Don't try to install targets from other projects

3 files changed, 28 insertions, 2 deletions

diff --git a/build/cxx/link.cxx b/build/cxx/link.cxx
index 6742ff2..f489a0d 100644
--- a/build/cxx/link.cxx
+++ b/build/cxx/link.cxx
@@ -405,9 +405,10 @@ namespace build
 
       // If we have any prerequisite libraries (which also means that
       // we match), search/import and pre-match them to implement the
-      // "library meta-information protocol".
+      // "library meta-information protocol". Don't do this if we are
+      // called from the install rule just to check if we would match.
       //
-      if (seen_lib && lt != type::e)
+      if (seen_lib && lt != type::e && a.operation () != install_id)
       {
         if (t.group != nullptr)
           t.group->prerequisite_targets.clear (); // lib{}'s
diff --git a/build/install/rule.cxx b/build/install/rule.cxx
index 6f0f95f..bd538ed 100644
--- a/build/install/rule.cxx
+++ b/build/install/rule.cxx
@@ -121,8 +121,16 @@ namespace build
       // run standard search_and_match()? Will need an indicator
       // that it was forced (e.g., [install]) for filter() below.
       //
+      scope& rs (t.root_scope ());
+
       for (prerequisite_member p: group_prerequisite_members (a, t))
       {
+        // Ignore unresolved targets that are imported from other projects.
+        // We are definitely not installing those.
+        //
+        if (p.proj () != nullptr)
+          continue;
+
         // @@ This is where we will handle [noinstall].
         //
 
@@ -134,6 +142,12 @@ namespace build
           continue;
 
         target& pt (p.search ());
+
+        // Ignore targets that are outside of our project.
+        //
+        if (!pt.in (rs))
+          continue;
+
         build::match (a, pt);
 
         // If the matched rule returned noop_recipe, then the target
diff --git a/build/target b/build/target
index d4a4bef..a866c98 100644
--- a/build/target
+++ b/build/target
@@ -205,6 +205,8 @@ namespace build
     target_key
     key () const {return target_key {&type (), &dir, &name, &ext};}
 
+    // Scoping.
+    //
    public:
     // Most qualified scope that contains this target.
     //
@@ -225,6 +227,15 @@ namespace build
     scope&
     strong_scope () const {return *root_scope ().strong_scope ();}
 
+
+    bool
+    in (const scope& s) const
+    {
+      return
+        (s.out_path_ != nullptr && dir.sub (*s.out_path_)) ||
+        (s.src_path_ != nullptr && dir.sub (*s.src_path_));
+    }
+
     // Prerequisites.
     //
   public: