[gcompris] remove external gnuchess dependency.

[Bruno Coudoin <bcoudoin src gnome org>]

commit b851491aa25ad63c35f6463975822de6f936ef29
Author: Bruno Coudoin <bruno coudoin free fr>
Date:   Mon Dec 3 00:32:07 2012 +0100

    remove external gnuchess dependency.
    
    We already have our own version of GnuChess that we know works
    fine with us.
    
    Recently GNU/Linux distribution's own version of GnuChess no more
    work with us. I am bored having to fix this years after years.
    
    This patch removes the ability to compile GCompris with an external
    GnuChess. Now we always compile and ship our own.

 configure.ac                            |   21 +--------------------
 src/chess_computer-activity/Makefile.am |    4 ----
 2 files changed, 1 insertions(+), 24 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index bda3e8e..40325ef 100644
--- a/configure.ac
+++ b/configure.ac
@@ -216,13 +216,6 @@ AC_ARG_ENABLE(disable-activation-code,
           [For Windows or MacOSX version, disable the activation code]),
           disable_activation_code="$enableval", disable_activation_code="no")
 
-dnl internal GnuChess
-AC_ARG_ENABLE(build-gnuchess,
-          AC_HELP_STRING(
-          [--enable-build-gnuchess],
-          [For Gnu/Linux, compile our version of GnuChess]),
-          build_gnuchess="$enableval", build_gnuchess="no")
-
 dnl WIN32 Specifics
 AC_MSG_CHECKING([for Win32 platform in general])
 case "$host" in
@@ -307,7 +300,6 @@ if test "x$platform_win32" = "xyes" ; then
 
   dnl Test for gnuchess
   AC_DEFINE_UNQUOTED(GNUCHESS, "gnuchess.exe", Defines where GNU Chess resides on the system)
-  build_gnuchess=yes
 
   if test x$disable_activation_code = xno; then
     AC_DEFINE([ACTIVATION_CODE], 1,[Activation code is enabled])
@@ -338,7 +330,6 @@ elif test "x$nsbundle" = "xyes" ; then
 
   dnl Test for gnuchess
   AC_DEFINE_UNQUOTED(GNUCHESS, "../Resources/bin/gcompris-gnuchess", Defines where GNU Chess resides on the system)
-  build_gnuchess=yes
 
   if test x$disable_activation_code = xno; then
     AC_DEFINE([ACTIVATION_CODE], 1,[Activation code is enabled])
@@ -366,19 +357,11 @@ else
   AC_DEFINE_UNQUOTED(SYSTEM_CONFIG_DIR, "/etc", [System GCompris config directory])
 
   dnl Test for gnuchess
-  if test x$build_gnuchess = xno; then
-    AC_PATH_PROGS(GNUCHESS, gnuchess gnome-gnuchess, no, [/usr/bin:/usr/games:/usr/local/bin:$PATH])
-  else
-    GNUCHESS="gcompris-gnuchess"
-  fi
-
   if test x$GNUCHESS = xno; then
-    AC_MSG_ERROR([Couldn't find gnuchess, please install the gnuchess package version]
-		 [ 5 or above or define the environment variable GNUCHESS.])
+    GNUCHESS="gcompris-gnuchess"
   fi
   AC_DEFINE_UNQUOTED(GNUCHESS, "$GNUCHESS", Defines where GNU Chess resides on the system)
 fi
-AM_CONDITIONAL(BUILD_GNUCHESS, test x$build_gnuchess != xno)
 
 AC_PATH_PROG(TEXINFO, makeinfo,no)
 if test x$TEXINFO = xno; then
@@ -928,8 +911,6 @@ echo "Python plugin                            = $build_python_plugin"
 
 echo "SQLITE database (--enable-sqlite)        = $with_sqlite (profiles depend on this)"
 
-echo "Internal GnuChess                        = $build_gnuchess (--enable-build-gnuchess)"
-
 echo "Sugar DE Support                         = $with_sugar"
 echo "BINRELOC (--enable-binreloc)             = $br_cv_binreloc"
 echo "NSBundle (--enable-nsbundle)             = $nsbundle"
diff --git a/src/chess_computer-activity/Makefile.am b/src/chess_computer-activity/Makefile.am
index 05b5a81..868d325 100644
--- a/src/chess_computer-activity/Makefile.am
+++ b/src/chess_computer-activity/Makefile.am
@@ -1,10 +1,6 @@
 include $(top_srcdir)/Makefile.activity
 
-if BUILD_GNUCHESS
 SUBDIRS = resources gnuchess
-else
-SUBDIRS = resources
-endif
 
 if PLATFORM_WIN32
 shared = -shared