lib: Adapt headers for use in C++.

This commit makes several library headers suitable for inclusion in C++.

It adds [extern "C"] guards and makes minor changes to fix casting and
keyword issues.

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/sset.h b/lib/sset.h
index 88100673..a739fce0 100644
--- a/lib/sset.h
+++ b/lib/sset.h
@@ -19,6 +19,10 @@
 
 #include "hmap.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct sset_node {
     struct hmap_node hmap_node;
     char name[1];
@@ -85,4 +89,8 @@ bool sset_equals(const struct sset *, const struct sset *);
     SSET_NAME_FROM_HMAP_NODE(                                           \
         hmap_next(&(SSET)->map, &SSET_NODE_FROM_NAME(NAME)->hmap_node))
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* sset.h */