Generating a map of the build

[Simon Wright]

srini said, in [tickets:#9],

b. If I wanted to find the memory map of the binary, i.e. ROM space used, addresses used, how can I generate this map?

Look at demo_tasking.gpr, package Linker:

package Linker is
   --  --create-map-file isn't supported in this configuration
   for Default_Switches ("ada") use
     (
      "-Wl,-Map," & Project'Project_Dir & Project'Name & ".map"
      );
end Linker;

Project’Project_Dir is the directory where the .gpr file is, and Project’Name is the .gpr file’s name (in this case, demo_tasking). As you can see from the comment, there should be a --create-map-file switch to automate this, but it doesn’t work with the current cross-compiler. I think I know why, and it should be fixed in the next compiler release I make.

[Simon Wright]

With GNAT GPL 2015 (and with the GCC 5.1.0 OS X port at Sourceforge), --create-map-file is supported.

Builder'Default_Switches ("ada") should contain "--create-map-file".

If you specify Project'Object_Dir, there's an additional step, because gprbuild changes directory to Object_Dir before the link: package Linker should contain

for Map_File_Option use "-Wl,-Map," & Project'Project_Dir;