Now it fails on ffmpeg:
1 warning generated.
[ 67% 46449/69326] target arm C: libamffmpeg.vendor <= vendor/amlogic/common/external/ffmpeg/libavutil/../compat/strtod.c
FAILED: out/target/product/kvim3/obj/SHARED_LIBRARIES/libamffmpeg.vendor_intermediates/compat/strtod.o
/bin/bash -c "PWD=/proc/self/cwd prebuilts/clang/host/linux-x86/clang-4691093/bin/clang -I external/zlib -I vendor/amlogic/common/external/ffmpeg -I out/target/product/kvim3/obj/SHARED_LIBRARIES/libamffmpeg.vendor_intermediates -I out/target/product/kvim3/gen/SHARED_LIBRARIES/libamffmpeg.vendor_intermediates \$(cat out/target/product/kvim3/obj/SHARED_LIBRARIES/libamffmpeg.vendor_intermediates/import_includes) -isystem out/target/product/kvim3/obj/include -c -fomit-frame-pointer -DANDROID -fmessage-length=0 -W -Wall -Wno-unused -Winit-self -Wpointer-arith -no-canonical-prefixes -DNDEBUG -UDEBUG -fno-exceptions -Wno-multichar -O2 -g -fno-strict-aliasing -fdebug-prefix-map=/proc/self/cwd= -D__compiler_offsetof=__builtin_offsetof -Werror=int-conversion -Wno-reserved-id-macro -Wno-format-pedantic -Wno-unused-command-line-argument -fcolor-diagnostics -Wno-expansion-to-defined -Wno-zero-as-null-pointer-constant -fdebug-prefix-map=\$PWD/= -ffunction-sections -fdata-sections -fno-short-enums -funwind-tables -fstack-protector-strong -Wa,--noexecstack -D_FORTIFY_SOURCE=2 -Wstrict-aliasing=2 -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Werror=date-time -Werror=format-security -nostdlibinc -msoft-float -march=armv7-a -mfloat-abi=softfp -mfpu=neon -target arm-linux-androideabi -Bprebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.9/arm-linux-androideabi/bin -std=gnu99 -fstrict-aliasing -Wall -DHAVE_AV_CONFIG_H -Ivendor/amlogic/common/external/ffmpeg -Wno-error=return-type -Wno-missing-field-initializers -Wno-parentheses -Wno-pointer-sign -Wno-sign-compare -Wno-switch -fPIC -std=c99 -llvm -DDISABLE_NEONINTR -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -DFF_API_AV_GETTIME=0 -D__ANDROID_API__=28 -D__ANDROID_VNDK__ -fPIC -DARCH_ARM -D_USING_LIBCXX -DANDROID_STRICT -Werror=int-to-pointer-cast -Werror=pointer-to-int-cast -Werror=address-of-temporary -Werror=return-type -Wno-tautological-constant-compare -Wno-null-pointer-arithmetic -Wno-enum-compare -Wno-enum-compare-switch -MD -MF out/target/product/kvim3/obj/SHARED_LIBRARIES/libamffmpeg.vendor_intermediates/libavutil/../compat/strtod.d -o out/target/product/kvim3/obj/SHARED_LIBRARIES/libamffmpeg.vendor_intermediates/libavutil/../compat/strtod.o vendor/amlogic/common/external/ffmpeg/libavutil/../compat/strtod.c"
error: unable to open output file 'out/target/product/kvim3/obj/SHARED_LIBRARIES/libamffmpeg.vendor_intermediates/libavutil/../compat/strtod.o': 'No such file or directory'
1 error generated.
[ 67% 46452/69326] target arm C: libamffmpeg.vendor <= vendor/amlogic/common/external/ffmpeg/libavutil/aes.c
vendor/amlogic/common/external/ffmpeg/libavutil/aes.c:164:47: warning: unused parameter 'decrypt' [-Wunused-parameter]
int count, uint8_t *iv, int decrypt)
^
1 warning generated.
ninja: build stopped: subcommand failed.
22:14:52 ninja failed with: exit status 1
#### failed to build some targets (02:14:51 (hh:mm:ss)) ####
Will upload full log later.