‘standard’ issue when trying to connect

[qubolino]

just ordered pure thermal breakout and lepton 3.5 from groupgets but can't make it work with raspi4 nor raspi3

• red square when doing raspberry_video
• process hanging when doing raspberry_capture

looks like i'm not the only one that faced it but none of the solutions worked for me.

any hint/pointer?

[SoftwareArkitekt]

I had this issue when trying to compile the raspberrypi_video program. If you are using a Debian based OS for your Raspberry Pi (like Raspbian), it is worth noting that Debian is usually a little behind current package releases in an attempt to keep things very stable. The default G++ compiler (v4.9.2 on my RPi) does not include "to_string" in the std library, which is something that was added later. (I've read that it could actually be a g++ bug, but in either case it doesn't work properly.)

The README instructions say to run qmake && make, but instead try doing this:

1. cd to /LeptonModule/software/raspberrypi_video
2. Run qmake by itself (creates a file called "Makefile" in the raspberrypi_video folder)
3. Open "Makefile" in a text editor (such as vi, vim, nano, etc.)
4. Go to line 15 where it defines the CXXFLAGS, and add "-std=c++11" in front. It should look like this:
   CXXFLAGS = -std=c++11 -pipe -02 -Wall -W -D_REENTRANT $(DEFINES)
5. Save and exit the Makefile
6. Now run your make command

That tells make to look at the C++ 11 std file, which has a to_string function the compiler can use.