1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2013 Alexis Laferrière <alexis.laf@xymus.net>
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
17 # Offers the `PkgconfigPhase` to use the external program "pkg-config" in order
18 # to discover what options to pass to the C or C++ compiler.
22 private import annotation
23 private import literal
25 redef class ToolContext
26 # Detects the `pkgconfig` annotation on the module declaration only
27 var pkgconfig_phase
: Phase = new PkgconfigPhase(self, [literal_phase
])
29 # Is the external program `pkg-config` available?
30 var pkgconfig_is_available
: Bool is lazy
do
31 # Ignore/silence the process output
32 var proc_which
= new ProcessReader("which", "pkg-config")
35 var status
= proc_which
.status
37 error
(null, "Error: program `pkg-config` not found, make sure it is installed.")
43 # Check if the `packages` are known by the external program `pkg-config`
45 # Missing packages are reported to the console via `ToolContext::error`.
46 # Check for errors using `check_errors`.
47 fun check_pkgconfig_packages
(packages
: Array[String])
49 if not pkgconfig_is_available
then return
51 for pkg
in packages
do
52 var proc_exist
= new Process("pkg-config", "--exists", pkg
)
54 var status
= proc_exist
.status
57 "Error: dev package for `{pkg}` unknown by `pkg-config`, install it with `apt-get`, `brew` or similar.")
58 else if status
!= 0 then
60 "Error: something went wrong calling `pkg-config`, make sure it is correctly configured.")
66 # Detects the `pkgconfig` annotation on the module declaration only
67 private class PkgconfigPhase
70 redef fun process_annotated_node
(nmoduledecl
, nat
)
72 # Skip if we are not interested
73 if nat
.name
!= "pkgconfig" then return
75 # Do some validity checks and print errors if the annotation is used incorrectly
76 var modelbuilder
= toolcontext
.modelbuilder
78 if not nmoduledecl
isa AModuledecl then
79 modelbuilder
.error
(nat
, "Syntax Error: only the declaration of modules may use `pkgconfig`.")
84 var nmodule
= nmoduledecl
.parent
.as(AModule)
85 var mmodule
= nmodule
.mmodule
.as(not null)
88 var pkgs
= new Array[String]
93 pkgs
.add
(mmodule
.name
)
96 var pkg
= arg
.as_string
98 modelbuilder
.error
(nat
, "Syntax Error: `pkgconfig` expects its arguments to be the name of the package as String literals.")
107 mmodule
.pkgconfigs
.add pkg