Compiling challenges src/tools.cpp.o] Error

[Dukat-Gul]

Heya.
Tried to compile the excellent project and after a very long pause at the 84% mark I get the following failure. Any suggestions?

loraftp/build $ make -j Scanning dependencies of target wirehair
Scanning dependencies of target zstd
[ 2%] Building CXX object wirehair/CMakeFiles/wirehair.dir/gf256.cpp.o
[ 4%] Building CXX object wirehair/CMakeFiles/wirehair.dir/WirehairTools.cpp.o
[ 6%] Building CXX object wirehair/CMakeFiles/wirehair.dir/wirehair.cpp.o
[ 8%] Building CXX object wirehair/CMakeFiles/wirehair.dir/WirehairCodec.cpp.o
[ 10%] Building C object CMakeFiles/zstd.dir/zstd_lib/common/debug.c.o
[ 13%] Building C object CMakeFiles/zstd.dir/zstd_lib/common/error_private.c.o
[ 15%] Building C object CMakeFiles/zstd.dir/zstd_lib/common/entropy_common.c.o
[ 17%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/fse_compress.c.o
[ 19%] Building C object CMakeFiles/zstd.dir/zstd_lib/common/xxhash.c.o
[ 21%] Building C object CMakeFiles/zstd.dir/zstd_lib/common/threading.c.o
[ 23%] Building C object CMakeFiles/zstd.dir/zstd_lib/common/fse_decompress.c.o
[ 26%] Building C object CMakeFiles/zstd.dir/zstd_lib/common/zstd_common.c.o
[ 28%] Building C object CMakeFiles/zstd.dir/zstd_lib/common/pool.c.o
[ 30%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/zstd_compress_literals.c.o
[ 32%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/hist.c.o
[ 34%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/huf_compress.c.o
[ 36%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/zstd_compress_superblock.c.o
[ 39%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/zstd_compress_sequences.c.o
[ 43%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/zstd_double_fast.c.o
[ 45%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/zstd_fast.c.o
[ 45%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/zstd_compress.c.o[ 47%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/zstd_ldm.c.o
[ 50%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/zstd_lazy.c.o
[ 52%] Building C object CMakeFiles/zstd.dir/zstd_lib/dictBuilder/divsufsort.c.o[ 54%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/zstdmt_compress.c.o
[ 56%] Building C object CMakeFiles/zstd.dir/zstd_lib/compress/zstd_opt.c.o
[ 58%] Building C object CMakeFiles/zstd.dir/zstd_lib/decompress/huf_decompress.c.o
[ 63%] Building C object CMakeFiles/zstd.dir/zstd_lib/decompress/zstd_decompress_block.c.o
[ 65%] Building C object CMakeFiles/zstd.dir/zstd_lib/dictBuilder/fastcover.c.o
[ 67%] Building C object CMakeFiles/zstd.dir/zstd_lib/decompress/zstd_ddict.c.o
[ 60%] Building C object CMakeFiles/zstd.dir/zstd_lib/dictBuilder/cover.c.o
[ 69%] Building C object CMakeFiles/zstd.dir/zstd_lib/decompress/zstd_decompress.c.o
[ 71%] Building C object CMakeFiles/zstd.dir/zstd_lib/dictBuilder/zdict.c.o
/home/pi/LoRaFTP/loraftp/wirehair/WirehairCodec.cpp: In member function ‘void wirehair::Codec::BackSubstituteAboveDiagonal()’: /home/pi/LoRaFTP/loraftp/wirehair/WirehairCodec.cpp:2303:39: warning: passing argument 1 to restrict-qualified parameter aliases with argument 2 [-Wrestrict] gf256_div_mem(src, src, code_value, _block_bytes); ^~~ ~~~ /home/pi/LoRaFTP/loraftp/wirehair/WirehairCodec.cpp:2387:35: warning: passing argument 1 to restrict-qualified parameter aliases with argument 2 [-Wrestrict] gf256_div_mem(src, src, code_value, _block_bytes); ^~~ ~~~ /home/pi/LoRaFTP/loraftp/wirehair/WirehairCodec.cpp:2652:31: warning: passing argument 1 to restrict-qualified parameter aliases with argument 2 [-Wrestrict] gf256_div_mem(src, src, code_value, _block_bytes); ^~~ ~~~ [ 73%] Linking CXX static library libwirehair.a
[ 73%] Built target wirehair
[ 76%] Linking C static library libzstd.a
[ 76%] Built target zstd
Scanning dependencies of target loraftp
[ 82%] Building CXX object CMakeFiles/loraftp.dir/src/linux_serial.cpp.o
[ 82%] Building CXX object CMakeFiles/loraftp.dir/src/loraftp.cpp.o
[ 82%] Building CXX object CMakeFiles/loraftp.dir/src/waveshare.cpp.o
[ 84%] Building CXX object CMakeFiles/loraftp.dir/src/tools.cpp.o

c++: fatal error: Killed signal terminated program cc1plus compilation terminated.
make[2]: *** [CMakeFiles/loraftp.dir/build.make:102: CMakeFiles/loraftp.dir/src/tools.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [CMakeFiles/Makefile2:161: CMakeFiles/loraftp.dir/all] Error 2
make: *** [Makefile:141: all] Error 2

[catid]

Try building with make -j4

I think you're running out of RAM

[Dukat-Gul]

Thanks, yeah ran top in another Windows during the process and sure enough memory was being totally consumed....

tried the make -j4 and still the same issue, I do note that I am using a Raspberry Pi 3 not the recommended rpi4.
Anyhow did some quick swap adjustments/increases;

Temporarily Stop Swap:
sudo dphys-swapfile swapoff
Modify the size of the swap
As root, edit the file /etc/dphys-swapfile and modify the variable CONF_SWAPSIZE to 1024:
sudo vi /etc/dphys-swapfile
Initialize Swap File
sudo dphys-swapfile setup
Start Swap
sudo dphys-swapfile swapon

Compile worked, I have successfully transmitted (& received) and example log file and an 11MB video file.

I did try to use the echo_test command with 0 on one side and -1 (listen) on the other but nothing seemed to happen.

[Dukat-Gul]

Updated make -j4 along with some decent amount of swap enabled on my rpi3 allowed the compile to complete. Memory being exhausted was clearly the issue.