Move makefile into root directory

Requested by @mannol.

Makefile

@@ -0,0 +1,77 @@
+BASE_DIR = $(shell pwd -P)
+CFG_DIR = $(BASE_DIR)/cfg
+
+-include $(CFG_DIR)/global_vars.mk
+
+LIBS = libtoxcore ncursesw libconfig
+
+CFLAGS = -std=gnu99 -pthread -Wall -g
+CFLAGS += '-DTOXICVER="$(VERSION)"' -DHAVE_WIDECHAR -D_XOPEN_SOURCE_EXTENDED -D_FILE_OFFSET_BITS=64
+CFLAGS += '-DPACKAGE_DATADIR="$(abspath $(DATADIR))"'
+CFLAGS += $(USER_CFLAGS)
+LDFLAGS = $(USER_LDFLAGS)
+
+OBJ = chat.o chat_commands.o configdir.o dns.o execute.o file_senders.o notify.o
+OBJ += friendlist.o global_commands.o groupchat.o line_info.o input.o help.o autocomplete.o
+OBJ += log.o misc_tools.o prompt.o settings.o toxic.o toxic_strings.o windows.o message_queue.o
+OBJ += group_commands.o term_mplex.o
+
+# Check on wich system we are running
+UNAME_S = $(shell uname -s)
+ifeq ($(UNAME_S), Linux)
+    -include $(CFG_DIR)/systems/Linux.mk
+endif
+ifeq ($(UNAME_S), FreeBSD)
+    -include $(CFG_DIR)/systems/FreeBSD.mk
+endif
+ifeq ($(UNAME_S), OpenBSD)
+    -include $(CFG_DIR)/systems/FreeBSD.mk
+endif
+ifeq ($(UNAME_S), Darwin)
+    -include $(CFG_DIR)/systems/Darwin.mk
+endif
+ifeq ($(UNAME_S), Solaris)
+    -include $(CFG_DIR)/systems/Solaris.mk
+endif
+
+# Check on which platform we are running
+UNAME_M = $(shell uname -m)
+ifeq ($(UNAME_M), x86_64)
+    -include $(CFG_DIR)/platforms/x86_64.mk
+endif
+ifneq ($(filter %86, $(UNAME_M)),)
+    -include $(CFG_DIR)/platforms/x86.mk
+endif
+ifneq ($(filter arm%, $(UNAME_M)),)
+    -include $(CFG_DIR)/platforms/arm.mk
+endif
+
+# Include all needed checks
+-include $(CFG_DIR)/checks/check_features.mk
+
+# Fix path for object files
+OBJ := $(addprefix $(BUILD_DIR)/, $(OBJ))
+
+# Targets
+all: $(BUILD_DIR)/toxic
+
+$(BUILD_DIR)/toxic: $(OBJ)
+	@echo "  LD    $(@:$(BUILD_DIR)/%=%)"
+	@$(CC) $(CFLAGS) -o $(BUILD_DIR)/toxic $(OBJ) $(LDFLAGS)
+
+$(BUILD_DIR)/%.o: $(SRC_DIR)/%.c
+	@if [ ! -e $(BUILD_DIR) ]; then \
+		mkdir -p $(BUILD_DIR) ;\
+	fi
+	@echo "  CC    $(@:$(BUILD_DIR)/%=%)"
+	@$(CC) $(CFLAGS) -o $(BUILD_DIR)/$*.o -c $(SRC_DIR)/$*.c
+	@$(CC) -MM $(CFLAGS) $(SRC_DIR)/$*.c > $(BUILD_DIR)/$*.d
+
+clean:
+	rm -rf $(BUILD_DIR)
+
+-include $(BUILD_DIR)/$(OBJ:.o=.d)
+
+-include $(CFG_DIR)/targets/*.mk
+
+.PHONY: clean all