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few description fixes

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This commit is contained in:
myrrc 2020-09-16 12:42:55 +03:00
parent 42b22c3424
commit b3d236a535
3 changed files with 30 additions and 22 deletions
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10
CMakeLists.txt
View File

@ -116,9 +116,8 @@ if (USE_STATIC_LIBRARIES)
list(REVERSE CMAKE_FIND_LIBRARY_SUFFIXES)
endif ()
# Enable fuzzy testing using libfuzzer
# Implies ${WITH_COVERAGE}
option (ENABLE_FUZZING "Enables fuzzing instrumentation")
option (ENABLE_FUZZING "Enable fuzzy testing using libfuzzer")
if (ENABLE_FUZZING)
message (STATUS "Fuzzing instrumentation enabled")
@ -150,8 +149,7 @@ if (COMPILER_CLANG)
endif ()
endif ()
# Adds a Google.Test target binary containing unit tests.
option (ENABLE_TESTS ON)
option(ENABLE_TESTS "Provide unit_test_dbms target with Google.test unit tests" ON)
if (OS_LINUX AND NOT UNBUNDLED AND MAKE_STATIC_LIBRARIES AND NOT SPLIT_SHARED_LIBRARIES AND CMAKE_VERSION VERSION_GREATER "3.9.0")
# Only for Linux, x86_64.
@ -251,7 +249,7 @@ if (COMPILER_GCC OR COMPILER_CLANG)
endif ()
# Compiler-specific coverage flags e.g. -fcoverage-mapping for gcc
option(WITH_COVERAGE)
option(WITH_COVERAGE "Profile the resulting binary/binaries")
if (WITH_COVERAGE AND COMPILER_CLANG)
set(COMPILER_FLAGS "${COMPILER_FLAGS} -fprofile-instr-generate -fcoverage-mapping")
@ -385,7 +383,7 @@ else ()
endif ()
# https://github.com/include-what-you-use/include-what-you-use
option (USE_INCLUDE_WHAT_YOU_USE OFF)
option (USE_INCLUDE_WHAT_YOU_USE "Automatically reduce unneeded includes in source code (external tool)" OFF)
if (USE_INCLUDE_WHAT_YOU_USE)
find_program(IWYU_PATH NAMES include-what-you-use iwyu)

22
cmake_files_footer.md
View File

@ -8,25 +8,31 @@ Bad:
option (ENABLE_TESTS "Enables testing" OFF)
```
This description is quite useless as is neither gives the viewer any additional information nor explains the option
purpose. If the option's name is quite self-descriptive, prefer the empty description.
This description is quite useless as is neither gives the viewer any additional information nor explains the option purpose.
Better:
```cmake
option(ENABLE_TESTS OFF)
option(ENABLE_TESTS "Provide unit_test_dbms target with Google.test unit tests" OFF)
```
If the option's purpose can't be guessed by its name, or the purpose guess may be misleading, leave a comment above
the `option()` line and explain what it does. The best way would be linking the docs page (if it exists).
If the option's purpose can't be guessed by its name, or the purpose guess may be misleading, or option has some
pre-conditions, leave a comment above the `option()` line and explain what it does.
The best way would be linking the docs page (if it exists).
The comment is parsed into a separate column (see below).
Even better (default off value is omitted):
Even better:
```cmake
# Adds the ability to test ClickHouse using Google.Test (would produce another target unit_tests_dbms).
# implies ${TESTS_ARE_ENABLED}
# see tests/CMakeLists.txt for implementation detail.
option(ENABLE_GTEST_TESTS)
option(ENABLE_TESTS "Provide unit_test_dbms target with Google.test unit tests")
```
Note that the default value (`OFF`) can be omitted if you provide a description, e.g.
```
option(MYOPTION "My description")
```
### If the option's state could produce unwanted (or unusual) result, explicitly warn the user.

20
cmake_flags_and_output.md
View File

@ -77,7 +77,7 @@ TODO describe separate cmake files for contrib + arch-dependent ones + options f
| <a name="split-shared-libraries"></a>[`SPLIT_SHARED_LIBRARIES`](https://github.com/clickhouse/clickhouse/blob/master/CMakeLists.txt#L100) | `OFF` | Keep all internal libraries as separate .so files | DEVELOPER ONLY.. Faster linking if turned on.. |
| <a name="strip-debug-symbols-functions"></a>[`STRIP_DEBUG_SYMBOLS_FUNCTIONS`](https://github.com/clickhouse/clickhouse/blob/master/src/Functions/CMakeLists.txt#L67) | [`STRIP_DSF_DEFAULT`](#strip-dsf-default) | Do not generate debugger info for ClickHouse functions | Provides faster linking and lower binary size.. Tradeoff is the inability to debug some source files with e.g. gdb. (empty stack frames and no local variables).". |
| <a name="unbundled"></a>[`UNBUNDLED`](https://github.com/clickhouse/clickhouse/blob/master/CMakeLists.txt#L155) | `OFF` | Use system libraries instead of ones in contrib/ | |
| <a name="use-include-what-you-use"></a>[`USE_INCLUDE_WHAT_YOU_USE`](https://github.com/clickhouse/clickhouse/blob/master/CMakeLists.txt#L387) | `OFF` | | https://github.com/include-what-you-use/include-what-you-use. |
| <a name="use-include-what-you-use"></a>[`USE_INCLUDE_WHAT_YOU_USE`](https://github.com/clickhouse/clickhouse/blob/master/CMakeLists.txt#L387) | `OFF` | Automatically reduce unneeded includes in source code (external tool) | https://github.com/include-what-you-use/include-what-you-use. |
| <a name="use-internal-avro-library"></a>[`USE_INTERNAL_AVRO_LIBRARY`](https://github.com/clickhouse/clickhouse/blob/master/cmake/find/avro.cmake#L3) | `ON` | Set to FALSE to use system avro library instead of bundled | |
| <a name="use-internal-aws-s-library"></a>[`USE_INTERNAL_AWS_S3_LIBRARY`](https://github.com/clickhouse/clickhouse/blob/master/cmake/find/s3.cmake#L2) | `ON` | Set to FALSE to use system S3 instead of bundled (experimental set to OFF on your own risk) | |
| <a name="use-internal-brotli-library"></a>[`USE_INTERNAL_BROTLI_LIBRARY`](https://github.com/clickhouse/clickhouse/blob/master/cmake/find/brotli.cmake#L3) | `ON` | Set to FALSE to use system libbrotli library instead of bundled | |
@ -117,7 +117,7 @@ TODO describe separate cmake files for contrib + arch-dependent ones + options f
| <a name="use-unwind"></a>[`USE_UNWIND`](https://github.com/clickhouse/clickhouse/blob/master/cmake/find/unwind.cmake#L0) | [`ENABLE_LIBRARIES`](#enable-libraries) | Enable libunwind (better stacktraces) | |
| <a name="werror"></a>[`WERROR`](https://github.com/clickhouse/clickhouse/blob/master/CMakeLists.txt#L342) | `ON` | Enable -Werror compiler option | Using system libs can cause a lot of warnings in includes (on macro expansion).. |
| <a name="weverything"></a>[`WEVERYTHING`](https://github.com/clickhouse/clickhouse/blob/master/cmake/warnings.cmake#L20) | `ON` | Enables -Weverything option with some exceptions. This is intended for exploration of new compiler warnings that may be found to be useful. Only makes sense for clang. | |
| <a name="with-coverage"></a>[`WITH_COVERAGE`](https://github.com/clickhouse/clickhouse/blob/master/CMakeLists.txt#L119) | `OFF` | | Enable fuzzy testing using libfuzzer. |
| <a name="with-coverage"></a>[`WITH_COVERAGE`](https://github.com/clickhouse/clickhouse/blob/master/CMakeLists.txt#L119) | `OFF` | Profile the resulting binary/binaries | Enable fuzzy testing using libfuzzer. |
## Developer's guide for adding new CMake options
@ -128,25 +128,29 @@ Bad:
option (ENABLE_TESTS "Enables testing" OFF)
```
This description is quite useless as is neither gives the viewer any additional information nor explains the option
purpose. If the option's name is quite self-descriptive, prefer the empty description.
This description is quite useless as is neither gives the viewer any additional information nor explains the option purpose.
Better:
```cmake
option(ENABLE_TESTS OFF)
option(ENABLE_TESTS "Provide unit_test_dbms target with Google.test unit tests" OFF)
```
If the option's purpose can't be guessed by its name, or the purpose guess may be misleading, leave a comment above
the `option()` line and explain what it does. The best way would be linking the docs page (if it exists).
The comment is parsed into a separate column (see below).
Even better (default off value is omitted):
Even better:
```cmake
# Adds the ability to test ClickHouse using Google.Test (would produce another target unit_tests_dbms).
# see tests/CMakeLists.txt for implementation detail.
option(ENABLE_GTEST_TESTS)
option(ENABLE_TESTS "Provide unit_test_dbms target with Google.test unit tests")
```
Note that the default value (`OFF`) can be omitted if you provide a description, e.g.
```
option(MYOPTION "My description")
```
### If the option's state could produce unwanted (or unusual) result, explicitly warn the user.