glib is being overzealous about trying to detect situations where you use headers from one version of iconv with libraries from another. The libiconv that comes with OS X is actually GNU libiconv, but symbols have standard name like iconv_open instead of libiconv_open, and glib gets a bit confused.

This patch solves the problem by disabling glib's faulty check. You may want to conditionalize this on DARWIN, though.


diff --git a/glib/gconvert.c b/glib/gconvert.c
index b363bca..9924c6c 100644
--- a/glib/gconvert.c
+++ b/glib/gconvert.c
@@ -62,7 +62,6 @@
 #error GNU libiconv in use but included iconv.h not from libiconv
 #endif
 #if !defined(USE_LIBICONV_GNU) && defined (_LIBICONV_H)
-#error GNU libiconv not in use but included iconv.h is from libiconv
 #endif