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Set some flags only for our own code

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This commit is contained in:
ISSOtm
2026-04-13 21:43:07 +02:00
committed by Eldred Habert
parent a802bcb320
commit e6916360f4
1 changed files with 32 additions and 31 deletions
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CMakeLists.txt
+32 -31
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@@ -33,31 +33,18 @@ endif()
include(CTest) # Note: CTest only functions properly if included from the top-level CMakeLists.
include(GNUInstallDirs)
## Compiler switches.
include(CMakeDependentOption)
## Compiler switches that should apply to our deps too.
option(SANITIZERS "Build with sanitizers enabled" OFF)
cmake_dependent_option(MORE_WARNINGS "Turn on more warnings" OFF "NOT MSVC" OFF)
if(MSVC)
add_compile_options(
/wd5030 # Warning C5030 is about unknown attributes (`[[gnu::ATTR]]`), none of ours being load-bearing.
/wd4996 # Warning C4996 is about using POSIX names, which we want to do for portability.
/Zc:preprocessor # Opt into the C++20-conformant preprocessor.
)
add_definitions(/D_CRT_SECURE_NO_WARNINGS)
if(SANITIZERS)
if(SANITIZERS)
if(MSVC)
message(STATUS "ASan enabled")
add_compile_options(/fsanitize=address) # Note that this shouldn't be passed to the linker.
endif()
else()
add_compile_options(-Wall -pedantic -fno-exceptions $<$<COMPILE_LANGUAGE:CXX>:-fno-rtti> -Wno-unknown-warning-option
# C++20 allows macros to take zero variadic arguments.
# Some versions of Clang don't recognize this, and treat them as a GNU extension.
-Wno-gnu-zero-variadic-macro-arguments)
if(SANITIZERS)
else() # We assume a GNU-like compiler.
message(STATUS "ASan and UBSan enabled")
set(SAN_FLAGS -fsanitize=address -fsanitize=undefined
-fsanitize=float-divide-by-zero)
@@ -69,18 +56,6 @@ else()
# 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()
if(MORE_WARNINGS)
add_compile_options(-Werror -Wextra
-Walloc-zero -Wcast-align -Wcast-qual -Wduplicated-branches -Wduplicated-cond
-Wfloat-equal -Wlogical-op -Wnull-dereference -Wold-style-cast -Wshift-overflow=2
-Wstringop-overflow=4 -Wtrampolines -Wundef -Wuninitialized -Wunused -Wshadow
-Wformat=2 -Wformat-overflow=2 -Wformat-truncation=1
-Wno-format-nonliteral -Wno-strict-overflow
-Wno-unused-but-set-variable # bison's `yynerrs_` is incremented but unused
-Wno-type-limits -Wno-tautological-constant-out-of-range-compare
-Wvla) # MSVC does not support VLAs
endif()
endif()
message(CHECK_START "Checking if LTO is supported")
@@ -164,6 +139,32 @@ include_directories("include")
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED True)
if(MSVC)
add_compile_options(
/wd5030 # Warning C5030 is about unknown attributes (`[[gnu::ATTR]]`), none of ours being load-bearing.
/wd4996 # Warning C4996 is about using POSIX names, which we want to do for portability.
/Zc:preprocessor # Opt into the C++20-conformant preprocessor.
)
add_definitions(/D_CRT_SECURE_NO_WARNINGS)
else()
add_compile_options(-Wall -pedantic -fno-exceptions -fno-rtti -Wno-unknown-warning-option
# C++20 allows macros to take zero variadic arguments.
# Some versions of Clang don't recognize this, and treat them as a GNU extension.
-Wno-gnu-zero-variadic-macro-arguments)
if(MORE_WARNINGS)
add_compile_options(-Werror -Wextra
-Walloc-zero -Wcast-align -Wcast-qual -Wduplicated-branches -Wduplicated-cond
-Wfloat-equal -Wlogical-op -Wnull-dereference -Wold-style-cast -Wshift-overflow=2
-Wstringop-overflow=4 -Wtrampolines -Wundef -Wuninitialized -Wunused -Wshadow
-Wformat=2 -Wformat-overflow=2 -Wformat-truncation=1
-Wno-format-nonliteral -Wno-strict-overflow
-Wno-unused-but-set-variable # bison's `yynerrs_` is incremented but unused
-Wno-type-limits -Wno-tautological-constant-out-of-range-compare
-Wvla) # MSVC does not support VLAs
endif()
endif()
add_subdirectory(src)
if(BUILD_TESTING) # This option is defined implicitly by `include(CTest)`.
add_subdirectory(test)