When using libtool, use LTLIBICONV instead.

* This is required, as otherwise -Wl,--as-needed could fail.
Signed-off-by: Erik de Castro Lopo <erikd@mega-nerd.com>

src/flac/Makefile.am

@@ -60,7 +60,7 @@ flac_LDADD = \
 	$(top_builddir)/src/share/replaygain_synthesis/libreplaygain_synthesis.la \
 	$(top_builddir)/src/libFLAC/libFLAC.la \
 	$(win_utf8_lib) \
-	@LIBICONV@ \
+	@LTLIBICONV@ \
 	-lm
 
 CLEANFILES = flac.exe

src/metaflac/Makefile.am

@@ -55,6 +55,6 @@ metaflac_LDADD = \
 	$(top_builddir)/src/share/utf8/libutf8.la \
 	$(top_builddir)/src/libFLAC/libFLAC.la \
 	$(win_utf8_lib) \
-	@LIBICONV@
+	@LTLIBICONV@
 
 CLEANFILES = metaflac.exe