I am now missing the includes :( in the install folder....

I think that's a problem in the dagmc_install_library macro, not something you did. The shared library section starts like this:

  if (BUILD_SHARED_LIBS)
    add_library(${lib_name}-shared SHARED ${SRC_FILES})
      set_target_properties(${lib_name}-shared
        PROPERTIES OUTPUT_NAME ${lib_name}
        PUBLIC_HEADER "${PUB_HEADERS}")

while the static library section starts like this:

  if (BUILD_STATIC_LIBS)
    add_library(${lib_name}-static STATIC ${SRC_FILES})
    set_target_properties(${lib_name}-static
      PROPERTIES OUTPUT_NAME ${lib_name})

The static library section doesn't set the public headers as part of the target properties.

included the static header install fix in this PR....

@pshriwise is there some still some undressed comments in here ?

@bam241 can you remind me what the use case is for building without executables?

@bam241 can you remind me what the use case is for building without executables?

The plugin.