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# A helper function to extract public API
function(rebuild_module_api)
set (dstfile "${CMAKE_CURRENT_BINARY_DIR}/module.h")
set (tmpfile "${dstfile}.new")
set (errcodefile "${CMAKE_CURRENT_BINARY_DIR}/errcode.i")
set (headers)
# Get absolute path for header files (required of out-of-source build)
foreach (header ${ARGN})
if (IS_ABSOLUTE ${header})
list(APPEND headers ${header})
else()
list(APPEND headers ${CMAKE_CURRENT_SOURCE_DIR}/${header})
endif()
endforeach()
set (cflags ${CMAKE_C_FLAGS})
separate_arguments(cflags)
# Pass sysroot settings on OSX
if (NOT "${CMAKE_OSX_SYSROOT}" STREQUAL "")
set (cflags ${cflags} ${CMAKE_C_SYSROOT_FLAG} ${CMAKE_OSX_SYSROOT})
endif()
add_custom_command(OUTPUT ${dstfile}
COMMAND cat ${CMAKE_CURRENT_SOURCE_DIR}/module_header.h > ${tmpfile}
COMMAND cat ${headers} | ${CMAKE_SOURCE_DIR}/extra/apigen >> ${tmpfile}
COMMAND ${CMAKE_C_COMPILER}
${cflags}
-I ${CMAKE_SOURCE_DIR}/src -I ${CMAKE_BINARY_DIR}/src
-E ${CMAKE_SOURCE_DIR}/src/box/errcode.h > ${errcodefile}
COMMAND
grep "enum box_error_code" ${errcodefile} >> ${tmpfile}
COMMAND cat ${CMAKE_CURRENT_SOURCE_DIR}/module_footer.h >> ${tmpfile}
COMMAND ${CMAKE_COMMAND} -E copy_if_different ${tmpfile} ${dstfile}
COMMAND ${CMAKE_COMMAND} -E remove ${errcodefile} ${tmpfile}
DEPENDS ${srcfiles} ${CMAKE_SOURCE_DIR}/src/box/errcode.h
${CMAKE_CURRENT_SOURCE_DIR}/module_header.h
${CMAKE_CURRENT_SOURCE_DIR}/module_footer.h
)
add_custom_target(api ALL DEPENDS ${srcfiles} ${dstfile})
install(FILES ${dstfile} DESTINATION ${MODULE_INCLUDEDIR})
endfunction()
set_source_files_properties("${CMAKE_CURRENT_BINARY_DIR}/module.h" PROPERTIES GENERATED HEADER_FILE_ONLY)
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