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Kernel: Specify -fno-pic when using -mcmodel=large

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According to the gcc man page these are mutually exclusive and did
in fact cause problems when trying to get the address for asm labels
on x86_64.
This commit is contained in:
Gunnar Beutner 2021-06-26 06:28:50 +02:00 • committed by Andreas Kling
parent b9f6b40651
commit 787f80d114
1 changed files with 4 additions and 2 deletions
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6
Kernel/CMakeLists.txt
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@ -348,7 +348,7 @@ set(SOURCES
)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-warning-option -Wvla -Wnull-dereference")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pie -fPIE -fno-rtti -ffreestanding -fbuiltin")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti -ffreestanding -fbuiltin")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mno-80387 -mno-mmx -mno-sse -mno-sse2")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-asynchronous-unwind-tables")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fstack-protector-strong")
@ -357,7 +357,9 @@ if (NOT ${CMAKE_HOST_SYSTEM_NAME} MATCHES SerenityOS)
endif()
if ("${SERENITY_ARCH}" STREQUAL "x86_64")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcmodel=large -mno-red-zone -z max-page-size=0x1000")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcmodel=large -fno-pic -mno-red-zone -z max-page-size=0x1000")
else()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pie -fPIE")
endif()
# Kernel Undefined Behavior Sanitizer (KUBSAN)