1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 2006-2009, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- GNAT was originally developed by the GNAT team at New York University. --
23 -- Extensive contributions were provided by Ada Core Technologies Inc. --
25 ------------------------------------------------------------------------------
27 -- The following package manipulates the configuration files
33 type Config_File_Hook is access procedure
34 (Config_File : in out Prj.Tree.Project_Node_Id;
35 Project_Node_Tree : Prj.Tree.Project_Node_Tree_Ref);
36 -- Hook called after the config file has been parsed. This lets the
37 -- application do last minute changes to it (GPS uses this to add the
38 -- default naming schemes for instance). At that point, the config file
39 -- has not been applied to the project yet. When no config file was found,
40 -- and automatic generation is disabled, it is possible that Config_File
41 -- is set to Empty_Node when this procedure is called. You can then decide
42 -- to create a new config file if you need.
44 procedure Parse_Project_And_Apply_Config
45 (Main_Project : out Prj.Project_Id;
46 User_Project_Node : out Prj.Tree.Project_Node_Id;
47 Config_File_Name : String := "";
48 Autoconf_Specified : Boolean;
49 Project_File_Name : String;
50 Project_Tree : Prj.Project_Tree_Ref;
51 Project_Node_Tree : Prj.Tree.Project_Node_Tree_Ref;
52 Packages_To_Check : String_List_Access;
53 Allow_Automatic_Generation : Boolean := True;
54 Automatically_Generated : out Boolean;
55 Config_File_Path : out String_Access;
56 Target_Name : String := "";
57 Normalized_Hostname : String;
58 Flags : Processing_Flags;
59 On_Load_Config : Config_File_Hook := null);
60 -- Find the main configuration project and parse the project tree rooted at
61 -- this configuration project.
63 -- If the processing fails, Main_Project is set to No_Project. If the error
64 -- happend while parsing the project itself (ie creating the tree),
65 -- User_Project_Node is also set to Empty_Node.
67 -- Autoconf_Specified indicates whether the user has specified --autoconf.
68 -- If this is the case, the config file might be (re)generated, as
69 -- appropriate, to match languages and target if the one specified doesn't
72 -- Normalized_Hostname is the host on which gprbuild is returned,
73 -- normalized so that we can more easily compare it with what is stored in
74 -- configuration files. It is used when the target is unspecified, although
75 -- we need to know the target specified by the user (Target_Name) when
76 -- computing the name of the default config file that should be used.
78 -- If specified, On_Load_Config is called just after the config file has
79 -- been created/loaded. You can then modify it before it is later applied
80 -- to the project itself.
82 -- Any error in generating or parsing the config file is reported via the
83 -- Invalid_Config exception, with an appropriate message. Any error while
84 -- parsing the project file results in No_Project.
86 procedure Process_Project_And_Apply_Config
87 (Main_Project : out Prj.Project_Id;
88 User_Project_Node : Prj.Tree.Project_Node_Id;
89 Config_File_Name : String := "";
90 Autoconf_Specified : Boolean;
91 Project_Tree : Prj.Project_Tree_Ref;
92 Project_Node_Tree : Prj.Tree.Project_Node_Tree_Ref;
93 Packages_To_Check : String_List_Access;
94 Allow_Automatic_Generation : Boolean := True;
95 Automatically_Generated : out Boolean;
96 Config_File_Path : out String_Access;
97 Target_Name : String := "";
98 Normalized_Hostname : String;
99 Flags : Processing_Flags;
100 On_Load_Config : Config_File_Hook := null;
101 Reset_Tree : Boolean := True);
102 -- Same as above, except the project must already have been parsed through
103 -- Prj.Part.Parse, and only the processing of the project and the
104 -- configuration is done at this level.
106 -- If Reset_Tree is true, all projects are first removed from the tree.
107 -- When_No_Sources indicates what should be done when no sources are found
108 -- for one of the languages of the project.
110 -- If Require_Sources_Other_Lang is true, then all languages must have at
111 -- least one source file, or an error is reported via When_No_Sources. If
112 -- it is false, this is only required for Ada (and only if it is a language
115 Invalid_Config : exception;
117 procedure Get_Or_Create_Configuration_File
118 (Project : Prj.Project_Id;
119 Project_Tree : Prj.Project_Tree_Ref;
120 Project_Node_Tree : Prj.Tree.Project_Node_Tree_Ref;
121 Allow_Automatic_Generation : Boolean;
122 Config_File_Name : String := "";
123 Autoconf_Specified : Boolean;
124 Target_Name : String := "";
125 Normalized_Hostname : String;
126 Packages_To_Check : String_List_Access := null;
127 Config : out Prj.Project_Id;
128 Config_File_Path : out String_Access;
129 Automatically_Generated : out Boolean;
130 Flags : Processing_Flags;
131 On_Load_Config : Config_File_Hook := null);
132 -- Compute the name of the configuration file that should be used. If no
133 -- default configuration file is found, a new one will be automatically
134 -- generated if Allow_Automatic_Generation is true.
136 -- Any error in generating or parsing the config file is reported via the
137 -- Invalid_Config exception, with an appropriate message.
139 -- On exit, Configuration_Project_Path is never null (if none could be
140 -- found, Os.Fail was called and the program exited anyway).
142 -- The choice and generation of a configuration file depends on several
143 -- attributes of the user's project file (given by the Project argument),
144 -- e.g. list of languages that must be supported. Project must therefore
145 -- have been partially processed (phase one of the processing only).
147 -- Config_File_Name should be set to the name of the config file specified
148 -- by the user (either through gprbuild's --config or --autoconf switches).
149 -- In the latter case, Autoconf_Specified should be set to true to indicate
150 -- that the configuration file can be regenerated to match target and
151 -- languages. This name can either be an absolute path, or the a base name
152 -- that will be searched in the default config file directories (which
153 -- depends on the installation path for the tools).
155 -- Target_Name is used to chose the configuration file that will be used
156 -- from among several possibilities.
158 -- If a project file could be found, it is automatically parsed and
159 -- processed (and Packages_To_Check is used to indicate which packages
160 -- should be processed)
162 procedure Apply_Config_File
163 (Config_File : Prj.Project_Id;
164 Project_Tree : Prj.Project_Tree_Ref);
165 -- Apply the configuration file settings to all the projects in the
166 -- project tree. The Project_Tree must have been parsed first, and
167 -- processed through the first phase so that all its projects are known.
169 -- Currently, this will add new attributes and packages in the various
170 -- projects, so that when the second phase of the processing is performed
171 -- these attributes are automatically taken into account.
173 procedure Add_Default_GNAT_Naming_Scheme
174 (Config_File : in out Prj.Tree.Project_Node_Id;
175 Project_Tree : Prj.Tree.Project_Node_Tree_Ref);
176 -- A hook that will create a new config file (in memory), used for
177 -- Get_Or_Create_Configuration_File and Process_Project_And_Apply_Config
178 -- and add the default GNAT naming scheme to it. Nothing is done if the
179 -- config_file already exists, to avoid overriding what the user might
180 -- have put in there.
186 procedure Set_Runtime_For (Language : Name_Id; RTS_Name : String);
187 -- Specifies the runtime to use for a specific language. Most of the time
188 -- this should be used for Ada, but other languages can also specify their
189 -- own runtime. This is in general specified via the --RTS command line
190 -- switch, and results in a specific component passed to gprconfig's
191 -- --config switch then automatically generating a configuration file.
193 function Runtime_Name_For (Language : Name_Id) return String;
194 -- Returns the runtime name for a language. Returns an empty string if no
195 -- runtime was specified for the language using option --RTS.