I'm trying to figure out how to maintain dependencies of my precompiled headers. It includes STL headers, some third-parties like boost and some of our rarely changing infrastructure headers.
I came out with something like this
SET(PCH_DIR ${CMAKE_CURRENT_BINARY_DIR})SET(PCH_HEADER ${CMAKE_CURRENT_SOURCE_DIR}/../include/server/server.h)SET(PCH_DST server.h.gch)ADD_CUSTOM_TARGET(serverPCH DEPENDS ${PCH_DST})ADD_CUSTOM_COMMAND(OUTPUT ${PCH_DST} ${PCH_DEP} COMMAND ${CMAKE_CXX_COMPILER} -x c++-header ${COMMON_CXXFLAGS} ${COMPILER_DEFINITIONS} -std=gnu++1z -c ${PCH_HEADER} -o ${PCH_DST} -I${CMAKE_SOURCE_DIR}/lib/include/server -I${CMAKE_SOURCE_DIR}/lib/include MAIN_DEPENDENCY ${PCH_HEADER} WORKING_DIRECTORY ${PCH_DIR} COMMENT "Building precompiled header" VERBATIM)Looks like its doing its job and it gets recompiled once the header is edited. However, PCH recompilation is not triggered when one of files included in server.h is changed. Is there a way to trigger re-compilation if any of headers included in server.h is changed?