Commit Graph

4 Commits

Author SHA1 Message Date
Robert Schulze
1a7727a254
Prefix overridden add_executable() command with "clickhouse_"
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/
2022-07-11 19:36:18 +02:00
Nikolai Kochetov
da45d55e22 Remove DataStreams folder. 2021-10-15 23:18:37 +03:00
Nikolai Kochetov
c6bce1a4cf Update Native. 2021-10-08 20:21:19 +03:00
BohuTANG
c31f4f013a Add MergeTree Write-Ahead-Log(WAL) dump tool 2020-08-12 13:50:22 +08:00