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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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| .. | ||
| examples | ||
| fuzzers | ||
| MySQL | ||
| PostgreSQL | ||
| tests | ||
| AccurateComparison.h | ||
| BackgroundSchedulePool.cpp | ||
| BackgroundSchedulePool.h | ||
| BaseSettings.cpp | ||
| BaseSettings.h | ||
| Block.cpp | ||
| Block.h | ||
| BlockInfo.cpp | ||
| BlockInfo.h | ||
| callOnTypeIndex.h | ||
| CMakeLists.txt | ||
| ColumnNumbers.h | ||
| ColumnsWithTypeAndName.h | ||
| ColumnWithTypeAndName.cpp | ||
| ColumnWithTypeAndName.h | ||
| config_core.h.in | ||
| DecimalComparison.h | ||
| DecimalFunctions.h | ||
| Defines.h | ||
| ExternalResultDescription.cpp | ||
| ExternalResultDescription.h | ||
| ExternalTable.cpp | ||
| ExternalTable.h | ||
| Field.cpp | ||
| Field.h | ||
| InterpolateDescription.cpp | ||
| InterpolateDescription.h | ||
| iostream_debug_helpers.cpp | ||
| iostream_debug_helpers.h | ||
| MultiEnum.h | ||
| Names.h | ||
| NamesAndAliases.h | ||
| NamesAndTypes.cpp | ||
| NamesAndTypes.h | ||
| PostgreSQLProtocol.cpp | ||
| PostgreSQLProtocol.h | ||
| Protocol.h | ||
| ProtocolDefines.h | ||
| QualifiedTableName.h | ||
| QueryProcessingStage.cpp | ||
| QueryProcessingStage.h | ||
| ServerUUID.cpp | ||
| ServerUUID.h | ||
| Settings.cpp | ||
| Settings.h | ||
| SettingsEnums.cpp | ||
| SettingsEnums.h | ||
| SettingsFields.cpp | ||
| SettingsFields.h | ||
| SettingsQuirks.cpp | ||
| SettingsQuirks.h | ||
| SortCursor.h | ||
| SortDescription.cpp | ||
| SortDescription.h | ||
| TypeId.h | ||
| Types.h | ||
| UUID.cpp | ||
| UUID.h | ||