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LibM: Fix linking with LibM when compiling Userland without -O2

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While playing with conditionally disabling -O2 optimization when
building the Userland subdirectory, I discovered that we can no longer
link errors without -O2. This happens as LibM.so doesn't link to
anything else, resulting in no stack protector implementation. It
appears that optimization somehow avoids this problem?

To fix this inject LibC/ssp.cpp as we do with in dynamic loader.
This commit is contained in:
Brian Gianforcaro 2021-05-23 01:04:26 -07:00 committed by Linus Groh
parent d23425bfc0
commit e706de8f91
Notes: sideshowbarker 2024-07-18 17:29:42 +09:00 
Author: https://github.com/bgianfo
Commit: https://github.com/SerenityOS/serenity/commit/e706de8f91d
Pull-request: https://github.com/SerenityOS/serenity/pull/7405
Issue: https://github.com/SerenityOS/serenity/issues/5862
1 changed files with 3 additions and 0 deletions
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3
Userland/Libraries/LibM/CMakeLists.txt
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@ -1,7 +1,10 @@
set(SOURCES
math.cpp
../LibC/ssp.cpp
)
set_source_files_properties (../LibC/ssp.cpp PROPERTIES COMPILE_FLAGS
"-fno-stack-protector")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nostdlib")
serenity_libc(LibM m)