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#
# mbed-2 yotta-compatible build system
#
# make sure necessary features are enabled:
project(mbed-classic)
enable_language(ASM)
# override compilation flags:
if(CMAKE_C_COMPILER_ID MATCHES GNU)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
endif()
# the mbed.a library is built from two sets of source files + include
# directories:
#
# MBED_COMMON_SOURCES: the source files that are the same for all targets,
# these are easily found by globbing:
#
file(GLOB MBED_COMMON_SOURCES "common/*.cpp" "common/*.c")
#
# (always include the hal header directory, too)
set(MBED_COMMON_INCLUDE_DIRS "hal")
# and MBED_TARGET_SOURCES: these depend on which target we are building for. To
# find these we need to walk the directories in targets/, and wherever we see a
# TARGET_<something> name, recurse only if <something> matches what we're
# currently building for
macro(mbed_find_target_dirs PARENT_DIRECTORY SOURCES_LIST INCLUDES_LIST)
# append this directory to the search path:
list(APPEND ${INCLUDES_LIST} "${PARENT_DIRECTORY}")
# add all source files in this directory to the sources list:
file(GLOB sources "${PARENT_DIRECTORY}/*.cpp" "${PARENT_DIRECTORY}/*.c" "${PARENT_DIRECTORY}/*.s" "${PARENT_DIRECTORY}/*.S" )
list(APPEND ${SOURCES_LIST} ${sources})
# get a list of all subdirectories that we want to recurse into:
file(GLOB dir_children RELATIVE "${PARENT_DIRECTORY}" "${PARENT_DIRECTORY}/*")
set(matching_subdirs "")
foreach(child ${dir_children})
if(IS_DIRECTORY "${PARENT_DIRECTORY}/${child}")
# is this directory name a magic one?
if("${child}" MATCHES "^TARGET_")
# target-magic: recurse if the MBED_LEGACY_TARGET_DEFINITIONS **list**
# contains a matching value:
foreach(legacy_magic_def ${MBED_LEGACY_TARGET_DEFINITIONS})
# we could probably unroll the list into a single regex if
# this is a performance problem:
if("${child}" MATCHES "^TARGET_${legacy_magic_def}$")
list(APPEND matching_subdirs ${child})
break()
endif()
endforeach()
elseif("${child}" MATCHES "^TOOLCHAIN_")
# toolchain-magic: (recurse if the MBED_LEGACY_TOOLCHAIN matches
# this name)
if("${child}" MATCHES "^TOOLCHAIN_${MBED_LEGACY_TOOLCHAIN}$")
list(APPEND matching_subdirs "${child}")
endif()
else()
# not special: always recurse into this directory
list(APPEND matching_subdirs "${child}")
endif()
endif()
endforeach()
#message("matching_subdirs: ${matching_subdirs}")
# recurse:
foreach(subdir ${matching_subdirs})
mbed_find_target_dirs("${PARENT_DIRECTORY}/${subdir}" ${SOURCES_LIST} ${INCLUDES_LIST})
endforeach()
endmacro()
set(MBED_TARGET_SOURCES "")
set(MBED_TARGET_INCLUDE_DIRS "")
mbed_find_target_dirs("${CMAKE_CURRENT_SOURCE_DIR}/targets" MBED_TARGET_SOURCES MBED_TARGET_INCLUDE_DIRS)
#message("found target sources: ${MBED_TARGET_SOURCES}")
#message("found target include dirs: ${MBED_TARGET_INCLUDE_DIRS}")
# unfortunately, for ARMCC, the startup code needs to be provided as an object
# on the command line (not as part of an archive). To do this we override the
# CMake add_executable command.
if(CMAKE_C_COMPILER_ID STREQUAL "ARMCC")
set(MBED_TARGET_STARTUP_CODE_SOURCES "")
foreach(src ${MBED_TARGET_SOURCES})
if("${src}" MATCHES .*startup_.*\\.[sS])
LIST(APPEND MBED_TARGET_STARTUP_CODE_SOURCES "${src}")
endif()
endforeach()
add_library(mbed_classic_startupcod OBJECT ${MBED_TARGET_STARTUP_CODE_SOURCES})
macro (add_executable _name)
_add_executable(${ARGV} $<TARGET_OBJECTS:mbed_classic_startupcod>)
endmacro()
endif()
# we have to append any target-specific include dirs to the global include dirs
# list, so that any indirect includes (e.g. via mbed.h) of files in those
# directories will work:
# (non-target-specific include dirs are listed in extraIncludes in module.json)
foreach(dir ${MBED_TARGET_INCLUDE_DIRS})
set_property(GLOBAL APPEND PROPERTY YOTTA_GLOBAL_INCLUDE_DIRS ${dir})
endforeach()
# finally, we can construct a library using the determined set of include paths
# + source files. Note that the library name must match the name of the yotta
# module (defined in module.json) for this module to link properly with other
# yotta modules.
include_directories(${MBED_COMMON_INCLUDE_DIRS})
include_directories(${MBED_TARGET_INCLUDE_DIRS})
add_library(mbed-classic
${MBED_COMMON_SOURCES}
${MBED_TARGET_SOURCES}
)
if(CMAKE_COMPILER_IS_GNUCC)
target_link_libraries(mbed-classic
-lnosys
)
endif()