG_WARN("Don't know how to find pthread library on your system -- thread support disabled")
])
])
AS_CASE(["$THREAD_MODEL"],
[pthread], [],
[win32], [],
[none], [],
[""], [AC_MSG_ERROR(thread model is missing)],
[AC_MSG_ERROR(unknown thread model $THREAD_MODEL)])
AC_MSG_CHECKING(thread model)
AC_MSG_RESULT($THREAD_MODEL)
THREAD_IMPL_H=thread_$THREAD_MODEL.h
AS_IF([test ! -f "$srcdir/$THREAD_IMPL_H"],
[AC_MSG_ERROR('$srcdir/$THREAD_IMPL_H' must exist)])
THREAD_IMPL_SRC=thread_$THREAD_MODEL.c
AS_IF([test ! -f "$srcdir/$THREAD_IMPL_SRC"],
[AC_MSG_ERROR('$srcdir/$THREAD_IMPL_SRC' must exist)])
AC_DEFINE_UNQUOTED(THREAD_IMPL_H, ["$THREAD_IMPL_H"])
AC_DEFINE_UNQUOTED(THREAD_IMPL_SRC, ["$THREAD_IMPL_SRC"])
])dnl
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