android 移植 rp-pppoe

1.android已经自带pppd程序，所以就不用移植pppd了

2.下载rp-pppoe代码
wget -c http://www.roaringpenguin.com/files/download/rp-pppoe-3.10.tar.gz

3.把rp-pppoe-3.10.tar.gz解压到android的 external目录下

4.cd external/rp-pppoe-3.10/src
1) ./configure --host=arm-linux
2) vi config.h
    一、注释掉 #define HAVE_SYS_UIO_H 1 要不然会提示重定义的警告
    二、如果提示 if.c:34:26: error: net/ethernet.h: No such file or directory
       注释掉 #define HAVE_NET_ETHERNET_H 1
    三、我的config.h 内容如下

-------------------- config.h ---------------------------------------------
/* config.h. Generated from config.h.in by configure. */
/* config.h.in. Generated automatically from configure.in by autoheader. */
/* LIC: GPL */

/* Define to empty if the keyword does not work. */
/* #undef const */

/* Define if you have that is POSIX.1 compatible. */
#define HAVE_SYS_WAIT_H 1

/* Define to `int' if doesn't define. */
/* #undef pid_t */

/* Define as the return type of signal handlers (int or void). */
#define RETSIGTYPE void

/* Define if the setvbuf function takes the buffering type as its second
   argument and the buffer pointer as the third, as on System V
   before release 3. */
/* #undef SETVBUF_REVERSED */

/* Define if you have the ANSI C header files. */
#define STDC_HEADERS 1

/* Define if you can safely include both and . */
#define TIME_WITH_SYS_TIME 1

/* Define if your declares struct tm. */
/* #undef TM_IN_SYS_TIME */

#define HAVE_STRUCT_SOCKADDR_LL 1

/* The number of bytes in a unsigned int. */
#define SIZEOF_UNSIGNED_INT 4

/* The number of bytes in a unsigned long. */
#define SIZEOF_UNSIGNED_LONG 4

/* The number of bytes in a unsigned short. */
#define SIZEOF_UNSIGNED_SHORT 2

/* Define if you have the select function. */
#define HAVE_SELECT 1

/* Define if you have the socket function. */
#define HAVE_SOCKET 1

/* Define if you have the strerror function. */
#define HAVE_STRERROR 1

/* Define if you have the strtol function. */
#define HAVE_STRTOL 1

/* Define if you have the header file. */
#define HAVE_ASM_TYPES_H 1

/* Define if you have the header file. */
#define HAVE_FCNTL_H 1

/* Define if you have the header file. */
#define HAVE_GETOPT_H 1

/* Define if you have the header file. */
#define HAVE_LINUX_IF_ETHER_H 1

/* Define if you have kernel-mode PPPoE in Linux file. */
/* #undef HAVE_LINUX_KERNEL_PPPOE */

/* Define if you have the header file. */
#define HAVE_LINUX_IF_PACKET_H 1

/* Define if you have the header file. */
#define HAVE_LINUX_IF_PPPOX_H 1

/* Define if you have the header file. */
/* #undef HAVE_NET_BPF_H */

/* Define if you have the header file. */
#define HAVE_NET_IF_ARP_H 1

/* Define if you have the header file. */
//#define HAVE_NET_ETHERNET_H 1

/* Define if you have the header file. */
#define HAVE_NET_IF_H 1

/* Define if you have the header file. */
#define HAVE_LINUX_IF_H 1

/* Define if you have the header file. */
/* #undef HAVE_NET_IF_DL_H */

/* Define if you have the header file. */
/* #undef HAVE_NET_IF_ETHER_H */

/* Define if you have the header file. */
/* #undef HAVE_NET_IF_TYPES_H */

/* Define if you have the header file. */
#define HAVE_NETINET_IF_ETHER_H 1

/* Define if you have the header file. */
#define HAVE_NETPACKET_PACKET_H 1

/* Define if you have the header file. */
#define HAVE_SYS_CDEFS_H 1

/* Define if you have the header file. */
/* #undef HAVE_SYS_DLPI_H */

/* Define if you have the header file. */
#define HAVE_SYS_IOCTL_H 1

/* Define if you have the header file. */
#define HAVE_SYS_PARAM_H 1

/* Define if you have the header file. */
#define HAVE_SYS_SOCKET_H 1

/* Define if you have the header file. */
#define HAVE_SYS_TIME_H 1

/* Define if you have the header file. */
//#define HAVE_SYS_UIO_H 1

/* Define if you have the header file. */
#define HAVE_SYSLOG_H 1

/* Define if you have the header file. */
#define HAVE_UNISTD_H 1

/* Define if you have the N_HDLC line discipline in linux/termios.h */
/* #undef HAVE_N_HDLC */

/* Define if bitfields are packed in reverse order */
#define PACK_BITFIELDS_REVERSED 1

/* Define to include debugging code */
#define DEBUGGING_ENABLED 1

/* Solaris moans if we don't do this... */
#ifdef __sun
#define __EXTENSIONS__ 1
#endif

-----------------------end of config.h -------------------------------------

5.external/rp-pppoe-3.10下创建Android.mk文件，内容如下

-------------------- Android.mk --------------------------------------------
LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)

LOCAL_SRC_FILES:=\
    src/pppoe.c \
    src/if.c \
    src/debug.c \
    src/common.c \
    src/ppp.c \
    src/discovery.c \

LOCAL_STATIC_LIBRARIES :=

LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := pppoe
LOCAL_C_INCLUDES += $(LOCAL_PATH)/src
LOCAL_CFLAGS += '-DVERSION="3.10"' \
    '-DPPPD_PATH="/system/bin/pppd"'

include $(BUILD_EXECUTABLE)

include $(call all-makefiles-under,$(LOCAL_PATH))

-------------------- end of Android.mk -------------------------------------

错误及解决方法：
1) /dev/pts/目录为空， pppoe 提示找不到文件 /dev.pts/0
内核配置添加如下选项
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
CONFIG_UNIX98_PTYS=y
CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256

2) 提示 pppoe: read (asyncReadFromPPP): Session 8: I/O error
   把内核中PPPOE的所有选项都支持上就万事大吉了
# CONFIG_WAN is not set
CONFIG_PPP=y
CONFIG_PPP_MULTILINK=y
CONFIG_PPP_FILTER=y
CONFIG_PPP_ASYNC=y
CONFIG_PPP_SYNC_TTY=y
CONFIG_PPP_DEFLATE=y
CONFIG_PPP_BSDCOMP=y
CONFIG_PPP_MPPE=y
CONFIG_PPPOE=y
CONFIG_PPPOL2TP=y
CONFIG_PPPOLAC=y
CONFIG_PPPOPNS=y
# CONFIG_SLIP is not set
CONFIG_SLHC=y

参考文档：
1. http://blog.csdn.net/linweig/article/details/5481355

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