build: Ensure a minimal version of libtool

hebasto · hebasto · commit 6ca01b9a104e · 2019-10-06T15:17:29.000+03:00
diff --git a/configure.ac b/configure.ac
@@ -76,6 +76,10 @@ fi
 AC_PROG_OBJCXX
 ])
 
+dnl Since libtool 1.5.2 (released 2004-01-25), on Linux libtool no longer
+dnl sets RPATH for any directories in the dynamic linker search path.
+dnl See more: https://wiki.debian.org/RpathIssue
+LT_PREREQ([1.5.2])
 dnl Libtool init checks.
 LT_INIT([pic-only])
 
