Some more autotools fixes/hacks/workarounds

autogen.sh:
Detect more strange paths for aclocal on different
packaging systems.  This should help encourage more
people to run svn code on their systems.

configure.ac:
Tested on FreeBSD (6.1).  Darwin, OpenBSD, NetBSD info
gleaned off the Makefile distributed with git.

m4/shout.m4:
The Shout 2.2 port on a FreeBSD 6.1 machine seemed
problematic when it's compiled against pthreads, so this is
a gross hack to force -lpthread on it

git-svn-id: https://svn.musicpd.org/mpd/trunk@4390 09075e82-0dd4-0310-85a5-a0d7c8717e4f

autogen.sh

@@ -124,13 +124,23 @@ fi
 echo "Generating configuration files for $package, please wait...."
 
 ACLOCAL_FLAGS="$ACLOCAL_FLAGS -I $PWD/m4"
-if [ -d /usr/local/share/aclocal ]; then
-	ACLOCAL_FLAGS="$ACLOCAL_FLAGS -I /usr/local/share/aclocal"
-fi
 
-# if [ -d "/usr/local/share/`basename $ACLOCAL`" ]; then
-	# ACLOCAL_FLAGS="$ACLOCAL_FLAGS -I /usr/local/share/`basename $ACLOCAL`"
-# fi
+# /usr/share/aclocal is most likely included by default, already...
+ac_local_paths='
+/usr/local/share/aclocal
+/sw/share/aclocal
+/usr/pkg/share/aclocal
+/opt/share/aclocal
+/usr/gnu/share/aclocal
+'
+
+for i in $ac_local_paths; do
+	if test -d "$i"; then
+		ACLOCAL_FLAGS="$ACLOCAL_FLAGS -I $i"
+		# we probably only want one of these...
+		break
+	fi
+done
 
 echo "  $ACLOCAL $ACLOCAL_FLAGS"
 $ACLOCAL $ACLOCAL_FLAGS

configure.ac

@@ -25,13 +25,41 @@ AC_PROG_MAKE_SET
 
 AM_CONFIG_HEADER(config.h)
 
+MPD_LIBS=""
 MPD_CFLAGS=""
 case "$CC" in
 *gcc*)
 	MPD_CFLAGS="-Wall"
 	;;
 esac
-MPD_LIBS=""
+
+local_lib=
+local_include=
+
+# aren't autotools supposed to be smart enough to figure this out?
+# oh well, the git-core Makefile managed to do some of the work for us :)
+case "$host_os" in
+darwin*)
+	local_lib='/sw/lib /opt/local/lib'
+	local_include='/sw/include /opt/local/include'
+	;;
+freebsd* | openbsd*)
+	local_lib=/usr/local/lib
+	local_include=/usr/local/include
+	;;
+netbsd*)
+	local_lib=/usr/pkg/lib
+	local_include=/usr/pkg/include
+	LDFLAGS="$LDFLAGS -Wl,-rpath,/usr/pkg/lib"
+	;;
+esac
+
+for d in $local_lib; do
+	test -d "$d" && LDFLAGS="$LDFLAGS -L$d"
+done
+for d in $local_include; do
+	test -d "$d" && CFLAGS="$CFLAGS -I$d"
+done
 
 AC_ARG_ENABLE(ao,[  --enable-ao    enable support for libao (default: disable)],[enable_ao=$enableval],[enable_ao=no])
 AC_ARG_ENABLE(shout,[  --disable-shout    disable support for streaming through shout (default: enable)],[enable_shout=$enableval],[enable_shout=yes])

m4/shout.m4

@@ -53,6 +53,17 @@ then
   ac_save_CPPFLAGS="$CPPFLAGS"
   ac_save_CFLAGS="$CFLAGS"
   ac_save_LIBS="$LIBS"
+
+  # freebsd 6.1 + shout 2.2 port seems to leave pthread out
+  case "$host_os" in
+  freebsd*)
+	case "$SHOUT_CFLAGS$SHOUT_CPPFLAGS" in
+	*-D_THREAD_SAFE*)
+		SHOUT_LIBS="$SHOUT_LIBS -lpthread"
+		;;
+	esac
+	;;
+  esac
   CPPFLAGS="$CPPFLAGS $SHOUT_CPPFLAGS"
   CFLAGS="$CFLAGS $SHOUT_CFLAGS"
   LIBS="$SHOUT_LIBS $LIBS"