+fi
+
+# Check if lex fails using -o
+if test "$arith" = "yes" ; then
+if test "$force_no_lex_o" = "yes" ; then
+ lex_use_o="no"
+else
+$LEX -o lex.yy.c exp/expression-parser.l 2> /dev/null
+if test "$?" = "0" ; then
+ lex_use_o="yes"
+else
+ lex_use_o="no"
+fi
+fi
+fi
+
+print_config "lex/yacc for arithmetic" "$arith"
+
+##########################################
+# Check whether we have setmntent/getmntent
+if test "$getmntent" != "yes" ; then
+ getmntent="no"
+fi
+cat > $TMPC << EOF
+#include <stdio.h>
+#include <mntent.h>
+int main(int argc, char **argv)
+{
+ FILE *mtab = setmntent(NULL, "r");
+ struct mntent *mnt = getmntent(mtab);
+ endmntent(mtab);
+ return 0;
+}
+EOF
+if compile_prog "" "" "getmntent"; then
+ getmntent="yes"
+fi
+print_config "getmntent" "$getmntent"
+
+##########################################
+# Check whether we have getmntinfo
+# These are originally added for BSDs, but may also work
+# on other operating systems with getmntinfo(3).
+
+# getmntinfo(3) for FreeBSD/DragonFlyBSD/OpenBSD.
+# Note that NetBSD needs -Werror to catch warning as error.
+if test "$getmntinfo" != "yes" ; then
+ getmntinfo="no"
+fi
+cat > $TMPC << EOF
+#include <stdio.h>
+#include <sys/param.h>
+#include <sys/mount.h>
+int main(int argc, char **argv)
+{
+ struct statfs *st;
+ return getmntinfo(&st, MNT_NOWAIT);
+}
+EOF
+if compile_prog "-Werror" "" "getmntinfo"; then
+ getmntinfo="yes"
+fi
+print_config "getmntinfo" "$getmntinfo"
+
+# getmntinfo(3) for NetBSD.
+if test "$getmntinfo_statvfs" != "yes" ; then
+ getmntinfo_statvfs="no"
+fi
+cat > $TMPC << EOF
+#include <stdio.h>
+#include <sys/statvfs.h>
+int main(int argc, char **argv)
+{
+ struct statvfs *st;
+ return getmntinfo(&st, MNT_NOWAIT);
+}
+EOF
+# Skip the test if the one with statfs arg is detected.
+if test "$getmntinfo" != "yes" && compile_prog "-Werror" "" "getmntinfo_statvfs"; then
+ getmntinfo_statvfs="yes"
+ print_config "getmntinfo_statvfs" "$getmntinfo_statvfs"
+fi
+
+##########################################
+# Check whether we have _Static_assert
+if test "$static_assert" != "yes" ; then
+ static_assert="no"
+fi
+cat > $TMPC << EOF
+#include <assert.h>
+#include <stdlib.h>
+#include <stddef.h>
+
+struct foo {
+ int a, b;
+};
+
+int main(int argc, char **argv)
+{
+ _Static_assert(offsetof(struct foo, a) == 0 , "Check");
+ return 0 ;
+}
+EOF
+if compile_prog "" "" "static_assert"; then
+ static_assert="yes"
+fi
+print_config "Static Assert" "$static_assert"
+
+##########################################
+# Check whether we have bool / stdbool.h
+if test "$have_bool" != "yes" ; then
+ have_bool="no"
+fi
+cat > $TMPC << EOF
+#include <stdbool.h>
+int main(int argc, char **argv)
+{
+ bool var = true;
+ return var != false;
+}
+EOF
+if compile_prog "" "" "bool"; then
+ have_bool="yes"
+fi
+print_config "bool" "$have_bool"