improve python3

packages/p/pybind11/xmake.lua

@@ -0,0 +1,30 @@
+package("pybind11")
+
+    set_homepage("https://github.com/pybind/pybind11")
+    set_description("Seamless operability between C++11 and Python.")
+
+    set_urls("https://github.com/pybind/pybind11/archive/v$(version).zip",
+             "https://github.com/pybind/pybind11.git")
+
+    add_deps("python 3.x")
+
+    add_versions("2.5.0", "1859f121837f6c41b0c6223d617b85a63f2f72132bae3135a2aa290582d61520")
+
+    on_install(function (package)
+        os.cp("include", package:installdir())
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <pybind11/pybind11.h>
+            int add(int i, int j) {
+                return i + j;
+            }
+            namespace py = pybind11;
+            PYBIND11_PLUGIN(example) {
+                py::module m("example", "pybind11 example plugin");
+                m.def("add", &add, "A function which adds two numbers");
+                return m.ptr();
+            }
+        ]]}, {configs = {languages = "c++11"}}))
+    end)

packages/p/python/xmake.lua

@@ -124,6 +124,38 @@ package("python")
             io.gsub("Lib/ctypes/macholib/dyld.py", "DEFAULT_LIBRARY_FALLBACK = %[", format("DEFAULT_LIBRARY_FALLBACK = [ '%s/lib',", package:installdir()))
         end
 
+        -- add flags
+        local cflags = {}
+        local ldflags = {}
+        if package:is_plat("macosx") then
+            local xcode_dir     = get_config("xcode")
+            local xcode_sdkver  = get_config("xcode_sdkver")
+            if xcode_dir and xcode_sdkver then
+                -- help Python's build system (setuptools/pip) to build things on SDK-based systems
+                -- the setup.py looks at "-isysroot" to get the sysroot (and not at --sysroot)
+                local xcode_sdkdir = xcode_dir .. "/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX" .. xcode_sdkver .. ".sdk"
+                table.insert(cflags, "-isysroot " .. xcode_sdkdir)
+                table.insert(cflags, "-I" .. path.join(xcode_sdkdir, "/usr/include"))
+                table.insert(ldflags, "-isysroot " .. xcode_sdkdir)
+
+                -- for the Xlib.h, Python needs this header dir with the system Tk
+                -- yep, this needs the absolute path where zlib needed a path relative to the SDK.
+                table.insert(cflags, "-I" .. path.join(xcode_sdkdir, "/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers"))
+            end
+    
+            -- avoid linking to libgcc https://mail.python.org/pipermail/python-dev/2012-February/116205.html
+            local target_minver = get_config("target_minver")
+            if target_minver then
+                table.insert(configs, "MACOSX_DEPLOYMENT_TARGET=" .. target_minver)
+            end
+        end
+        if #cflags > 0 then
+            table.insert(configs, "CFLAGS=" .. table.concat(cflags, " "))
+        end
+        if #ldflags > 0 then
+            table.insert(configs, "LDFLAGS=" .. table.concat(ldflags, " "))
+        end
+
         -- unset these so that installing pip and setuptools puts them where we want
         -- and not into some other Python the user has installed.
         import("package.tools.autoconf").configure(package, configs, {envs = {PYTHONHOME = "", PYTHONPATH = ""}})