fix map flags for package runtimes

Author: waruqi

tests/projects/c++/snippet_runtimes/xmake.lua

@@ -4,7 +4,6 @@ add_requires("bar")
 target("foo")
     set_kind("binary")
     add_files("src/*.cpp")
-    
     add_packages("bar")
 
     on_config(function(target)

xmake/core/package/package.lua

@@ -1283,7 +1283,7 @@ end
 
 -- get the package compiler
 function _instance:compiler(sourcekind)
-    local compilerinst = self:_memcache():get("compiler")
+    local compilerinst = self:_memcache():get2("compiler", sourcekind)
     if not compilerinst then
         if not sourcekind then
             os.raise("please pass sourcekind to the first argument of package:compiler(), e.g. cc, cxx, as")
@@ -1293,21 +1293,24 @@ function _instance:compiler(sourcekind)
             os.raise(errors)
         end
         compilerinst = instance
-        self:_memcache():set("compiler", compilerinst)
+        self:_memcache():set2("compiler", sourcekind, compilerinst)
     end
     return compilerinst
 end
 
 -- get the package linker
 function _instance:linker(targetkind, sourcekinds)
-    local linkerinst = self:_memcache():get("linker")
+    local linkerinst = self:_memcache():get3("linker", targetkind, sourcekinds)
     if not linkerinst then
+        if not sourcekinds then
+            os.raise("please pass sourcekinds to the second argument of package:linker(), e.g. cc, cxx, as")
+        end
         local instance, errors = linker.load(targetkind, sourcekinds, self)
         if not instance then
             os.raise(errors)
         end
         linkerinst = instance
-        self:_memcache():set("linker", linkerinst)
+        self:_memcache():set3("linker", targetkind, sourcekinds, linkerinst)
     end
     return linkerinst
 end
@@ -2371,7 +2374,11 @@ function _instance:_generate_build_configs(configs, opt)
         end
     end
     if runtimes then
+        -- @note we need to patch package:sourcekinds(), because it wiil be called nf_runtime for gcc/clang
         local sourcekind = opt.sourcekind or "cxx"
+        self.sourcekinds = function (self)
+            return sourcekind
+        end
         local compiler = self:compiler(sourcekind)
         local cxflags = compiler:map_flags("runtime", runtimes, {target = self})
         configs.cxflags = table.wrap(configs.cxflags)
@@ -2384,6 +2391,7 @@ function _instance:_generate_build_configs(configs, opt)
         local shflags = self:linker("shared", sourcekind):map_flags("runtime", runtimes, {target = self})
         configs.shflags = table.wrap(configs.shflags)
         table.join2(configs.shflags, shflags)
+        self.sourcekinds = nil
     end
     if self:config("lto") then
         local configs_lto = self:_generate_lto_configs(opt.sourcekind or "cxx")