I ran into this issue with the Oracle 11R2 client. Not sure if the Oracle installer did this or someone did it here before I arrived. It was not 64-bit vs 32-bit, all was 64-bit. The error was that libexpat.so.1 was not a symbolic link. It turned out that there were two identical files, libexpat.so.1.5.2 … Read more
Actually, @- and -@ both do work, but will print a make: [target] Error 1 (ignored) warning. Instead, you can use @command || true or, since : is shorthand for true in shell, @command ||: This often a better thing to do, because it avoid Make’s confusing warning that an error was ignored in an … Read more
The variable MAKECMDGOALS contains the list of targets that were specified on the command line, no matter how many (it’s empty if there were none).
In the makefile-: mycommand || (echo “mycommand failed $$?”; exit 1) Each line in the makefile action invokes a new shell – the error must be checked in the action line where the command failed. If mycommand fails the logic branches to the echo statement then exits.
dep.o: dep.src config1.cfg config2.cfg @echo the second preq is $(word 2,$^), the third is $(word 3,$^)
I think make -j will respect the dependencies you specify in your Makefile; i.e. if you specify that objA depends on objB and objC, then make won’t start working on objA until objB and objC are complete. Most likely your Makefile isn’t specifying the necessary order of operations strictly enough, and it’s just luck that … Read more
GNU make provides .VARIABLES which holds all global variables’ names. However, this includes built-in variables(like MAKEFLAGS). If you have to exclude built-in variables, some filtering like the following might be needed. The following makefile prints user-defined variables(CUR-DIR, LOG-DIR) using info: # Place this line at the top of your Makefile VARS_OLD := $(.VARIABLES) # Define … Read more
Switch to the root directory of your source tree and run the following command: $ make modules SUBDIRS=drivers/the_module_directory And to install the compiled module: $ make modules_install SUBDIRS=drivers/the_module_directory Note: As lunakid mentions, the latter command might not build the module first, so be careful.
Yes, that’s allowed. (If you don’t believe me, just try it!)
In the manual for GNU make, they talk about this specific example when describing the value function: The value function provides a way for you to use the value of a variable without having it expanded. Please note that this does not undo expansions which have already occurred; for example if you create a simply … Read more