[Travis] Fixed caching

Stopped using the wii_rules.

.travis.yml

@@ -1,8 +1,8 @@
-language: c
-sudo: false
+language: cpp
 
-os:
-  - linux
+os: linux
+sudo: false
+dist: trusty
 
 env:
   global:
@@ -10,7 +10,7 @@ env:
 
 cache:
   directories:
-    - ${DEVKITPRO}
+    - "$HOME/.local"
 
 addons:
   apt:

Makefile

@@ -8,10 +8,19 @@ ifeq ($(strip $(DEVKITPRO)),)
 $(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>devkitPRO")
 endif
 
-include $(DEVKITPPC)/wii_rules
-
+export PATH			:=	$(DEVKITPPC)/bin:$(PORTLIBS)/bin:$(PATH)
 export PORTLIBS		:=	$(DEVKITPRO)/portlibs/ppc
 
+PREFIX	:=	powerpc-eabi-
+
+export AS	:=	$(PREFIX)as
+export CC	:=	$(PREFIX)gcc
+export CXX	:=	$(PREFIX)g++
+export AR	:=	$(PREFIX)ar
+export OBJCOPY	:=	$(PREFIX)objcopy
+
+include $(DEVKITPPC)/base_rules
+
 #---------------------------------------------------------------------------------
 # BUILD is the directory where object files & intermediate files will be placed
 # SOURCES is a list of directories containing source code