add capstone (#143)

* add capstone

* modify capstone remove addenv(PATH, lib)

packages/c/capstone/xmake.lua

@@ -0,0 +1,27 @@
+package("capstone")
+    set_homepage("http://www.capstone-engine.org")
+    set_description("Disassembly framework with the target of becoming the ultimate disasm engine for binary analysis and reversing in the security community.")
+    add_urls("https://github.com/aquynh/capstone/archive/$(version).tar.gz")
+
+    add_versions("4.0.2", "7c81d798022f81e7507f1a60d6817f63aa76e489aa4e7055255f21a22f5e526a")
+    add_deps("cmake")
+
+    on_load(function (package)
+        package:addenv("PATH", "bin")
+    end)
+
+    on_install("windows", "linux", "macosx", "iphoneos", "mingw", "android", "msys", "bsd", function (package)
+        local configs = {"-DCAPSTONE_BUILD_CSTOOL=ON", "-DCAPSTONE_BUILD_TESTS=OFF"}
+        table.insert(configs, "-DCAPSTONE_BUILD_STATIC=" .. (package:config("shared") and "OFF" or "ON"))
+        table.insert(configs, "-DCAPSTONE_BUILD_SHARED=" .. (package:config("shared") and "ON" or "OFF"))
+        io.gsub("CMakeLists.txt", "CAPSTONE_BUILD_SHARED AND CAPSTONE_BUILD_CSTOOL", "CAPSTONE_BUILD_CSTOOL")
+        import("package.tools.cmake").install(package, configs)
+        os.cp("include", package:installdir())
+    end)
+
+    on_test(function (package)
+        if package:is_plat(os.host()) then
+            os.vrun("cstool -v")
+        end
+        assert(package:has_cfuncs("cs_version", {includes = "capstone/capstone.h"}))
+    end)