shared-libraries

问题 I used the code below to show the Leaderboard but all i got it the console this cocos2d: surface size: 480x320 the code: - (void)showLeaderboardForCategory:(NSString *)category { // Only execute if OS supports Game Center & player is logged in if (hasGameCenter) { // Create leaderboard view w/ default Game Center style GKLeaderboardViewController *leaderboardController = [[GKLeaderboardViewController alloc] init]; // If view controller was successfully created... if (leaderboardController !=

问题 I am trying to build an application for freebsd which links to a shared object "share.so" built on linux. I also have freebsd linux compatible libraries under /usr/compat/linux/lib. I am able to compile my application. But while linking to "share.so" I am getting bunch of errors as share.so(built on linux) needs to access libraries under "/usr/compat/linux/lib". Is there a way to tell share.so to look into compat linux directory instead of /usr/lib/ /usr/bin/ld: warning: libstdc++.so.6,

问题 I know how to create shared libraries using gcc and ln , but how do I create a shared library using only ld when I have object files (from c++ or c code) as input and how do I swap onto new version of library? 回答1: how do I create a shared library using only ld when I have object files (from c++ or c code) as input You could run gcc -v -shared ... to discover what options gcc passes to ld . You could then pass the same arguments to ld directly, and you should end up with identical result.

问题 Tried to do a search, but didn't find anything. Whenever I try to compile a shared object and the test binary that links to it I get this error: [root@hypervisor test-files]# ./test ./test: symbol lookup error: ./test-files.so: undefined symbol: stat [root@hypervisor test-files]# After playing around with it I found that if I feed -O to gcc during the compile, stat() starts working as expected. I haven't been able to find any indication online as to why -O of all things fixes a problem with

问题 According to the doc, dlopen is used in conjunction with dlsym to load a library, and get a pointer to a symbol. But that's already what the dynamic loader/linker does. Moreover, both methods are based on ld.so. There actually seems to be two differences when using dlopen : The library can be conditionally loaded. The compiler is not aware of the symbols (types, prototypes...) we're using, and thus does not check for potential errors. It's, by the way, a way to achieve introspection. But, it

问题 I am trying an install script for a shared library with cmake. While I found out that I want to use install , I am not sure what's the best practice to set the destinations. This comment* and various bugreports refer to LIB_INSTALL_DIR . However I find hardly any documentation of the LIB_INSTALL_DIR My best guess for a library install would be: add_library(mylib SHARED ${sources}) install(TARGET mylib LIBRARY DESTINATION ${LIB_INSTALL_DIR}) install(FILES ${libheaders} DESTINATION ${??}) My

问题 So I want to mess around with a library I just downloaded called stdlib.jar (downloaded from http://introcs.cs.princeton.edu/java/stdlib/) So I added the library to the project, and when I inspect the project it looks like this in netbeans: So it seems that the library is set up properly. But then in my project when I try to use one of the library classes, it looks like this. Mousing over the import statement at the top, says expected "." And If I change the import statement to say import

问题 So I am using python to call methods in a shared C++ library. I am having an issue returning a double from the C++ to the python. I have a created a toy example that exhibits the problem. Feel free to compile and try it out. Here is the python code (soexample.py): # Python imports from ctypes import CDLL import numpy as np # Open shared CPP library: cpplib=CDLL('./libsoexample.so') cppobj = cpplib.CPPClass_py() # Stuck on converting to short**? x = cpplib.func_py(cppobj) print 'x =', x Here

问题 I have been trying to get a project of mine to run but I have run into trouble. After much debugging I have narrowed down the problem but have no idea how to proceed. Some background, I am using a python script inside C++ code. This is somewhat documented on Python, and I managed to get it running very well in my basic executable. #include and a -lpython2.6 and everything was grand. However, difficulty has arisen when running this python script from a shared library(.so). This shared library

问题 I have two separate libraries (Library A and Library B), I have defined them on the jenkins configuration so they can be both called from the pipeline. From Library A I would like to call some functions/methods that are defined in Library B. My logic tells me that I need to import and probably create an instance of Library B inside Library A before I can have access to any of Library B methods. But I have not been successful. I am no expert in Java, however any guidance is greatly appreciated