--- CMakeLists.txt.orig	2021-04-23 14:06:10 UTC
+++ CMakeLists.txt
@@ -356,6 +356,7 @@ endif(WITH_HELP)
 # ******************************
 
 set(CMAKE_REQUIRED_LIBRARIES "-liconv")
+set(CMAKE_REQUIRED_FLAGS "-L/usr/local/lib")
 CHECK_C_SOURCE_COMPILES("#include <iconv.h>
 			#include <stdlib.h>
 			int main(void) { iconv_t cd; cd = iconv_open (\"UTF-8\", \"ISO-8859-1\"); return 0; }" HAVE_LIBICONV)
