Don't use PKG_CHECK_MODULES: it aborts configure on systems without pkg-config,

even if action-if-not-found is defined.

Rename have_shout to xt_have_shout, in conformance with macro writing guidelines :)

svn path=/trunk/m4/; revision=5006

m4/shout.m4

@@ -2,45 +2,44 @@ dnl XIPH_PATH_SHOUT
 dnl Jack Moffitt <jack@icecast.org> 08-06-2001
 dnl Rewritten for libshout 2
 dnl Brendan Cully <brendan@xiph.org> 20030612
-dnl
+dnl 
+dnl $Id: shout.m4,v 1.8 2003/06/25 17:03:55 brendan Exp $
+
 # XIPH_PATH_SHOUT([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
 # Test for libshout, and define SHOUT_CFLAGS and SHOUT_LIBS
 AC_DEFUN([XIPH_PATH_SHOUT],
 [dnl
-have_shout="no"
+xt_have_shout="no"
 SHOUT_CFLAGS=""
 SHOUT_LIBS=""
 
+# NB: PKG_CHECK_MODULES exits if pkg-config is unavailable on the targe
+# system, so we can't use it.
+
 # Step 1: Use pkg-config if available
-m4_ifdef([PKG_CHECK_MODULES],
-  [# PKG_CHECK_MODULES available
-  PKG_CHECK_MODULES([SHOUT], [shout])
-  have_shout="maybe"],
-  [# PKG_CHECK_MODULES is unavailable, search for pkg-config program
-  AC_PATH_PROG([PKGCONFIG], [pkg-config], [none])
-  if test "$PKGCONFIG" != "none" && `$PKGCONFIG --exists shout`
+AC_PATH_PROG([PKGCONFIG], [pkg-config], [no])
+if test "$PKGCONFIG" != "no" && `$PKGCONFIG --exists shout`
+then
+  SHOUT_CFLAGS=`$PKGCONFIG --cflags shout`
+  SHOUT_LIBS=`$PKGCONFIG --libs shout`
+  xt_have_shout="maybe"
+else
+  if test "$PKGCONFIG" != "no"
   then
-    SHOUT_CFLAGS=`$PKGCONFIG --cflags shout`
-    SHOUT_LIBS=`$PKGCONFIG --libs shout`
-    have_shout="maybe"
-  else
-    if test "$PKGCONFIG" != "none"
-    then
-      AC_MSG_NOTICE([$PKGCONFIG couldn't find libshout. Try adjusting PKG_CONFIG_PATH.])
-    fi
-    # Step 2: try shout-config
-    AC_PATH_PROG([SHOUTCONFIG], [shout-config], [none])
-    if test "$SHOUTCONFIG" != "none" && test `$SHOUTCONFIG --package` = "libshout"
-    then
-      SHOUT_CFLAGS=`$SHOUTCONFIG --cflags`
-      SHOUT_LIBS=`$SHOUTCONFIG --libs`
-      have_shout="maybe"
-    fi
+    AC_MSG_NOTICE([$PKGCONFIG couldn't find libshout. Try adjusting PKG_CONFIG_PATH.])
   fi
-  ])
+  # pkg-config unavailable, try shout-config
+  AC_PATH_PROG([SHOUTCONFIG], [shout-config], [no])
+  if test "$SHOUTCONFIG" != "no" && test `$SHOUTCONFIG --package` = "libshout"
+  then
+    SHOUT_CFLAGS=`$SHOUTCONFIG --cflags`
+    SHOUT_LIBS=`$SHOUTCONFIG --libs`
+    xt_have_shout="maybe"
+  fi
+fi
 
 # Now try actually using libshout
-if test "$have_shout" != "no"
+if test "$xt_have_shout" != "no"
 then
   ac_save_CFLAGS="$CFLAGS"
   ac_save_LIBS="$LIBS"
@@ -50,14 +49,14 @@ then
     AC_DEFINE([HAVE_SHOUT_SHOUT_H], 1, [Define if you have <shout/shout.h>])
     AC_CHECK_FUNC([shout_new], [
       ifelse([$1], , :, [$1])
-      have_shout="yes"
+      xt_have_shout="yes"
     ])
   ])
   CFLAGS="$ac_save_CFLAGS"
   LIBS="$ac_save_LIBS"
 fi
 
-if test "$have_shout" != "yes"
+if test "$xt_have_shout" != "yes"
 then
   ifelse([$2], , :, [$2])
 fi