From: Roy Marples <roy@marples.name>
Date: Tue, 5 Nov 2019 16:23:02 +0000 (+0000)
Subject: build: Improve detection of dlopen(3) in libdl
X-Git-Tag: v8.1.2~17
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f8d107d75d9b811f237266665685c5942a848ef8;p=thirdparty%2Fdhcpcd.git

build: Improve detection of dlopen(3) in libdl
---

diff --git a/configure b/configure
index 29ecaa76..9efa1638 100755
--- a/configure
+++ b/configure
@@ -1506,7 +1506,10 @@ if [ "$DEV" = yes ]; then
 #include <dlfcn.h>
 #include <stdlib.h>
 int main(void) {
-	dlopen(NULL, 0);
+	void *h = dlopen("/foo/bar", 0);
+	void (*s)(char *) = dlsym(h, "deadbeef");
+	s(dlerror());
+	dlclose(h);
 	return 0;
 }
 EOF