the end of line 4 means that line 4 and line 5 are on one line.
cd $BUILD_DIR
- wget http://oss.oetiker.ch/rrdtool/pub/libs/libpng-1.2.8-config.tar.gz
+ wget http://oss.oetiker.ch/rrdtool/pub/libs/libpng-1.2.10.tar.gz
tar zxvf libpng-1.2.10.tar.gz
cd libpng-1.2.10
env CPPFLAGS="-I$BUILD_DIR/lb/include" LDFLAGS="-L$BUILD_DIR/lb/lib" CFLAGS="-O3 -fPIC" \