Info Catalog ada-mode: Set compiler options ada-mode: Compiling Examples ada-mode: Use GNAT project file

ada-mode: Set source search path

 
 6.3 Set source search path
 ==========================
 
 In this example, we show how to deal with files in more than one
 directory.  We start with the same code as in No project files;
 create those files (with the errors present)
 
    Create the directory ‘Example_3’, containing:
 
    ‘hello_pkg.ads’:
 
      package Hello_Pkg is
         procedure Say_Hello;
      end Hello_Pkg;
 
    ‘hello_pkg.adb’:
 
      with Ada.Text_IO;
      package Hello_Pkg is
         procedure Say_Hello
         is begin
            Ada.Text_IO.Put_Line ("Hello from hello_pkg.adb");
         end Say_Hello;
      end Hello_Pkg;
 
    These are the same files from example 1; ‘hello_pkg.adb’ has an error
 on line 2.
 
    In addition, create a directory ‘Example_3/Other’, containing these
 files:
 
    ‘Other/hello_3.adb’:
 
      with Hello_Pkg;
      with Ada.Text_IO; use Ada.Text_IO;
      procedure Hello_3
      is begin
         Hello_Pkg.Say_Hello;
         Put_Line ("From hello_3");
      end Hello_3;
 
    There are no errors in this file.
 
    ‘Other/other.adp’:
 
      src_dir=..
      comp_opt=-I..
 
    Note that there must be no trailing spaces.
 
    In buffer ‘hello_3.adb’, invoke ‘Ada | Project | Load...’, and select
 ‘Example_3/Other/other.adp’.
 
    Then, again in ‘hello_3.adb’, invoke ‘Ada | Set main and Build’.  You
 should get a ‘*compilation*’ buffer containing something like (the
 directory paths will be different):
 
      cd c:/Examples/Example_3/Other/
      gnatmake -o hello_3 hello_3 -g -cargs -I.. -bargs  -largs
      gcc -c -g -I.. hello_3.adb
      gcc -c -I./ -g -I.. -I- C:\Examples\Example_3\hello_pkg.adb
      hello_pkg.adb:2:08: keyword "body" expected here [see file name]
      gnatmake: "C:\Examples\Example_3\hello_pkg.adb" compilation error
 
    Compare the ‘-cargs’ option to the compiler output in Set
 compiler options; this shows that ‘other.adp’ is being used to set the
 compiler options.
 
    Move to the error with ‘C-x `’.  Ada mode searches the list of
 directories given by ‘src_dir’ for the file mentioned in the compiler
 error message.
 
    Fixing the error, linking and running the code proceed as in No
 project files.
 

Info Catalog ada-mode: Set compiler options ada-mode: Compiling Examples ada-mode: Use GNAT project file