graphics/osgEarth: Update Build.

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

graphics/osgEarth/osgEarth.SlackBuild

@@ -23,6 +23,7 @@
 #  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 PRGNAM=osgEarth
+SRCNAM=osgearth
 TARBALLNAME=osgearth-osgearth
 VERSION=${VERSION:-2.3}
 BUILD=${BUILD:-1}
@@ -61,7 +62,7 @@ rm -rf $PKG
 mkdir -p $TMP $PKG $OUTPUT
 cd $TMP
 rm -rf $TARBALLNAME-$VERSION
-tar xvf $CWD/$TARBALLNAME-$VERSION.tar.gz
+tar xvf $CWD/$TARBALLNAME-$VERSION.tar.gz || tar xvf $CWD/$SRCNAM-$VERSION.tar.gz
 cd $TARBALLNAME-$VERSION
 chown -R root:root .
 find -L . \
@@ -74,7 +75,7 @@ mkdir -p build
 cd build
   cmake \
     -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
-    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
+    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS -lX11" \
     -DCMAKE_INSTALL_PREFIX=/usr \
     -DLIB_SUFFIX=${LIBDIRSUFFIX} \
     -DCMAKE_BUILD_TYPE=Release .. \
@@ -87,9 +88,7 @@ find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | gr
   | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
 
 mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
-cp -a \
-  LICENSE.txt README.txt \
-  $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a LICENSE.txt README.txt $PKG/usr/doc/$PRGNAM-$VERSION
 cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
 
 mkdir -p $PKG/install