From 2ecb181fe6394450a7a6a0272e98e6f4444e6689 Mon Sep 17 00:00:00 2001
From: William Pitcock <nenolod@dereferenced.org>
Date: Fri, 11 May 2012 20:16:22 -0500
Subject: [PATCH] pkg: add pkg_libs() for calculating the mergemaster set of
 linker flags (issue #11)

---
 pkg.c | 25 +++++++++++++++++++++++++
 pkg.h |  1 +
 2 files changed, 26 insertions(+)

diff --git a/pkg.c b/pkg.c
index afd2a75..2b48f30 100644
--- a/pkg.c
+++ b/pkg.c
@@ -669,3 +669,28 @@ pkg_cflags(pkg_t *root, int maxdepth, unsigned int flags)
 	return head;
 }
 
+static void
+pkg_libs_collect(pkg_t *pkg, void *data, unsigned int flags)
+{
+	pkg_fragment_t **list = data;
+	pkg_fragment_t *frag;
+
+	PKG_FOREACH_LIST_ENTRY(pkg->libs, frag)
+		*list = pkg_fragment_copy(*list, frag);
+
+	if (flags & PKGF_MERGE_PRIVATE_FRAGMENTS)
+	{
+		PKG_FOREACH_LIST_ENTRY(pkg->libs_private, frag)
+			*list = pkg_fragment_copy(*list, frag);
+	}
+}
+
+pkg_fragment_t *
+pkg_libs(pkg_t *root, int maxdepth, unsigned int flags)
+{
+	pkg_fragment_t *head = NULL;
+
+	pkg_traverse(root, pkg_libs_collect, &head, maxdepth, flags);
+
+	return head;
+}
diff --git a/pkg.h b/pkg.h
index 820dc36..ce228c5 100644
--- a/pkg.h
+++ b/pkg.h
@@ -133,6 +133,7 @@ int pkg_compare_version(const char *a, const char *b);
 pkg_t *pkg_verify_dependency(pkg_dependency_t *pkgdep, unsigned int flags, unsigned int *eflags);
 const char *pkg_get_comparator(pkg_dependency_t *pkgdep);
 pkg_fragment_t *pkg_cflags(pkg_t *root, int maxdepth, unsigned int flags);
+pkg_fragment_t *pkg_libs(pkg_t *root, int maxdepth, unsigned int flags);
 
 /* parse.c */
 pkg_t *pkg_new_from_file(const char *path, FILE *f);