[Droid Incredible Q&A, Help & Troubleshooting] tcberg2010:
I'm having some issues attempting to compile android source. I can compile CM just fine..That's easy. I set up my build environment and pulled the device proprietaries from OMFGB's github. ran extract-files.sh successfully(currently running CM 7.1 KANG). then ran

. build/envsetup.sh
lunch full_inc-userdebug
make -j8

I receive an output of this>

============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=2.3.4
TARGET_PRODUCT=full_inc
TARGET_BUILD_VARIANT=userdebug
TARGET_SIMULATOR=false
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
HOST_ARCH=x86
HOST_OS=linux
HOST_BUILD_TYPE=release
BUILD_ID=GINGERBREAD
============================================
Checking build tools versions...
find: `frameworks/base/frameworks/base/docs/html': No such file or directory
find: `out/target/common/docs/gen': No such file or directory
find: `frameworks/base/frameworks/base/docs/html': No such file or directory
find: `out/target/common/docs/gen': No such file or directory
find: `frameworks/base/frameworks/base/docs/html': No such file or directory
find: `out/target/common/docs/gen': No such file or directory
find: `frameworks/base/frameworks/base/docs/html': No such file or directory
find: `out/target/common/docs/gen': No such file or directory
find: `frameworks/base/frameworks/base/docs/html': No such file or directory
find: `out/target/common/docs/gen': No such file or directory
build/core/base_rules.mk:78: *** Module name: gps.inc
build/core/base_rules.mk:79: *** Makefile location: hardware/qcom/gps/loc_api/libloc_api
build/core/base_rules.mk:80: *
build/core/base_rules.mk:81: * Each module must use a LOCAL_MODULE_TAGS in its
build/core/base_rules.mk:82: * Android.mk. Possible tags declared by a module:
build/core/base_rules.mk:83: *
build/core/base_rules.mk:84: * optional, debug, eng, tests, samples
build/core/base_rules.mk:85: *
build/core/base_rules.mk:86: * If the module is expected to be in all builds
build/core/base_rules.mk:87: * of a product, then it should use the
build/core/base_rules.mk:88: * "optional" tag:
build/core/base_rules.mk:89: *
build/core/base_rules.mk:90: * Add "LOCAL_MODULE_TAGS := optional" in the
build/core/base_rules.mk:91: * Android.mk for the affected module, and add
build/core/base_rules.mk:92: * the LOCAL_MODULE value for that component
build/core/base_rules.mk:93: * into the PRODUCT_PACKAGES section of product
build/core/base_rules.mk:94: * makefile(s) where it's necessary, if
build/core/base_rules.mk:95: * appropriate.
build/core/base_rules.mk:96: *
build/core/base_rules.mk:97: * If the component should be in EVERY build of ALL
build/core/base_rules.mk:98: * products, then add its LOCAL_MODULE value to the
build/core/base_rules.mk:99: * PRODUCT_PACKAGES section of
build/core/base_rules.mk:100: * build/target/product/core.mk
build/core/base_rules.mk:101: *
build/core/base_rules.mk:102: *** user tag detected on new module - user tags are only supported on legacy modules. Stop.

I opened up the android.mk in the makefile location and added LOCAL_MODULE_TAGS := optional, added the module name gps.inc to core.mk file and attempted to rebuild..received the same error. I continued to switch around some files in an attempt to fix it with no fix. If anyone could try and give me a hand i would appreciate it. Thanks.