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Tidy up CMake sanitizer flags

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Set the flags in the build itself instead of trying to override the cache
(this was an artifact of when I didn't understand the CMake variable model),
which avoids them being duplicated on each re-configuration.

Also remove `-g`, since it's defined by the build type by default
(we leave it up to the user to choose Debug or RelWithDebInfo).
This commit is contained in:
ISSOtm
2026-03-16 23:26:45 +01:00
committed by Rangi
parent 7244b9d17e
commit fb4e08ce71
1 changed files with 4 additions and 3 deletions
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7
CMakeLists.txt
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@@ -59,9 +59,10 @@ else()
add_compile_options(${SAN_FLAGS}) add_compile_options(${SAN_FLAGS})
add_link_options(${SAN_FLAGS}) add_link_options(${SAN_FLAGS})
add_definitions(-D_GLIBCXX_ASSERTIONS -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_DEBUG) add_definitions(-D_GLIBCXX_ASSERTIONS -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_DEBUG)
# A non-zero optimization level is desired in debug mode, but allow overriding it nonetheless # A non-zero optimization level is desired even in debug mode (especially for Clang),
set(CMAKE_CXX_FLAGS_DEBUG "-g -Og -fno-omit-frame-pointer -fno-optimize-sibling-calls ${CMAKE_CXX_FLAGS_DEBUG}" # and the two codegen flags improve the sanitizers' backtraces, but we want the user to
CACHE STRING "" FORCE) # be able to override these easily so we put them first.
string(PREPEND CMAKE_CXX_FLAGS_DEBUG "-Og -fno-omit-frame-pointer -fno-optimize-sibling-calls ")
endif() endif()
if(MORE_WARNINGS) if(MORE_WARNINGS)