Fix(cmake): fix LTO for clang

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.12)
+cmake_minimum_required(VERSION 3.13)
 
 project(co_context
         VERSION 0.9.0
@@ -7,12 +7,12 @@ project(co_context
 include(cmake/Policy.cmake NO_POLICY_SCOPE)
 
 add_library(co_context OBJECT)
-target_include_directories(co_context PUBLIC ./include)
+target_include_directories(co_context PUBLIC include)
 
 include(cmake/Option.cmake)
 include(cmake/CompileOption.cmake)
 include(cmake/Platform.cmake)
 include(cmake/Develop.cmake)
 include(cmake/Extra.cmake)
 
-add_subdirectory(./lib)
+add_subdirectory(lib)

cmake/CompileOption.cmake

@@ -14,9 +14,8 @@ if(NOT CMAKE_BUILD_TYPE)
     message(NOTICE "Setting default CMAKE_BUILD_TYPE to Release")
 endif()
 
-set(CMAKE_CXX_FLAGS_RELEASE)
 if(CMAKE_BUILD_TYPE MATCHES Release)
-    add_compile_options(-march=native)
+    target_compile_options(co_context PUBLIC -march=native)
 endif()
 
 # Get the linux kernel version to liburingcxx
@@ -35,6 +34,7 @@ unset(kernel_version)
 include(CheckIPOSupported)
 check_ipo_supported(RESULT is_support_IPO OUTPUT output_support_IPO)
 if(is_support_IPO)
+    set(CMAKE_INTERPROCEDURAL_OPTIMIZATION ON)
     set_target_properties(co_context PROPERTIES INTERPROCEDURAL_OPTIMIZATION TRUE)
 else()
     message(WARNING "IPO is not supported: ${output_support_IPO}")
@@ -61,5 +61,5 @@ find_package(Threads REQUIRED)
 target_link_libraries(co_context PRIVATE Threads::Threads)
 
 if (USE_MIMALLOC)
-    target_link_libraries(co_context PRIVATE mimalloc)
+    target_link_libraries(co_context PUBLIC mimalloc)
 endif()

cmake/Develop.cmake

@@ -11,8 +11,9 @@ if(ENABLE_SANITIZER AND NOT MSVC)
         include(${CMAKE_CURRENT_LIST_DIR}/check/check_asan.cmake)
         check_asan(HAS_ASAN)
         if(HAS_ASAN)
-            add_compile_options(-fsanitize=undefined,address,leak
-                                -fno-omit-frame-pointer)
+            target_compile_options(co_context
+                PUBLIC -fsanitize=undefined,address,leak
+                PUBLIC -fno-omit-frame-pointer)
         else()
             message(WARNING "sanitizer is no supported with current tool-chains")
         endif()
@@ -22,8 +23,9 @@ if(ENABLE_SANITIZER AND NOT MSVC)
 endif()
 
 if(ENABLE_WARNING)
-    add_compile_options(-Wall
-                        -Wextra
+    target_compile_options(co_context
+                        PRIVATE -Wall
+                        PRIVATE -Wextra
                         # -Wconversion
                         # -pedantic
                         # -Werror

cmake/Extra.cmake

@@ -18,9 +18,14 @@
 # ----------------------------------------------------------------------------
 if(ENABLE_COVERAGE_TEST)
     if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-        add_compile_options(-fprofile-arcs -ftest-coverage --coverage)
+        target_compile_options(co_context
+            PUBLIC -fprofile-arcs
+            PUBLIC -ftest-coverage
+            PUBLIC --coverage)
     else()
-        add_compile_options(-fprofile-instr-generate -fcoverage-mapping)
+        target_compile_options(co_context
+            PUBLIC -fprofile-instr-generate
+            PUBLIC -fcoverage-mapping)
     endif()
 endif()
 

cmake/Platform.cmake

@@ -6,10 +6,12 @@
 #   Clang
 # ----------------------------------------------------------------------------
 if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsized-deallocation -std=c++20")
+    target_compile_options(co_context PUBLIC -fsized-deallocation)
 endif()
 
 if(WITH_LIBCXX AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-    add_compile_options(-stdlib=libc++)
-    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stdlib=libc++ -lc++abi")
+    target_compile_options(co_context PRIVATE -stdlib=libc++)
+    target_link_options(co_context
+                        PRIVATE -stdlib=libc++
+                        PRIVATE -lc++abi)
 endif()