Android中编译wapi

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1.      创建Android.mk

# Copyright 2009 The Android Open Source Project

LOCAL_PATH:= $(call my-dir)

################## build libecc ###################
include $(CLEAR_VARS)

LOCAL_SRC_FILES := ECC2.2-2008/ecc.c

LOCAL_C_INCLUDES +=       \
  $(LOCAL_PATH)/ECC2.2-2008

LOCAL_CFLAGS += -Wall -W -O2 -DIWN_ECC_GCCINT64 -DASUE
LOCAL_MODULE := libecc
#LOCAL_STATIC_LIBRARIES := libcutils libc libm
include $(BUILD_STATIC_LIBRARY)

################## build libiwnwai_asue ###################
include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
  libiwnwai_asue/cert.c \
  libiwnwai_asue/common.c \
  libiwnwai_asue/hmac_sha256.c \
  libiwnwai_asue/interface.c \
  libiwnwai_asue/wapi.c

LOCAL_C_INCLUDES +=       \
       $(LOCAL_PATH)/libiwnwai_asue/include

LOCAL_CFLAGS += -Wall -O2
LOCAL_MODULE := libiwnwai_asue
#LOCAL_STATIC_LIBRARIES := libcutils libc libm
include $(BUILD_STATIC_LIBRARY)

################## build libsms4 ###################
include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
  sms4/sms4lib/lib/sms4c.c \
  sms4/sms4lib/lib/wpi_pcrypt.c

LOCAL_C_INCLUDES +=       \
       $(LOCAL_PATH)/sms4/sms4lib/lib

LOCAL_CFLAGS += -Wall -O2 -DLE
LOCAL_MODULE := libsms4
#LOCAL_STATIC_LIBRARIES := libcutils libc libm
include $(BUILD_STATIC_LIBRARY)


################## build wapic ###################
include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
  wapic/common.c \
  wapic /config.c \
  wapic /ctrl_iface.c \
  wapic /driver_wext.c \
  wapic /drivers.c \
  wapic /eloop.c \
  wapic /l2_packet_linux.c \
  wapic /main.c \
  wapic /wapi.c \
  wapic /wapi_asue.c \
  wapic /wapi_asue_retry.c \
  wapic /wapi_config.c \
  wapic /wapi_sm.c

LOCAL_C_INCLUDES +=       \
       $(LOCAL_PATH)/wapic_exe/include

LOCAL_CFLAGS += -Wall -fsigned-char -O2 -DCONFIG_DRIVER_WEXT

LOCAL_MODULE:= wapic

LOCAL_STATIC_LIBRARIES := libecc libiwnwai_asue libsms4
# libcutils libc libm

#LOCAL_FORCE_STATIC_EXECUTABLE := true
#LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES)
#LOCAL_UNSTRIPPED_PATH := $(TARGET_ROOT_OUT_UNSTRIPPED)
#LOCAL_MODULE_TAGS := eng

include $(BUILD_EXECUTABLE)

################## copy config files ###################
wapi_cer := $(TARGET_OUT_ETC)/wifi/user.cer
$(wapi_cer) : $(LOCAL_PATH)/wapic /user.cer | $(ACP)
       $(transform-prebuilt-to-target)
ALL_PREBUILT += $(wapi_cer)

wapi_conf := $(TARGET_OUT_ETC)/wifi/wapi.conf
$(wapi_conf) : $(LOCAL_PATH)/wapic /wapi.conf | $(ACP)
       $(transform-prebuilt-to-target)
ALL_PREBUILT += $(wapi_conf)

2.      编译

mmm external/wapi_asue_src

在链接时报错：
out/target/product/littleton/obj/STATIC_LIBRARIES/libiwnwai_asue_intermediates/libiwnwai_asue.a(interface.o): In function `WIFI_lib_init':
external/tools/wapi_asue_app_1.1.0-M004/wapi_asue_src/libiwnwai_asue/interface.c:631: undefined reference to `ECC_Init'
out/target/product/littleton/obj/STATIC_LIBRARIES/libiwnwai_asue_intermediates/libiwnwai_asue.a(wapi.o): In function `asue_x_x_p_derivation':
external/tools/wapi_asue_app_1.1.0-M004/wapi_asue_src/libiwnwai_asue/wapi.c:534: undefined reference to `ecc192_genkey'

原因：经查看libecc.a中确定包含ECC_Init 等API，为什么链接时就不行呢？经过一些时间的浪费，终于找到原因，LIB库的链接顺序不正确，将
LOCAL_STATIC_LIBRARIES := libecc libiwnwai_asue libsms4
改为
LOCAL_STATIC_LIBRARIES := libiwnwai_asue libsms4 libecc
编译即可。

继续编译，链接时仍有报错：
target Non-prelinked: wapic (out/target/product/littleton/symbols/system/bin/wapic)
out/host/linux-x86/bin/acp -fpt out/target/product/littleton/obj/EXECUTABLES/wapic_intermediates/LINKED/wapic out/target/product/littleton/symbols/system/bin/wapic
target Strip: wapic (out/target/product/littleton/obj/EXECUTABLES/wapic_intermediates/wapic)
out/host/linux-x86/bin/soslim --strip --shady --quiet out/target/product/littleton/symbols/system/bin/wapic --outfile out/target/product/littleton/obj/EXECUTABLES/wapic_intermediates/wapic
build/tools/soslim/main.c(167): Cannot create file out/target/product/littleton/obj/EXECUTABLES/wapic_intermediates/wapic: Is a directory (21)!
make: *** [out/target/product/littleton/obj/EXECUTABLES/wapic_intermediates/wapic] Error 1

wapic是我们目标程序的名字，竟然报错说是一个目录名。进入out/target/product/littleton/obj/EXECUTABLES/wapic_intermediates/目录，发现wapic目录确实存在，并且存放了原代码中编译的.o文件，看来目标程序要放的目录是不可以有同名的目录存在的。
将原代码中wapi_asue_src/ wapic 的目录名改为其它名称。再次编译，OK。

由于LIB的顺序问题，又浪费了一个多小时时间。


本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u3/97236/showart_1960044.html