issues

-- Configuring done
CMake Error in src/csync/CMakeLists.txt:
  No known features for CXX compiler

  "GNU"

  version 10.2.1.

Source was changed a lot. Solution: remove build directory and run again.

make[2]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.

Cause:

• When parallel build is used, subsequent call to make was performed using normal

  make ...

  call not

  $(MAKE) ...

  .

• Even with correct

  $(MAKE)

  usage, it is not working when $(MAKE) was used in variable:

DUMP_FILE_LIST := "$(MAKE)" -s --no-print-directory ...
%.out:
        $(NO_ECHO)$(DUMP_FILE_LIST) ...

Correct usage is to add + before $(MAKE):

DUMP_FILE_LIST := +"$(MAKE)" -s --no-print-directory ...

The problem is that GNU make, to implement parallel build, requires special options and descriptors to be passed over the sub-make calls, this happens automatically when make is invoked directly or through $(MAKE) but if it’s indirected through variables, then it’s not happening automatically and the developer has to tell GNU make to actually pass the options along.