configure.ac: reject libmpcdec SV7 in configure script

Look for symbol "mpc_demux_init" which does not exist in SV7. This avoids build failures when SV7 was found by configure.ac.

configure.ac: reject libmpcdec SV7 in configure script
7faeb2ff · Max Kellermann · fdd76b34 · 7faeb2ff · 7faeb2ff
Commit 7faeb2ff authored Jan 11, 2014 by Max Kellermann
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NEWS NEWS +1 -0

configure.ac configure.ac +1 -1

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--- a/NEWS
+++ b/NEWS
@@ -4,6 +4,7 @@ ver 0.18.7 (not yet released)
  - soundcloud: fix build failure with libyajl 2.0.1
 * decoder
  - faad: fix memory leak
+  - mpcdec: reject libmpcdec SV7 in configure script
 * daemon: don't initialize supplementary groups when already running
  as the configured user


--- a/configure.ac
+++ b/configure.ac
@@ -960,7 +960,7 @@ AM_CONDITIONAL(ENABLE_SNDFILE, test x$enable_sndfile = xyes)

 dnl --------------------------------- musepack --------------------------------

-MPD_AUTO_LIB(mpc, MPCDEC, mpcdec, main, [-lmpcdec], [],
+MPD_AUTO_LIB(mpc, MPCDEC, mpcdec, mpc_demux_init, [-lmpcdec], [],
 	[mpcdec], [libmpcdec not found])
 if test x$enable_mpc = xyes; then
 	AC_DEFINE(HAVE_MPCDEC, 1, [Define to use libmpcdec for MPC decoding])