如何在32位Linux上编译android goldfish 3.4内核

Question

First let me tell you that I am working on Ubuntu 12.04 LTS 32-bit. I am trying to compile Goldfish 3.4 kernel. I downloaded a prebuilt gcc from:

git clone https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6

However, I found that it doesn't work because it's 64-bit ELF file. Where can I find a 32-bit arm-eabi-gcc?

Answer 1

You need to set 'ARCH' explicitly to 'arm'

I used to compile a goldfish kernel 3.4 on 32-bit Linux using the following steps:

git clone https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.8

Add bin directory to your PATH variable, since it contains the required compiler and linker

export ARCH=arm

export SUBARCH=arm

export CROSS_COMPILE=arm-eabi-

make goldfish_armv7_defconfig

make -j4

After a successful compilation, the kernel image can be found under:

$KERNEL_SRC/arch/arm/boot/ zImage