Boost_LIBRARIES不包含program_options

Question

When building my project, Boost_LIBRARIES doesn't contain program_options even though it is required and found. If I add it manually, it works fine. My CMake contains the following:

find_package(Boost 1.60.0 REQUIRED COMPONENTS program_options thread system regex)
message("${Boost_LIBRARIES}")
include_directories(include ${Boost_INCLUDE_DIRS})
link_directories(${Boost_LIBRARY_DIRS})
target_link_libraries (proj ${Boost_LIBRARIES} boost_program_options)

CMake claims that the library was found, but it is not listed in the call to message("${Boost_LIBRARIES}")

Answer 1

Rewrite your code for modern CMake:

find_package(Boost 1.60.0 REQUIRED COMPONENTS program_options thread system regex)

add_executable(proj ...)
target_link_libraries(proj Boost::program_options ...)

And forget about resulting Boost_BLAH_LBAH variables and include_directories + link_directories .

If smth goes wrong w/ Boost finder, add -DBoost_DEBUG=ON to cmake command line. If smth goes wrong w/ (any/generic) find_package add -DCMAKE_FIND_DEBUG_MODE=ON .

See also for inspiration: https://steveire.wordpress.com/2017/11/05/embracing-modern-cmake/