libspng: add cmake build

packages/l/libspng/xmake.lua

@@ -1,41 +1,59 @@
 package("libspng")
-
     set_homepage("https://libspng.org")
     set_description("Simple, modern libpng alternative")
+    set_license("BSD-2-Clause")
 
     set_urls("https://github.com/randy408/libspng/archive/refs/tags/$(version).tar.gz",
              "https://github.com/randy408/libspng.git")
+
     add_versions("v0.7.4", "47ec02be6c0a6323044600a9221b049f63e1953faf816903e7383d4dc4234487")
     add_versions("v0.7.1", "0726a4914ad7155028f3baa94027244d439cd2a2fbe8daf780c2150c4c951d8e")
 
+    add_configs("cmake", {description = "Use cmake build system", default = false, type = "boolean"})
+
+    if is_plat("linux", "bsd") then
+        add_syslinks("m")
+    end
+
     add_deps("zlib")
 
     on_load(function (package)
+        if package:config("cmake") then
+            package:add("deps", "cmake")
+        end
         if not package:config("shared") then
             package:add("defines", "SPNG_STATIC")
         end
     end)
 
     on_install(function (package)
-        io.writefile("xmake.lua", [[
-            add_rules("mode.debug", "mode.release")
-            add_requires("zlib")
-            target("spng")
-                set_kind("$(kind)")
-                add_files("spng/*.c")
-                add_headerfiles("spng/*.h")
-                add_packages("zlib")
-                if is_kind("static") then
-                    add_defines("SPNG_STATIC")
-                end
-        ]])
-        local configs = {}
-        if package:config("shared") then
-            configs.kind = "shared"
-        elseif not package:is_plat("windows", "mingw") and package:config("pic") ~= false then
-            configs.cxflags = "-fPIC"
+        if package:config("cmake") then
+            local configs = {"-DBUILD_EXAMPLES=OFF"}
+            table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:is_debug() and "Debug" or "Release"))
+            if package:config("shared") then
+                table.join2(configs, {"-DSPNG_SHARED=ON", "-DSPNG_STATIC=OFF"})
+            else
+                table.join2(configs, {"-DSPNG_SHARED=OFF", "-DSPNG_STATIC=ON"})
+            end
+            import("package.tools.cmake").install(package, configs)
+        else
+            io.writefile("xmake.lua", [[
+                add_rules("mode.debug", "mode.release")
+                add_requires("zlib")
+                target("spng")
+                    set_kind("$(kind)")
+                    add_files("spng/*.c")
+                    add_headerfiles("spng/*.h")
+                    add_packages("zlib")
+                    if is_kind("static") then
+                        add_defines("SPNG_STATIC")
+                    end
+                    if is_plat("linux", "bsd") then
+                        add_syslinks("m")
+                    end
+            ]])
+            import("package.tools.xmake").install(package)
         end
-        import("package.tools.xmake").install(package, configs)
     end)
 
     on_test(function (package)