[Galaxy S III I9305 (4G LTE + 2GB RAM) Android Deve] BorkenStyler:
Thank you for your help, this helped me reach the next error:

max@max-VirtualBox:~/android/system$ brunch i9305
including vendor/cm/vendorsetup.sh
Trying dependencies-only mode on a non-existing device tree?

============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=6.0.1
CM_VERSION=13.0-20160831-UNOFFICIAL-i9305
TARGET_PRODUCT=cm_i9305
TARGET_BUILD_VARIANT=userdebug
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a-neon
TARGET_CPU_VARIANT=cortex-a9
TARGET_2ND_ARCH=
TARGET_2ND_ARCH_VARIANT=
TARGET_2ND_CPU_VARIANT=
HOST_ARCH=x86_64
HOST_OS=linux
HOST_OS_EXTRA=Linux-4.2.0-30-generic-x86_64-with-Ubuntu-14.04-trusty
HOST_BUILD_TYPE=release
BUILD_ID=MOB30Z
OUT_DIR=/home/max/android/system/out
============================================

============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=6.0.1
CM_VERSION=13.0-20160831-UNOFFICIAL-i9305
TARGET_PRODUCT=cm_i9305
TARGET_BUILD_VARIANT=userdebug
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a-neon
TARGET_CPU_VARIANT=cortex-a9
TARGET_2ND_ARCH=
TARGET_2ND_ARCH_VARIANT=
TARGET_2ND_CPU_VARIANT=
HOST_ARCH=x86_64
HOST_OS=linux
HOST_OS_EXTRA=Linux-4.2.0-30-generic-x86_64-with-Ubuntu-14.04-trusty
HOST_BUILD_TYPE=release
BUILD_ID=MOB30Z
OUT_DIR=/home/max/android/system/out
============================================
"ebtables is disabled on this build"
awk: line 1: syntax error at or near ,
make: Entering directory `/home/max/android/system'
build/core/copy_headers.mk:15: warning: overriding commands for target `/home/max/android/system/out/target/product/i9305/obj/include/libsecmm/mfc_errno.h'
build/core/copy_headers.mk:15: warning: ignoring old commands for target `/home/max/android/system/out/target/product/i9305/obj/include/libsecmm/mfc_errno.h'
build/core/copy_headers.mk:15: warning: overriding commands for target `/home/max/android/system/out/target/product/i9305/obj/include/libsecmm/mfc_interface.h'
build/core/copy_headers.mk:15: warning: ignoring old commands for target `/home/max/android/system/out/target/product/i9305/obj/include/libsecmm/mfc_interface.h'
build/core/copy_headers.mk:15: warning: overriding commands for target `/home/max/android/system/out/target/product/i9305/obj/include/libsecmm/SsbSipMfcApi.h'
build/core/copy_headers.mk:15: warning: ignoring old commands for target `/home/max/android/system/out/target/product/i9305/obj/include/libsecmm/SsbSipMfcApi.h'
build/core/copy_headers.mk:15: warning: overriding commands for target `/home/max/android/system/out/target/product/i9305/obj/include/libsecmm/mfc_errno.h'
build/core/copy_headers.mk:15: warning: ignoring old commands for target `/home/max/android/system/out/target/product/i9305/obj/include/libsecmm/mfc_errno.h'
build/core/copy_headers.mk:15: warning: overriding commands for target `/home/max/android/system/out/target/product/i9305/obj/include/libsecmm/mfc_interface.h'
build/core/copy_headers.mk:15: warning: ignoring old commands for target `/home/max/android/system/out/target/product/i9305/obj/include/libsecmm/mfc_interface.h'
build/core/copy_headers.mk:15: warning: overriding commands for target `/home/max/android/system/out/target/product/i9305/obj/include/libsecmm/SsbSipMfcApi.h'
build/core/copy_headers.mk:15: warning: ignoring old commands for target `/home/max/android/system/out/target/product/i9305/obj/include/libsecmm/SsbSipMfcApi.h'
packages/apps/AudioFX/tests/Android.mk:26: *** SIGNING MODIOFX WITH TEST KEY ***
build/core/base_rules.mk:559: warning: overriding commands for target `/home/max/android/system/out/target/product/i9305/root/res/images/charger/battery_fail.png'
build/core/base_rules.mk:559: warning: ignoring old commands for target `/home/max/android/system/out/target/product/i9305/root/res/images/charger/battery_fail.png'
find: `dummy': No such file or directory
build/core/base_rules.mk:157: *** vendor/samsung/i9305-cm13-device-cm-13.0/audio: MODULE.TARGET.SHARED_LIBRARIES.audio.primary.smdk4x12 already defined by device/samsung/i9305/audio. Stop.
make: Leaving directory `/home/max/android/system'

#### make failed to build some targets (37 seconds) ####

Any idea ?

This of course is cm13, i followed by the guide in the first post.

I was just asking about what skills i need to port cm14 to the i9305.