failed to build camera_web_server

[greeran]

i am new with the esp32 and am trying to build the camera web server example and fail with this output. if you could tell me what am i missing thanks

single_chip/camera_web_server$ idf.py build Checking Python dependencies... Python requirements from /home/rang/esp/esp-idf/requirements.txt are satisfied. Executing action: all (aliases: build) Running cmake in directory /home/rang/esp/project/cam-who/esp-who/examples/single_chip/camera_web_server/build Executing "cmake -G Ninja -DPYTHON_DEPS_CHECKED=1 -DESP_PLATFORM=1 --warn-uninitialized -DCCACHE_ENABLE=0 /home/rang/esp/project/cam-who/esp-who/examples/single_chip/camera_web_server"... Warn about uninitialized values. -- Found Git: /usr/bin/git (found version "2.17.1") -- IDF_TARGET not set, using default target: esp32 -- The C compiler identification is GNU 8.2.0 -- The CXX compiler identification is GNU 8.2.0 -- The ASM compiler identification is GNU -- Found assembler: /home/rang/.espressif/tools/xtensa-esp32-elf/esp32-2019r1-8.2.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc -- Check for working C compiler: /home/rang/.espressif/tools/xtensa-esp32-elf/esp32-2019r1-8.2.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc -- Check for working C compiler: /home/rang/.espressif/tools/xtensa-esp32-elf/esp32-2019r1-8.2.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Check for working CXX compiler: /home/rang/.espressif/tools/xtensa-esp32-elf/esp32-2019r1-8.2.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-g++ -- Check for working CXX compiler: /home/rang/.espressif/tools/xtensa-esp32-elf/esp32-2019r1-8.2.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-g++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- Project version: v0.9.2-16-g1dff0bb -- Building ESP-IDF components for target esp32 Loading defaults file /home/rang/esp/project/cam-who/esp-who/examples/single_chip/camera_web_server/sdkconfig.defaults... -- Found PythonInterp: /home/rang/.espressif/python_env/idf4.0_py2.7_env/bin/python (found version "2.7.15") -- Found Perl: /usr/bin/perl (found version "5.26.1") -- Adding linker script /home/rang/esp/project/cam-who/esp-who/examples/single_chip/camera_web_server/build/esp-idf/esp32/esp32_out.ld -- Adding linker script /home/rang/esp/esp-idf/components/esp32/ld/esp32.project.ld.in -- Adding linker script /home/rang/esp/esp-idf/components/esp32/ld/esp32.peripherals.ld -- Adding linker script /home/rang/esp/esp-idf/components/esp_rom/esp32/ld/esp32.rom.ld -- Adding linker script /home/rang/esp/esp-idf/components/esp_rom/esp32/ld/esp32.rom.libgcc.ld -- Adding linker script /home/rang/esp/esp-idf/components/esp_rom/esp32/ld/esp32.rom.syscalls.ld -- Adding linker script /home/rang/esp/esp-idf/components/esp_rom/esp32/ld/esp32.rom.newlib-data.ld -- Adding linker script /home/rang/esp/esp-idf/components/esp_rom/esp32/ld/esp32.rom.newlib-funcs.ld CMake Error at /home/rang/esp/project/cam-who/esp-who/components/esp-face/CMakeLists.txt:19 (target_link_libraries): Cannot specify link libraries for target "esp-face" which is not built by this project.

-- Configuring incomplete, errors occurred! See also "/home/rang/esp/project/cam-who/esp-who/examples/single_chip/camera_web_server/build/CMakeFiles/CMakeOutput.log". cmake failed with exit code 1

[xgarb]

I have a tutorial on my blog for this: https://robotzero.one/esp32-camera-module/ something there might help.

[XiaochaoGONG]

What's your esp-idf version? It should be v3.2.

[greeran]

hi. sorry for not answering i was on vacation. i worked with xgarg tutorial and it still outputs the same error and i am working on version v4.0. i have downloaded the arduino ide and the esp32 cam server example is built and loaded perfectly

[XiaochaoGONG]

There should be some tiny differences between the build scripts of 3.2 and 4.0. Anyway, either to go back to 3.2, either to change the CMakeLists.txt here. https://github.com/espressif/esp-face/blob/679b5340418bd9604c25735294dc536babca3db6/CMakeLists.txt#L19-L20 Change the esp-face to ${COMPONENT_TARGET}

[Xantrim]

I have the same problem using IDF V4.1. CMakeList.txt inside components/esp-face already contains the following lines:

target_link_libraries(${COMPONENT_NAME} "-L ${CMAKE_CURRENT_SOURCE_DIR}/lib") target_link_libraries(${COMPONENT_NAME} dl_lib fd fr )

Is there any way to make this work? I don't want to have to switch between different IDF versions just to work with different boards.

[XiaochaoGONG]

Hi all, the idf v4.0 has not been officially released. As v3.3 is released, please update the repo and submodules.

[energo5]

If i already have version 3.3 what the best way to update repo and submodules? What commands in terminal on macos?

[XiaochaoGONG]

If i already have version 3.3 what the best way to update repo and submodules? What commands in terminal on macos?

git pull origin master git submodule update

[energo5]

If i already have version 3.3 what the best way to update repo and submodules? What commands in terminal on macos?

git pull origin master git submodule update

After this commands i see new error: ~/Documents/Arduino/libraries/esp-who/examples/single_chip/detection_with_command_line $ idf.py build File "/Users/shev/esp/esp-idf/tools/idf.py", line 436 <<<<<<< HEAD ^ SyntaxError: invalid syntax

[greeran]

hi still not able to build the camera_web_server example. i tried pulling the git example but still fails on the same esp-face link library. i tried all changing to COMPONENT_NAME but it doesnt help i started working with the ardoino ide but would prefer using the command line and understanding why it fails

[XiaochaoGONG]

hi still not able to build the camera_web_server example. i tried pulling the git example but still fails on the same esp-face link library. i tried all changing to COMPONENT_NAME but it doesnt help i started working with the ardoino ide but would prefer using the command line and understanding why it fails

Hi @greeran, I notice that you are using idf v4.0, which is not released yet, so we have not tested on that version. I've changed COMPONENT_NAME to COMPONENT_TARGET for idf v3.3, so you can test with that modification.

[greeran]

thanks changing to COMPONENT_TARGET solved the problem. now i have an undefined for all the includes in the esp-face.

[XiaochaoGONG]

If i already have version 3.3 what the best way to update repo and submodules? What commands in terminal on macos?

git pull origin master git submodule update

After this commands i see new error: ~/Documents/Arduino/libraries/esp-who/examples/single_chip/detection_with_command_line $ idf.py build File "/Users/shev/esp/esp-idf/tools/idf.py", line 436 <<<<<<< HEAD ^ SyntaxError: invalid syntax

Hi @energo5, it looks like you have modified something so that there are conflicts. So you need to fix the conflicts. And you need to point esp-who idf to the right place. It seems you have already had a version of esp-idf. So either you update your esp-idf which seems to be /Users/shev/esp/esp-idf/, or modify your IDF_PATH to esp-who/esp-idf.

[energo5]

modify your IDF_PATH to esp-who/esp-idf.

It worked for me. Thanks.

[XiaochaoGONG]

thanks changing to COMPONENT_TARGET solved the problem. now i have an undefined for all the includes in the esp-face.

Hi @greeran What is the problem ?

[richardgotthard]

I managed to get linking error: collect2: error:"dl_lib", "fd" and "fr" returned 1 exit status. Im mainly interested in getting dl_matrix3d to work. How should i best write target_link_libraries to make it work?

set(COMPONENT_SRCS face_detection/fd_forward.c face_recognition/fr_forward.c face_recognition/fr_flash.c image_util/image_util.c )

set(COMPONENT_ADD_INCLUDEDIRS face_detection/include face_recognition/include image_util/include lib/include )

set(COMPONENT_REQUIRES spi_flash)

register_component()

target_link_libraries(${COMPONENT_NAME} "-L ${CMAKE_CURRENT_SOURCE_DIR}/lib") target_link_libraries(${COMPONENT_NAME} dl_lib fd fr )