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Meta: Add an option to precompile some very common AK headers

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Until we get the goodness that C++ modules are supposed to be, let's try
to shave off some parse time using precompiled headers.
This commit only adds some very common AK headers, only to binaries,
libraries and the kernel (tests are not covered due to incompatibility
with AK/TestSuite.h).
This option is on by default, but can be disabled by passing
`-DPRECOMPILE_COMMON_HEADERS=OFF` to cmake, which will disable all
header precompilations.
This makes the build about 30 seconds faster on my machine (about 7%).
This commit is contained in:
Ali Mohammad Pur 2021-04-21 15:45:52 +04:30 • committed by Linus Groh
parent c4f682606a
commit 468ac11f29
5 changed files with 63 additions and 0 deletions
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CMakeLists.txt
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@ -26,6 +26,7 @@ option(ENABLE_ALL_THE_DEBUG_MACROS "Enable all debug macros to validate they sti
option(ENABLE_COMPILETIME_FORMAT_CHECK "Enable compiletime format string checks" ON)
option(ENABLE_PCI_IDS_DOWNLOAD "Enable download of the pci.ids database at build time" ON)
option(BUILD_LAGOM "Build parts of the system targeting the host OS for fuzzing/testing" OFF)
option(PRECOMPILE_COMMON_HEADERS "Precompile some common headers to speedup compilation" ON)
add_custom_target(run
COMMAND ${CMAKE_SOURCE_DIR}/Meta/run.sh