darknet-cpp compilation failed on Ubuntu 16.04

[ooobelix]

Hi,

my goal is to build CPP Darknet thanks "make darknet-cpp" on Ubuntu 16.04 with latest version v6.4 but:

./examples/classifier.c:682:26: error: invalid conversion from ‘void’ to ‘int’ [-fpermissive] int *indexes = calloc(top, sizeof(int));

I can see in the logs that I compiling with c++0x

... g++ -Iinclude/ -Isrc/ -DOPENCV pkg-config --cflags opencv -DGPU -I/usr/local/cuda/include/ -DCUDNN -Wno-write-strings -std=c++0x -Wall -Wno-unused-result -Wno-unknown-pragmas -Wfatal-errors -fPIC -Ofast -DOPENCV -DGPU -DCUDNN -c ./src/cost_layer.c -o obj-cpp/cost_layer.o ...

But as you have said:

Note: darknet-cpp requires a C++11 compiler for darknet-cpp, and arapaho builds.

So I modify the Makefile as follow without success, same issue:

--CFLAGS=-Wall -Wno-unused-result -Wno-unknown-pragmas -Wfatal-errors -fPIC ++CFLAGS=-std=c++11 -Wall -Wno-unused-result -Wno-unknown-pragmas -Wfatal-errors -fPIC

Finaly I modify examples/classifier.c as follow and it works better:

-- int indexes = calloc(top, sizeof(int)); ++ //int indexes = calloc(top, sizeof(int)); ++ int indexes = (int ) malloc(sizeof(int)*top);

But it failed on this:

darknet.c:(.text.startup+0x39a) : undefined reference to « run_isegmenter(int, char**) »

Thanks in advance

[prabindh]

Last update on Linux front was this commit - https://github.com/prabindh/darknet/commit/01365fbea88b461f19715fdbadc6dbe89f5573a4

The later updates were on Windows, hence Linux build is broken. Let me fix it.

[prabindh]

The corresponding tag for the last Linux build was v6.2.

[prabindh]

@ooobelix Please check latest master that resolves this, and also moves to latest mainline code. I will do more checks on the latest build soon.

[ooobelix]

Hi @prabindh, thanks for your job and fixes! Compilation under Ubuntu 16.04 on v6.5-1-g372b25d is working.

I have some questions:

• the commit 98e2a7674fd6a81349735db6f5b34229c871113a disable the use of OpenCV and GPU? If yes, is it working with GPU support?
• the commit a12730a124dd6c7d33f42eb2b78450c7b6379965 show some conflicts merge like "++>>>>>>> upstream/master"

Thanks again for your job!

[prabindh]

On below - this is a merge issue, will update.

• the commit a12730a show some conflicts merge like "++>>>>>>> upstream/master" On the below, havent had time to check the actual build, will update. You can enable it and try and update as well.
• the commit 98e2a76 disable the use of OpenCV and GPU? If yes, is it working with GPU support ?

[ooobelix]

Ok. Thanks again for your job!