Having a hard time linking esp-sr to my project (AIS-1302)

[jayavanth]

I have added esp-sr to my main/CMakeLists.txt

set(requires
 esp-sr
...
)

and I have also added it as EXTRA_COMPONENT_DIRS in my CMakeLists.txt

set(EXTRA_COMPONENT_DIRS PATH/esp-sr)

But I'm still getting this ld error:

/Users/jay/.espressif/tools/xtensa-esp32s3-elf/esp-12.2.0_20230208/xtensa-esp32s3-elf/bin/../lib/gcc/xtensa-esp32s3-elf/12.2.0/../../../../xtensa-esp32s3-elf/bin/ld: esp-idf/main/libmain.a(main.cc.obj):(.literal._Z13recv_from_x86Pv+0x8c): undefined reference to `_Z16esp_srmodel_initPKc'
/Users/jay/.espressif/tools/xtensa-esp32s3-elf/esp-12.2.0_20230208/xtensa-esp32s3-elf/bin/../lib/gcc/xtensa-esp32s3-elf/12.2.0/../../../../xtensa-esp32s3-elf/bin/ld: esp-idf/main/libmain.a(main.cc.obj):(.literal._Z13recv_from_x86Pv+0x90): undefined reference to `_Z18esp_srmodel_filterP14srmodel_list_tPKcS2_'
/Users/jay/.espressif/tools/xtensa-esp32s3-elf/esp-12.2.0_20230208/xtensa-esp32s3-elf/bin/../lib/gcc/xtensa-esp32s3-elf/12.2.0/../../../../xtensa-esp32s3-elf/bin/ld: esp-idf/main/libmain.a(main.cc.obj): in function `_Z13recv_from_x86Pv':
zmain.cc:487: undefined reference to `_Z16esp_srmodel_initPKc'
/Users/jay/.espressif/tools/xtensa-esp32s3-elf/esp-12.2.0_20230208/xtensa-esp32s3-elf/bin/../lib/gcc/xtensa-esp32s3-elf/12.2.0/../../../../xtensa-esp32s3-elf/bin/ld: PROJECTPATH/main.cc:488: undefined reference to `_Z18esp_srmodel_filterP14srmodel_list_tPKcS2_'
collect2: error: ld returned 1 exit status

I also can't seem to find those symbols when I search in esp-sr/lib/esp32s3/*.a. Can someone please tell me what I'm missing? Thank you!

[igrr]

This issue is probably due to the fact that your main source file is a C++ file, but the header files in this repository are missing C++ guards. This should probably be fixed. In the meantime it should be possible to work around the issue by surrounding every #include statement in your main.cc file related to esp-sr with

extern "C" {
#include "..."
}

(More information can be found here: https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/cplusplus.html#combining-c-and-c-code)

[jayavanth]

@igrr OMG thank you that worked!!

[igrr]

Thanks for confirming! Let's keep this open until this is fixed in the repo.

[feizi]

I will check and fix this issue.

[feizi]

The issue has been fixed.