improve find_package and add pkg_config module

1 files changed, 96 insertions, 0 deletions

diff --git a/xmake/modules/lib/detect/pkg_config.lua b/xmake/modules/lib/detect/pkg_config.lua
new file mode 100644
index 000000000..37fee3018
--- /dev/null
+++ b/xmake/modules/lib/detect/pkg_config.lua
@@ -0,0 +1,96 @@
+--!The Make-like Build Utility based on Lua
+--
+-- Licensed to the Apache Software Foundation (ASF) under one
+-- or more contributor license agreements.  See the NOTICE file
+-- distributed with this work for additional information
+-- regarding copyright ownership.  The ASF licenses this file
+-- to you under the Apache License, Version 2.0 (the
+-- "License"); you may not use this file except in compliance
+-- with the License.  You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+-- 
+-- Copyright (C) 2015 - 2017, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        pkg_config.lua
+--
+
+-- imports
+import("detect.tool.find_pkg_config")
+
+-- find package  
+--
+-- @param name  the package name
+-- @param opt   the argument options, {version = true}
+--
+-- @return      {links = {"ssl", "crypto", "z"}, linkdirs = {""}, includedirs = {""}, version = ""}
+--
+-- @code 
+--
+-- local pkginfo = pkg_config.find("openssl")
+-- 
+-- @endcode
+--
+function find(name, opt)
+    
+    -- attempt to add search pathes from pkg-config
+    local pkg_config = find_pkg_config()
+    if not pkg_config then
+        return 
+    end
+
+    -- get libs and cflags
+    local result = nil
+    local flags = try { function () return os.iorunv(pkg_config, {"--libs", "--cflags", name}) end }
+    if flags then
+
+        -- init result
+        result = {}
+        for _, flag in ipairs(flags:split('%s*')) do
+
+            -- get links
+            local link = flag:match("%-l(.*)") 
+            if link then
+                result.links = result.links or {}
+                table.insert(result.links, link)
+            end
+       
+            -- get linkdirs
+            local linkdirs = nil
+            local linkdir = flag:match("%-L(.*)") 
+            if linkdir and os.isdir(linkdir) then
+                result.linkdirs = result.linkdirs or {}
+                table.insert(result.linkdirs, linkdir)
+            end
+       
+            -- get includedirs
+            local includedirs = nil
+            local includedir = flag:match("%-I(.*)") 
+            if includedir and os.isdir(includedir) then
+                result.includedirs = result.includedirs or {}
+                table.insert(result.includedirs, includedir)
+            end
+        end
+    end
+
+    -- find version
+    if opt and opt.version then
+
+        -- get version
+        local version = try { function() return os.iorunv(pkg_config, {"--modversion", name}) end }
+        if version then
+            result = result or {}
+            result.version = version
+        end
+    end
+
+    -- ok?
+    return result
+end