Skip sodium_utils{2,3} tests when the target is Javascript

configure.ac

@@ -432,6 +432,7 @@ AS_IF([test "x$EMSCRIPTEN" != "x"],[
   TEST_LDFLAGS='--pre-js pre.js.inc'
 ])
 AC_SUBST(TEST_LDFLAGS)
+AM_CONDITIONAL([EMSCRIPTEN], [test "x$EMSCRIPTEN" != "x"])
 
 dnl Libtool.
 

test/default/Makefile.am

@@ -179,8 +179,6 @@ TESTS_TARGETS = \
 	sign \
 	sodium_core \
 	sodium_utils \
-	sodium_utils2 \
-	sodium_utils3 \
 	sodium_version \
 	stream \
 	stream2 \
@@ -188,6 +186,12 @@ TESTS_TARGETS = \
 	stream4 \
 	verify1
 
+if !EMSCRIPTEN
+TESTS_TARGETS += \
+	sodium_utils2 \
+	sodium_utils3
+endif
+
 check_PROGRAMS = $(TESTS_TARGETS)
 
 TESTS = $(TESTS_TARGETS)