Initial work for default update outer operation

While update still uses the old "all update rules update all their
prerequisites" assumption, test and install have been fixed not to
rely on this.

1 files changed, 31 insertions, 2 deletions

diff --git a/build2/cc/link-rule.cxx b/build2/cc/link-rule.cxx
index d06a835..b6b707d 100644
--- a/build2/cc/link-rule.cxx
+++ b/build2/cc/link-rule.cxx
@@ -56,6 +56,8 @@ namespace build2
       //
       if (lt.library ())
       {
+        //@@ inner/outer race (see install-rule)?
+
         if (t.group == nullptr)
           t.group = &search (t,
                              lt.utility ? libu::static_type : lib::static_type,
@@ -621,7 +623,22 @@ namespace build2
           //
           if      (p.is_a<obj> ()) pt = &search (t, tt.obj, p.key ());
           else if (p.is_a<bmi> ()) pt = &search (t, tt.bmi, p.key ());
-          else                     pt = &p.search (t);
+          //
+          // Something else. This could be something unrelated that the user
+          // tacked on (e.g., a doc{}). Or it could be some ad hoc input to
+          // the linker (say a linker script or some such).
+          //
+          else
+          {
+            // @@ Temporary hack until we get the default outer operation for
+            // update. This allows operations like test and install to skip
+            // such tacked on stuff.
+            //
+            if (current_outer_oif != nullptr)
+              continue;
+
+            pt = &p.search (t);
+          }
 
           if (skip (pt))
             continue;
@@ -676,7 +693,7 @@ namespace build2
           // If this obj*{} already has prerequisites, then verify they are
           // "compatible" with what we are doing here. Otherwise, synthesize
           // the dependency. Note that we may also end up synthesizing with
-          // someone beating up to it. In this case also verify.
+          // someone beating us to it. In this case also verify.
           //
           bool verify (true);
 
@@ -709,6 +726,9 @@ namespace build2
             {
               const target* pt (pts[j++]);
 
+              if (pt == nullptr)
+                continue;
+
               if (p.is_a<libx> () ||
                   p.is_a<liba> () || p.is_a<libs> () || p.is_a<libux> () ||
                   p.is_a<bmi> ()  || p.is_a (tt.bmi))
@@ -1155,6 +1175,9 @@ namespace build2
 
       for (const prerequisite_target& pt: t.prerequisite_targets[a])
       {
+        if (pt == nullptr)
+          continue;
+
         bool la;
         const file* f;
 
@@ -1525,6 +1548,9 @@ namespace build2
         {
           const target* pt (p.target);
 
+          if (pt == nullptr)
+            continue;
+
           // If this is bmi*{}, then obj*{} is its ad hoc member.
           //
           if (modules)
@@ -1810,6 +1836,9 @@ namespace build2
       {
         const target* pt (p.target);
 
+        if (pt == nullptr)
+          continue;
+
         if (modules)
         {
           if (pt->is_a<bmie> () || pt->is_a<bmia> () || pt->is_a<bmis> ())