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CMakeLists.txt
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include($ENV{IDF_PATH}/tools/cmake/version.cmake) # $ENV{IDF_VERSION} was added after v4.3...
if("${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}" VERSION_LESS "4.4")
return()
endif()
set(ADD_SRCS "")
set(ADD_LIBS "")
set(PRIV_REQ "")
idf_build_get_property(target IDF_TARGET)
if(${target} STREQUAL "esp32p4")
list(APPEND ADD_SRCS "src/common/ppa/lcd_ppa.c")
list(APPEND ADD_LIBS idf::esp_driver_ppa)
list(APPEND PRIV_REQ esp_driver_ppa)
endif()
# This component uses a CMake workaround, so we can compile esp_lvgl_port for both LVGL8.x and LVGL9.x
# At the time of idf_component_register() we don't know which LVGL version is used, so we only register an INTERFACE component (with no sources)
# Later, when we know the LVGL version, we create another CMake library called 'lvgl_port_lib' and link it to the 'esp_lvgl_port' INTERFACE component
idf_component_register(
INCLUDE_DIRS "include"
PRIV_INCLUDE_DIRS "priv_include"
REQUIRES "esp_lcd"
PRIV_REQUIRES "${PRIV_REQ}")
# Get LVGL version
idf_build_get_property(build_components BUILD_COMPONENTS)
if(lvgl IN_LIST build_components)
set(lvgl_name lvgl) # Local component
set(lvgl_ver $ENV{LVGL_VERSION}) # Get the version from env variable (set from LVGL v9.2)
else()
set(lvgl_name lvgl__lvgl) # Managed component
idf_component_get_property(lvgl_ver ${lvgl_name} COMPONENT_VERSION) # Get the version from esp-idf build system
endif()
if("${lvgl_ver}" STREQUAL "")
message("Could not determine LVGL version, assuming v9.x")
set(lvgl_ver "9.0.0")
endif()
# Select folder by LVGL version
message(STATUS "LVGL version: ${lvgl_ver}")
if(lvgl_ver VERSION_LESS "9.0.0")
message(VERBOSE "Compiling esp_lvgl_port for LVGL8")
set(PORT_FOLDER "lvgl8")
else()
message(VERBOSE "Compiling esp_lvgl_port for LVGL9")
set(PORT_FOLDER "lvgl9")
endif()
# Add LVGL port extensions
set(PORT_PATH "src/${PORT_FOLDER}")
idf_build_get_property(build_components BUILD_COMPONENTS)
if("espressif__button" IN_LIST build_components)
list(APPEND ADD_SRCS "${PORT_PATH}/esp_lvgl_port_button.c")
list(APPEND ADD_LIBS idf::espressif__button)
endif()
if("button" IN_LIST build_components)
list(APPEND ADD_SRCS "${PORT_PATH}/esp_lvgl_port_button.c")
list(APPEND ADD_LIBS idf::button)
endif()
if("espressif__esp_lcd_touch" IN_LIST build_components)
list(APPEND ADD_SRCS "${PORT_PATH}/esp_lvgl_port_touch.c")
list(APPEND ADD_LIBS idf::espressif__esp_lcd_touch)
endif()
if("esp_lcd_touch" IN_LIST build_components)
list(APPEND ADD_SRCS "${PORT_PATH}/esp_lvgl_port_touch.c")
list(APPEND ADD_LIBS idf::esp_lcd_touch)
endif()
if("espressif__knob" IN_LIST build_components)
list(APPEND ADD_SRCS "${PORT_PATH}/esp_lvgl_port_knob.c")
list(APPEND ADD_LIBS idf::espressif__knob)
endif()
if("knob" IN_LIST build_components)
list(APPEND ADD_SRCS "${PORT_PATH}/esp_lvgl_port_knob.c")
list(APPEND ADD_LIBS idf::knob)
endif()
if("espressif__usb_host_hid" IN_LIST build_components)
list(APPEND ADD_SRCS "${PORT_PATH}/esp_lvgl_port_usbhid.c" "images/${PORT_FOLDER}/img_cursor.c")
list(APPEND ADD_LIBS idf::espressif__usb_host_hid)
endif()
if("usb_host_hid" IN_LIST build_components)
list(APPEND ADD_SRCS "${PORT_PATH}/esp_lvgl_port_usbhid.c" "images/${PORT_FOLDER}/img_cursor.c")
list(APPEND ADD_LIBS idf::usb_host_hid)
endif()
# Include SIMD assembly source code for rendering, only for (9.1.0 <= LVG_version < 9.2.0) and only for esp32 and esp32s3
if((lvgl_ver VERSION_GREATER_EQUAL "9.1.0") AND (lvgl_ver VERSION_LESS "9.2.0"))
if(CONFIG_IDF_TARGET_ESP32 OR CONFIG_IDF_TARGET_ESP32S3)
message(VERBOSE "Compiling SIMD")
if(CONFIG_IDF_TARGET_ESP32S3)
file(GLOB_RECURSE ASM_SRCS ${PORT_PATH}/simd/*_esp32s3.S) # Select only esp32s3 related files
else()
file(GLOB_RECURSE ASM_SRCS ${PORT_PATH}/simd/*_esp32.S) # Select only esp32 related files
endif()
# Explicitly add all assembly macro files
file(GLOB_RECURSE ASM_MACROS ${PORT_PATH}/simd/lv_macro_*.S)
list(APPEND ADD_SRCS ${ASM_MACROS})
list(APPEND ADD_SRCS ${ASM_SRCS})
# Include component libraries, so lvgl component would see lvgl_port includes
idf_component_get_property(lvgl_lib ${lvgl_name} COMPONENT_LIB)
target_include_directories(${lvgl_lib} PRIVATE "include")
# Force link .S files
set_property(TARGET ${COMPONENT_LIB} APPEND PROPERTY INTERFACE_LINK_LIBRARIES "-u lv_color_blend_to_argb8888_esp")
set_property(TARGET ${COMPONENT_LIB} APPEND PROPERTY INTERFACE_LINK_LIBRARIES "-u lv_color_blend_to_rgb565_esp")
set_property(TARGET ${COMPONENT_LIB} APPEND PROPERTY INTERFACE_LINK_LIBRARIES "-u lv_color_blend_to_rgb888_esp")
set_property(TARGET ${COMPONENT_LIB} APPEND PROPERTY INTERFACE_LINK_LIBRARIES "-u lv_rgb565_blend_normal_to_rgb565_esp")
set_property(TARGET ${COMPONENT_LIB} APPEND PROPERTY INTERFACE_LINK_LIBRARIES "-u lv_rgb888_blend_normal_to_rgb888_esp")
endif()
endif()
# Here we create the real lvgl_port_lib
add_library(lvgl_port_lib STATIC
${PORT_PATH}/esp_lvgl_port.c
${PORT_PATH}/esp_lvgl_port_disp.c
${ADD_SRCS}
)
target_include_directories(lvgl_port_lib PUBLIC "include")
target_include_directories(lvgl_port_lib PRIVATE "priv_include")
target_link_libraries(lvgl_port_lib PUBLIC
idf::esp_lcd
idf::${lvgl_name}
)
target_link_libraries(lvgl_port_lib PRIVATE
idf::esp_timer
${ADD_LIBS}
)
# Finally, link the lvgl_port_lib its esp-idf interface library
target_link_libraries(${COMPONENT_LIB} INTERFACE lvgl_port_lib)