Various undefined reference solutions during ndk-build
When compiling the network library of Android idrtsp player, the network library references the live555 sub-module library compiled by Android ndk. Various undefined reference to xxxx methods are reported during compilation, however, these methods are stored in the libraries of each module of live555.
I want to see the compiled o file. The o file corresponding to the C file exists. The Android. mk
system can access any data from each other. you can also configure to run different processes and access the databases and files in the data directory of other APK files. just like accessing the data of this program.
For an APK, to use a shared uid, you must take three steps:
1. Add the Android: shareduserid attribute to the manifest node.
2. Add the local_certificate definition in Android. mk.
If the above attribute is added but the local_certificat
function L_A = sova(Ly,G,Lu,ind_dec) % Copyright: Yufei Wu, 1998, MPRG lab, Virginia Tech for academic use% This implements Soft Output Viterbi Algorithm in trace back mode % Input: Ly : Scaled received bits Ly=0.5*L_c*y=(2*a*rate*Eb/N0)*y% G : Code generator for the RSC code in binary matrix form% Lu : Extrinsic information from the previous decoder.% ind_dec: Index of decoder=1/2% (assumed to be terminated in all-zero state/open)% Output: L_A
/Hello/directory. The content of Hello. C is of course the classic helloworld program:
# Include Int main (){Printf ("Hello world! /N ");Return 0;}
3. Write the Android. mk file in the $ (your_android)/external/Hello/directory. This is the standard name of Android makefile. Do not change it. For the format and content of the android. mk file, refer to other existing Android.
several debugging points for shenduos recovery to facilitate development and participation.
1) color modeGenerally, the color mode after a new machine compiles a recovery is mostly incorrect, because many of the current machines are in the 8888 mode, while the default mode in the recovery mode is 565, therefore, the final cause is that the color is incorrect (blue-yellow), and the screen offset jitter occurs when the buttons are pressed.The parameter changes are in recovery/minui/Android.
content of Hello. C is of course the classic helloworld program:
# Include Int main (){Printf ("Hello world! /N ");Return 0;}
3. Write the Android. mk file in the $ (your_android)/development/Hello/directory. This is the standard name of Android makefile. Do not change it. For the format and content of the android. mk file, refer to other existing Android.
/run the APK on the simulator.
However, when the simulator is running, we see the following error message, because the default NDK Project Settings do not support x86.
Figure 5: run the sample application in the simulator
In Eclipse, you can see that the logcat error "hello-jni cannot be loaded" is displayed"
Figure 6: Logcat shows that the native library cannot be loaded
By default, NDK build does not automatically build x86 ABI. We will need to create the component File "Application.
function. The onTestLocalRefOverflow method is the Click Event of the button on the main interface, and the getStrings method is called after the button is clicked, input the number and content of the string, and then return N arrays of the same string length.Next, create a jni directory under the project and create Android. mk, Application. mk and local_ref_overflow_test.c files, Where Android.
disk are checked. If the generation or change of the target file is at least earlier than one of its dependent files, make will execute the corresponding command to update the target file. The target file is not necessarily the final executable file. It can be any intermediate file and can be used as the dependent file of other target files.
Reference other makefiles
Makefile uses the include keyword to include other makefiles, which is similar to the # include in C language. The contained fi
Curl is a well-known software for implementing open source file transfer protocols, including HTTP, HTTPS, FTP, and other commonly used and uncommon protocols. In the official source code of the latest curl version, the android compilation file (Android. mk) is included. However, some work is required to compile the file.
The curl version I use is 7.20.0, And the android source code version is eclair 2.1.First, extract the curl to the external directo
1 Chinese remainder theorem:Set positive integer m1, M2, M3. mk 22, then a congruence equation Group X≡ai (mod mi) i = 1, 2, 3, ..., K has an integer solution, and in mod m = m1* m2 * M3 ... mk solution is unique, that is, any two solution is mod m with the remainder OfSet mi = m/mi; SoBecause mi (i = 1, 2, 3, ...), I! = k) is a multiple of MK, which can go aroun
locally because these files are too large for zookeeper, and the files are copied to the {Nimbus local dir}/stormdist/{topology ID}
Setup-storm-static Write task-component mapping to ZK
Setup-heartbeats Create the ZK directory where tasks can be heartbeat
Nimbus Call Mk-assignment to assign a task to the machine
Tasks include:
Master-code-dir: Used by Supervisor to download the correct jars/configs
Ta
// Simple HungaryAlgorithmTemplate question .. In this example, cows have the largest production capacity in their favorite columns, including n and M. Calculate the maximum output.// If MK [I] = 0, it indicates that no access has been made. If it is set to 1, it indicates that no access has been made.# Include # Include # Include Using namespace STD;Const int maxn = 500;Int MK [maxn];Int NX, NY; // Number
Usage: (makeMtk | mk) [options] project actions [modules]
Options:-T,-tee: Print log information on the standard-out.-O,-opt = bypass_argument_to_make: Pass extra arguments to make.
-H,-help: Print this message and exit.
Projects:One of available projects.
Actions:Listp, listproject: List all available projects.
Check-env: Check if build environment is ready.Check-dep: Check feature dependency.N, new: Clean and perform a full build.C, clean: Clean the
, although not used in the NDK. h file, but it is better to use javah to generate the prototype. Otherwise, java will appear if you accidentally write the standard. lang. unsatisfiedLinkError: Native method not found class error.
D: \ AppWork \ XExample \ workspace \ jnidemo5 \ src> javah com. xcl. jnidemo5.MainActivityD: \ AppWork \ XExample \ workspace \ jnidemo5 \ src> the volume in the dir drive D is the Data volume serial number is 0EC2-012C D: \ AppWork \ XExample \ workspace \ jnidemo5 \
you click Finish, observe the Android project and generate three more folders, as shown in:
4. Compiling Andriod NDK code
Android NDK can be developed in C or C ++, but when C or C ++ is used to develop NDK, the functions provided by the C or C ++ standard library should be used.
5. In the Android. mk file and Application. mk file, you can add the required libraries for NDK programming. For more inf
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