这两天搞kivy 搞得焦头烂额

rt， for android，

用到matplotlib.pyplot.imread，matplotlib没有recipes，试着编译一下问题非常多，换了opencv，编译出现错误：

  Quoted variables like "LIBRARY_OUTPUT_PATH_ROOT" will no longer be
  dereferenced when the policy is set to NEW.  Since the policy is not set
  the OLD behavior will be used.
Call Stack (most recent call first):
  /usr/share/cmake-3.10/Modules/CMakeDetermineSystem.cmake:94 (include)
  CMakeLists.txt:56 (project)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Error: CMake was unable to find a build program corresponding to "Unix Makefiles".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
-- Configuring incomplete, errors occurred!

自己改recipes，加入了一个编译选项，'-DCMAKE_MAKE_PROGRAM=/usr/bin/make'

终于可以了。。。。

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关于字体，群里给出的方案：（还没测试）

1.将需要使用的字体，复制到Python36\Lib\site-packages\kivy\data\fonts
2.修改%homepath%\.kivy\config.ini中的default_font的值，将其中的一个(不能是第一个，因为kivy.core.text.__init__中使用pop(0)移除了第一个)替换为data\font\simsun.ttc等之前复制的字体名。
这样就不需要每次都使用font_name了

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android NDK:No rule to make target

文件：Android.mk

很蛋疼的问题，要是没有空格提示，不股沟，马大哈会疯掉

LOCAL_PATH := $(call my-dir)__

多了两个空格，多了个四个空格。。。

包括之后的几个参数。。。。。细节决定成败

所以，这几个设置最后千万不能有空格

---------------------------------------------------------------------

尝试纯手工编译pywavelets，坑也比较多。。。。

pywavelets主要编译在_extensions 文件夹中，及其下目录c，随便写的，估计libpython2.7用不到

roid/platform/build/dists/myapp/python-install/include/python2.7/
#LOCAL_CFLAGS += -I $(LOCAL_PATH)/../../../../.buildozer/android/platform/build/build/other_builds/numpy/armeabi/numpy/numpy/core/include/
LOCAL_LDFLAGS += -L $(LOCAL_PATH)/../../../../.buildozer/android/platform/build/dists/myapp/libs/armeabi
LOCAL_SHARED_LIBRARIES += python2.7  # This line links to libpython2.7
LOCAL_LDLIBS += -llog             # This line links to the Android log

include $(BUILD_SHARED_LIBRARY)
[19:55 jeroen@jeroen c]$ ls
Android.mk      common.c       convolution.h           cwt.c        

编译了libc_wt.so

之后是_extensions，偷懒复制粘贴的~~

LOCAL_PATH:=$(call my-dir)

include $(CLEAR_VARS)  
LOCAL_MODULE := libpython2.7
LOCAL_SRC_FILES := libpython2.7.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/../../../.buildozer/android/platform/build/dists/myapp/python-install/include/python2.7/
include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)  
LOCAL_MODULE := libc_wt
LOCAL_SRC_FILES := libc_wt.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/c/
include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE    := _cwt
LOCAL_SRC_FILES :=  _cwt.c
LOCAL_CFLAGS := -I$(LOCAL_PATH)/../../../.buildozer/android/platform/build/dists/myapp/private/lib/python2.7/site-packages/numpy/core/include/
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../../../.buildozer/android/platform/build/dists/myapp/python-install/include/python2.7/
LOCAL_SHARED_LIBRARIES := libpython2.7
LOCAL_SHARED_LIBRARIES += libc_wt
include $(BUILD_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE    := _swt
LOCAL_SRC_FILES :=  _swt.c
LOCAL_CFLAGS := -I$(LOCAL_PATH)/../../../.buildozer/android/platform/build/dists/myapp/private/lib/python2.7/site-packages/numpy/core/include/
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../../../.buildozer/android/platform/build/dists/myapp/python-install/include/python2.7/
LOCAL_SHARED_LIBRARIES := libpython2.7
LOCAL_SHARED_LIBRARIES += libc_wt
include $(BUILD_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE    := _dwt
LOCAL_SRC_FILES :=  _dwt.c
LOCAL_CFLAGS := -I$(LOCAL_PATH)/../../../.buildozer/android/platform/build/dists/myapp/private/lib/python2.7/site-packages/numpy/core/include/
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../../../.buildozer/android/platform/build/dists/myapp/python-install/include/python2.7/
LOCAL_SHARED_LIBRARIES := libpython2.7
LOCAL_SHARED_LIBRARIES += libc_wt
include $(BUILD_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE    := _pywt
LOCAL_SRC_FILES :=  _pywt.c
LOCAL_CFLAGS := -I$(LOCAL_PATH)/../../../.buildozer/android/platform/build/dists/myapp/private/lib/python2.7/site-packages/numpy/core/include/
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../../../.buildozer/android/platform/build/dists/myapp/python-install/include/python2.7/
LOCAL_SHARED_LIBRARIES := libpython2.7
LOCAL_SHARED_LIBRARIES += libc_wt
include $(BUILD_SHARED_LIBRARY)

编译这四个*wt.so文件