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Build: Build Userland with -O2, Kernel with -Os

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For some reason I don't yet understand, building the kernel with -O2
produces a way-too-large kernel on some people's systems.

Since there are some really nice performance benefits from -O2 in
userspace, let's do a compromise and build Userland with -O2 but
put Kernel back into the -Os box for now.
This commit is contained in:
Andreas Kling 2021-02-24 11:30:19 +01:00
parent 0817ea01c2
commit f27eb315fc
Notes: sideshowbarker 2024-07-18 21:58:16 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/f27eb315fc6
3 changed files with 5 additions and 1 deletions
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2
CMakeLists.txt
View file

@ -153,7 +153,7 @@ set(CMAKE_CXX_LINK_FLAGS "-Wl,--hash-style=gnu,-z,relro,-z,now")
# This will need to be revisited when the Loader supports RPATH/RUN_PATH.
set(CMAKE_SKIP_RPATH TRUE)
add_compile_options(-O2 -g1 -fno-exceptions -fstack-protector-strong -Wno-address-of-packed-member -Wundef -Wcast-qual -Wwrite-strings -Wimplicit-fallthrough -Wno-nonnull-compare -Wno-deprecated-copy -Wno-expansion-to-defined)
add_compile_options(-g1 -fno-exceptions -fstack-protector-strong -Wno-address-of-packed-member -Wundef -Wcast-qual -Wwrite-strings -Wimplicit-fallthrough -Wno-nonnull-compare -Wno-deprecated-copy -Wno-expansion-to-defined)
add_compile_options(-ffile-prefix-map=${CMAKE_SOURCE_DIR}=.)
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")

2
Kernel/CMakeLists.txt
View file

@ -1,3 +1,5 @@
add_compile_options(-Os)
set(KERNEL_HEAP_SOURCES
Heap/SlabAllocator.cpp
Heap/kmalloc.cpp

2
Userland/CMakeLists.txt
View file

@ -1,3 +1,5 @@
add_compile_options(-O2)
add_subdirectory(Applications)
add_subdirectory(Demos)
add_subdirectory(DevTools)