This solves potential issues when tests run first and strace is rebuilt
only after they have finished. As noted in [1], providing the current
directory explicitly should help.
[1] https://www.gnu.org/software/automake/manual/html_node/Subdirectories.html
* Makefile.am (SUBDIRS): Prepend the current directory.
if HAVE_MX32_RUNTIME
TESTS_MX32 = tests-mx32
endif
-SUBDIRS = tests $(TESTS_M32) $(TESTS_MX32)
+SUBDIRS = . tests $(TESTS_M32) $(TESTS_MX32)
bin_PROGRAMS = strace
man_MANS = strace.1