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_CHECK_LIB(dl, dlsym)
-TL_AC_GCC_VERSION([$srcdir/..])
-
# Calculate toolexeclibdir
# Also toolexecdir, though it's only used in toolexeclibdir
case ${version_specific_libs} in
# and header files if --enable-version-specific-runtime-libs option
# is selected.
toolexecdir='$(libdir)/gcc/$(target_alias)'
- toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
+ toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
;;
no)
if test -n "$with_cross_host" &&
AC_SUBST(toolexecdir)
AC_SUBST(toolexeclibdir)
-if test "x$enable_shared" = "xyes" && test "x$ac_have_pthread_h" != "x"; then
+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_SUBST(SECTION_FLAGS)
+# Check for the name of the symbol used for the entry point.
+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;])],
+ [break])
+done
+mudflap_cv_entry_point="$name"])
+if test "$mudflap_cv_entry_point" = unknown; then
+ AC_MSG_ERROR([none of the known symbol names works])
+fi
+AC_DEFINE_UNQUOTED([ENTRY_POINT], [$mudflap_cv_entry_point],
+ [Define to the name of the symbol used for the entry point.])
+
+
if test ${multilib} = yes; then
multilib_arg="--enable-multilib"
else
multilib_arg=
fi
-AC_CONFIG_FILES([Makefile testsuite/Makefile testsuite/mfconfig.exp mf-runtime.h])
+# See if we support thread-local storage.
+GCC_CHECK_TLS
+
+AC_CONFIG_FILES([Makefile testsuite/Makefile testsuite/mfconfig.exp])
AC_OUTPUT