http://ftp.x.org/contrib/applications/xscreensaver-3.10.tar.gz

[xscreensaver] / configure.in

diff --git a/configure.in b/configure.in
index df6f23e67cbde728a45f12e8689963d9e7b87966..75a8fe321785428a76d7c25d05815aee43202f25 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -159,7 +159,7 @@ Installation options:
   --enable-subdir=DIR     Put the demo programs in a subdirectory of \`bindir',
                           instead of putting them in bindir itself.  You can
                           specify the name of the subdirectory.  For example,
-                          --exec-prefix=/usr/local/bin --enable-subdir=demos
+                          \`--exec-prefix=/usr/local --enable-subdir=demos'
                           would put xscreensaver in /usr/local/bin/, and would
                           put the demos in /usr/local/bin/demos/.  (If DIR
                           begins with /, then bindir will not be prepended.)
@@ -777,6 +777,31 @@ elif test "$with_xshm" != no; then
 fi
 
 
+# Check for the DOUBLE-BUFFER server extension header.
+#
+have_xdbe=no
+with_xdbe_req=unspecified
+AC_ARG_WITH(xdbe-ext,
+[  --with-xdbe-ext         Include support for the DOUBLE-BUFFER server
+                          extension, if possible (this is the default).
+  --without-xdbe-ext      Do not compile in support for this extension.],
+  [with_xdbe="$withval"; with_xdbe_req="$withval"],[with_xdbe=yes])
+
+HANDLE_X_PATH_ARG(with_xdbe, --with-xdbe-ext, DOUBLE-BUFFER)
+
+if test "$with_xdbe" = yes; then
+
+  AC_CHECK_X_HEADER(X11/extensions/Xdbe.h, [have_xdbe=yes])
+  if test "$have_xdbe" = yes; then
+    AC_DEFINE(HAVE_DOUBLE_BUFFER_EXTENSION)    
+  fi
+
+elif test "$with_xdbe" != no; then
+  echo "error: must be yes or no: --with-xdbe-ext=$with_xshm"
+  exit 1
+fi
+
+
 # Check for the SGI-VIDEO-CONTROL server extension header.
 #
 have_sgivc=no
@@ -1476,12 +1501,25 @@ if test ! -n "$ac_cv_zippy_program"; then
          dir_up=`echo "$dir" | sed 's@/[^/]*$@@'`
          changequote([,])
 
-          yow="yow -f $dir_up/etc/yow.lines"
-         if $dir/$yow >&- 2>&- ; then
-           ac_cv_zippy_program="$dir/$yow"
+         yowlines="$dir_up/etc/yow.lines"
+         if $dir/yow -f $yowlines >&- 2>&- ; then
+           ac_cv_zippy_program="$dir/yow -f $yowlines"
            AC_MSG_RESULT($ac_cv_zippy_program)
          else
-           AC_MSG_RESULT(no)
+            #
+            # In newer XEmacs releases, yow.lines is in a different place,
+            # and the easiest way to get it is by calling the new function
+            # `locate-data-file'.
+            #
+            yowlines=`$xemacs_exe $eargs \
+              '(princ (concat (locate-data-file "yow.lines") "\n"))' \
+              2>/dev/null | tail -1`
+            if $dir/yow -f $yowlines >&- 2>&- ; then
+              ac_cv_zippy_program="$dir/yow -f $yowlines"
+              AC_MSG_RESULT($ac_cv_zippy_program)
+            else
+              AC_MSG_RESULT(no)
+            fi
          fi
         fi
       fi
@@ -1975,6 +2013,10 @@ if test "$with_xshm_req" = yes -a "$have_xshm" = no ; then
   warn 'The XSHM extension was requested, but was not found.'
 fi
 
+if test "$with_xdbe_req" = yes -a "$have_xdbe" = no ; then
+  warn 'The DOUBLE-BUFFER extension was requested, but was not found.'
+fi
+
 if test "$with_sgivc_req" = yes -a "$have_sgivc" = no ; then
   warn 'The SGI-VIDEO-CONTROL extension was requested, but was not found.'
 fi
@@ -2138,7 +2180,60 @@ eval HACKDIR=${HACKDIR}
 bindir=`echo  "${bindir}"  | sed 's@/$@@;s@//*@/@g'`
 HACKDIR=`echo "${HACKDIR}" | sed 's@/$@@;s@//*@/@g'`
 
+
+# Sanity check the subdir
+for bad_choice in xscreensaver xscreensaver-demo xscreensaver-command ; do
+  if test "${HACKDIR}" = "${bindir}/${bad_choice}" ; then
+    echo ""
+    AC_MSG_ERROR([\"--enable-subdir=${bindir}/${bad_choice}\" won't work.
+                   There will be an executable installed with that name, so
+                   that can't be the name of a directory as well.  Please
+                   re-configure with a different directory name.])
+  fi
+done
+
+
+do_dir_warning=no
+
+# Now let's see if there's a previous RPM version already installed.  Blargh!
+
+# M4 sucks!!
+changequote(X,Y)
+rpmv=`(rpm -qv xscreensaver) 2>&- | \
+      sed 's/^xscreensaver-\([0-9][0-9]*[.][0-9][0-9]*\)-[0-9][0-9]*$/\1/'`
+changequote([,])
+
+if test \! -z "$rpmv" ; then
+  rpmbdir=`rpm -ql xscreensaver | sed -n 's@^\(.*\)/xscreensaver-demo$@\1@p'`
+  rpmhdir=`rpm -ql xscreensaver | sed -n 's@^\(.*\)/attraction$@\1@p'`
+
+  warning=no
+  warnL "There is already an installed RPM of xscreensaver $rpmv"
+  warn2 "on this system.  You might want to remove it (with"
+  warn2 '"rpm -ve xscreensaver") before running "make install"'
+  warn2 "from this directory."
+  echo ""
+  warn2 "Alternately, you could build this version of xscreensaver"
+  warn2 'as an RPM, and then install that.  An "xscreensaver.spec"'
+  warn2 "file is included.  See the RPM documentation for more info."
+  echo ""
+
+  if test "$rpmbdir" = "$rpmhdir" ; then
+    warn2 "The RPM version was installed in $rpmbdir."
+  else
+    warn2 "The RPM version was installed in $rpmbdir,"
+    warn2 "with demos in $rpmhdir."
+  fi
+
+  do_dir_warning=yes
+fi
+
+
 if test "${bindir}" = "${HACKDIR}" ; then
+  do_dir_warning=yes
+fi
+
+if test "$do_dir_warning" = yes; then
   echo ""
   echo "$warnsep"
   echo ""
@@ -2146,7 +2241,7 @@ if test "${bindir}" = "${HACKDIR}" ; then
   echo '      "xscreensaver-demo", and "xscreensaver-command" executables'
   echo "      will be installed in ${bindir}."
   echo ""
-  echo "      The various graphics demos (80+ different executables) will"
+  echo "      The various graphics demos (90+ different executables) will"
   echo "      also be installed in ${HACKDIR}."
   echo ""
   echo "      If you would prefer the demos to be installed elsewhere"