Android编译Native C的helloworld模块
2010-05-28 15:27:00 来源:WEB开发网Install: out/target/product/generic/system/bin/helloworld
out/host/linux-x86/bin/acp -fpt out/target/product/generic/obj/EXECUTABLES/helloworld_intermediates/helloworld out/target/product/generic/system/bin/helloworld
从上面的命令行可以看到,Android编译环境所用的交叉编译工具链是prebuilt/linux-x86/toolchain/arm-eabi-4.2.1/bin/arm-eabi-gcc,-I和-L参数指定了所用的C库头文件和动态库文件路径分别是bionic/libc/include 和out/target/product/generic/obj/lib,其他还包括很多编译选项以及-D所定义的预编译宏。
我们可以利用上面的编译命令,稍加简化来手工编译helloworld程序。先手工删除上次编译得到的helloworld程序:
# rm out/target/product/generic/obj/EXECUTABLES/helloworld_intermediates/hello.o
# rm out/target/product/generic/system/bin/helloworld
再用gcc编译,生成目标文件:
# prebuilt/linux-x86/toolchain/arm-eabi-4.2.1/bin/arm-eabi-gcc -I bionic/libc/arch-arm/include -I bionic/libc/include -I bionic/libc/kernel/common -I bionic/libc/kernel/arch-arm -c -fno-exceptions -Wno-multichar -march=armv5te -mtune=xscale -msoft-float -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-protector -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -include system/core/include/arch/linux-arm/AndroidConfig.h -DANDROID -fmessage-length=0 -W -Wall -Wno-unused -DSK_RELEASE -DNDEBUG -O2 -g -Wstrict-aliasing=2 -finline-functions -fno-inline-functions-called-once -fgcse-after-reload -frerun-cse-after-loop -frename-registers -DNDEBUG -UDEBUG -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -MD -o out/target/product/generic/obj/EXECUTABLES/helloworld_intermediates/hello.o development/hello/hello.c
与Android.mk编译参数比较,上面主要减少了不必要的-I参数。
接下来生成可执行文件:
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