Compiling Firefox OS for Android One (Sprout)

I'm trying to compile Firefox OS using these files: "https://github.com/b2g-sprout/" . But I am having troubles 'coz there's no really fomal instructions from the Github link. I'm only a Web Developer so I don't know much about ROMs.

What I Did:
1 - Extracted "B2G" and "b2g-manifest" in home folder
2 - Extracted "device-sprout" on "device/google/sprout/"
3 - Backup System
4 - Run ANDROIDFS_DIR=backup_device ./config.sh sprout '../b2g-manifest/default.xml'
5 - Downloaded Files somewhere to get "sprout-vendor.mk"
5 - Run ./build.sh


Got this error after ./build.sh:

HTML Code:

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<code>
./build.sh
including sdk/bash_completion/adb.bash

============================================
PLATFORM_VERSION_CODENAME=AOSP
PLATFORM_VERSION=4.0.4.0.4.0.4
TARGET_PRODUCT=full_sprout
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a-neon
HOST_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-3.16.0-45-generic-x86_64-with-elementary_OS-0.3-freya
HOST_BUILD_TYPE=release
BUILD_ID=OPENMASTER
OUT_DIR=out
============================================

============================================
PLATFORM_VERSION_CODENAME=AOSP
PLATFORM_VERSION=4.0.4.0.4.0.4
TARGET_PRODUCT=full_sprout
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a-neon
HOST_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-3.16.0-45-generic-x86_64-with-elementary_OS-0.3-freya
HOST_BUILD_TYPE=release
BUILD_ID=OPENMASTER
OUT_DIR=out
============================================
device/google/sprout/wpa_supplicant/Android.mk:19: Build wpa_supplicant_lib...
device/google/sprout/wpa_supplicant/Android.mk:27: external/wpa_supplicant_8/wpa_supplicant/android.config: No such file or directory
CMake and NDK (/home/zigmund/B2G/prebuilt/ndk/android-ndk-r7) found, will compile apitrace
external/apitrace/Android.mk:77: warning: overriding commands for target `out/target/product/sprout/obj/SHARED_LIBRARIES/egltrace_intermediates/LINKED/egltrace.so'
build/core/shared_library.mk:56: warning: ignoring old commands for target `out/target/product/sprout/obj/SHARED_LIBRARIES/egltrace_intermediates/LINKED/egltrace.so'
external/apitrace/Android.mk:82: warning: overriding commands for target `out/target/product/sprout/system/lib/egltrace.so'
build/core/base_rules.mk:532: warning: ignoring old commands for target `out/target/product/sprout/system/lib/egltrace.so'
external/apitrace/Android.mk:96: warning: overriding commands for target `out/target/product/sprout/obj/EXECUTABLES/apitrace_intermediates/LINKED/apitrace'
build/core/executable.mk:22: warning: ignoring old commands for target `out/target/product/sprout/obj/EXECUTABLES/apitrace_intermediates/LINKED/apitrace'
external/screencap-gonk/Android.mk:35: warning: overriding commands for target `out/target/product/sprout/system/bin/screencap-gonk'
build/core/base_rules.mk:532: warning: ignoring old commands for target `out/target/product/sprout/system/bin/screencap-gonk'
find: `../../external/apache-http/src/org/apache/http': No such file or directory
find: `../../external/apache-http/src/org/apache/http': No such file or directory
find: `../../external/apache-http/src/org/apache/http': No such file or directory
find: `../../external/nist-sip/java': No such file or directory
find: `../../external/apache-http/src': No such file or directory
find: `../../external/libphonenumber/java/src': No such file or directory
gaia/Android.mk:53: warning: overriding commands for target `out/target/product/sprout/data/local/gaia'
build/core/base_rules.mk:532: warning: ignoring old commands for target `out/target/product/sprout/data/local/gaia'
gonk-misc/Android.mk:30: warning: overriding commands for target `out/target/product/sprout/obj/ETC/init.rc_intermediates/init.rc'
build/core/prebuilt.mk:117: warning: ignoring old commands for target `out/target/product/sprout/obj/ETC/init.rc_intermediates/init.rc'
gonk-misc/Android.mk:137: warning: overriding commands for target `out/target/product/sprout/obj/DATA/sources.xml_intermediates/sources.xml'
build/core/prebuilt.mk:117: warning: ignoring old commands for target `out/target/product/sprout/obj/DATA/sources.xml_intermediates/sources.xml'
gonk-misc/Android.mk:359: warning: overriding commands for target `out/target/product/sprout/system/gecko'
build/core/base_rules.mk:532: warning: ignoring old commands for target `out/target/product/sprout/system/gecko'
gonk-misc/Android.mk:447: warning: overriding commands for target `out/target/product/sprout/obj/DATA/gecko_intermediates/gecko'
build/core/prebuilt.mk:117: warning: ignoring old commands for target `out/target/product/sprout/obj/DATA/gecko_intermediates/gecko'
build/core/base_rules.mk:82: *** Module name: librilutils
build/core/base_rules.mk:83: *** Makefile location: hardware/ril/librilutils
build/core/base_rules.mk:84: *
build/core/base_rules.mk:85: * Each module must use a LOCAL_MODULE_TAGS in its
build/core/base_rules.mk:86: * Android.mk. Possible tags declared by a module:
build/core/base_rules.mk:87: *
build/core/base_rules.mk:88: *    optional, debug, eng, tests, samples
build/core/base_rules.mk:89: *
build/core/base_rules.mk:90: * If the module is expected to be in all builds
build/core/base_rules.mk:91: * of a product, then it should use the
build/core/base_rules.mk:92: * "optional" tag:
build/core/base_rules.mk:93: *
build/core/base_rules.mk:94: *    Add "LOCAL_MODULE_TAGS := optional" in the
build/core/base_rules.mk:95: *    Android.mk for the affected module, and add
build/core/base_rules.mk:96: *    the LOCAL_MODULE value for that component
build/core/base_rules.mk:97: *    into the PRODUCT_PACKAGES section of product
build/core/base_rules.mk:98: *    makefile(s) where it's necessary, if
build/core/base_rules.mk:99: *    appropriate.
build/core/base_rules.mk:100: *
build/core/base_rules.mk:101: * If the component should be in EVERY build of ALL
build/core/base_rules.mk:102: * products, then add its LOCAL_MODULE value to the
build/core/base_rules.mk:103: * PRODUCT_PACKAGES section of
build/core/base_rules.mk:104: * build/target/product/core.mk
build/core/base_rules.mk:105: *
build/core/base_rules.mk:106: *** user tag detected on new module - user tags are only supported on legacy modules.  Stop.

real        0m42.594s
user        0m4.868s
sys        0m4.684s

> Build failed! <

Build with |./build.sh -j1| for better messages
If all else fails, use |rm -rf objdir-gecko| to clobber gecko and |rm -rf out| to clobber everything else.
</code>

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After executing "./build.sh rm -rf out":

HTML Code:

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<code>
./build.sh rm -rf out
including sdk/bash_completion/adb.bash

============================================
PLATFORM_VERSION_CODENAME=AOSP
PLATFORM_VERSION=4.0.4.0.4.0.4
TARGET_PRODUCT=full_sprout
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a-neon
HOST_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-3.16.0-45-generic-x86_64-with-elementary_OS-0.3-freya
HOST_BUILD_TYPE=release
BUILD_ID=OPENMASTER
OUT_DIR=out
============================================

make: *** out: Is a directory.  Stop.

real        0m0.002s
user        0m0.000s
sys        0m0.002s

> Build failed! <

Build with |./build.sh -j1| for better messages
If all else fails, use |rm -rf objdir-gecko| to clobber gecko and |rm -rf out| to clobber everything else.
</code>

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