Missing -lgnutls in linker options

[RoelVdP]

~/pquery$ cmake . -DMARIADB=ON -DBASEDIR=/test/MD180223-mariadb-11.0.1-linux-x86_64-opt
...
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.2.11") 
-- * BASEDIR is set, looking for MariaDB in /test/MD180223-mariadb-11.0.1-linux-x86_64-opt
-- * Found MariaDB library: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a
-- * Found MariaDB include directory: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/include/mysql
-- * PQuery revision is: ba1ec63
-- Configuring done
...
# (all works fine). Then:

~/pquery$ make
CMake Deprecation Warning at CMakeLists.txt:1 (CMAKE_MINIMUM_REQUIRED):
  Compatibility with CMake < 2.8.12 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.


-- Architecture is x86_64
-- * BASEDIR is set, looking for MariaDB in /test/MD180223-mariadb-11.0.1-linux-x86_64-opt
-- * PQuery revision is: ba1ec63
-- Configuring done
-- Generating done
-- Build files have been written to: ~/pquery-source
[ 12%] Building C object src/third_party/inih++/lib/CMakeFiles/inih++.dir/ini.c.o
[ 25%] Building CXX object src/third_party/inih++/lib/CMakeFiles/inih++.dir/INIReader.cpp.o
[ 37%] Linking CXX static library libinih++.a
[ 37%] Built target inih++
[ 50%] Building CXX object src/CMakeFiles/pquery2-md.dir/pquery.cpp.o
[ 62%] Building CXX object src/CMakeFiles/pquery2-md.dir/help.cpp.o
[ 75%] Building CXX object src/CMakeFiles/pquery2-md.dir/node.cpp.o
[ 87%] Building CXX object src/CMakeFiles/pquery2-md.dir/thread.cpp.o
[100%] Linking CXX executable pquery2-md
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `my_verify_callback':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1356: undefined reference to `gnutls_session_get_ptr'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1364: undefined reference to `gnutls_certificate_verify_peers3'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1381: undefined reference to `gnutls_certificate_type_get'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1382: undefined reference to `gnutls_certificate_verification_status_print'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1385: undefined reference to `gnutls_free'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1367: undefined reference to `gnutls_certificate_verify_peers2'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_set_error':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:896: undefined reference to `gnutls_strerror'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:888: undefined reference to `gnutls_alert_get'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:889: undefined reference to `gnutls_alert_get_name'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `get_priority':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:855: undefined reference to `gnutls_cipher_suite_info'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_gnutls_set_ciphers':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1043: undefined reference to `gnutls_priority_set_direct'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1029: undefined reference to `gnutls_priority_set_direct'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `get_priority':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:860: undefined reference to `gnutls_kx_get_name'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:860: undefined reference to `gnutls_mac_get_name'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:860: undefined reference to `gnutls_cipher_get_name'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_start':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:948: undefined reference to `gnutls_global_init'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:953: undefined reference to `gnutls_check_version'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_get_error':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:918: undefined reference to `gnutls_strerror'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_end':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:980: undefined reference to `gnutls_global_deinit'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_init':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1117: undefined reference to `gnutls_certificate_allocate_credentials'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_set_certs':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1054: undefined reference to `gnutls_certificate_set_x509_trust_file'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1063: undefined reference to `gnutls_certificate_set_x509_trust_dir'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1072: undefined reference to `gnutls_certificate_set_x509_crl_file'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1085: undefined reference to `gnutls_certificate_set_verify_function'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1099: undefined reference to `gnutls_certificate_set_x509_key_file2'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_init':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1123: undefined reference to `gnutls_init'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1126: undefined reference to `gnutls_session_set_ptr'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1136: undefined reference to `gnutls_credentials_set'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1143: undefined reference to `gnutls_certificate_free_credentials'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1145: undefined reference to `gnutls_deinit'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_set_certs':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1080: undefined reference to `gnutls_certificate_set_x509_system_trust'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_write_async':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1232: undefined reference to `gnutls_record_send'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_read_async':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1257: undefined reference to `gnutls_record_recv'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_read':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1277: undefined reference to `gnutls_record_recv'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1285: undefined reference to `gnutls_session_get_ptr'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_write':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1296: undefined reference to `gnutls_record_send'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1304: undefined reference to `gnutls_session_get_ptr'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_close':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1320: undefined reference to `gnutls_credentials_get'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1321: undefined reference to `gnutls_certificate_free_keys'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1322: undefined reference to `gnutls_certificate_free_cas'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1323: undefined reference to `gnutls_certificate_free_crls'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1324: undefined reference to `gnutls_certificate_free_ca_names'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1325: undefined reference to `gnutls_certificate_free_credentials'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1326: undefined reference to `gnutls_deinit'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_connect':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1176: undefined reference to `gnutls_session_get_ptr'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1198: undefined reference to `gnutls_transport_set_int2'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1203: undefined reference to `gnutls_error_is_fatal'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1202: undefined reference to `gnutls_handshake'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_get_cipher':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1347: undefined reference to `gnutls_mac_get'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1348: undefined reference to `gnutls_cipher_get'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1349: undefined reference to `gnutls_kx_get'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `openssl_cipher_name':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:809: undefined reference to `gnutls_cipher_suite_info'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_get_finger_print':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1404: undefined reference to `gnutls_session_get_ptr'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1406: undefined reference to `gnutls_certificate_get_peers'
/usr/bin/ld: /test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1415: undefined reference to `gnutls_fingerprint'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_get_protocol_version':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1431: undefined reference to `gnutls_protocol_get_version'
/usr/bin/ld: /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a(gnutls.c.o): in function `ma_tls_set_connection':
/test/11.0_opt/libmariadb/libmariadb/secure/gnutls.c:1436: undefined reference to `gnutls_session_set_ptr'
collect2: error: ld returned 1 exit status
make[2]: *** [src/CMakeFiles/pquery2-md.dir/build.make:147: src/pquery2-md] Error 1
make[1]: *** [CMakeFiles/Makefile2:145: src/CMakeFiles/pquery2-md.dir/all] Error 2
make: *** [Makefile:156: all] Error 2

The following will then make the build proceed correctly:

~/pquery-source/src$ cmake -E env LDFLAGS="-I/usr/include/p11-kit-1 -lgnutls" /usr/bin/c++ -O3 -DNDEBUG -rdynamic CMakeFiles/pquery2-md.dir/pquery.cpp.o CMakeFiles/pquery2-md.dir/help.cpp.o CMakeFiles/pquery2-md.dir/node.cpp.o CMakeFiles/pquery2-md.dir/thread.cpp.o -o pquery2-md  /test/MD180223-mariadb-11.0.1-linux-x86_64-opt/lib/libmysqlclient.a -lresolv -lssl -lcrypto -lgnutls  -lpthread -lz -ldl -lrt third_party/inih++/lib/libinih++.a 

This is basically a copy of the contents of CMakeFiles/pquery2-md.dir/link.txt with only -lgnutls added.

The following two line patch fixes the issue:

--- a/cmake/PQSetupCompiler.cmake
+++ b/cmake/PQSetupCompiler.cmake
@@ -61,6 +61,8 @@ SET (OTHER_LIBS ${OTHER_LIBS} pthread)
 INCLUDE(FindZLIB REQUIRED)
 SET (OTHER_LIBS ${OTHER_LIBS} z)
 #
+INCLUDE(FindGnuTLS REQUIRED)
+SET(OTHER_LIBS ${OTHER_LIBS} gnutls)
 #
 IF(CMAKE_SYSTEM_NAME STREQUAL "Linux")
   SET (OTHER_LIBS ${OTHER_LIBS} dl rt)

Please add this to the repo source asap. Thank you.