Add ability to get absolute library paths from ${c,cxx}.lib_libs()

3 files changed, 18 insertions, 7 deletions

diff --git a/libbuild2/cc/functions.cxx b/libbuild2/cc/functions.cxx
index 78ee212..98f7f97 100644
--- a/libbuild2/cc/functions.cxx
+++ b/libbuild2/cc/functions.cxx
@@ -175,7 +175,9 @@ namespace build2
       //
       // The following flags are supported:
       //
-      // whole - link the specified libraries in the whole archive mode
+      // whole    - link the specified libraries in the whole archive mode
+      //
+      // absolute - return absolute paths to the libraries
       //
       // If the last argument is false, then do not return the specified
       // libraries themselves.
@@ -197,6 +199,7 @@ namespace build2
               action a, const file& l, bool la, linfo li)
           {
             lflags lf (0);
+            bool rel (true);
             if (vs.size () > 2)
             {
               for (const name& f: vs[2].as<names> ())
@@ -205,6 +208,8 @@ namespace build2
 
                 if (s == "whole")
                   lf |= lflag_whole;
+                else if (s == "absolute")
+                  rel = false;
                 else
                   fail << "invalid flag '" << s << "'";
               }
@@ -214,7 +219,7 @@ namespace build2
 
             m.append_libraries (*static_cast<appended_libraries*> (ls), r,
                                 bs,
-                                a, l, la, lf, li, self);
+                                a, l, la, lf, li, self, rel);
           }});
 
       // $<module>.lib_rpaths(<targets>, <otype> [, <link> [, <self>]])
diff --git a/libbuild2/cc/link-rule.cxx b/libbuild2/cc/link-rule.cxx
index 8175489..dea5879 100644
--- a/libbuild2/cc/link-rule.cxx
+++ b/libbuild2/cc/link-rule.cxx
@@ -1492,7 +1492,7 @@ namespace build2
     append_libraries (appended_libraries& ls, strings& args,
                       const scope& bs, action a,
                       const file& l, bool la, lflags lf, linfo li,
-                      bool self) const
+                      bool self, bool rel) const
     {
       struct data
       {
@@ -1501,8 +1501,9 @@ namespace build2
         const file&          l;
         action               a;
         linfo                li;
+        bool                 rel;
         compile_target_types tts;
-      } d {ls, args, l, a, li, compile_types (li.type)};
+      } d {ls, args, l, a, li, rel, compile_types (li.type)};
 
       auto imp = [] (const file&, bool la)
       {
@@ -1637,7 +1638,9 @@ namespace build2
               //
               if (const file* f = pt->is_a<objx> ())
               {
-                string p (relative (f->path ()).string ());
+                const string& p (d.rel
+                                 ? relative (f->path ()).string ()
+                                 : f->path ().string ());
                 if (find (d.args.begin (), d.args.end (), p) == d.args.end ())
                   d.args.push_back (move (p));
               }
@@ -1661,7 +1664,9 @@ namespace build2
                 l = li;
             }
 
-            string p (relative (l->path ()).string ());
+            string p (d.rel
+                      ? relative (l->path ()).string ()
+                      : l->path ().string ());
 
             if (f & lflag_whole)
             {
diff --git a/libbuild2/cc/link-rule.hxx b/libbuild2/cc/link-rule.hxx
index b192914..6d0649c 100644
--- a/libbuild2/cc/link-rule.hxx
+++ b/libbuild2/cc/link-rule.hxx
@@ -111,7 +111,8 @@ namespace build2
       void
       append_libraries (appended_libraries&, strings&,
                         const scope&, action,
-                        const file&, bool, lflags, linfo, bool = true) const;
+                        const file&, bool, lflags, linfo,
+                        bool = true, bool = true) const;
 
       void
       append_libraries (sha256&, bool&, timestamp,