diff --git a/libpkgconf/bsdstubs.h b/libpkgconf/bsdstubs.h
index 2e0fb5c..8f37b70 100644
--- a/libpkgconf/bsdstubs.h
+++ b/libpkgconf/bsdstubs.h
@@ -18,8 +18,16 @@
 
 #include <libpkgconf/libpkgconf-api.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 PKGCONF_API extern size_t pkgconf_strlcpy(char *dst, const char *src, size_t siz);
 PKGCONF_API extern size_t pkgconf_strlcat(char *dst, const char *src, size_t siz);
 PKGCONF_API extern char *pkgconf_strndup(const char *src, size_t len);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif
diff --git a/libpkgconf/iter.h b/libpkgconf/iter.h
index 59cfac3..d90b402 100644
--- a/libpkgconf/iter.h
+++ b/libpkgconf/iter.h
@@ -16,6 +16,10 @@
 #ifndef PKGCONF__ITER_H
 #define PKGCONF__ITER_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct pkgconf_node_ pkgconf_node_t;
 
 struct pkgconf_node_ {
@@ -94,4 +98,8 @@ pkgconf_node_delete(pkgconf_node_t *node, pkgconf_list_t *list)
 		node->next->prev = node->prev;
 }
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif
diff --git a/libpkgconf/libpkgconf.h b/libpkgconf/libpkgconf.h
index 1a3ca8c..4c2a53b 100644
--- a/libpkgconf/libpkgconf.h
+++ b/libpkgconf/libpkgconf.h
@@ -21,6 +21,10 @@
 #include <libpkgconf/bsdstubs.h>
 #include <libpkgconf/libpkgconf-api.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* pkg-config uses ';' on win32 as ':' is part of path */
 #ifdef _WIN32
 #define PKG_CONFIG_PATH_SEP_S   ";"
@@ -317,4 +321,8 @@ PKGCONF_API bool pkgconf_path_match_list(const char *path, const pkgconf_list_t
 PKGCONF_API void pkgconf_path_free(pkgconf_list_t *dirlist);
 PKGCONF_API bool pkgconf_path_relocate(char *buf, size_t buflen);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif