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cmake/boost.cmake: fixes search path for (linked) boost package if build in sub-directory #332

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cmake/boost.cmake: fixes search path for (linked) boost package if build in sub-directory #332

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6 changes: 5 additions & 1 deletion cmake/boost.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -13,15 +13,19 @@ set(BOOST_NO_BOOST_CMAKE ON)

unset(Boost_INCLUDE_DIR CACHE)
# we might have boost in tree, so provide a hint and try again
set(BOOST_INCLUDEDIR "${PROJECT_SOURCE_DIR}/include")
set(BOOST_INCLUDEDIR "${PROJECT_SOURCE_DIR}/include/boost")
find_package(Boost ${BOOST_MINVERSION} QUIET)
if(NOT Boost_FOUND)
set(BOOST_INCLUDEDIR "${PROJECT_SOURCE_DIR}/include")
find_package(Boost ${BOOST_MINVERSION} QUIET)
if(NOT Boost_FOUND)
# otherwise check for Boost installed on the system
unset(BOOST_INCLUDEDIR)
find_package(Boost ${BOOST_MINVERSION} QUIET)
if(NOT Boost_FOUND)
message(FATAL_ERROR "Boost ${BOOST_MINVERSION} or later not found. Either install system packages if available, extract Boost headers to ${CMAKE_SOURCE_DIR}/include, or set the CMake BOOST_ROOT variable.")
endif()
endif()
endif()

message(STATUS "Boost version: ${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}")
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