Build rules for Genode platform

Makefile

@@ -276,6 +276,18 @@ include $(DEVKITPRO)/libnx/switch_rules
     CFLAGS += -std=gnu11
     STATIC_LINKING = 1
 
+else ifeq ($(platform), genode)
+   TARGET   := $(TARGET_NAME)_libretro.lib.so
+   CC       := $(shell pkg-config genode-base --variable=cc)
+   CXX      := $(shell pkg-config genode-base --variable=cxx)
+   LD       := $(shell pkg-config genode-base --variable=ld)
+   AR       := $(shell pkg-config genode-base --variable=ar) -rcs
+   CFLAGS   += $(shell pkg-config --cflags genode-libc)
+   CXXFLAGS += $(shell pkg-config --cflags genode-stdcxx)
+   LDFLAGS  += -shared --version-script=$(CORE_DIR)/libretro/link.T
+   LDFLAGS  += $(shell pkg-config --libs genode-lib genode-libc genode-stdcxx)
+   LIBS =
+
 else ifneq (,$(findstring armv,$(platform)))
    TARGET := $(TARGET_NAME)_libretro.so
    fpic := -fPIC
@@ -527,14 +539,16 @@ else
 	LD = link.exe
 endif
 else
+ifneq ($(platform),genode)
 	LD = $(CXX)
 endif
+endif
 
 %.o: %.c
 	$(CC) $(CFLAGS) -c $(OBJOUT)$@ $<
 
 %.o: %.cpp
-	$(CXX) $(CFLAGS) -c $(OBJOUT)$@ $<
+	$(CXX) $(CFLAGS) $(CXXFLAGS) -c $(OBJOUT)$@ $<
 
 ifeq ($(platform), theos_ios)
 COMMON_FLAGS := -DIOS -DARM $(COMMON_DEFINES) -I$(THEOS_INCLUDE_PATH) -Wno-error
@@ -549,7 +563,7 @@ $(TARGET): $(OBJECTS)
 ifeq ($(STATIC_LINKING), 1)
 	$(AR) rcs $@ $(OBJECTS)
 else
-	$(LD) $(fpic) $(SHARED) $(LDFLAGS) $(LINKOUT)$@ $(OBJECTS) $(LIBS)
+	$(LD) $(fpic) $(SHARED) $(LINKOUT)$@ $(OBJECTS) $(LDFLAGS) $(LIBS)
 endif