CMakeRS.cmake

CMakeRS.cmake

set(CMAKERS OFF)
if (NOT CMAKERS)
set(CMAKERS ON CACHE INTERNAL "" FORCE)

find_program(CMAKERS_CARGO cargo REQUIRED)

if (CMAKE_BUILD_TYPE STREQUAL "Release")
  set(CMAKERS_RELEASE "--release")
  set(CMAKERS_TDIR "release")
else ()
  set(CMAKERS_TDIR "debug")
endif ()

macro (rust_crate RUST_NAME)
  set(options IS_RELEASE)
  set(oneval CRATE_DIR TARGET)
  set(multival OUTPUTS)
  cmake_parse_arguments(RUST "${options}" "${oneval}" "${multival}" ${ARGN})
  if (RUST_TARGET STREQUAL "host")
    set(TARGET_ARGS)
    set(TARGET_DIR "${RUST_CRATE_DIR}/target/${CMAKERS_TDIR}/")
  else ()
    set(TARGET_ARGS "--target" "${RUST_TARGET}")
    set(TARGET_DIR "${RUST_CRATE_DIR}/target/${RUST_TARGET}/${CMAKERS_TDIR}/")
  endif ()
  foreach (o ${RUST_OUTPUTS})
    set(RUST_OUTPUTS_ ${RUST_OUTPUTS_} "${TARGET_DIR}/${o}")
  endforeach ()
  add_custom_command(
    COMMAND ${CMAKERS_CARGO} build ${TARGET_ARGS} ${CMAKERS_RELEASE}
    WORKING_DIRECTORY ${RUST_CRATE_DIR}
    OUTPUT ${RUST_OUTPUTS_}
    USES_TERMINAL ON
    COMMENT "Build crate `${RUST_NAME}` for `${RUST_TARGET}`"
  )
  add_custom_target(
    "cmakers-${RUST_NAME}-${RUST_TARGET}" ALL
    COMMAND ${CMAKE_COMMAND} -E copy ${RUST_OUTPUTS_} "${CMAKE_CURRENT_BINARY_DIR}"
    DEPENDS ${RUST_OUTPUTS_}
  )
endmacro ()

endif ()