compile of v1.1.0 fails with "invalid covariant return type"

[Dominic Froud]

Hello,

I'm trying to compile v1.1.0 from trunk rev 786 on FreeBSD 7.1 amd64 using g++ v4.2.1 and boost v1.34.1

"cmake ." runs okay but when I run make I get this:

puma# make
[ 0%] Building CXX object driver/CMakeFiles/mysqlcppconn.dir/mysql_art_resultset.cpp.o
In file included from /root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.cpp:17:
/root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.h:178: error: invalid covariant return type for 'virtual sql::SQLString sql::mysql::MySQL_ArtResultSet::getString(uint32_t) const'
/usr/local/include/cppconn/resultset.h:102: error: overriding 'virtual std::string sql::ResultSet::getString(uint32_t) const'
/usr/local/include/cppconn/resultset.h:71: warning: 'virtual uint32_t sql::ResultSet::findColumn(const std::string&) const' was hidden
/root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.h:127: warning: by 'uint32_t sql::mysql::MySQL_ArtResultSet::findColumn(const sql::SQLString&) const'
/usr/local/include/cppconn/resultset.h:76: warning: 'virtual std::istream* sql::ResultSet::getBlob(const std::string&) const' was hidden
/root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.h:133: warning: by 'sql::mysql::MySQL_ArtResultSet::getBlob'
/usr/local/include/cppconn/resultset.h:79: warning: 'virtual bool sql::ResultSet::getBoolean(const std::string&) const' was hidden
/root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.h:137: warning: by 'sql::mysql::MySQL_ArtResultSet::getBoolean'
/usr/local/include/cppconn/resultset.h:82: warning: 'virtual long double sql::ResultSet::getDouble(const std::string&) const' was hidden
/root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.h:146: warning: by 'sql::mysql::MySQL_ArtResultSet::getDouble'
/usr/local/include/cppconn/resultset.h:85: warning: 'virtual int32_t sql::ResultSet::getInt(const std::string&) const' was hidden
/root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.h:154: warning: by 'sql::mysql::MySQL_ArtResultSet::getInt'
/usr/local/include/cppconn/resultset.h:88: warning: 'virtual uint32_t sql::ResultSet::getUInt(const std::string&) const' was hidden
/root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.h:158: warning: by 'sql::mysql::MySQL_ArtResultSet::getUInt'
/usr/local/include/cppconn/resultset.h:91: warning: 'virtual int64_t sql::ResultSet::getInt64(const std::string&) const' was hidden
/root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.h:162: warning: by 'sql::mysql::MySQL_ArtResultSet::getInt64'
/usr/local/include/cppconn/resultset.h:94: warning: 'virtual uint64_t sql::ResultSet::getUInt64(const std::string&) const' was hidden
/root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.h:166: warning: by 'sql::mysql::MySQL_ArtResultSet::getUInt64'
/usr/local/include/cppconn/resultset.h:103: warning: 'virtual std::string sql::ResultSet::getString(const std::string&) const' was hidden
/root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.h:180: warning: by 'sql::mysql::MySQL_ArtResultSet::getString'
/usr/local/include/cppconn/resultset.h:118: warning: 'virtual bool sql::ResultSet::isNull(const std::string&) const' was hidden
/root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.h:201: warning: by 'sql::mysql::MySQL_ArtResultSet::isNull'
In file included from /root/mysql-connector-cpp/trunk/driver/mysql_art_resultset.cpp:18:
/root/mysql-connector-cpp/trunk/driver/mysql_art_rset_metadata.h:36: error: invalid covariant return type for 'virtual sql::SQLString sql::mysql::MySQL_ArtResultSetMetaData::getCatalogName(unsigned int)'
/usr/local/include/cppconn/resultset_metadata.h:31: error: overriding 'virtual std::string sql::ResultSetMetaData::getCatalogName(unsigned int)'
/root/mysql-connector-cpp/trunk/driver/mysql_art_rset_metadata.h:42: error: invalid covariant return type for 'virtual sql::SQLString sql::mysql::MySQL_ArtResultSetMetaData::getColumnLabel(unsigned int)'
/usr/local/include/cppconn/resultset_metadata.h:37: error: overriding 'virtual std::string sql::ResultSetMetaData::getColumnLabel(unsigned int)'
/root/mysql-connector-cpp/trunk/driver/mysql_art_rset_metadata.h:44: error: invalid covariant return type for 'virtual sql::SQLString sql::mysql::MySQL_ArtResultSetMetaData::getColumnName(unsigned int)'
/usr/local/include/cppconn/resultset_metadata.h:39: error: overriding 'virtual std::string sql::ResultSetMetaData::getColumnName(unsigned int)'
/root/mysql-connector-cpp/trunk/driver/mysql_art_rset_metadata.h:48: error: invalid covariant return type for 'virtual sql::SQLString sql::mysql::MySQL_ArtResultSetMetaData::getColumnTypeName(unsigned int)'
/usr/local/include/cppconn/resultset_metadata.h:43: error: overriding 'virtual std::string sql::ResultSetMetaData::getColumnTypeName(unsigned int)'
/root/mysql-connector-cpp/trunk/driver/mysql_art_rset_metadata.h:54: error: invalid covariant return type for 'virtual sql::SQLString sql::mysql::MySQL_ArtResultSetMetaData::getSchemaName(unsigned int)'
/usr/local/include/cppconn/resultset_metadata.h:49: error: overriding 'virtual std::string sql::ResultSetMetaData::getSchemaName(unsigned int)'
/root/mysql-connector-cpp/trunk/driver/mysql_art_rset_metadata.h:56: error: invalid covariant return type for 'virtual sql::SQLString sql::mysql::MySQL_ArtResultSetMetaData::getTableName(unsigned int)'
/usr/local/include/cppconn/resultset_metadata.h:51: error: overriding 'virtual std::string sql::ResultSetMetaData::getTableName(unsigned int)'
*** Error code 1

Stop in /root/mysql-connector-cpp/trunk.
*** Error code 1

Stop in /root/mysql-connector-cpp/trunk.
*** Error code 1

Stop in /root/mysql-connector-cpp/trunk.
puma#


Any ideas?

Thanks,

Dominic