libgcc_s_dw2-1.dll required even with the -static option (MinGW64_9_3 compiler)

Usage
1

Hello,
I have a problem that I can’t solve. My executable still depends on the libgcc_s_dw2-1.dll dll whereas I want to have it static in the executable.
I have 2 libs A and B in c, one lib C in fortran and I create an executable from these 3 libs. I tried the following lines in my cmakelist.txt :

#add_compile_options(-static -fPIC -ffloat-store -ffinite-math-only -static -O )
#add_link_options(-static-libgcc -static-libstdc++)
	#set(CMAKE_CXX_FLAGS "-static-libgcc -static-libstdc++ ${CMAKE_CXX_FLAGS}")
	#set(CMAKE_C_FLAGS "-static-libgcc ${CMAKE_C_FLAGS}")
	#set(CMAKE_EXE_LINKER_FLAGS "-Bstatic -static-libgcc -static-libstdc++ ${CMAKE_EXE_LINKER_FLAGS}")
	#set(CMAKE_MODULE_LINKER_FLAGS "-static-libgcc -static-libstdc++ ${CMAKE_MODULE_LINKER_FLAGS}")
#set(CMAKE_C_STANDARD_LIBRARIES "-static-libgcc -static-libstdc++ ${CMAKE_CSS_STANDARD_LIBRARIES}")
#set(CMAKE_SHARED_LINKER_FLAGS "-static-libgcc -static-libstdc++ ${CMAKE_SHARED_LINKER_FLAGS}")

Mon code cmake done les lignes suivantes :

#set(CMAKE_SHARED_LINKER_FLAGS "-static-libgcc -static-libstdc++ ${CMAKE_SHARED_LINKER_FLAGS}")
#cmake_minimum_required(VERSION 3.15)
#project(
  #PROJET_fred
  #VERSION 1.0
  #DESCRIPTION "PROJET_fred project"
  #LANGUAGES C Fortran
#)
#set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
#set(CMAKE_VERBOSE_MAKEFILE ON)
#if("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_Fortran_COMPILER_ID}" STREQUAL "GNU")
#endif()
	#set(CMAKE_CXX_FLAGS "-static-libgcc -static-libstdc++ ${CMAKE_CXX_FLAGS}")
	#set(CMAKE_C_FLAGS "-static-libgcc ${CMAKE_C_FLAGS}")
	#set(CMAKE_EXE_LINKER_FLAGS "-Bstatic -static-libgcc -static-libstdc++ ${CMAKE_EXE_LINKER_FLAGS}")
	#set(CMAKE_MODULE_LINKER_FLAGS "-static-libgcc -static-libstdc++ ${CMAKE_MODULE_LINKER_FLAGS}")
#set(CMAKE_C_STANDARD_LIBRARIES "-static-libgcc -static-libstdc++ ${CMAKE_CSS_STANDARD_LIBRARIES}")

#add_compile_options(-static -fPIC -ffloat-store -ffinite-math-only -static -O )
# SET(CMAKE_Fortran_COMPILER
# "D:\ftarroux\scoop\apps\perl\current\c\bin\gfortran.exe")
#add_link_options(-static-libgcc -static-libstdc++)

#set(CMAKE_SHARED_LINKER_FLAGS "-static-libgcc -static-libstdc++ ${CMAKE_SHARED_LINKER_FLAGS}")


file(
  GLOB
  source_ckio
    ...
)


file(
  GLOB
  fortran_sources2
  ...
  )

file(
  GLOB
  source_c_2
   ...      )

add_library(ck_io STATIC ${source_ckio})
target_compile_options(ck_io PRIVATE -DPROCESSOR_REG_SIZE=8 -DBIG_ENDIAN)
if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
  target_compile_definitions(ck_io PRIVATE LINUX)
  if("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
    target_compile_options(ck_io PRIVATE -fPIC)
  endif()
endif()

add_library(PROJET_fred_lib_fortran STATIC ${fortran_sources2})
target_link_libraries(PROJET_fred_lib_fortran PRIVATE ck_io)
#target_link_libraries(PROJET_fred_lib_fortran PRIVATE ck_io -static-libgcc -static-libstdc++)
target_include_directories(
  PROJET_fred_lib_fortran
  PRIVATE ....
)

#if("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_Fortran_COMPILER_ID}" STREQUAL "GNU")
    #target_compile_options(PROJET_fred_lib_fortran PRIVATE -static -static-libgcc -static-libstdc++
      #)
#endif()

if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
  if("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
    target_compile_options(PROJET_fred_lib_fortran PRIVATE -fPIC)
  endif()
endif()

if(MINGW)
  set(CMAKE_Fortran_FLAGS "-O2 -std=legacy ")
endif(MINGW)
if(WIN32)
  set_target_properties(
    PROJET_fred_lib_fortran PROPERTIES COMPILE_DEFINITIONS
    WIN32
  )
endif(WIN32)

#add executable PROJET_fred
add_executable(PROJET_fred ${source_c_2} ./main.c)
#target_link_libraries(PROJET_fred PRIVATE PROJET_fred_lib_fortran ck_io -static-libgcc -static-libstdc++)
target_link_libraries(PROJET_fred PRIVATE PROJET_fred_lib_fortran ck_io)
target_include_directories(
  PROJET_fred
  PRIVATE ...
)

if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
  target_compile_definitions(PROJET_fred PRIVATE LINUX)
  if("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
    target_compile_options(PROJET_fred PRIVATE -fPIC)
  endif()
endif()

#add total PROJET_fred lib
add_library(PROJET_fred_lib STATIC ${source_c_2})
target_link_libraries(PROJET_fred_lib PROJET_fred_lib_fortran ck_io)
#target_link_libraries(PROJET_fred_lib PROJET_fred_lib_fortran ck_io -static-libgcc -static-libstdc++ -static)
target_include_directories(
  PROJET_fred_lib
  PRIVATE ....
)
if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
  target_compile_definitions(PROJET_fred_lib PRIVATE LINUX)
  if("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
    target_compile_options(PROJET_fred_lib PRIVATE -fPIC)
  endif()
endif()

if(MINGW)
  if(CMAKE_BUILD_TYPE MATCHES Debug)
    message("debug mode")
    #target_compile_options(PROJET_fred_fred2 PRIVATE -Q -v -da -g -lSegFault )
    add_custom_command(
      TARGET PROJET_fred
      POST_BUILD
      COMMAND
      ${CMAKE_COMMAND} -E copy
      ${CMAKE_CURRENT_BINARY_DIR}/PROJET_fred.exe
      ${CMAKE_SOURCE_DIR}/PROJET_fred_original_debug.exe
    )
  else()
    add_custom_command(
      TARGET PROJET_fred
      POST_BUILD
      COMMAND
      ${CMAKE_COMMAND} -E copy
      ${CMAKE_CURRENT_BINARY_DIR}/PROJET_fred.exe
      ${CMAKE_SOURCE_DIR}/PROJET_fred_original_release.exe
    )
  endif(CMAKE_BUILD_TYPE MATCHES Debug)
endif(MINGW)