add swig.c and swig.cpp rules

5 files changed, 116 insertions, 2 deletions

diff --git a/tests/projects/swig/python_c/src/example.c b/tests/projects/swig/python_c/src/example.c
new file mode 100644
index 000000000..31c659bfa
--- /dev/null
+++ b/tests/projects/swig/python_c/src/example.c
@@ -0,0 +1,14 @@
+double My_variable = 3.0;
+
+/* Compute factorial of n */
+int fact(int n) {
+  if (n <= 1)
+    return 1;
+  else
+    return n*fact(n-1);
+}
+
+/* Compute n mod m */
+int my_mod(int n, int m) {
+  return(n % m);
+}
diff --git a/tests/projects/swig/python_c/src/example.i b/tests/projects/swig/python_c/src/example.i
new file mode 100644
index 000000000..34193edc7
--- /dev/null
+++ b/tests/projects/swig/python_c/src/example.i
@@ -0,0 +1,11 @@
+%module example
+%{
+/* Put headers and other declarations here */
+extern double My_variable;
+extern int    fact(int);
+extern int    my_mod(int n, int m);
+%}
+
+extern double My_variable;
+extern int    fact(int);
+extern int    my_mod(int n, int m);
diff --git a/tests/projects/swig/python_c/xmake.lua b/tests/projects/swig/python_c/xmake.lua
new file mode 100644
index 000000000..2b30079b6
--- /dev/null
+++ b/tests/projects/swig/python_c/xmake.lua
@@ -0,0 +1,8 @@
+add_rules("mode.release", "mode.debug")
+add_requires("python 3.x")
+
+target("example")
+    add_rules("swig.c")
+    add_files("src/example.i", {moduletype = "python"})
+    add_files("src/example.c")
+    add_packages("python")
diff --git a/xmake/rules/swig/build_module_file.lua b/xmake/rules/swig/build_module_file.lua
new file mode 100644
index 000000000..edcd6b04b
--- /dev/null
+++ b/xmake/rules/swig/build_module_file.lua
@@ -0,0 +1,58 @@
+--!A cross-platform build utility based on Lua
+--
+-- Licensed 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-present, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        build_module_file.lua
+--
+
+-- imports
+import("lib.detect.find_tool")
+
+function main(target, batchcmds, sourcefile, opt)
+
+    -- get module type
+    opt = opt or {}
+    local moduletype
+    local fileconfig = target:fileconfig(sourcefile)
+    if fileconfig then
+        moduletype = fileconfig.moduletype
+    end
+    assert(moduletype, "%s: unknown swig module type, please use `add_files(\"foo.c\", {moduletype = \"python\"})` to set it!", sourcefile)
+
+    -- get swig
+    local swig = assert(find_tool("swig"), "swig not found!")
+    local sourcefile_cx = path.join(target:autogendir(), "rules", "swig", path.basename(sourcefile) .. (opt.sourcekind == "cxx" and ".cpp" or ".c"))
+
+    -- add objectfile
+    local objectfile = target:objectfile(sourcefile_cx)
+    table.insert(target:objectfiles(), objectfile)
+
+    -- add commands
+    local argv = {"-" .. moduletype, "-o", sourcefile_cx}
+    if opt.sourcekind == "cxx" then
+        table.insert(argv, "-c++")
+    end
+    table.insert(argv, sourcefile)
+    batchcmds:show_progress(opt.progress, "${color.build.object}compiling.swig.%s %s", moduletype, sourcefile)
+    batchcmds:mkdir(path.directory(sourcefile_cx))
+    batchcmds:vrunv(swig.program, argv)
+    batchcmds:compile(sourcefile_cx, objectfile)
+
+    -- add deps
+    batchcmds:add_depfiles(sourcefile)
+    batchcmds:set_depmtime(os.mtime(objectfile))
+    batchcmds:set_depcache(target:dependfile(objectfile))
+end
diff --git a/xmake/rules/swig/xmake.lua b/xmake/rules/swig/xmake.lua
index 4ac852e48..1756cf1c9 100644
--- a/xmake/rules/swig/xmake.lua
+++ b/xmake/rules/swig/xmake.lua
@@ -18,9 +18,32 @@
 -- @file        xmake.lua
 --
 
-rule("swig")
-    set_extensions(".i")
+-- references:
+--
+-- https://github.com/xmake-io/xmake/issues/1622
+-- http://www.swig.org/Doc4.0/SWIGDocumentation.html#Introduction_nn4
+--
+
+rule("swig.base")
     on_load(function (target)
+        target:set("kind", "shared")
+        if target:is_plat("windows") then
+            target:set("extension", ".pyd")
+        end
+    end)
+
+rule("swig.c")
+    set_extensions(".i")
+    add_deps("swig.base")
+    on_buildcmd_file(function (target, batchcmds, sourcefile, opt)
+        import("build_module_file")(target, batchcmds, sourcefile, table.join({sourcekind = "cc"}, opt))
+    end)
+
+rule("swig.cpp")
+    set_extensions(".i")
+    add_deps("swig.base")
+    on_buildcmd_file(function (target, batchcmds, sourcefile, opt)
+        import("build_module_file")(target, batchcmds, sourcefile, table.join({sourcekind = "cxx"}, opt))
     end)