gm support for linux

Makefile

 # Simple makefile for skia library and test apps
 
 # setup our defaults
 CC := gcc
 GPP := g++
 C_INCLUDES := -Iinclude/config -Iinclude/core -Iinclude/effects -Iinclude/images -Iinclude/ports
 C_INCLUDES +=  -Iinclude/gpu -Iinclude/utils -Igpu/include
 C_INCLUDES +=  -Ithird_party/glu
 
 CFLAGS := -Wall -fstrict-aliasing
@@ skipping 97 matching lines @@
 
     # these are our registry-based factories
         SRC_LIST += src/images/SkImageDecoder_Factory.cpp
         SRC_LIST += src/images/SkImageEncoder_Factory.cpp
         SRC_LIST += src/images/SkImageDecoder_libpng.cpp
     # support files
         SRC_LIST += src/images/SkScaledBitmapSampler.cpp
 ········
         SRC_LIST += gpu/src/mac/GrGLDefaultInterface_mac.cpp
 else
-        LINKER_OPTS += -lpng -lfreetype -lGL
+        LINKER_OPTS += -lpng -lfreetype -lGL -lGLU -lX11
         DEFINES += -DSK_BUILD_FOR_UNIX -DSK_ENABLE_LIBPNG -DGR_LINUX_BUILD=1
 
-    ifeq ($(SKIA_SAMPLES_FOR_X),true)
-        DEFINES += -DSK_SAMPLES_FOR_X
-    endif
+        #Assume the color order for now.
+        DEFINES += -DSK_SAMPLES_FOR_X
+
         # needed for freetype support
         C_INCLUDES += -I/usr/include/freetype2
         SRC_LIST += src/ports/SkFontHost_linux.cpp
         SRC_LIST += src/ports/SkFontHost_gamma_none.cpp
         SRC_LIST += src/ports/SkFontHost_FreeType.cpp
         SRC_LIST += src/ports/SkFontHost_FreeType_Subpixel.cpp
-        SRC_LIST += src/utils/SkEGLContext_none.cpp
+        SRC_LIST += src/utils/unix/SkEGLContext_Unix.cpp
     # these are our registry-based factories
         SRC_LIST += src/images/SkImageDecoder_Factory.cpp
         SRC_LIST += src/images/SkImageEncoder_Factory.cpp
         SRC_LIST += src/images/SkImageDecoder_libpng.cpp
     # support files
         SRC_LIST += src/images/SkScaledBitmapSampler.cpp
 ········
-        SRC_LIST += gpu/src/GrGLDefaultInterface_none.cpp
+        SRC_LIST += gpu/src/unix/GrGLDefaultInterface_unix.cpp
 endif
 
 # For these files, and these files only, compile with -msse2.
 SSE2_OBJS := out/src/opts/SkBlitRow_opts_SSE2.o \
              out/src/opts/SkBitmapProcState_opts_SSE2.o \
              out/src/opts/SkUtils_opts_SSE2.o
 $(SSE2_OBJS) : CFLAGS := $(CFLAGS_SSE2)
 
 out/%.o : %.cpp
         @mkdir -p $(dir $@)
@@ skipping 131 matching lines @@
         @echo "    tests: out/tests/tests"
         @echo "    clean: removes entire out/ directory"
         @echo "    help: this text"
         @echo "Options: (after make, or in bash shell)"
         @echo "    SKIA_DEBUG=true for debug build"
         @echo "    SKIA_SHARED=true for shared-object libskia build"
         @echo "    SKIA_SCALAR=fixed for fixed-point build"
         @echo "    SKIA_BUILD_FOR=mac for mac build (e.g. CG for image decoding)"
         @echo "    SKIA_PDF_SUPPORT=false to disable the pdf generation backend"
         @echo ""