DirectFB porting to uCLinux/EM8620L platform（转）

1.1 Development Environment

1.1.1 EM8620L target platform environment

Item	Element	Resources
Hardware	EM8620L	http://www.
Software	kernel = uCLinux-2.4.22	ToolChains
	DirectFB = DirectFB-0.9.22
	freetype = freetype-2.1.3
	libjpeg = jpeg-6b	ftp://ftp.uu.net/graphics/jpeg/jpegsrc.v6b.tar.gz
	libpng = png-1.2.2
	zlib = zlib-1.1.4	http://www./zlib-1.1.4.tar.gz

1.1.2 x86 host machine environment

Item	Element	Resources
OS	Linux ( Redhat FC3 )	http://ftp./pub/redhat/linux/
host compiler	gcc 3.3.4	http://www./software/gcc/
cross compiler	arm-elf-gcc

1.2 Install DirectFB

1.2.1 Prepare libraries used in DirectFB

• Extract each source code
• Make a directory to hold all libs and includes 
  # mkdir DFB
  # cd DFB
  # mkdir lib
  # mkdir include
   
• create libjpeg
           
  # cd jpeg-6b
  # CC=arm-elf-gcc CXX=arm-elf-g++ AR=arm-elf-ar \
          RANLIB=arm-elf-ranlib LD=arm-elf-ld ./configure \
          --target arm-elf-linux --host x86-pc-linux \
          --disable-shared --enable-static
  
  Edit Makefile
  Change Line 39 from
  LIBTOOL = ./libtool  to LIBTOOL = libtool
  
  Replace all "--mode" with "--tag" in Makefile
  
  # make libjpeg.a
  # cp libjpeg.a ../DFB/lib/
  # cp jpeglib.h ../DFB/include/
  
• create zlib
  
  # CC=arm-elf-gcc CXX=arm-elf-g++ AR=arm-elf-ar \
          RANLIB=arm-elf-ranlib LD=arm-elf-ld ./configure
         
  modify Makefile for cross compile
  line 30 : AR=arm-elf-ar  to AR=arm-elf-ar cr
  # make
  # cp libjz.a ../DFB/lib/
  # cp ../zlib-1.1.4/zconf.h ../DFB/include/
  # cp zlib.h ../DFB/include/
  
• create libpng
  
  # cp scripts/makefile.linux Makefile 
  
  modify Makefile for cross compile
  line 11 : change "gcc" to "arm-elf-gcc" 
  line 39 : change "ranlib" to "arm-elf-ranlib"
  line 59 : change "ar" to "arm-elf-ar"
  line 20&21
  ZLIBLIB=../DFB/lib
  ZLIBINC=../DFB/include
  
  # make libpng.a
  # cp libpng.a ../DFB/lib/
  # cp png.h ../DFB/include/
  
• create freetype
  
  # CC=arm-elf-gcc CXX=arm-elf-g++ AR=arm-elf-ar \
          RANLIB=arm-elf-ranlib LD=arm-elf-ld \
  ./configure
  # make 
  # cp objs/.libs/libfreetype.a ../DFB/lib/
  # cp -r include/* ../DFB/include
  
• Cross Compile DirectFB for uCLinux
  
  # CFLAGS=-I/home/RMT/Project/Develop/DFB/include \
          LDFLAGS=-L/home/RMT/Project/Develop/DFB/lib \
          CC=arm-elf-gcc CXX=arm-elf-g++ AR=arm-elf-ar \
          RANLIB=arm-elf-ranlib LD=arm-elf-ld \
          ./configure --target arm-elf-linux --host x86-pc-linux \
          --disable-shared --enable-static --disable-sdl \
          --with-gfxdrivers=none --with-inputdrivers=none \
          --prefix=/home/RMT/Project/DFB
  
  # LD=arm-elf-ld make
  # make install
  # export PKG_CONFIG_PATH=(your pkgconfig):$PKG_CONFIG_PATH
  Now all DFB libs and includes are in /home/RMT/Project/DFB