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build: enable ccache by default if available (#22020)

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Initial benchmarks show that this gives a nice 50% compile time
reduction for neovim. This shouldn't affect users or CI, but it's a nice
speedup for local development. The C_COMPILER_LAUNCHER target property
is only supported by Makefiles and Ninja generators only, so this won't
give a speedup when using the Xcode and Visual Studio generators even if
ccache is available.
This commit is contained in:
dundargoc
2023-01-28 00:42:13 +01:00
committed by GitHub
parent 2cde6a18b5
commit 881d4adb59
2 changed files with 12 additions and 0 deletions
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5
CONTRIBUTING.md
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@@ -42,6 +42,11 @@ Developer guidelines
make distclean make distclean
make # Nvim build system uses ninja automatically, if available. make # Nvim build system uses ninja automatically, if available.
``` ```
- Install `ccache` for faster rebuilds of Nvim. Nvim will use it automatically
if it's found. To disable caching use:
```
CCACHE_DISABLE=true make
```
Pull requests (PRs) Pull requests (PRs)
--------------------- ---------------------

7
src/nvim/CMakeLists.txt
View File

@@ -688,6 +688,13 @@ set_target_properties(nvim
EXPORT_COMPILE_COMMANDS ON EXPORT_COMPILE_COMMANDS ON
ENABLE_EXPORTS TRUE) ENABLE_EXPORTS TRUE)
find_program(CCACHE_PRG ccache)
if(CCACHE_PRG)
set_target_properties(nvim
PROPERTIES
C_COMPILER_LAUNCHER "${CMAKE_COMMAND};-E;env;CCACHE_SLOPPINESS=pch_defines,time_macros;${CCACHE_PRG}")
endif()
if(${CMAKE_VERSION} VERSION_LESS 3.20) if(${CMAKE_VERSION} VERSION_LESS 3.20)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON) set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
endif() endif()