address issue#26

try to link with libcharset when locale_charset() is not present in
libiconv

Makefile.am

@@ -23,7 +23,7 @@ fdkaac_SOURCES = \
 dist_man_MANS = man/fdkaac.1
 
 fdkaac_LDADD = \
-    @LIBICONV@ -lfdk-aac -lm
+    @LIBICONV@ @CHARSET_LIB@ -lfdk-aac -lm
 
 if FDK_PLATFORM_POSIX
     fdkaac_SOURCES += \

configure.ac

@@ -13,7 +13,7 @@ AC_PROG_CC
 AM_PROG_CC_C_O
 
 AC_CHECK_HEADERS([sys/time.h])
-AC_CHECK_HEADERS([localcharset.h langinfo.h endian.h byteswap.h])
+AC_CHECK_HEADERS([libcharset.h langinfo.h endian.h byteswap.h])
 AC_CHECK_HEADERS([fdk-aac/aacenc_lib.h], ,
                  AC_MSG_ERROR([libfdk-aac is required]))
 
@@ -38,6 +38,12 @@ AC_CHECK_FUNC(getopt_long)
 AM_CONDITIONAL([FDK_NO_GETOPT_LONG],[test "$ac_cv_func_getopt_long" != "yes"])
 AC_SEARCH_LIBS([aacEncOpen],[fdk-aac],[],[],[])
 
+CHARSET_LIB=
+AC_CHECK_LIB([iconv], [locale_charset],
+       [CHARSET_LIB=-liconv],
+       [AC_CHECK_LIB([charset], [locale_charset], [CHARSET_LIB=-lcharset])])
+AC_SUBST([CHARSET_LIB])
+
 AC_CANONICAL_HOST
 
 X_PLATFORM=posix

src/compat_posix.c

@@ -59,8 +59,8 @@ char *aacenc_to_utf8(const char *s)
 #include <errno.h>
 #include <iconv.h>
 
-#if HAVE_LOCALCHARSET_H
-#include <localcharset.h>
+#if HAVE_LIBCHARSET_H
+#include <libcharset.h>
 #elif HAVE_LANGINFO_H
 #include <langinfo.h>
 static const char *locale_charset(void)