Build dependencies (seems) not correctly setup

[kirkscheper]

When running a make with -j8 on an eight core machine I get the following error:

error.txt

It seems like that the dependencies of the pprzlink build is not correctly setup. I was looking into this specifically to try to speed up the travis build so that we can use as much of the build time for airframes. I took a quick look at it but not that experienced with makefiles so not too efficient at debugging. Can someone take a look at this and suggest a solution?

[podhrmic]

I replicated the error. Anything beyond make -j1 triggers the error. I am not sure what can be the problem, but it would be indeed great if we could build faster.

[OpenUAS]

Indeed... note that e.g. if fails on this part somewhere...
make libpprzlink -j1
works
make libpprzlink -j8
not...

somewhere around:

...
+ mv convert.o common/convert.o
mv: cannot move 'convert.o' to 'common/convert.o': No such file or directory
Command exited with code 1.
../../common/ocaml/Makefile:79: recipe for target 'byte' failed
make[2]: *** [byte] Error 10
...

Want a dirty work around?...
make -j8;make -j8; make -j8
Still the speedup and a complete build... saves you time to debug and fix the real issue 😉

[podhrmic]

The workaround doesn't work for me unfortunately:-(