[CMake] FindBoost does not detect absence of header file

[Joachim Wuttke]

FindBoost does not detect absence of header files.

To be specific: Run the following under cmake version 3.5.1:

set(Boost_NO_BOOST_CMAKE ON) # prevent shortcut
set(Boost_USE_STATIC_LIBS OFF)
set(Boost_USE_MULTITHREADED ON)
set(Boost_USE_STATIC_RUNTIME OFF)
add_definitions(-DBOOST_ALL_DYN_LINK) # line is needed for MSVC
#add_definitions(-DBOOST_LIB_DIAGNOSTIC) # shows during compilation auto-linked libraries
if(WIN32)
     set(boost_libraries_required date_time chrono program_options zlib bzip2 iostreams system filesystem regex thread)
else()
     set(boost_libraries_required date_time chrono program_options iostreams system filesystem regex thread)
endif()
find_package(Boost 1.48.0 COMPONENTS ${boost_libraries_required} REQUIRED)
message(STATUS "--> Boost_INCLUDE_DIRS: ${Boost_INCLUDE_DIRS}")
message(STATUS "    Boost_LIBRARY_DIRS: ${Boost_LIBRARY_DIRS}")
message(STATUS "    Boost_LIBRARIES: ${Boost_LIBRARIES}")

It will pass, even if files like /usr/include/boost/date_time.hpp &c are removed
from the system.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 5033 bytes
Desc: S/MIME Cryptographic Signature
URL: <http://public.kitware.com/pipermail/cmake/attachments/20160412/d318e470/attachment.bin>