$NetBSD$

Don't require libiconv to be a separate library.
(Its in libc in netbsd)

--- src/platform/cmake/CMakeLists.BSD.orig	2018-12-10 23:33:36.000000000 +0000
+++ src/platform/cmake/CMakeLists.BSD
@@ -48,7 +48,7 @@ list(APPEND ARCAN_PLATFORM
 set(LWA_PLATFORM ${ARCAN_PLATFORM})
 
 # then the variant specific changes
-if (${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD")
+if (${CMAKE_SYSTEM_NAME} MATCHES "(OpenBSD|NetBSD)")
 # force these options here for now
 	set(ENABLE_LWA OFF)
 
@@ -100,8 +100,10 @@ add_definitions(
 	${BSD_VARIANT_DEFINITIONS}
 )
 
-find_library(ICONV NAMES iconv REQUIRED)
-LIST(APPEND ARCAN_LIBRARIES ${ICONV})
+find_library(ICONV NAMES iconv)
+if(ICONV)
+	LIST(APPEND ARCAN_LIBRARIES ${ICONV})
+endif()
 
 set_property(SOURCE platform/posix/fdpassing.c
 	APPEND PROPERTY COMPILE_FLAGS -w)