When Android integrates a new product, considerations for lunch's product name and device name
In the Android system lunch, the current Product process includes the following parts:
1. lunch: Determine TARGET_PRODUCT. Generally, the vendorsetup. sh script in the vendor/device/build/target/product contains user/eng/userdebug, respectively.
2. check the rationality of product development.
By loading the AndroidProduct. mk file in the vendor/device/build
the core of the android compilation system is the make introduced at the end of Chapter 1st. Based on this, a compilation framework suitable for Android is established. MK files, shell scripts, and Python scripts are combined. The system modules of the framework can be compiled or packaged separately, or integrated and packaged according to certain rules; the core design theories of the framework are as follows:
build on make, define vario
files:
1. A set of cross-compilation tools, including compilers and connectors, can be used to generate arm binary files on Linux, OS X and windows (through cygwin) platforms.
2. A set of system header files corresponding to the stable local API list supported by the Android platform are described in the file docs/STABLE-APIS.TXT. The stable API here refers to the APIs that can be supported by the current and later versions, because most local system libraries are not static in Android system i
// ******************* Class MK header file. h **************************
# If! Defined (afx_mk_h%b024d48f_090a_4f6f_a199_%6df699b3%included _)
# Define afx_mk_h1_b024d48f_090a_4f6f_a199_4156df699b31_encoded _
# If _ msc_ver> 1000# Pragma once# Endif // _ msc_ver> 1000# Include "winable. H"
Class mk{Public:MK ();
Static void key (byte K, int mseconds = 0); // press a key.// Delay time of the next operatio
Cocos2d-x Game Development Limited state Machine (FSM) (ii) 1 state modeState is the base class for States. It is actually an interface, it has 3 implementation classes, each corresponding to each state. The monkey class only needs to maintain the State class, and the specific behavior is done through 3 implementation classes. This is polymorphism. The following is the complete code:2 State base classstate.h//#ifndef state_h_#define state_h_class monkey;struct state{ virtual void execute (Monk
transferred per state is O (n),
The time for each state transfer is O (1), and the total time complexity of the algorithm is O (p*n^2).
The following is the optimization of the algorithm
First the state transfer equation of this topic let me guess whether it also satisfies monotonicity
IE S[i-1,j]
First we prove that the function W satisfies the quadrilateral inequalities, i.e.
W[i,j]+w[i ', J ']
Set y= (i ' +j)/2 z= (I+J ')/2
The following can be discussed in two situations, z
Proof can ref
Multinomial distribution
The corresponding multivariate distribution can be obtained by extending the two-yuan case of two-yuan distribution to multiple variables.
First, the Bernoulli distribution is extended to the multivariate hypothesis for the discrete variable x x, there may be K K, then x x observation is represented as a vector, and satisfies ∑kk=1xk=1∑k=1kxk=1, only one dimension of the value of 1 1, the other is 0 0. So the probability mass function of x x is: P (x|μ) =πkk=1μxkk P (x|μ
[Android] MTK Android compilation command, androidmtk
Command Format:./maketek [option] [project] [action] [modules] Option: -T,-tee: Output log information to the current terminal -O,-opt = ...... : Compile additional conditions. Generally, use-opt = TARGET_BUILD_VARIANT = user to compile the user board software. -H, help: print the help information and exit Project: Project name, for example, basicom72_wet_jb3 Action: N, new: recompile the entire project C. clean: clears the file and l
Modify:
Android2.3.4 _ gb_t34/build/CORE/Main. mk
# Ifneq (64, $ (findstring 64, $ (build_arch) // open this Annotation
Ifneq (i686, $ (findstring i686, $ (build_arch) // annotate this line$ (Warning ************************************* ***********************)$ (Warning you are attempting to build on a 32-bit system .)$ (Warning only 64-bit build environments are supported beyond froyo/2.2 .)
$ (Warning ***********************************
other extensions can also be well processed (see Docs/ANDROID-MK.TXT files ).
You can store your source files in different locations as long as you create $ ndk/sources/
3.3 compile the Android. mk compilation script:----------------------
The android. mk file is a small compilation script. You can write it to describe the source file to the ndk compilation system. Their syntax is described in detail in th
The android compiling environment is complex, and unlike the normal compiling environment: Only makefile files are available in the top-level directory, while each other component uses the unified standard android. mk. android. the MK file itself is relatively simple, but it is not a familiar makefile, but a lot of processing through the android compilation system. Therefore, it is still complicated to unde
Tags: des style http color io using ar strong fileMySQL is a complex system that requires many tools to repair, diagnose and optimize it. Fortunately for administrators, MySQL has attracted many software developers to launch high-quality open source tools to address the complexities, performance and stability of MySQL systems, most of which are free-to-provide communities. From single-machine to multiple-node environments, the following 10 open source tools are more useful for anyone using MySQL
, do you have more requirements? Compile it by yourself...
4. debugging is really difficult. In Windows, the gdb connection debugging is only successful once, and the rest are inexplicably stuck. Use the log for the time being. It is also convenient, because it is a library that has been properly run on Win32 and WM, so there are not many debugging tasks.
2. Android. mk and application. mk
The help documen
This article describes how to use Android ndk (r7) to set the android local code compilation tool chain and how to compile Android based on makefile. MK, and uses FFMPEG (0.8.5) as an example to describe how to use this tool chain port. The compiled library file can be used to call the FFMPEG decoding library through a local C/C ++ program, or the JNI interface can be compiled to call ffmepg using a Java program.
We all know that the general steps for
Starting with the run make-f config,mk file, config,mk as the current makefile file. will be make parsing, general make parsing makefile file flow is first loaded in the various other MK files included, the same time in the loading process will initialize their own defined variables, similar to precompilation, after the completion of various initialization, deter
the config. sh script file$ Chmod + x config. sh$./Config. shIf the configuration is correct, the last two lines are shown as follows:License: nonfree and unredistributableCreating config. mak and config. h...3) EDIT config. h fileEdit the config. h file in the/root/ffmpeg/jni/ffmpeg-0.6.1 directory,Change # define restrict to # define restrictSet# Define HAVE_LLRINT 0# Define HAVE_LLRINTF 0# Define HAVE_LRINT 0# Define HAVE_LRINTF 0# Define HAVE_ROUND 0# Define HAVE_ROUNDF 0# Define HAVE_TRUNC
the objtree, that is, the custom target storage directory.Srctree: = $ (curdir) # assign the current source code directory $ (curdir) to srctreeTopdir: = $ (srctree) # assign the current source code directory $ (curdir) to topdirLndir: =$ (objtree) # store the generated directory fileExport topdir srctree objtree
Mkconfig: = $ (srctree)/mkconfig # defines the variable mkconfig: this variable points to a script, that is, mkconfig in the directory where the top source code is located.Export mkcon
experience.Gossip, ten essential MySQL tools recommended to start.MySQL essential tool First bit: Mk-query-digestNothing is more maddening than the poor performance of MySQL. While it is often subconsciously assumed that a lag in hardware configuration is causing such problems, the truth is that in most cases the real crux is not here. Poor performance is often caused by some slow-performing queries blocking the flow of other query instructions, resu
1. Samsung Gear SWithout a doubt the year of the smartwatch, buoyed by the release of Android Wear and a slew of devices built to Run it. The Gear S isn ' t one of those products; It ' s instead based on Tizen. From there, it further sets itself apart from the other Samsung Gear devices in the It can be used as a full-fledged phone. But would, want to? Sure, it ' s comfortable, but it's also super chunky-like wearing a shrunken-down Galaxy S5 on your
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