This test has been performed on Windows 7 SP1 (64bit) and using CMake 2.8.12.1
and VS2005 SP1.
Here is the source code used (which does not use the Boost library).
#include <iostream>
int main(int argc, char **argv)
{
std::cout << "Hello world" << std::endl;
return 0;
}
Here is the CMakeLists.txt used which find and include Boost.
CMAKE_MINIMUM_REQUIRED(VERSION 2.8.11)
FIND_PACKAGE(Boost 1.47.0 COMPONENTS
program_options
system
regex
math_c99)
IF(Boost_FOUND)
SET(Boost_INCLUDE_DIRS
${Boost_INCLUDE_DIR}/boost/tr1/tr1
${Boost_INCLUDE_DIR})
INCLUDE_DIRECTORIES("${Boost_INCLUDE_DIRS}")
ENDIF()
SET(_SOURCES
main.cpp
)
ADD_EXECUTABLE(Dummy
${_SOURCES}
)
TARGET_LINK_LIBRARIES(Dummy
${Boost_LIBRARIES}
)
This configuration compiles and links.
When building the target a depend.make file is generated. Viewing this file I
was surprised to discover that main.cpp.obj appears to "depend" on a number of
boost files. There are 1200 lines like there;
CMakeFiles\Dummy.dir\main.cpp.obj: ..\main.cpp
CMakeFiles\Dummy.dir\main.cpp.obj:
c:\Boost_r\1_47_0\include\boost-1_52\boost\aligned_storage.hpp
CMakeFiles\Dummy.dir\main.cpp.obj:
c:\Boost_r\1_47_0\include\boost-1_52\boost\array.hpp
CMakeFiles\Dummy.dir\main.cpp.obj:
c:\Boost_r\1_47_0\include\boost-1_52\boost\assert.hpp
Why does depend.make contain so many dependencies between main.cpp.obj and
boost headers?
--
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