the 'os wrappers' test fails when compiling statically with musl due to the
creation of a duplicate symbol.

--- a/Makefile.in	2020-02-11 23:46:12.000000000 +0000
+++ b/Makefile.in	2020-09-04 00:13:35.070000000 +0000
@@ -146,7 +146,6 @@
 @ENABLE_LIBRARIES_TRUE@	fixed-test$(EXEEXT) \
 @ENABLE_LIBRARIES_TRUE@	interface-test$(EXEEXT) \
 @ENABLE_LIBRARIES_TRUE@	list-test$(EXEEXT) map-test$(EXEEXT) \
-@ENABLE_LIBRARIES_TRUE@	os-wrappers-test$(EXEEXT) \
 @ENABLE_LIBRARIES_TRUE@	sanity-test$(EXEEXT) \
 @ENABLE_LIBRARIES_TRUE@	socket-test$(EXEEXT) \
 @ENABLE_LIBRARIES_TRUE@	queue-test$(EXEEXT) proxy-test$(EXEEXT) \
@@ -393,12 +392,6 @@
 newsignal_test_OBJECTS = $(am_newsignal_test_OBJECTS)
 @ENABLE_LIBRARIES_TRUE@newsignal_test_DEPENDENCIES =  \
 @ENABLE_LIBRARIES_TRUE@	libtest-runner.la
-am__os_wrappers_test_SOURCES_DIST = tests/os-wrappers-test.c
-@ENABLE_LIBRARIES_TRUE@am_os_wrappers_test_OBJECTS =  \
-@ENABLE_LIBRARIES_TRUE@	tests/os-wrappers-test.$(OBJEXT)
-os_wrappers_test_OBJECTS = $(am_os_wrappers_test_OBJECTS)
-@ENABLE_LIBRARIES_TRUE@os_wrappers_test_DEPENDENCIES =  \
-@ENABLE_LIBRARIES_TRUE@	libtest-runner.la
 am__protocol_logger_test_SOURCES_DIST = tests/protocol-logger-test.c
 @ENABLE_LIBRARIES_TRUE@am_protocol_logger_test_OBJECTS =  \
 @ENABLE_LIBRARIES_TRUE@	tests/protocol-logger-test.$(OBJEXT)
@@ -502,7 +495,6 @@
 	tests/$(DEPDIR)/interface-test.Po tests/$(DEPDIR)/list-test.Po \
 	tests/$(DEPDIR)/map-test.Po tests/$(DEPDIR)/message-test.Po \
 	tests/$(DEPDIR)/newsignal-test.Po \
-	tests/$(DEPDIR)/os-wrappers-test.Po \
 	tests/$(DEPDIR)/protocol-logger-test.Po \
 	tests/$(DEPDIR)/proxy-test.Po tests/$(DEPDIR)/queue-test.Po \
 	tests/$(DEPDIR)/resources-test.Po \
@@ -575,7 +567,7 @@
 	$(headers_test_SOURCES) $(nodist_headers_test_SOURCES) \
 	$(interface_test_SOURCES) $(list_test_SOURCES) \
 	$(map_test_SOURCES) $(message_test_SOURCES) \
-	$(newsignal_test_SOURCES) $(os_wrappers_test_SOURCES) \
+	$(newsignal_test_SOURCES) \
 	$(protocol_logger_test_SOURCES) $(proxy_test_SOURCES) \
 	$(queue_test_SOURCES) $(resources_test_SOURCES) \
 	$(sanity_test_SOURCES) $(signal_test_SOURCES) \
@@ -603,7 +595,6 @@
 	$(am__list_test_SOURCES_DIST) $(am__map_test_SOURCES_DIST) \
 	$(am__message_test_SOURCES_DIST) \
 	$(am__newsignal_test_SOURCES_DIST) \
-	$(am__os_wrappers_test_SOURCES_DIST) \
 	$(am__protocol_logger_test_SOURCES_DIST) \
 	$(am__proxy_test_SOURCES_DIST) $(am__queue_test_SOURCES_DIST) \
 	$(am__resources_test_SOURCES_DIST) \
@@ -1182,7 +1173,6 @@
 @ENABLE_LIBRARIES_TRUE@	display-test connection-test \
 @ENABLE_LIBRARIES_TRUE@	event-loop-test fixed-test \
 @ENABLE_LIBRARIES_TRUE@	interface-test list-test map-test \
-@ENABLE_LIBRARIES_TRUE@	os-wrappers-test sanity-test \
 @ENABLE_LIBRARIES_TRUE@	socket-test queue-test proxy-test \
 @ENABLE_LIBRARIES_TRUE@	signal-test newsignal-test \
 @ENABLE_LIBRARIES_TRUE@	resources-test message-test \
@@ -1271,8 +1261,6 @@
 @ENABLE_CPP_TEST_TRUE@@ENABLE_LIBRARIES_TRUE@cpp_compile_test_SOURCES = tests/cpp-compile-test.cpp
 @ENABLE_LIBRARIES_TRUE@fixed_benchmark_SOURCES = tests/fixed-benchmark.c
 @ENABLE_LIBRARIES_TRUE@fixed_benchmark_LDADD = $(RT_LIBS)
-@ENABLE_LIBRARIES_TRUE@os_wrappers_test_SOURCES = tests/os-wrappers-test.c
-@ENABLE_LIBRARIES_TRUE@os_wrappers_test_LDADD = libtest-runner.la
 @ENABLE_LIBRARIES_TRUE@exec_fd_leak_checker_SOURCES = tests/exec-fd-leak-checker.c
 @ENABLE_LIBRARIES_TRUE@exec_fd_leak_checker_LDADD = libtest-helpers.la
 all: $(BUILT_SOURCES) config.h
@@ -1652,14 +1640,6 @@
 newsignal-test$(EXEEXT): $(newsignal_test_OBJECTS) $(newsignal_test_DEPENDENCIES) $(EXTRA_newsignal_test_DEPENDENCIES) 
 	@rm -f newsignal-test$(EXEEXT)
 	$(AM_V_CCLD)$(LINK) $(newsignal_test_OBJECTS) $(newsignal_test_LDADD) $(LIBS)
-tests/os-wrappers-test.$(OBJEXT): tests/$(am__dirstamp) \
-	tests/$(DEPDIR)/$(am__dirstamp)
-
-os-wrappers-test$(EXEEXT): $(os_wrappers_test_OBJECTS) $(os_wrappers_test_DEPENDENCIES) $(EXTRA_os_wrappers_test_DEPENDENCIES) 
-	@rm -f os-wrappers-test$(EXEEXT)
-	$(AM_V_CCLD)$(LINK) $(os_wrappers_test_OBJECTS) $(os_wrappers_test_LDADD) $(LIBS)
-tests/protocol-logger-test.$(OBJEXT): tests/$(am__dirstamp) \
-	tests/$(DEPDIR)/$(am__dirstamp)
 
 protocol-logger-test$(EXEEXT): $(protocol_logger_test_OBJECTS) $(protocol_logger_test_DEPENDENCIES) $(EXTRA_protocol_logger_test_DEPENDENCIES) 
 	@rm -f protocol-logger-test$(EXEEXT)
@@ -1767,7 +1747,6 @@
 @AMDEP_TRUE@@am__include@ @am__quote@tests/$(DEPDIR)/map-test.Po@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@tests/$(DEPDIR)/message-test.Po@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@tests/$(DEPDIR)/newsignal-test.Po@am__quote@ # am--include-marker
-@AMDEP_TRUE@@am__include@ @am__quote@tests/$(DEPDIR)/os-wrappers-test.Po@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@tests/$(DEPDIR)/protocol-logger-test.Po@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@tests/$(DEPDIR)/proxy-test.Po@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@tests/$(DEPDIR)/queue-test.Po@am__quote@ # am--include-marker
@@ -2426,13 +2405,6 @@
 	--log-file $$b.log --trs-file $$b.trs \
 	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
 	"$$tst" $(AM_TESTS_FD_REDIRECT)
-os-wrappers-test.log: os-wrappers-test$(EXEEXT)
-	@p='os-wrappers-test$(EXEEXT)'; \
-	b='os-wrappers-test'; \
-	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
-	--log-file $$b.log --trs-file $$b.trs \
-	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
-	"$$tst" $(AM_TESTS_FD_REDIRECT)
 sanity-test.log: sanity-test$(EXEEXT)
 	@p='sanity-test$(EXEEXT)'; \
 	b='sanity-test'; \
@@ -2849,7 +2821,6 @@
 	-rm -f tests/$(DEPDIR)/map-test.Po
 	-rm -f tests/$(DEPDIR)/message-test.Po
 	-rm -f tests/$(DEPDIR)/newsignal-test.Po
-	-rm -f tests/$(DEPDIR)/os-wrappers-test.Po
 	-rm -f tests/$(DEPDIR)/protocol-logger-test.Po
 	-rm -f tests/$(DEPDIR)/proxy-test.Po
 	-rm -f tests/$(DEPDIR)/queue-test.Po
@@ -2945,7 +2916,6 @@
 	-rm -f tests/$(DEPDIR)/map-test.Po
 	-rm -f tests/$(DEPDIR)/message-test.Po
 	-rm -f tests/$(DEPDIR)/newsignal-test.Po
-	-rm -f tests/$(DEPDIR)/os-wrappers-test.Po
 	-rm -f tests/$(DEPDIR)/protocol-logger-test.Po
 	-rm -f tests/$(DEPDIR)/proxy-test.Po
 	-rm -f tests/$(DEPDIR)/queue-test.Po