Gtest query after adding library

[rkadam61001]

I am new to GTest .I have adoubt regarding gtest;after adding a library,in CMakeLists.txt..I am getting the following error
main'; GTest/GTestCTCLManager/CMakeFiles/GTEST_CTCLManager.dir/src/main.cpp.o:/home/greek/Workspace_develop/fusion_rhl_8/build/../GTest/GTestCTCLManager/src/main.cpp:10: first defined here
[build] /opt/rh/gcc-toolset-11/root/usr/bin/ld: lib/libCTCLManager_Gtest.a(main.cpp.o):(.bss+0x4e3): multiple definition of __odr_asan._ZN2el14elCrashHandlerE'; GTest/GTestCTCLManager/CMakeFiles/GTEST_CTCLManager.dir/src/main.cpp.o:(.bss+0x124a0): first defined here [build] /opt/rh/gcc-toolset-11/root/usr/bin/ld: lib/libCTCLManager_Gtest.a(main.cpp.o):(.bss+0x4e4): multiple definition of __odr_asan._ZN2el4base9e
lStorageE'; GTest/GTestCTCLManager/CMakeFiles/GTEST_CTCLManager.dir/src/main.cpp.o:(.bss+0x124a1): first defined here

rc/pendingordersetting.cpp)

link_directories(${PROJECT_NAME} ${Boost_LIBRARY_DIR})

add_executable(${PROJECT_NAME} ${CTCLManager_SOURCES})
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
target_compile_definitions(${PROJECT_NAME} PRIVATE DEBUG_BUILD=1)
else()
endif()

target_include_directories(${PROJECT_NAME} PUBLIC includes ${Boost_LIBRARY_DIR})

file(COPY src/CTCLManager.conf DESTINATION ${CMAKE_SOURCE_DIR}/build/bin)
target_link_libraries(${PROJECT_NAME} logging greekutils CommonIncludes GreekSecurity ShmManager boost_filesystem boost_atomic)

add_library(${PROJECT_NAME}_Gtest ${CTCLManager_SOURCES})
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
target_compile_definitions(${PROJECT_NAME}_Gtest PRIVATE DEBUG_BUILD=1)
else()
endif()

target_include_directories(${PROJECT_NAME}_Gtest PUBLIC includes ${Boost_LIBRARY_DIR})

file(COPY src/CTCLManager.conf DESTINATION ${CMAKE_SOURCE_DIR}/build/bin)
target_link_libraries(${PROJECT_NAME}_Gtest logging greekutils CommonIncludes GreekSecurity ShmManager boost_filesystem boost_atomic)

[Shriharsh-Deshmukh]

To fix your issue with multiple definitions in GTest, follow these steps:

1. Exclude main.cpp from the library target: Ensure that main.cpp is only part of the executable and not included in the library.

   Update your CMakeLists.txt like this:

   # Include main.cpp only in the executable target
   add_executable(${PROJECT_NAME} src/main.cpp ${CTCLManager_SOURCES})
   
   # Exclude main.cpp from the library target
   add_library(${PROJECT_NAME}_Gtest ${CTCLManager_SOURCES})

2. Address AddressSanitizer (ASan) conflicts: Ensure consistent ASan settings across your project. Add this to your CMakeLists.txt:

   To enable ASan:

   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address")

   To disable ASan:

   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-sanitize=address")

This should resolve the multiple definition errors.