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CMake; 386: x86-64 input file architecture (..) is incompatible with i386 output

I get this error when I do 'cmake build' first and then 'make':

/usr/bin/ld: i386:x86-64 architecture of input file `CMakeFiles/eperftool.dir/mp4reader.o' is incompatible with i386 output
/usr/bin/ld: i386:x86-64 architecture of input file `CMakeFiles/eperftool.dir/codec_instance_mgmt.o' is incompatible with i386 output
/usr/bin/ld: i386:x86-64 architecture of input file `CMakeFiles/eperftool.dir/callbacks.o' is incompatible with i386 output
(...)"

This is my makefile format:

file (GLOB eperftool_sources ./*)

set(EPERFTOOL_BIN ${PROJECT_SOURCE_DIR}/bin/${CMAKE_BUILD_TYPE}/eperftool CACHE STRING "eperftool dir")
add_executable( eperftool ${eperftool_sources})


find_package (Threads)
if (Threads_FOUND)
  include_directories(${Threads_INCLUDE_DIRS})
endif (Threads_FOUND)

target_link_libraries(eperftool openfec m)

target_link_libraries(eperftool ${CMAKE_THREAD_LIBS_INIT} )

set(CMAKE_SHARED_LINKER_FLAGS "-m32")"

I added the final line 'set (CMAKE_SHARED_LINKER_FLAGS "-m32")' after googling the problem and found the person who added the -link flag -m32 to fix the problem, but that didn't fix the problem for me.

What should I do to fix the problem?

Thank!

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1 answer


I think you copied the object files mp4reader.o, codec_instance_mgmt.o and callbacks.o

from somewhere (not compiled on your system) causing incompatibility on your system. You can try to remove all objects and compile them again:

rm *.o


and then compile again.

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