Tensorflow-lite with Flex Delegates build fails for aarch64 source architecture using TF2.7

[OAHLSTM]

System information

• Have I written custom code (as opposed to using a stock example script provided in TensorFlow): No
• OS Platform and Distribution (e.g., Linux Ubuntu 16.04): Linux 583dc6ac55ff 5.4.144+
• Mobile device (e.g. iPhone 8, Pixel 2, Samsung Galaxy) if the issue happens on mobile device: No
• TensorFlow installed from (source or binary): Source
• TensorFlow version (use command below): 2.7.0
• Python version: 3.7.12
• Bazel version (if compiling from source): 3.7.2

Describe the current behavior
I'm trying to build a shared library for tensorflow-lite including the Flex Delegate by Modifying the BUILD to add following dependency:

"//tensorflow/lite/delegates/flex:delegate",

Since I'm targeting a Linux system running on my aarch64 board, the command I ran is the below:

bazel build --config=monolithic --config=noaws --config=nogcp --config=nohdfs \
 --config=nonccl --config=elinux_aarch64 \
 --experimental_ui_max_stdouterr_bytes=1073741819 -c opt --cxxopt=--std=c++14 \
 //tensorflow/lite:libtensorflowlite.so

I also made sure to hide my OpenSSL from my /usr/include as suggested in the following issue #48401. I noticed that the build fails at compiling icu external source code.

Describe the expected behavior
The expected behavior is a build completed successfully and a shared library libtensorflow-lite.so generated and supporting Flex Delegates with TF selected Ops.

Standalone code to reproduce the issue
Here is a Google Colab gist to reproduce the Build issue. All you need to do is to modify the tensorflow/lite/BUILD by adding the following line to the libtensorflow-lite.so deps.

"//tensorflow/lite/delegates/flex:delegate",

Other info / logs
Here is the full traceback of the error that shows in the middle of the build and makes it fail.

ERROR: /root/.cache/bazel/_bazel_root/889612a75a81b3d8b4ed860522ba4e34/external/icu/BUILD.bazel:33:11: C++ compilation of rule '@icu//:icuuc' failed (Exit 1): aarch64-linux-gnu-gcc failed: error executing command /root/.cache/bazel/_bazel_root/889612a75a81b3d8b4ed860522ba4e34/external/aarch64_linux_toolchain/bin/aarch64-linux-gnu-gcc -fstack-protector -g0 -O2 -DNDEBUG -ffunction-sections -fdata-sections ... (remaining 41 argument(s) skipped)
external/icu/icu4c/source/common/localebuilder.cpp: In member function 'icu_60::LocaleBuilder& icu_60::LocaleBuilder::setLanguageTag(icu_60::StringPiece)':
external/icu/icu4c/source/common/localebuilder.cpp:63:24: error: 'forLanguageTag' is not a member of 'icu_60::Locale'
     Locale l = Locale::forLanguageTag(tag, status_);
                        ^~~~~~~~~~~~~~
external/icu/icu4c/source/common/localebuilder.cpp: In function 'void icu_60::_copyExtensions(const icu_60::Locale&, icu_60::Locale*, bool, UErrorCode&)':
external/icu/icu4c/source/common/localebuilder.cpp:166:23: error: invalid use of incomplete type 'class icu_60::StringEnumeration'
     while ((key = iter->next(nullptr, errorCode)) != nullptr) {
                       ^~
In file included from external/icu/icu4c/source/common/unicode/uloc.h:27,
                 from external/icu/icu4c/source/common/ulocimp.h:14,
                 from external/icu/icu4c/source/common/localebuilder.cpp:9:
/usr/include/unicode/uenum.h:27:7: note: forward declaration of 'class icu_60::StringEnumeration'
 class StringEnumeration;
       ^~~~~~~~~~~~~~~~~
external/icu/icu4c/source/common/localebuilder.cpp:169:50: error: no matching function for call to 'icu_60::Locale::getKeywordValue(const char*&, icu_60::CharStringByteSink&, UErrorCode&) const'
         from.getKeywordValue(key, sink, errorCode);
                                                  ^
In file included from external/icu/icu4c/source/common/unicode/localebuilder.h:6,
                 from external/icu/icu4c/source/common/localebuilder.cpp:10:
/usr/include/unicode/locid.h:457:13: note: candidate: 'int32_t icu_60::Locale::getKeywordValue(const char*, char*, int32_t, UErrorCode&) const'
     int32_t getKeywordValue(const char* keywordName, char *buffer, int32_t bufferCapacity, UErrorCode &status) const;
             ^~~~~~~~~~~~~~~
/usr/include/unicode/locid.h:457:13: note:   candidate expects 4 arguments, 3 provided
external/icu/icu4c/source/common/localebuilder.cpp: In function 'void icu_60::_clearUAttributesAndKeyType(icu_60::Locale*, UErrorCode&)':
external/icu/icu4c/source/common/localebuilder.cpp:191:55: error: 'class icu_60::Locale' has no member named 'createUnicodeKeywords'; did you mean 'createKeywords'?
     LocalPointer<icu::StringEnumeration> iter(locale->createUnicodeKeywords(errorCode));
                                                       ^~~~~~~~~~~~~~~~~~~~~
                                                       createKeywords
external/icu/icu4c/source/common/localebuilder.cpp:194:23: error: invalid use of incomplete type 'class icu_60::StringEnumeration'
     while ((key = iter->next(nullptr, errorCode)) != nullptr) {
                       ^~
In file included from external/icu/icu4c/source/common/unicode/uloc.h:27,
                 from external/icu/icu4c/source/common/ulocimp.h:14,
                 from external/icu/icu4c/source/common/localebuilder.cpp:9:
/usr/include/unicode/uenum.h:27:7: note: forward declaration of 'class icu_60::StringEnumeration'
 class StringEnumeration;
       ^~~~~~~~~~~~~~~~~
external/icu/icu4c/source/common/localebuilder.cpp:195:17: error: 'class icu_60::Locale' has no member named 'setUnicodeKeywordValue'; did you mean 'setKeywordValue'?
         locale->setUnicodeKeywordValue(key, nullptr, errorCode);
                 ^~~~~~~~~~~~~~~~~~~~~~
                 setKeywordValue
external/icu/icu4c/source/common/localebuilder.cpp: In function 'void icu_60::_setUnicodeExtensions(icu_60::Locale*, const icu_60::CharString&, UErrorCode&)':
external/icu/icu4c/source/common/localebuilder.cpp:206:17: error: 'forLanguageTag' is not a member of 'icu_60::Locale'
         Locale::forLanguageTag(locale_str.data(), errorCode),
                 ^~~~~~~~~~~~~~
external/icu/icu4c/source/common/localebuilder.cpp: In member function 'icu_60::LocaleBuilder& icu_60::LocaleBuilder::setExtension(char, icu_60::StringPiece)':
external/icu/icu4c/source/common/localebuilder.cpp:235:45: error: no matching function for call to 'icu_60::Locale::setKeywordValue(icu_60::StringPiece, char*, UErrorCode&)'
                                      status_);
                                             ^
In file included from external/icu/icu4c/source/common/unicode/localebuilder.h:6,
                 from external/icu/icu4c/source/common/localebuilder.cpp:10:
/usr/include/unicode/locid.h:473:10: note: candidate: 'void icu_60::Locale::setKeywordValue(const char*, const char*, UErrorCode&)'
     void setKeywordValue(const char* keywordName, const char* keywordValue, UErrorCode &status);
          ^~~~~~~~~~~~~~~
/usr/include/unicode/locid.h:473:10: note:   no known conversion for argument 1 from 'icu_60::StringPiece' to 'const char*'
external/icu/icu4c/source/common/localebuilder.cpp: In member function 'icu_60::LocaleBuilder& icu_60::LocaleBuilder::setUnicodeLocaleKeyword(icu_60::StringPiece, icu_60::StringPiece)':
external/icu/icu4c/source/common/localebuilder.cpp:263:18: error: 'class icu_60::Locale' has no member named 'setUnicodeKeywordValue'; did you mean 'setKeywordValue'?
     extensions_->setUnicodeKeywordValue(key, type, status_);
                  ^~~~~~~~~~~~~~~~~~~~~~
                  setKeywordValue
external/icu/icu4c/source/common/localebuilder.cpp: In member function 'icu_60::LocaleBuilder& icu_60::LocaleBuilder::addUnicodeLocaleAttribute(icu_60::StringPiece)':
external/icu/icu4c/source/common/localebuilder.cpp:290:69: error: no matching function for call to 'icu_60::Locale::getKeywordValue(const char*&, icu_60::CharStringByteSink&, UErrorCode&)'
     extensions_->getKeywordValue(kAttributeKey, sink, localErrorCode);
                                                                     ^
In file included from external/icu/icu4c/source/common/unicode/localebuilder.h:6,
                 from external/icu/icu4c/source/common/localebuilder.cpp:10:
/usr/include/unicode/locid.h:457:13: note: candidate: 'int32_t icu_60::Locale::getKeywordValue(const char*, char*, int32_t, UErrorCode&) const'
     int32_t getKeywordValue(const char* keywordName, char *buffer, int32_t bufferCapacity, UErrorCode &status) const;
             ^~~~~~~~~~~~~~~
/usr/include/unicode/locid.h:457:13: note:   candidate expects 4 arguments, 3 provided
external/icu/icu4c/source/common/localebuilder.cpp: In member function 'icu_60::LocaleBuilder& icu_60::LocaleBuilder::removeUnicodeLocaleAttribute(icu_60::StringPiece)':
external/icu/icu4c/source/common/localebuilder.cpp:344:69: error: no matching function for call to 'icu_60::Locale::getKeywordValue(const char*&, icu_60::CharStringByteSink&, UErrorCode&)'
     extensions_->getKeywordValue(kAttributeKey, sink, localErrorCode);
                                                                     ^
In file included from external/icu/icu4c/source/common/unicode/localebuilder.h:6,
                 from external/icu/icu4c/source/common/localebuilder.cpp:10:
/usr/include/unicode/locid.h:457:13: note: candidate: 'int32_t icu_60::Locale::getKeywordValue(const char*, char*, int32_t, UErrorCode&) const'
     int32_t getKeywordValue(const char* keywordName, char *buffer, int32_t bufferCapacity, UErrorCode &status) const;
             ^~~~~~~~~~~~~~~
/usr/include/unicode/locid.h:457:13: note:   candidate expects 4 arguments, 3 provided
Target //tensorflow/lite:libtensorflowlite.so failed to build
Use --verbose_failures to see the command lines of failed build steps.
INFO: Elapsed time: 11557.297s, Critical Path: 288.22s
INFO: 5169 processes: 1657 internal, 3512 local.
FAILED: Build did NOT complete successfully

[OAHLSTM]

Hello @teijeong
Have you been able to take a look at this ?

[OAHLSTM]

Hello @teijeong @jvishnuvardhan @mohantym,
Has anyone took a look at this issue ? is it about some missing arguments ?
Thank you for your cooperation.
Othmane,

[terryheo]

I've verified the issue. Will take a look.

[mohantym]

Hi @ahlzouao ! This issue is not replicating in 2.9 with Bazel 5.0.0 and Ubuntu 18 .Attaching gist for reference. Thank you!

[google-ml-butler]

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