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-rw-r--r--libbuild2/cc/pkgconfig.cxx30
1 files changed, 24 insertions, 6 deletions
diff --git a/libbuild2/cc/pkgconfig.cxx b/libbuild2/cc/pkgconfig.cxx
index 6c0f1fc..75c7227 100644
--- a/libbuild2/cc/pkgconfig.cxx
+++ b/libbuild2/cc/pkgconfig.cxx
@@ -811,11 +811,17 @@ namespace build2
// @@ If by some reason this is the library itself (doesn't go
// first or libpkgconf parsed libs in some bizarre way) we will
- // hang trying to lock it's target inside search_library() (or
- // fail an assertion if run serially) as by now it is already
- // locked. To be safe we probably shouldn't rely on the position
- // and filter out all occurrences of the library itself (by
- // name?) and complain if none were encountered.
+ // have a dependency cycle by trying to lock its target inside
+ // search_library() as by now it is already locked. To be safe
+ // we probably shouldn't rely on the position and filter out
+ // all occurrences of the library itself (by name?) and
+ // complain if none were encountered.
+ //
+ // Note also that the same situation can occur if we have a
+ // binful library for which we could not find the library
+ // binary and are treating it as binless. We now have a diag
+ // frame around the call to search_library() to help diagnose
+ // such situations.
//
libs.push_back (name (move (o)));
continue;
@@ -1002,7 +1008,19 @@ namespace build2
prerequisite_key pk {
nullopt, {&lib::static_type, &out, &out, &nm, nullopt}, &s};
- if (const target* lt = search_library (a, top_sysd, usrd, pk))
+ const target* lt;
+ {
+ auto df = make_diag_frame (
+ [&pc, &l](const diag_record& dr)
+ {
+ location f (pc.path);
+ dr << info (f) << "while resolving pkg-config dependency " << l;
+ });
+
+ lt = search_library (a, top_sysd, usrd, pk);
+ }
+
+ if (lt != nullptr)
{
// We used to pick a member but that doesn't seem right since the
// same target could be used with different link orders.