NDK libcurl.a - undefined reference to 'Curl_xxx'

[InfiniteStates]

I'm trying to link against the pre-built static libraries for both iOS and Android.

The iOS side is working well (thanks 👍 ) but the Android side is failing no matter what I do.

(Note - the Android sample app in the repo also fails the build with the same errors)

libcurl.a(url.o):function Curl_disconnect: error: undefined reference to 'Curl_http_ntlm_cleanup' libcurl.a(http.o):function output_auth_headers: error: undefined reference to 'Curl_output_ntlm' libcurl.a(http.o):function Curl_http_input_auth: error: undefined reference to 'Curl_auth_is_ntlm_supported' libcurl.a(http.o):function Curl_http_input_auth: error: undefined reference to 'Curl_input_ntlm' libcurl.a(http.o):function Curl_http_input_auth: error: undefined reference to 'Curl_auth_is_digest_supported' libcurl.a(http_digest.o):function Curl_input_digest: error: undefined reference to 'Curl_auth_decode_digest_http_message' libcurl.a(http_digest.o):function Curl_output_digest: error: undefined reference to 'Curl_auth_create_digest_http_message' libcurl.a(http_digest.o):function Curl_digest_cleanup: error: undefined reference to 'Curl_auth_digest_cleanup' libcurl.a(http_digest.o):function Curl_digest_cleanup: error: undefined reference to 'Curl_auth_digest_cleanup' libcurl.a(curl_sasl.o):function Curl_sasl_cleanup: error: undefined reference to 'Curl_auth_ntlm_cleanup' libcurl.a(curl_sasl.o):function Curl_sasl_start: error: undefined reference to 'Curl_auth_is_digest_supported' libcurl.a(curl_sasl.o):function Curl_sasl_start: error: undefined reference to 'Curl_auth_is_ntlm_supported' libcurl.a(curl_sasl.o):function Curl_sasl_start: error: undefined reference to 'Curl_auth_create_ntlm_type1_message' libcurl.a(curl_sasl.o):function Curl_sasl_start: error: undefined reference to 'Curl_auth_create_external_message' libcurl.a(curl_sasl.o):function Curl_sasl_start: error: undefined reference to 'Curl_auth_create_oauth_bearer_message' libcurl.a(curl_sasl.o):function Curl_sasl_start: error: undefined reference to 'Curl_auth_create_oauth_bearer_message' libcurl.a(curl_sasl.o):function Curl_sasl_start: error: undefined reference to 'Curl_auth_create_plain_message' libcurl.a(curl_sasl.o):function Curl_sasl_start: error: undefined reference to 'Curl_auth_create_login_message' libcurl.a(curl_sasl.o):function Curl_sasl_continue: error: undefined reference to 'Curl_auth_create_plain_message' libcurl.a(curl_sasl.o):function Curl_sasl_continue: error: undefined reference to 'Curl_auth_create_login_message' libcurl.a(curl_sasl.o):function Curl_sasl_continue: error: undefined reference to 'Curl_auth_create_login_message' libcurl.a(curl_sasl.o):function Curl_sasl_continue: error: undefined reference to 'Curl_auth_create_external_message' libcurl.a(curl_sasl.o):function Curl_sasl_continue: error: undefined reference to 'Curl_auth_decode_cram_md5_message' libcurl.a(curl_sasl.o):function Curl_sasl_continue: error: undefined reference to 'Curl_auth_create_cram_md5_message' libcurl.a(curl_sasl.o):function Curl_sasl_continue: error: undefined reference to 'Curl_auth_create_digest_md5_message' libcurl.a(curl_sasl.o):function Curl_sasl_continue: error: undefined reference to 'Curl_auth_create_ntlm_type1_message' libcurl.a(curl_sasl.o):function Curl_sasl_continue: error: undefined reference to 'Curl_auth_decode_ntlm_type2_message' libcurl.a(curl_sasl.o):function Curl_sasl_continue: error: undefined reference to 'Curl_auth_create_ntlm_type3_message' libcurl.a(curl_sasl.o):function Curl_sasl_continue: error: undefined reference to 'Curl_auth_create_oauth_bearer_message' libcurl.a(curl_sasl.o):function Curl_sasl_continue: error: undefined reference to 'Curl_auth_create_oauth_bearer_message'

Is there an additional library I need to be linking against?

I'm using Android Studio 2.2.1 and have tried building against NDKs r10e and r13...

[jsuppe]

I am having the same issue, using ndk-r10e

[YjyJeff]

I am having the same issue when I execute the android test, the ndk version is 13.0.3315539 , and the android studio version is 2.2.
I tried to use this lib in Cmake, here is my CMakeLists.txt:
cmake_minimum_required(VERSION 3.4.1) add_library( native-lib SHARED src/main/cpp/native-lib.cpp ) find_library( log-lib log ) include_directories(/home/yjy/tools/curl-android-ios/curl/include/) target_link_libraries( native-lib ${log-lib} /home/yjy/tools/curl-android-ios/prebuilt-with-ssl/android/mips64/libcurl.a)
However, I got the same issues.
How can I solve it ? Thanks in advance !

[MarcelKlammer]

Same here. No luck whatever I try.

[MarcelKlammer]

The changes in the pull request helped with this problem.

[InfiniteStates]

Did you manage to link against the library successfully then?

[MarcelKlammer]

I applied the provided patch (only 4 lines to change) to the curl.mk file.

My goal was to create library that uses curl internally.

So before building my lib I put (only need x86 and armeabi-v7a for my Adobe AIR native extension):

###############################

#libcurl.a

include $(CLEAR_VARS)

LOCAL_MODULE := curl_static

ifeq ($(TARGET_ARCH_ABI), $(filter $(TARGET_ARCH_ABI), x86))
LOCAL_SRC_FILES := path/to/curl-android-ios/prebuilt-with-ssl/android/x86/libcurl.a
endif

ifeq ($(TARGET_ARCH_ABI), $(filter $(TARGET_ARCH_ABI), armeabi-v7a))
LOCAL_SRC_FILES := path/to/curl-android-ios/prebuilt-with-ssl/android/armeabi-v7a/libcurl.a
endif

ifeq ($(TARGET_ARCH_ABI),armeabi)
LOCAL_SRC_FILES := path/to/curl-android-ios/prebuilt-with-ssl/android/armeabi/libcurl.a
endif

LOCAL_EXPORT_C_INCLUDES := path/to/curl-android-ios/prebuilt-with-ssl/android/include
LOCAL_C_INCLUDES := path/to/curl-android-ios/prebuilt-with-ssl/android/include

include $(PREBUILT_STATIC_LIBRARY)

###############################

Then for my lib I set:

LOCAL_STATIC_LIBRARIES := curl_static

Cheers
Marcel

[jsuppe]

I was able to apply the changes from pull request #27 and was able to compile and then link libcurl.a to my project for armeabi-v7a and arm64-v8a successfully.

For my purposes I had used android-ndk-r10e and had changed the TARGET variable in the script to use android-21.

[InfiniteStates]

Awesome, thanks guys - yep, until PR 27 gets merged in, this will get you up and running again on the Android side :)

git pull origin pull/27/head

[winster]

Great! Pull 27 worked! Wondering why is it not merged to master!!