make is a utility is to determine automatically which pieces of a large program need to be recompiled, and issue the commands to recompile them. To prepare to use make, you must write a file called the makefile that describes the relationships among files in your program, and the states the commands for updating each … Read more
That’s usually because you don’t have a file called vertex.cpp available to make. Check that: that file exists. you’re in the right directory when you make. Other than that, I’ve not much else to suggest. Perhaps you could give us a directory listing of that directory.
Line 18 is gcc -fPIC -g -c -Wall mymemory.cpp. Make is expecting a separator, typically :. It’s not detecting this line as a command. You mistyped the intendation: you have spaces where you should have a tab. Good editors highlight makefile lines that begin with spaces but look like they should begin with a tab … Read more
make has a very stupid relationship with tabs. All actions of every rule are identified by tabs. And, no, four spaces don’t make a tab. Only a tab makes a tab. To check, I use the command cat -e -t -v makefile_name. It shows the presence of tabs with ^I and line endings with $. … Read more