From ff8c7d9b16f65e1a64af0d6c919b51e591ad497d Mon Sep 17 00:00:00 2001
From: Martin Kepplinger <martink@posteo.de>
Date: Fri, 12 May 2017 11:12:39 +0200
Subject: [PATCH] use dlfcn.h dynamic loading function only if libdl is
 available

---
 src/ts_close.c       |  5 ++++-
 src/ts_config.c      |  8 +++++++-
 src/ts_load_module.c | 10 ++++++++++
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/ts_close.c b/src/ts_close.c
index 3632f626..2a51b592 100644
--- a/src/ts_close.c
+++ b/src/ts_close.c
@@ -14,7 +14,9 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
+#ifdef HAVE_LIBDL
 #include <dlfcn.h>
+#endif
 
 #include "tslib-private.h"
 
@@ -35,9 +37,10 @@ int ts_close(struct tsdev *ts)
 			info->ops->fini(info);
 		else
 			free(info);
-
+	#ifdef HAVE_LIBDL
 		if (handle)
 			dlclose(handle);
+	#endif
 
 		info = next;
 	}
diff --git a/src/ts_config.c b/src/ts_config.c
index 8800bf8b..3cb8ba46 100644
--- a/src/ts_config.c
+++ b/src/ts_config.c
@@ -13,10 +13,15 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
+
+#ifdef HAVE_LIBDL
 #include <dlfcn.h>
+#endif
+
 #include <errno.h>
 
 #if !defined(HAVE_STRSEP)
@@ -164,9 +169,10 @@ int ts_reconfig(struct tsdev *ts)
 
 		if (info->ops->fini)
 			info->ops->fini(info);
-
+	#ifdef HAVE_LIBDL
 		if (handle)
 			dlclose(handle);
+	#endif
 
 		info = next;
 	}
diff --git a/src/ts_load_module.c b/src/ts_load_module.c
index 56205bc1..db0053cc 100644
--- a/src/ts_load_module.c
+++ b/src/ts_load_module.c
@@ -14,10 +14,14 @@
 #ifdef HAVE_ALLOCA_H
 #include <alloca.h>
 #endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+
+#ifdef HAVE_LIBDL
 #include <dlfcn.h>
+#endif
 
 #include "tslib-private.h"
 
@@ -138,6 +142,7 @@ static struct tslib_module_info *__ts_load_module_static(struct tsdev *ts,
 
 #define PLUGIN_DIR_LEN 1024
 
+#ifdef HAVE_LIBDL
 static struct tslib_module_info *__ts_load_module_shared(struct tsdev *ts,
 							 const char *module,
 							 const char *params)
@@ -190,6 +195,7 @@ static struct tslib_module_info *__ts_load_module_shared(struct tsdev *ts,
 
 	return info;
 }
+#endif /* HAVE_LIBDL */
 
 static int __ts_load_module(struct tsdev *ts, const char *module,
 			    const char *params, int raw)
@@ -206,8 +212,10 @@ static int __ts_load_module(struct tsdev *ts, const char *module,
 #endif
 
 	info = __ts_load_module_static(ts, module, params);
+#ifdef HAVE_LIBDL
 	if (!info)
 		info = __ts_load_module_shared(ts, module, params);
+#endif
 	if (!info)
 		return -1;
 
@@ -225,8 +233,10 @@ static int __ts_load_module(struct tsdev *ts, const char *module,
 		if (info->ops->fini)
 			info->ops->fini(info);
 
+#ifdef HAVE_LIBDL
 		if (handle)
 			dlclose(handle);
+#endif
 	}
 
 	return ret;