V1 Readme + rangement

asift_gen/io_png/libs/png/CMakeLists.txt

@@ -0,0 +1,19 @@
+PROJECT(png)
+
+SET(PNG_SRCS
+  pngget.c    pngrio.c    pngwrite.c  png.c       pngmem.c   pngrtran.c  pngtrans.c
+  pngwtran.c  pngerror.c  pngpread.c  pngrutil.c  pngvcrd.c  pngwutil.c  pnggccrd.c
+  pngread.c   pngset.c    pngwio.c    pngconf.h   png.h
+)
+
+IF (WIN32)
+  ADD_DEFINITIONS(-DPNG_STATIC)
+  # TODO(keir): I don't know why, but CMake *refuses* to add this to the
+  # command line flags. After much frustration, I am giving up and leaving the
+  # compile errors. Please, someone who knows CMake, try to fix this.
+  SET (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4996")
+ENDIF (WIN32)
+
+INCLUDE_DIRECTORIES(../zlib)
+ADD_LIBRARY(png ${PNG_SRCS} )
+TARGET_LINK_LIBRARIES(png zlib)