Not all versions of gnu-linux use glibc, which contains iconv. Some (especially embedded systems) don't have iconv at all.

(closes issue #15169)
 Reported by: pprindeville


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@214152 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configure.ac

@@ -800,11 +800,9 @@ if test "${USE_GSM}" != "no"; then
    fi
 fi
 
-if test "${host_os}" != "linux-gnu" ; then
-  AST_EXT_LIB_CHECK([ICONV], [iconv], [iconv_open], [iconv.h])
-else
-  PBX_ICONV=1
-fi
+AST_EXT_LIB_CHECK([ICONV], [iconv], [iconv_open], [iconv.h])
+# Some versions of Linux package iconv in glibc
+AST_EXT_LIB_CHECK([ICONV], [c], [iconv_close], [iconv.h])
 
 AST_EXT_LIB_CHECK([ICAL], [ical], [icaltimezone_new], [libical/ical.h], [-lpthread])
 

include/asterisk/autoconfig.h.in

@@ -1292,6 +1292,9 @@
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
+/* Define to 1 if the C compiler supports function prototypes. */
+#undef PROTOTYPES
+
 /* Define to necessary symbol if this constant uses a non-standard name on
    your system. */
 #undef PTHREAD_CREATE_JOINABLE
@@ -1308,6 +1311,11 @@
 /* Define to the type of arg 5 for `select'. */
 #undef SELECT_TYPE_ARG5
 
+/* Define to 1 if the `setvbuf' function takes the buffering type as its
+   second argument and the buffer pointer as the third, as on System V before
+   release 3. */
+#undef SETVBUF_REVERSED
+
 /* The size of `int', as computed by sizeof. */
 #undef SIZEOF_INT
 
@@ -1328,30 +1336,20 @@
 /* Define to 1 if your <sys/time.h> declares `struct tm'. */
 #undef TM_IN_SYS_TIME
 
-/* Enable extensions on AIX 3, Interix.  */
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
 #ifndef _ALL_SOURCE
 # undef _ALL_SOURCE
 #endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
 /* Enable GNU extensions on systems that have them.  */
 #ifndef _GNU_SOURCE
 # undef _GNU_SOURCE
 #endif
-/* Enable threading extensions on Solaris.  */
-#ifndef _POSIX_PTHREAD_SEMANTICS
-# undef _POSIX_PTHREAD_SEMANTICS
-#endif
-/* Enable extensions on HP NonStop.  */
-#ifndef _TANDEM_SOURCE
-# undef _TANDEM_SOURCE
-#endif
-/* Enable general extensions on Solaris.  */
-#ifndef __EXTENSIONS__
-# undef __EXTENSIONS__
-#endif
-
-
-/* Number of bits in a file offset, on hosts where this is settable. */
-#undef _FILE_OFFSET_BITS
 
 /* Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2). */
 #undef _LARGEFILE_SOURCE
@@ -1369,6 +1367,20 @@
 /* Define to 1 if you need to in order for `stat' and other things to work. */
 #undef _POSIX_SOURCE
 
+/* Enable extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+
+/* Define like PROTOTYPES; this can be used by system headers. */
+#undef __PROTOTYPES
+
 /* Define to empty if `const' does not conform to ANSI C. */
 #undef const