Question

I have compiled the Linux kernel source for android. After building the source i got error,

that is, after

$ARCH=arm CROSS_COMPILE=/path/to/mydroid/prebuilt/linux-x86/toolchain/arm-eabi-4.4.0/bin/arm-eabi- make

i got:

  CALL    scripts/checksyscalls.sh
  CHK     include/linux/compile.h
 Kernel: arch/x86/boot/bzImage is ready  (#1)
  Building modules, stage 2.
  MODPOST 2283 modules
WARNING: modpost: Found 1 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'

so i did the following:

root@ubuntu:~/common# make CONFIG_DEBUG_SECTION_MISMATCH=y
  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h

After even after this i got the same output

root@ubuntu:~/common# make
  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h
  SYMLINK include/asm -> include/asm-x86
  CALL    scripts/checksyscalls.sh
  CHK     include/linux/compile.h
Kernel: arch/x86/boot/bzImage is ready  (#3)
  Building modules, stage 2.
  MODPOST 2283 modules
WARNING: modpost: Found 1 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'

The actual output should be

 Kernel: arch/arm/boot/Image is ready
 Kernel: arch/arm/boot/zImage is ready

Also i have executed “make” command many times, now there is no “image” in the arch/arm/boot/ directory. I tried to run the emulator with the image from arch/x86/boot but that didn’t work. It gave me an error.
The actual command is

./emulator -avd my_avd -kernel ~/common/arch/arm/boot/zImage -show-kernel -verbose

Now, as i don’t have any image in /arch/arm/boot i did:

root@ubuntu:~/android-sdk-linux_x86/tools# ./emulator -avd avd1.5 -kernel ~/common/arch/x86/boot/bzImage -show-kernel -verbose

and i got this error:

emulator: control console listening on port 5554, ADB on port 5555
emulator: can't connect to ADB server: Connection refused
emulator: ping program: /home/preetam/android-sdk-linux_x86/tools/ddms
emulator: ping command: /home/preetam/android-sdk-linux_x86/tools/ddms ping emulator 10.0
Unknown cp14 write op1:6 crn:0 crm:8 op2:6
qemu: fatal: Trying to execute code outside RAM or ROM at 0xff91c756

R00=00000000 R01=000005a1 R02=00000100 R03=00000000
R04=00000000 R05=00000000 R06=00000000 R07=00000000
R08=00000000 R09=00000000 R10=00000000 R11=00000000
R12=00000000 R13=00000000 R14=00010010 R15=ff91c756
PSR=400001f3 -Z-- T svc32
Aborted
root@ubuntu:~/android-sdk-linux_x86/tools# 

I don’t understand where i am doing wrong, i have done something stupid, please someone tell how can i solve this.?
thank you!

Answer 1

You can try running:

ARCH=arm CROSS_COMPILE=/path/to/mydroid/prebuilt/linux-x86/toolchain/arm-eabi-4.4.0/bin/arm-eabi- make CONFIG_DEBUG_SECTION_MISMATCH=y

So that make runs using the ARM settings

Also, which kernel version are you compiling? Where did you get this kernel? Why can’t you use a kernel from the Android project directly?