From 7e88ff941c138d8c548716712fab9b799e2a660f Mon Sep 17 00:00:00 2001
From: Ignacio Sanchez Gines <863613+drhelius@users.noreply.github.com>
Date: Thu, 11 Jan 2024 23:39:41 +0100
Subject: [PATCH] [libretro] Fix build with C sources

---
 platforms/libretro/Makefile        |  7 ++--
 platforms/libretro/Makefile.common | 58 +++++++++++++++---------------
 2 files changed, 34 insertions(+), 31 deletions(-)

diff --git a/platforms/libretro/Makefile b/platforms/libretro/Makefile
index cb7ad8ff..6fbbee8c 100644
--- a/platforms/libretro/Makefile
+++ b/platforms/libretro/Makefile
@@ -339,10 +339,13 @@ ifeq ($(STATIC_LINKING), 1)
 else
 	$(CXX) $(fpic) $(SHARED) $(INCLUDES) -o $@ $(OBJECTS) $(LDFLAGS)
 endif
-  
-%.o: %.c
+
+%.o: %.cpp
 	$(CXX) $(CXXFLAGS) $(fpic) -c -o $@ $<
 
+%.o: %.c
+	$(CC) $(CXXFLAGS) $(fpic) -c -o $@ $<
+
 clean:
 	rm -f $(OBJECTS) $(TARGET)
 
diff --git a/platforms/libretro/Makefile.common b/platforms/libretro/Makefile.common
index a5129ff8..22aba96d 100644
--- a/platforms/libretro/Makefile.common
+++ b/platforms/libretro/Makefile.common
@@ -1,29 +1,29 @@
-SOURCES_C   :=
-SOURCES_CXX := $(CORE_DIR)/libretro.cpp \
-               $(SOURCE_DIR)/GearsystemCore.cpp \
-               $(SOURCE_DIR)/Memory.cpp \
-               $(SOURCE_DIR)/Processor.cpp \
-               $(SOURCE_DIR)/Video.cpp \
-               $(SOURCE_DIR)/Audio.cpp \
-               $(SOURCE_DIR)/Input.cpp \
-               $(SOURCE_DIR)/Cartridge.cpp \
-               $(SOURCE_DIR)/MemoryRule.cpp \
-               $(SOURCE_DIR)/CodemastersMemoryRule.cpp \
-               $(SOURCE_DIR)/GameGearIOPorts.cpp \
-               $(SOURCE_DIR)/RomOnlyMemoryRule.cpp \
-               $(SOURCE_DIR)/SegaMemoryRule.cpp \
-               $(SOURCE_DIR)/KoreanMemoryRule.cpp \
-               $(SOURCE_DIR)/MSXMemoryRule.cpp \
-               $(SOURCE_DIR)/SG1000MemoryRule.cpp \
-               $(SOURCE_DIR)/JanggunMemoryRule.cpp \
-               $(SOURCE_DIR)/BootromMemoryRule.cpp \
-               $(SOURCE_DIR)/SmsIOPorts.cpp \
-               $(SOURCE_DIR)/YM2413.cpp \
-               $(SOURCE_DIR)/opcodes.cpp \
-               $(SOURCE_DIR)/opcodes_cb.cpp \
-               $(SOURCE_DIR)/opcodes_ed.cpp \
-               $(SOURCE_DIR)/audio/Blip_Buffer.cpp \
-               $(SOURCE_DIR)/audio/Effects_Buffer.cpp \
-               $(SOURCE_DIR)/audio/Sms_Apu.cpp \
-               $(SOURCE_DIR)/audio/Multi_Buffer.cpp
-               $(SOURCE_DIR)/audio/emu2413/emu2413.cpp \
+SOURCES_C   := $(SOURCE_DIR)/audio/emu2413/emu2413.c
+
+SOURCES_CXX := $(CORE_DIR)/libretro.cpp \
+               $(SOURCE_DIR)/GearsystemCore.cpp \
+               $(SOURCE_DIR)/Memory.cpp \
+               $(SOURCE_DIR)/Processor.cpp \
+               $(SOURCE_DIR)/Video.cpp \
+               $(SOURCE_DIR)/Audio.cpp \
+               $(SOURCE_DIR)/Input.cpp \
+               $(SOURCE_DIR)/Cartridge.cpp \
+               $(SOURCE_DIR)/MemoryRule.cpp \
+               $(SOURCE_DIR)/CodemastersMemoryRule.cpp \
+               $(SOURCE_DIR)/GameGearIOPorts.cpp \
+               $(SOURCE_DIR)/RomOnlyMemoryRule.cpp \
+               $(SOURCE_DIR)/SegaMemoryRule.cpp \
+               $(SOURCE_DIR)/KoreanMemoryRule.cpp \
+               $(SOURCE_DIR)/MSXMemoryRule.cpp \
+               $(SOURCE_DIR)/SG1000MemoryRule.cpp \
+               $(SOURCE_DIR)/JanggunMemoryRule.cpp \
+               $(SOURCE_DIR)/BootromMemoryRule.cpp \
+               $(SOURCE_DIR)/SmsIOPorts.cpp \
+               $(SOURCE_DIR)/YM2413.cpp \
+               $(SOURCE_DIR)/opcodes.cpp \
+               $(SOURCE_DIR)/opcodes_cb.cpp \
+               $(SOURCE_DIR)/opcodes_ed.cpp \
+               $(SOURCE_DIR)/audio/Blip_Buffer.cpp \
+               $(SOURCE_DIR)/audio/Effects_Buffer.cpp \
+               $(SOURCE_DIR)/audio/Sms_Apu.cpp \
+               $(SOURCE_DIR)/audio/Multi_Buffer.cpp