csa: add package (#5011)

* csa: add package

* limit plat

packages/c/csa/xmake.lua

@@ -0,0 +1,25 @@
+package("csa")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://epwalsh.github.io/software/csa")
+    set_description("C++ header-only library for Coupled Simulated Annealing")
+    set_license("MIT")
+
+    add_urls("https://github.com/epwalsh/CSA.git")
+    add_versions("2018.05.25", "3d7154fd35c35fb7297e25bd507c5e3f705b1ad6")
+
+    add_deps("openmp")
+
+    on_install("linux", "macosx", "windows", "mingw@msys", function (package)
+        if package:has_tool("cxx", "gxx") then
+            package:add("cxxflags", "-fpermissive")
+        end
+        os.cp("include", package:installdir())
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            void test() {
+                CSA::Solver<double, double> solver;
+            }
+        ]]}, {configs = {languages = "c++11"}, includes = "csa.hpp"}))
+    end)