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1a7727a254
A simple HelloWorld program with zero includes except iostream triggers a build of ca. 2000 source files. The reason is that ClickHouse's top-level CMakeLists.txt overrides "add_executable()" to link all binaries against "clickhouse_new_delete". This links against "clickhouse_common_io", which in turn has lots of 3rd party library dependencies ... Without linking "clickhouse_new_delete", the number of compiled files for "HelloWorld" goes down to ca. 70. As an example, the self-extracting-executable needs none of its current dependencies but other programs may also benefit. In order to restore access to the original "add_executable()", the overriding version is now prefixed. There is precedence for a "clickhouse_" prefix (as opposed to "ch_"), for example "clickhouse_split_debug_symbols". In general prefixing makes sense also because overriding CMake commands relies on undocumented behavior and is considered not-so-great practice (*). (*) https://crascit.com/2018/09/14/do-not-redefine-cmake-commands/ |
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.. | ||
tests | ||
CMakeLists.txt | ||
ColumnInfoHandler.cpp | ||
ColumnInfoHandler.h | ||
getIdentifierQuote.cpp | ||
getIdentifierQuote.h | ||
HandlerFactory.cpp | ||
HandlerFactory.h | ||
IdentifierQuoteHandler.cpp | ||
IdentifierQuoteHandler.h | ||
MainHandler.cpp | ||
MainHandler.h | ||
odbc-bridge.cpp | ||
ODBCBlockInputStream.cpp | ||
ODBCBlockInputStream.h | ||
ODBCBlockOutputStream.cpp | ||
ODBCBlockOutputStream.h | ||
ODBCBridge.cpp | ||
ODBCBridge.h | ||
ODBCPooledConnectionFactory.h | ||
PingHandler.cpp | ||
PingHandler.h | ||
SchemaAllowedHandler.cpp | ||
SchemaAllowedHandler.h | ||
validateODBCConnectionString.cpp | ||
validateODBCConnectionString.h |