Error compiling mosquitto with OpenSSL 1.1.1

[acode-x]

Hi,

I am currently using OpenSSL 1.1.1 with extended support. I noticed that the recent changes in PR #3050 always compiles mosquitto with OpenSSL 1.1.0, regardless of the available version.

OS: Ubuntu / Alpine Linux
Mosquitto versions: 2.0.19 and 2.0.20

Could you please help with same.

Thanks!

[ralight]

Thanks for the report. What errors do you get when compiling? The PR you reference just sets the API compatibility level. There aren't checks in the openssl source or headers that would be impacted by increasing the API compatibility level to 1.1.1, so I don't know what could be happening.

[acode-x]

Hi @ralight ,

Sorry the late response. Sharing my compilation code. Same code was working fine till 2.0.18 mosquitto version.

export CFLAGS='-D_FORTIFY_SOURCE=2 -fstack-protector-strong -fPIC'
export CXXFLAGS=${CFLAGS}
export LDFLAGS='-Wl,-z,now'
export CC=/aarch64-linux-musl-cross/bin/aarch64-linux-musl-gcc
export CXX=/aarch64-linux-musl-cross/bin/aarch64-linux-musl-g++

cmake \
 -DCMAKE_BUILD_TYPE=Release \
 -DWITH_TLS=ON \
 -DWITH_STATIC_LIBRARIES=OFF \
 -DWITH_SHARED_LIBRARIES=ON \
 -DWITH_SRV=OFF \
 -DWITH_WEBSOCKETS=OFF \
 -DDOCUMENTATION=OFF \
 -DWITH_BUNDLED_DEPS=ON \
 -DCMAKE_INSTALL_PREFIX=/usr/local ..

-- The C compiler identification is GNU 10.2.1
-- The CXX compiler identification is GNU 10.2.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /aarch64-linux-musl-cross/bin/aarch64-linux-musl-gcc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /aarch64-linux-musl-cross/bin/aarch64-linux-musl-g++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenSSL: /usr/local/lib/libcrypto.so (found version "1.1.1z")  
-- WITH_DLT = OFF
-- Could NOT find cJSON (missing: CJSON_INCLUDE_DIR CJSON_LIBRARY) 
-- Optional dependency cJSON not found. Some features will be disabled.
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE  
-- Looking for getaddrinfo_a in anl
-- Looking for getaddrinfo_a in anl - not found
-- Configuring done (1.0s)
-- Generating done (0.1s)
CMake Warning:
  Manually-specified variables were not used by the project:

    WITH_SHARED_LIBRARIES


make -j 40 install
[  1%] Building C object plugins/message-timestamp/CMakeFiles/mosquitto_message_timestamp.dir/mosquitto_message_timestamp.c.o
[  2%] Building C object plugins/payload-modification/CMakeFiles/mosquitto_payload_modification.dir/mosquitto_payload_modification.c.o
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/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: warning: libssl.so.1.1, needed by ../lib/libmosquitto.so.2.0.20, not found (try using -rpath or -rpath-link)
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: warning: libcrypto.so.1.1, needed by ../lib/libmosquitto.so.2.0.20, not found (try using -rpath or -rpath-link)
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `ENGINE_finish@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OCSP_response_status_str@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `X509_NAME_get_text_by_NID@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `BIO_new_socket@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `GENERAL_NAME_free@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_in_init@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_set_psk_client_callback@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `UI_create_method@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OCSP_basic_verify@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_free@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_up_ref@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `UI_method_set_reader@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `ENGINE_init@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `ENGINE_set_default@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OCSP_cert_status_str@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `ERR_get_error@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `UI_method_set_closer@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `ASN1_STRING_get0_data@OPENSSL_1_1_0'
�[0m�[91m/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_shutdown@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `UI_method_set_writer@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `X509_STORE_CTX_get_ex_data@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_new@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `TLS_client_method@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_set_cipher_list@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `X509_get_subject_name@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OPENSSL_sk_num@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OPENSSL_init_crypto@OPENSSL_1_1_0�[0m�[91m'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `ENGINE_by_id@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `UI_destroy_method@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_set_alpn_protos@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_use_PrivateKey@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: �[0m�[91m../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_ctrl@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_set_default_verify_paths@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_is_init_finished@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OCSP_response_get1_basic@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `UI_method_get_reader@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `ERR_clear_error@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld�[0m�[91m: ../lib/libmosquitto.so.2.0.20: undefined reference to `X509_STORE_CTX_get_current_cert@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `UI_OpenSSL@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `X509_get_ext_d2i@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20�[0m�[91m: undefined reference to `OPENSSL_sk_value@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `ENGINE_load_private_key@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_set_connect_state@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20�[0m�[91m: undefined reference to `SSL_CTX_callback_ctrl@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `UI_method_set_opener@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OPENSSL_sk_pop_free@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `ENGINE_load_builtin_engines@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OCSP_check_validity@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `BN_free@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `X509_STORE_CTX_get_error_depth@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_get_error@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OCSP_BASICRESP_free@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OCSP_response_status@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `ERR_error_string@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OCSP_RESPONSE_free@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OCSP_crl_reason_str@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `UI_method_get_opener@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `d2i_OCSP_RESPONSE@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_set_default_passwd_cb_userdata@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `ENGINE_free@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `CONF_modules_unload@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OCSP_single_get0_status@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_use_certificate_chain_file@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `ENGINE_ctrl_cmd@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OCSP_resp_get0@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `OCSP_resp_count@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_set_default_passwd_cb@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_read@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_use_PrivateKey_file@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `UI_method_get_writer@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_pending@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_free@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_set_options@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_new@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_set_bio@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `RAND_bytes@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_ctrl@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_get_cert_store@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_load_verify_locations@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_get_ex_data@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_get_peer_cert_chain@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_get_ex_data_X509_STORE_CTX_idx@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_write@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_check_private_key@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `UI_method_get_closer@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_set_ex_data@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `BN_bn2bin@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `BN_num_bits@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `BN_hex2bn@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `CRYPTO_get_ex_new_index@OPENSSL_1_1_0'
/aarch64-linux-musl-cross/bin/../lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: ../lib/libmosquitto.so.2.0.20: undefined reference to `SSL_CTX_set_verify@OPENSSL_1_1_0'
collect2: error: ld returned 1 exit status

[iparrado89]

Same issue compiling with ggc13.3, mosquitto-2.0.20 and openssl-3.0.15. However, the same configuración with mosquitto-1.6.15 it compiles correctly

[acode-x]

Hi @ralight
Did you get chance to look into same

[acode-x]

I tried to revert this change (#3044) and compilation was successful.

[acode-x]

diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 646d0ea9..73565b13 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -100,7 +100,7 @@ if (WITH_THREADING)
 	endif()
 endif()
 
-target_link_libraries(libmosquitto PRIVATE ${LIBRARIES})
+target_link_libraries(libmosquitto ${LIBRARIES})
 
 set_target_properties(libmosquitto PROPERTIES
 	OUTPUT_NAME mosquitto

Looks like problem is with linking. After adding above patch to fixes branch, am able to compile.

[ralight]

@acode-x Good work!

@iparrado89 Are you able to confirm that it works for you with that change?