Minor tweaks

README.md

@@ -139,7 +139,7 @@ The first line in this header file must be in the form:
 ```
 
 If the name is followed by the `!` modifier, then it is *unprefixable* (see
-the previous section for detail). The name can also be followed by `:` and a
+the previous section for details). The name can also be followed by `:` and a
 list of base checks. Such checks are automatically inserted before the rest of
 the lines in the resulting substitution.
 

libbuild2-autoconf-tests/build/root.build

@@ -7,6 +7,10 @@ using autoconf
 
 using c
 
-# @@ Should we be able to do just test = $build.path?
+# Every exe{} in this subproject is by default a test.
 #
-testscript{*}: test = $recall($build.path)
+exe{*}: test = true
+
+# Specify the test target for cross-testing.
+#
+test.target = $c.target

libbuild2-autoconf-tests/module/buildfile

@@ -1 +1,5 @@
+# @@ Should we be able to do just test = $build.path?
+#
+testscript{*}: test = $recall($build.path)
+
 ./: testscript