It's my first time on Windows and I'm trying to compile the Mysql++ library by using mingw32. I've downloaded the tarball archive and then I run the command mingw32-make -f Makefile.mingw as specified in the documentation, but I get different undefined reference errors. This same library works fine on Ubuntu and I had no problems during the building.

I installed the MySQL Connector C 6.1 as requested and its path is C:Program FilesMySQLMySQL Connector C 6.1.

mysql++-3.2.5\mysql++-3.2.5>mingw32-make.exe -f Makefile.mingw
g++ -shared -fPIC -o mysqlpp.dll mysqlpp_beemutex.o mysqlpp_cmdline.o mysqlpp_connection.o mysqlpp_cpool.o mysqlpp_datetime.o mysqlpp_dbdriver.o mysqlpp_field_names.o mysqlpp_field_types.o mysqlpp_manip.o mysqlpp_myset.o mysqlpp_mysql++.o mysqlpp_mystring.o mysqlpp_null.o mysqlpp_options.o mysqlpp_qparms.o mysqlpp_query.o mysqlpp_result.o mysqlpp_row.o mysqlpp_scopedconnection.o mysqlpp_sql_buffer.o mysqlpp_sqlstream.o mysqlpp_ssqls2.o mysqlpp_stadapter.o mysqlpp_tcp_connection.o mysqlpp_transaction.o mysqlpp_type_info.o mysqlpp_uds_connection.o mysqlpp_utility.o mysqlpp_vallist.o mysqlpp_wnp_connection.o  -Wl,--out-implib=libmysqlpp.a -g -mthreads -Wl,--enable-stdcall-fixup -L"C:\Program Files\MySQL\MySQL Connector C 6.1\lib"   -lwsock32 -lmysql
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZNK7mysqlpp8DBDriver14client_versionB5cxx11Ev':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:97: undefined reference to `mysql_get_client_info@0'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZN7mysqlpp8DBDriver5errorEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:185: undefined reference to `mysql_error@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZN7mysqlpp8DBDriver6errnumEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:192: undefined reference to `mysql_errno@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZN7mysqlpp8DBDriver8ipc_infoB5cxx11Ev':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:366: undefined reference to `mysql_get_host_info@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZN7mysqlpp8DBDriver4killEm':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:395: undefined reference to `mysql_kill@8'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZN7mysqlpp8DBDriver4pingEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:466: undefined reference to `mysql_ping@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZN7mysqlpp8DBDriver16protocol_versionEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:476: undefined reference to `mysql_get_proto_info@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZN7mysqlpp8DBDriver9select_dbEPKc':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:512: undefined reference to `mysql_select_db@8'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZN7mysqlpp8DBDriver14server_versionB5cxx11Ev':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:521: undefined reference to `mysql_get_server_info@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZN7mysqlpp8DBDriver13server_statusB5cxx11Ev':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:597: undefined reference to `mysql_stat@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZN7mysqlpp8DBDriver10thread_endEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:633: undefined reference to `mysql_thread_end@0'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZN7mysqlpp8DBDriver9thread_idEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:644: undefined reference to `mysql_thread_id@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_connection.o: in function `ZN7mysqlpp8DBDriver12thread_startEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:668: undefined reference to `mysql_thread_init@0'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_dbdriver.o: in function `ZN7mysqlpp8DBDriver7connectEPKcS2_jS2_S2_S2_':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.cpp:76: undefined reference to `mysql_real_connect@32'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_dbdriver.o: in function `ZN7mysqlpp8DBDriver7connectERK8st_mysql':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.cpp:86: undefined reference to `mysql_real_connect@32'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_dbdriver.o: in function `ZN7mysqlpp8DBDriver15connect_prepareEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.cpp:102: undefined reference to `mysql_init@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_dbdriver.o: in function `ZN7mysqlpp8DBDriver10disconnectEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.cpp:137: undefined reference to `mysql_close@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_dbdriver.o: in function `ZN7mysqlpp8DBDriver10enable_sslEPKcS2_S2_S2_S2_':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.cpp:151: undefined reference to `mysql_ssl_set@24'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_dbdriver.o: in function `ZN7mysqlpp8DBDriver10query_infoB5cxx11Ev':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.cpp:237: undefined reference to `mysql_info@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_dbdriver.o: in function `ZN7mysqlpp8DBDriver8shutdownEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.cpp:343: undefined reference to `mysql_shutdown@8'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_dbdriver.o: in function `ZN7mysqlpp8DBDriver12thread_awareEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.cpp:357: undefined reference to `mysql_thread_safe@0'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_dbdriver.o: in function `ZN7mysqlpp8DBDriver13escape_stringEPcPKcj':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:214: undefined reference to `mysql_real_escape_string@16'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_dbdriver.o: in function `ZN7mysqlpp8DBDriver21escape_string_no_connEPcPKcj':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:269: undefined reference to `mysql_escape_string@12'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_options.o: in function `ZN7mysqlpp8DBDriver10set_optionE12mysql_optionPKv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:540: undefined reference to `mysql_options@12'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_options.o: in function `ZN7mysqlpp8DBDriver10set_optionE21enum_mysql_set_option':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:551: undefined reference to `mysql_set_server_option@8'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_query.o: in function `ZNK7mysqlpp26RefCountedPointerDestroyerI12st_mysql_resEclEPS1_':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/result.h:287: undefined reference to `mysql_free_result@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_query.o: in function `ZN7mysqlpp8DBDriver13affected_rowsEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:88: undefined reference to `mysql_affected_rows@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_query.o: in function `ZN7mysqlpp8DBDriver7executeEPKcj':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:287: undefined reference to `mysql_real_query@12'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_query.o: in function `ZN7mysqlpp8DBDriver9insert_idEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:382: undefined reference to `mysql_insert_id@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_query.o: in function `ZN7mysqlpp8DBDriver12more_resultsEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:406: undefined reference to `mysql_more_results@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_query.o: in function `ZN7mysqlpp8DBDriver11next_resultEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:425: undefined reference to `mysql_next_result@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_query.o: in function `ZN7mysqlpp8DBDriver12result_emptyEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:505: undefined reference to `mysql_field_count@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_query.o: in function `ZN7mysqlpp8DBDriver12store_resultEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:610: undefined reference to `mysql_store_result@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_query.o: in function `ZN7mysqlpp8DBDriver10use_resultEv':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:684: undefined reference to `mysql_use_result@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_result.o: in function `ZNK7mysqlpp8DBDriver9fetch_rowEP12st_mysql_res':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:301: undefined reference to `mysql_fetch_row@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_result.o: in function `ZNK7mysqlpp8DBDriver13fetch_lengthsEP12st_mysql_res':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:311: undefined reference to `mysql_fetch_lengths@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_result.o: in function `ZNK7mysqlpp8DBDriver11fetch_fieldEP12st_mysql_resj':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:330: undefined reference to `mysql_fetch_field@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:331: undefined reference to `mysql_fetch_field_direct@8'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_result.o: in function `ZNK7mysqlpp8DBDriver10field_seekEP12st_mysql_resj':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:341: undefined reference to `mysql_field_seek@8'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_result.o: in function `ZNK7mysqlpp8DBDriver11free_resultEP12st_mysql_res':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:350: undefined reference to `mysql_free_result@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_result.o: in function `ZNK7mysqlpp8DBDriver10num_fieldsEP12st_mysql_res':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:441: undefined reference to `mysql_num_fields@4'
    c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: mysqlpp_result.o: in function `ZNK7mysqlpp8DBDriver8num_rowsEP12st_mysql_res':
    C:\Users\39328\Downloads\mysql++-3.2.5\mysql++-3.2.5/lib/dbdriver.h:450: undefined reference to `mysql_num_rows@4'
    collect2.exe: error: ld returned 1 exit status
    Makefile.mingw:361: recipe for target 'mysqlpp.dll' failed
    mingw32-make.exe: *** [mysqlpp.dll] Error 1

How can I solve this error?

This typically means you've got a mismatch in the word sizes between the shipped *.def file and the MySQL C API DLL you're using on that machine.

Complicating the problem is that 64-bit MinGW always has this difference relative to 32-bit MinGW, so no matter what, the def file contents will always be wrong for one of them.

There may be a way to make MinGW's linker link to the DLL directly instead of via an import library, but you'd need to pursue that yourself. MinGW is not a primary development platform for MySQL++.

Alternately, you can take that hint and give MinGW a miss. Your other three major options on Windows — Visual C++, Cygwin, and WSL — are not going to have these problems.

Thank you for your reply. I tried to switch to Visual Studio, so I installed Microsoft Visual Studio 2017, v15.9.5 and I opened the file contained in the folder vc2008. It asked me to upgrade the project in order to continue to open the files. After that, I tried to build the solution, but I received the folllowing errors.

Why this happen? Is there any way to solve it?

Thank you.

1>------ Rebuild All started: Project: mysqlpp, Configuration: Release x64 ------
1>beemutex.cpp
1>cmdline.cpp
1>connection.cpp
1>cpool.cpp
1>datetime.cpp
1>dbdriver.cpp
1>field_names.cpp
1>field_types.cpp
1>manip.cpp
1>myset.cpp
1>mysql++.cpp
1>mystring.cpp
1>null.cpp
1>options.cpp
1>qparms.cpp
1>query.cpp
1>result.cpp
1>row.cpp
1>scopedconnection.cpp
1>sqlstream.cpp
1>sql_buffer.cpp
1>ssqls2.cpp
1>stadapter.cpp
1>tcp_connection.cpp
1>transaction.cpp
1>type_info.cpp
1>uds_connection.cpp
1>utility.cpp
1>vallist.cpp
1>wnp_connection.cpp
1>   Creating library x64\Release\mysqlpp.lib and object x64\Release\mysqlpp.exp
1>mysql++_mysqlpp.vcxproj -> C:\mysql++-3.2.5\vc2008\x64\Release\mysqlpp.dll
2>------ Rebuild All started: Project: ssqls2parse, Configuration: Release x64 ------
3>------ Rebuild All started: Project: excommon, Configuration: Release x64 ------
4>------ Rebuild All started: Project: test_array_index, Configuration: Release x64 ------
5>------ Rebuild All started: Project: test_cpool, Configuration: Release x64 ------
6>------ Rebuild All started: Project: test_datetime, Configuration: Release x64 ------
7>------ Rebuild All started: Project: test_inttypes, Configuration: Release x64 ------
8>------ Rebuild All started: Project: test_insertpolicy, Configuration: Release x64 ------
9>------ Rebuild All started: Project: test_manip, Configuration: Release x64 ------
10>------ Rebuild All started: Project: test_null_comparison, Configuration: Release x64 ------
11>------ Rebuild All started: Project: test_query_copy, Configuration: Release x64 ------
12>------ Rebuild All started: Project: test_qssqls, Configuration: Release x64 ------
13>------ Rebuild All started: Project: test_qstream, Configuration: Release x64 ------
3>printdata.cpp
2>parsev2.cpp
5>cpool.cpp
4>array_index.cpp
7>inttypes.cpp
6>datetime.cpp
9>manip.cpp
8>insertpolicy.cpp
12>qssqls.cpp
10>null_comparison.cpp
11>query_copy.cpp
13>qstream.cpp
7>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
5>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
5>Done building project "mysql++_test_cpool.vcxproj" -- FAILED.
7>Done building project "mysql++_test_inttypes.vcxproj" -- FAILED.
14>------ Rebuild All started: Project: test_sqlstream, Configuration: Release x64 ------
15>------ Rebuild All started: Project: test_string, Configuration: Release x64 ------
14>sqlstream.cpp
15>string.cpp
3>C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppBuild.targets(1397,5): warning MSB8012: TargetPath(C:\mysql++-3.2.5\vc2008\x64\Release\excommon.lib) does not match the Library's OutputFile property value (C:\mysql++-3.2.5\vc2008\x64\Release\mysqlpp_excommon.lib). This may cause your project to build incorrectly. To correct this, please make sure that $(OutDir), $(TargetName) and $(TargetExt) property values match the value specified in %(Lib.OutputFile).
8>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
3>C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppBuild.targets(1399,5): warning MSB8012: TargetName(excommon) does not match the Library's OutputFile property value (mysqlpp_excommon). This may cause your project to build incorrectly. To correct this, please make sure that $(OutDir), $(TargetName) and $(TargetExt) property values match the value specified in %(Lib.OutputFile).
8>Done building project "mysql++_test_insertpolicy.vcxproj" -- FAILED.
16>------ Rebuild All started: Project: test_tcp, Configuration: Release x64 ------
3>mysql++_excommon.vcxproj -> C:\mysql++-3.2.5\vc2008\x64\Release\excommon.lib
6>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
3>Done building project "mysql++_excommon.vcxproj".
17>------ Rebuild All started: Project: test_uds, Configuration: Release x64 ------
6>Done building project "mysql++_test_datetime.vcxproj" -- FAILED.
18>------ Rebuild All started: Project: test_wnp, Configuration: Release x64 ------
10>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
10>Done building project "mysql++_test_null_comparison.vcxproj" -- FAILED.
11>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
11>Done building project "mysql++_test_query_copy.vcxproj" -- FAILED.
19>------ Rebuild All started: Project: cgi_jpeg, Configuration: Release x64 ------
20>------ Rebuild All started: Project: cpool, Configuration: Release x64 ------
16>tcp.cpp
9>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
9>Done building project "mysql++_test_manip.vcxproj" -- FAILED.
13>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
21>------ Rebuild All started: Project: dbinfo, Configuration: Release x64 ------
13>Done building project "mysql++_test_qstream.vcxproj" -- FAILED.
22>------ Rebuild All started: Project: deadlock, Configuration: Release x64 ------
17>uds.cpp
18>wnp.cpp
19>cgi_jpeg.cpp
12>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
12>Done building project "mysql++_test_qssqls.vcxproj" -- FAILED.
23>------ Rebuild All started: Project: fieldinf, Configuration: Release x64 ------
20>cpool.cpp
21>dbinfo.cpp
22>deadlock.cpp
23>fieldinf.cpp
16>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
16>Done building project "mysql++_test_tcp.vcxproj" -- FAILED.
24>------ Rebuild All started: Project: for_each, Configuration: Release x64 ------
17>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
17>Done building project "mysql++_test_uds.vcxproj" -- FAILED.
25>------ Rebuild All started: Project: load_jpeg, Configuration: Release x64 ------
2>C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppBuild.targets(1397,5): warning MSB8012: TargetPath(C:\mysql++-3.2.5\vc2008\x64\Release\ssqls2parse.lib) does not match the Library's OutputFile property value (C:\mysql++-3.2.5\vc2008\x64\Release\mysqlpp_ssqls2parse.lib). This may cause your project to build incorrectly. To correct this, please make sure that $(OutDir), $(TargetName) and $(TargetExt) property values match the value specified in %(Lib.OutputFile).
2>C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.CppBuild.targets(1399,5): warning MSB8012: TargetName(ssqls2parse) does not match the Library's OutputFile property value (mysqlpp_ssqls2parse). This may cause your project to build incorrectly. To correct this, please make sure that $(OutDir), $(TargetName) and $(TargetExt) property values match the value specified in %(Lib.OutputFile).
24>for_each.cpp
25>load_jpeg.cpp
2>mysql++_ssqls2parse.vcxproj -> C:\mysql++-3.2.5\vc2008\x64\Release\ssqls2parse.lib
4>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
4>Done building project "mysql++_test_array_index.vcxproj" -- FAILED.
26>------ Rebuild All started: Project: multiquery, Configuration: Release x64 ------
15>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
15>Done building project "mysql++_test_string.vcxproj" -- FAILED.
2>Done building project "mysql++_ssqls2parse.vcxproj".
27>------ Rebuild All started: Project: resetdb, Configuration: Release x64 ------
28>------ Rebuild All started: Project: ssqlsxlat, Configuration: Release x64 ------
14>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
14>Done building project "mysql++_test_sqlstream.vcxproj" -- FAILED.
29>------ Rebuild All started: Project: test_ssqls2, Configuration: Release x64 ------
26>multiquery.cpp
27>resetdb.cpp
18>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
18>Done building project "mysql++_test_wnp.vcxproj" -- FAILED.
30>------ Rebuild All started: Project: simple1, Configuration: Release x64 ------
28>genv2.cpp
28>main.cpp
19>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
19>Done building project "mysql++_cgi_jpeg.vcxproj" -- FAILED.
31>------ Rebuild All started: Project: simple2, Configuration: Release x64 ------
20>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
22>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
20>Done building project "mysql++_cpool.vcxproj" -- FAILED.
32>------ Rebuild All started: Project: simple3, Configuration: Release x64 ------
22>Done building project "mysql++_deadlock.vcxproj" -- FAILED.
29>ssqls2.cpp
33>------ Rebuild All started: Project: ssqls1, Configuration: Release x64 ------
30>simple1.cpp
23>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
21>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
21>Done building project "mysql++_dbinfo.vcxproj" -- FAILED.
34>------ Rebuild All started: Project: ssqls2, Configuration: Release x64 ------
23>Done building project "mysql++_fieldinf.vcxproj" -- FAILED.
35>------ Rebuild All started: Project: ssqls3, Configuration: Release x64 ------
31>simple2.cpp
32>simple3.cpp
33>ssqls1.cpp
35>ssqls3.cpp
34>ssqls2.cpp
26>c:\mysql++-3.2.5\examples\multiquery.cpp(101): warning C4267: 'argument': conversion from 'size_t' to 'unsigned int', possible loss of data
26>c:\mysql++-3.2.5\examples\multiquery.cpp(102): warning C4267: 'argument': conversion from 'size_t' to 'int', possible loss of data
24>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
24>Done building project "mysql++_for_each.vcxproj" -- FAILED.
36>------ Rebuild All started: Project: ssqls4, Configuration: Release x64 ------
28>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
28>Done building project "mysql++_ssqlsxlat.vcxproj" -- FAILED.
37>------ Rebuild All started: Project: ssqls5, Configuration: Release x64 ------
25>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
25>Done building project "mysql++_load_jpeg.vcxproj" -- FAILED.
38>------ Rebuild All started: Project: ssqls6, Configuration: Release x64 ------
36>ssqls4.cpp
37>ssqls5.cpp
38>ssqls6.cpp
26>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
26>Done building project "mysql++_multiquery.vcxproj" -- FAILED.
39>------ Rebuild All started: Project: store_if, Configuration: Release x64 ------
30>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
39>store_if.cpp
31>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
29>LINK : fatal error LNK1181: cannot open input file 'mysqlpp.lib'
31>Done building project "mysql++_simple2.vcxproj" -- FAILED.
40>------ Rebuild All started: Project: tquery1, Configuration: Release x64 ------
30>Done building project "mysql++_simple1.vcxproj" -- FAILED.
29>Done building project "mysql++_test_ssqls2.vcxproj" -- FAILED.
41>------ Rebuild All started: Project: tquery2, Configuration: Release x64 ------
42>------ Rebuild All started: Project: tquery3, Configuration: Release x64 ------
32>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
32>Done building project "mysql++_simple3.vcxproj" -- FAILED.
43>------ Rebuild All started: Project: tquery4, Configuration: Release x64 ------
40>tquery1.cpp
42>tquery3.cpp
41>tquery2.cpp
33>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
33>Done building project "mysql++_ssqls1.vcxproj" -- FAILED.
44>------ Rebuild All started: Project: transaction, Configuration: Release x64 ------
43>tquery4.cpp
44>transaction.cpp
35>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
35>Done building project "mysql++_ssqls3.vcxproj" -- FAILED.
36>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
36>Done building project "mysql++_ssqls4.vcxproj" -- FAILED.
27>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
27>Done building project "mysql++_resetdb.vcxproj" -- FAILED.
37>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
38>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
37>Done building project "mysql++_ssqls5.vcxproj" -- FAILED.
38>Done building project "mysql++_ssqls6.vcxproj" -- FAILED.
39>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
40>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
42>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
39>Done building project "mysql++_store_if.vcxproj" -- FAILED.
40>Done building project "mysql++_tquery1.vcxproj" -- FAILED.
42>Done building project "mysql++_tquery3.vcxproj" -- FAILED.
41>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
41>Done building project "mysql++_tquery2.vcxproj" -- FAILED.
43>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
43>Done building project "mysql++_tquery4.vcxproj" -- FAILED.
34>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
34>Done building project "mysql++_ssqls2.vcxproj" -- FAILED.
44>LINK : fatal error LNK1181: cannot open input file 'mysqlpp_excommon.lib'
44>Done building project "mysql++_transaction.vcxproj" -- FAILED.
========== Rebuild All: 3 succeeded, 41 failed, 0 skipped ==========

I really appreciate your help! Thank you a lot, I was able to successfully compile the libray under VS 2017. I changed the path as it was expecting and I got no errors.

I'm able to correctly compile programs and examples under Visual Studio, but I always receive errors when I try to compile it by using Codeblocks (mingw). I thought that I could compile the code by using mingw and the compiled libraries, but I was wrong.

It always gives me this errors:

-------------- Build: Debug in Pump (compiler: GNU GCC Compiler)---------------

mingw32-g++.exe -LC:\wxWidgets-3.1.3\lib\gcc_dll -L..\..\..\..\..\wxWidgets-3.1.3\lib -L..\..\..\..\..\MinGW\lib -L..\..\..\..\..\mysql++-3.2.5\vc2008\x64\Release -L"..\..\..\..\..\Program Files\MySQL\MySQL Connector C 6.1\lib" -o bin\Debug\Pump.exe obj\Debug\firstpanel.o obj\Debug\Page1Scrolled.o obj\Debug\PumpApp.o obj\Debug\PumpMain.o  obj\Debug\resource.res -mthreads  ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxbase31u.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxbase31u_net.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxbase31u_xml.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxexpat.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxjpeg.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxmsw31u_adv.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxmsw31u_aui.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxmsw31u_core.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxmsw31u_gl.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxmsw31u_html.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxmsw31u_media.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxmsw31u_propgrid.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxmsw31u_ribbon.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxmsw31u_richtext.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxmsw31u_stc.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxmsw31u_webview.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxmsw31u_xrc.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxpng.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxregex.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxregexu.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxscintilla.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxtiff.a ..\..\..\..\..\wxWidgets-3.1.3\lib\gcc_dll\libwxzlib.a ..\..\..\..\..\MinGW\lib\libmysql.a ..\..\..\..\..\mysql++-3.2.5\vc2008\x64\Release\mysqlpp.lib ..\..\..\..\..\mysql++-3.2.5\vc2008\x64\Release\mysqlpp_excommon.lib ..\..\..\..\..\mysql++-3.2.5\vc2008\x64\Release\mysqlpp_ssqls2parse.lib "..\..\..\..\..\Program Files\MySQL\MySQL Connector C 6.1\lib\libmysql.lib"
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: obj\Debug\Page1Scrolled.o: in function `ZN13Page1ScrolledC2EP8wxWindowP9PumpFrameiRK7wxPointRK6wxSize':
C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:241: undefined reference to `_imp___ZN7mysqlpp10ConnectionC1Eb'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:242: undefined reference to `_imp___ZN7mysqlpp10Connection7connectEPKcS2_S2_S2_j'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:245: undefined reference to `_imp___ZN7mysqlpp10Connection5queryEPKc'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:246: undefined reference to `_imp___ZN7mysqlpp5Query5storeEv'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:260: undefined reference to `_imp___ZNK7mysqlpp3RowixEPKc'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:260: undefined reference to `_imp___ZN7mysqlpplsERSoRKNS_6StringE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:261: undefined reference to `_imp___ZNK7mysqlpp3RowixEPKc'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:261: undefined reference to `_imp___ZN7mysqlpplsERSoRKNS_6StringE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:262: undefined reference to `_imp___ZNK7mysqlpp3RowixEPKc'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:262: undefined reference to `_imp___ZN7mysqlpplsERSoRKNS_6StringE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:263: undefined reference to `_imp___ZNK7mysqlpp3RowixEPKc'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:263: undefined reference to `_imp___ZN7mysqlpplsERSoRKNS_6StringE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:264: undefined reference to `_imp___ZNK7mysqlpp3RowixEPKc'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:264: undefined reference to `_imp___ZN7mysqlpplsERSoRKNS_6StringE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:269: undefined reference to `_imp___ZNK7mysqlpp5Query5errorEv'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:274: undefined reference to `_imp___ZNK7mysqlpp10Connection5errorEv'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:241: undefined reference to `_imp___ZN7mysqlpp10ConnectionD1Ev'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: C:/Users/39328/Documents/Codeblocks/Pump/Page1Scrolled.cpp:241: undefined reference to `_imp___ZN7mysqlpp10ConnectionD1Ev'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: obj\Debug\Page1Scrolled.o: in function `ZN7mysqlpp18OptionalExceptionsD2Ev':
c:/mysql++-3.2.5/lib/noexceptions.h:83: undefined reference to `_imp___ZTVN7mysqlpp18OptionalExceptionsE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: obj\Debug\Page1Scrolled.o: in function `ZN7mysqlpp18OptionalExceptionsD1Ev':
c:/mysql++-3.2.5/lib/noexceptions.h:83: undefined reference to `_imp___ZTVN7mysqlpp18OptionalExceptionsE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: obj\Debug\Page1Scrolled.o: in function `ZN7mysqlpp10ResultBaseD2Ev':
c:/mysql++-3.2.5/lib/result.h:114: undefined reference to `_imp___ZTVN7mysqlpp10ResultBaseE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: obj\Debug\Page1Scrolled.o: in function `ZN7mysqlpp10ResultBaseD1Ev':
c:/mysql++-3.2.5/lib/result.h:114: undefined reference to `_imp___ZTVN7mysqlpp10ResultBaseE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: obj\Debug\Page1Scrolled.o: in function `ZN7mysqlpp16StoreQueryResultD1Ev':
c:/mysql++-3.2.5/lib/result.h:244: undefined reference to `_imp___ZTVN7mysqlpp16StoreQueryResultE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: obj\Debug\Page1Scrolled.o: in function `ZN7mysqlpp5QueryD1Ev':
c:/mysql++-3.2.5/lib/query.h:121: undefined reference to `_imp___ZTVN7mysqlpp5QueryE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: c:/mysql++-3.2.5/lib/query.h:121: undefined reference to `_imp___ZTVN7mysqlpp5QueryE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: c:/mysql++-3.2.5/lib/query.h:121: undefined reference to `_imp___ZTVN7mysqlpp5QueryE'
c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: c:/mysql++-3.2.5/lib/query.h:121: undefined reference to `_imp___ZTTN7mysqlpp5QueryE'
collect2.exe: error: ld returned 1 exit status
Process terminated with status 1 (0 minute(s), 0 second(s))
28 error(s), 0 warning(s) (0 minute(s), 0 second(s))

I thought that I could compile the code by using mingw and the compiled libraries, but I was wrong.

You cannot use a library compiled by one C++ compiler with any sufficiently different C++ compiler.