# Process this file with autoconf to produce a configure script, like so:
-# aclocal && autoconf && autoheader && automake
+# aclocal -I .. -I ../config && autoconf && autoheader && automake
AC_PREREQ(2.59)
AC_INIT(libmudflap, 1.0)
AC_CONFIG_SRCDIR(mf-runtime.c)
AC_CANONICAL_SYSTEM
+ACX_NONCANONICAL_TARGET
AM_INIT_AUTOMAKE
mkdir pth
fi
-pthread_create_version='""'
-AC_CHECK_HEADER(pthread.h,[
-AC_DEFINE_UNQUOTED(HAVE_PTHREAD_H, 1, [define if you have <pthread.h>])
-ac_have_pthread_h=yes
-],[
-ac_have_pthread_h=
-])
-AM_CONDITIONAL(LIBMUDFLAPTH, [test "x$ac_have_pthread_h" != "x"])
-if test "x$ac_have_pthread_h" != "x"
+AC_CHECK_HEADERS(pthread.h)
+
+AC_MSG_CHECKING([for thread model used by GCC])
+target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
+AC_MSG_RESULT([$target_thread_file])
+
+# We only support posix threads, or no threads at all.
+posix_threads=
+case ${target_thread_file} in
+ posix)
+ posix_threads=yes
+ ;;
+ single)
+ ;;
+ *)
+ echo "${target_thread_file} is an unsupported thread package" 1>&2
+ exit 1
+ ;;
+esac
+
+AM_CONDITIONAL(LIBMUDFLAPTH, [test "x$posix_threads" != "x"])
+if test "x$posix_threads" != "x"
then
build_libmudflapth=1
else
AC_SUBST(toolexecdir)
AC_SUBST(toolexeclibdir)
-if test "x$enable_shared" = "xyes" && test "x$ac_have_pthread_h" != "x"; then
+includedir=${toolexecdir}/include
+AC_SUBST(includedir)
+
+pthread_create_version='""'
+if test "x$enable_shared" = "xyes" && test "x$posix_threads" != "x"; then
# NB: don't check for -lpthread here, because then it would be
# added to LIBS. For the thread-unaware libmudflap.la, we don't
# want it there.
AC_CACHE_CHECK([for the name of the symbol used for the entry point],
[mudflap_cv_entry_point], [
for name in _start __start unknown; do
- AC_LINK_IFELSE([AC_LANG_PROGRAM([extern char $name;], [$name = 0;])],
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([extern char $name@<:@@:>@;], [$name@<:@0@:>@ = 0;])],
[break])
done
mudflap_cv_entry_point="$name"])
fi
# See if we support thread-local storage.
-LIBMUDFLAP_CHECK_TLS
+GCC_CHECK_TLS
AC_CONFIG_FILES([Makefile testsuite/Makefile testsuite/mfconfig.exp])
AC_OUTPUT