Rework scoping logic

Now the src directory is entered into the scope map and points to
the same scope as out. This means that targets that are in src,
not out (e.g., source files) will "see" rules, variables, etc.
This becomes important when we try, for example, to install a
source file (say, a header) from src: we need the rule as well
as the install.* variables.

5 files changed, 59 insertions, 0 deletions

diff --git a/tests/scope/amalgamation/build/bootstrap.build b/tests/scope/amalgamation/build/bootstrap.build
new file mode 100644
index 0000000..ee73365
--- /dev/null
+++ b/tests/scope/amalgamation/build/bootstrap.build
@@ -0,0 +1,3 @@
+project = scope-amalgamation
+amalgamation = # Disabled.
+using config
diff --git a/tests/scope/amalgamation/buildfile b/tests/scope/amalgamation/buildfile
new file mode 100644
index 0000000..9f80de9
--- /dev/null
+++ b/tests/scope/amalgamation/buildfile
@@ -0,0 +1 @@
+./:
diff --git a/tests/scope/amalgamation/l1/build/bootstrap.build b/tests/scope/amalgamation/l1/build/bootstrap.build
new file mode 100644
index 0000000..6bde838
--- /dev/null
+++ b/tests/scope/amalgamation/l1/build/bootstrap.build
@@ -0,0 +1,16 @@
+project = scope-amalgamation-l1
+using config
+
+# At this stage we don't know ../ is a project. This
+# tests an out-of-project scope that will later be
+# replaced with an in-project scope. Note that the
+# replacement will only occur if src_root != out_root.
+# If they are the same, then this scope will simply
+# be "upgraded".
+#
+$src_root/../:
+{
+  print 0: $project
+  print 0: $src_base
+  print 0: $out_base
+}
diff --git a/tests/scope/amalgamation/l1/buildfile b/tests/scope/amalgamation/l1/buildfile
new file mode 100644
index 0000000..55d8c64
--- /dev/null
+++ b/tests/scope/amalgamation/l1/buildfile
@@ -0,0 +1,37 @@
+# Out of amalgamation.
+#
+../../:
+{
+  print -1: $project
+  print -1: $src_base
+  print -1: $out_base
+}
+
+# In amalgamation.
+#
+../s/:
+{
+  print 0: $project
+  print 0: $src_base
+  print 0: $out_base
+}
+
+# In project.
+#
+s/:
+{
+  print 1: $project
+  print 1: $src_base
+  print 1: $out_base
+}
+
+# In sub-project.
+#
+l2/s/:
+{
+  print 2: $project
+  print 2: $src_base
+  print 2: $out_base
+}
+
+./:
diff --git a/tests/scope/amalgamation/l1/l2/build/bootstrap.build b/tests/scope/amalgamation/l1/l2/build/bootstrap.build
new file mode 100644
index 0000000..0262763
--- /dev/null
+++ b/tests/scope/amalgamation/l1/l2/build/bootstrap.build
@@ -0,0 +1,2 @@
+project = scope-amalgamation-l2
+using config