Well, in the properties menu it is set to executable.
Here I post my newest terminal output. (Sorry for the slow response time, with school beginning soon in Poland...

)
jamroga@Dell-Latitude-E6500:~/Ndless$ make
make -C ndless-sdk
make[1]: Entering directory `/home/jamroga/Ndless/ndless-sdk'
make -C libsyscalls
make[2]: Entering directory `/home/jamroga/Ndless/ndless-sdk/libsyscalls'
arm-none-eabi-g++ -mcpu=arm926ej-s -std=c++11 -nostdlib -O3 -fPIE -fno-exceptions -fno-rtti -mlong-calls -Wall -Werror -I ../include/ -I ../thirdparty/nspire-io/include/ -D_TINSPIRE -ffunction-sections -fdata-sections -c stubs.cpp -o stubs.o
make[2]: arm-none-eabi-g++: Command not found
make[2]: *** [stubs.o] Error 127
make[2]: Leaving directory `/home/jamroga/Ndless/ndless-sdk/libsyscalls'
make[1]: *** [build-libsyscalls] Error 2
make[1]: Leaving directory `/home/jamroga/Ndless/ndless-sdk'
make: *** [build-ndless-sdk] Error 2
I am actually start thinking about abandoning that sdk project, in favor of TI-92 developement. My electronics-guru-uncle took a look at the broken i/o port, and said, he could easily fix it.
At least one good message for me.
