I'm trying to build libsrtp so that I can use it on the iPhone (I intend to use it with libav's implementation of RTP).
My configuration:
./configure
--build='arm-apple-darwin9'
The warning I get when I attempt to call srtp_init():
file was built for unsupported file
format which is not the architecture
being linked (armv7)
Followed by the error:
"_srtp_init", referenced from:
+[Manager initialize:] in Manager.o
Symbol(s) not found
Does anyone know the proper configuration for building the library correctly?
The problem is it's not being built for ARM (or not for the right ARM; you need to look at which compiler is bing invoked with which options, and compare it to one you know is working). Did you do rebuild configure with autoconf? See the GNU build system wiki page for a starting point on how to reconfigure the build for other systems/processors.
FYI, if you find a bug in the configure.in or other parts of libsrtp, please let me know - I'm an author on it with checkin privs.
For general guidelines on cross compiling libraries for iOS I recommend this article:
http://tinsuke.wordpress.com/2011/02/17/how-to-cross-compiling-libraries-for-ios-armv6armv7i386/
The same guy also wrote an updated version for iOS 5. This one is specific to the tesseract library, but the general principles are the same:
http://tinsuke.wordpress.com/2011/11/01/how-to-compile-and-use-tesseract-3-01-on-ios-sdk-5/.
Using these as a guide I've had some success compiling a few libraries. Key things to note are that you have to disable compiling shared binaries. Also I recommend using clang rather than gcc.
Related
I'm currently trying to create an executable for my Vapor application, but I just can't run it on my server.
My expectation was that it would be able to create a single application with all my code and the dependencies. My current references are .NET and Go, where you can create a single executable from the code and deploy this standalone file - which makes it amazingly simple to deploy.
I tried compiling and executing it on Docker, but no such luck - it failed with some libSwift something missing.
So, can Swift do something like this?
Looking forward to your answers
You can build a binary that statically links the standard library or build a completely self contained binary using the static linking flags introduced in Swift 5.3.1 - -static-stdlib and -static-executable. See this forum post for more details.
Note that swift still has some dependencies on ICU and libc so aren't completely portable yet
so what I'm trying to do is utilize a simple Qt application IN eclipse without using the eclipse QT plugin by linking the required libraries through the GCC C++ Linker. However, I have been unable to locate the exact name of the library to use, or which libraries will be necessary. I've located the path of the Qt library my application seems to be accessing, but I continue to get an error when building that just says "-lqt" doesn't exist/can't find, etc.
The reason I'm doing this is because I'm building a simple game in OGRE for a project at the uni and wanted to use a Qt application for the GUI. Well, I didn't necessarily want too, but our professor wishes us to do so. Please don't suggest that I simply embed an Ogre widgit into my Qt application as this isn't an opti
Any ideas?
Thanks <3
Well, if you are using CMake then it should take care of everything provided that you instructed it to do so. phb provided a link to even better instructions.
First step is to instruct the CMake that we need Qt for our project. This is done with (you can specify individual parts that are needed as well):
find_package(Qt4 REQUIRED)
If Qt is not found in the typical locations (e.g. QTDIR is not set) - cmake will fail.
You also have to instruct CMake to use Qt include paths and set certain compiler definitions:
include(${QT_USE_FILE})
add_definitions(${QT_DEFINITIONS})
Finally, for each target you need to tell that you'd like to link with Qt libraries:
target_link_libraries(foo ${QT_LIBRARIES})
You might also want to process your headers and will have to process the user interface files with moc. For the details please refer to the provided links.
In addition to provided links you can have a look at the comments at the top of FindQt4.cmake file.
I understand that Apple doesn't support using dynamic libraries in iPhone applications. But we are working on a in-house application and we have a unique requirement to use the dynamic libraries. Our requirement is to load a dynamic library as part of "iPhone" application start up. I read that DYLD_INSERT_LIBRARIES is meant for this purpose. So I edited the Info.plist and added below entry.
LSEnvironment
DYLD_INSERT_LIBRARIES
#executable_path/sample.dylib
But it does not seem to be working. Can you please let me know your thoughts ? Really appreciate your help in this regard.
Thanks
--Neo
I've found a way to successfully add LC_LOAD_DYLIB load command to a MachO binary using optool.
$ optool install -c load -p "#executable_path/<dylib_path>" -t <executable>
$ otool -L <executable>
When building optool, make sure that build setting OTHER_LDFLAGS includes -ObjC.
optool does not seem to be able to successfully add load commands for arm64 architectures, so you may want to remove arm64 from the binary
$ lipo <input_file> -remove arm64 -output <output_file>
Edit:
There is an open pull request with support for arm64.
I also working on the same problems for last few days. I also didn't succeed to do it the way you try. So I try to launch my app from another app using this link:
Dynamic Library injection
,unfortunately Apple Block running multiple tasks (even on iphone simulators) but you can try maybe you will have more luck. I know its not a answer you expect but maybe it will give you some way to think. Please share if you have some progress.
You "could" load a binary at runtime and you can manipulate xcode settings to make it compile dylibs for iOS. See this answer:
https://stackoverflow.com/a/10509453/784387
Happy to be corrected, but dylibs are not supported and will not work. You need to get the code for the libraries and compile them into a static lib for the arm6/7 architecture. Then you can easily include these libs. There are plenty of examples of static libs and XCode also provides targets for building them.
I am trying to use core-plot and I followed the instruction from the following project page to use it.
http://code.google.com/p/core-plot/wiki/UsingCorePlotInApplications, which is
You can install the SDK with a standard Mac installer package, or by hand. Here is how you install by hand.
Copy the CorePlotSDK directory to ~/Library/SDKs/
Add to your project's .PCH file:
#import < CorePlot/CorePlot.h >
Open Project -> Edit Project Settings and for All Configurations:
3a. Add to Additional SDKS:
$HOME/Library/SDKs/CorePlotSDK/${PLATFORM_NAME}.sdk
3b. Add to Other Linker Flags:
-ObjC -all_load -lCorePlot
Add the QuartzCore framework to the project.
Add a CPGraph to your application.
I went with the SDK install options: I installed it with Mac installer Package, it got installed in the following location /Library/SDKs/iphoneos.sdk and /Library/SDKs/iphonesimulator.sdk
Then i did step 2 as mentioned.
For 3a i added /Library/SDKs/iphonesimulator.sdk
Then i did 3b and then 4.
After that I tried to do a build and see how does it works and i get the following errors:
:1:0 :1:1: warning: "__IPHONE_OS_VERSION_MIN_REQUIRED" redefined
:1:0 :1:1: warning: this is the location of the previous definition
/var/folders/+r/+rBG+BziF1OqK12XNyw1ak+++TM/-Caches-/com.apple.Xcode.502/CompositeSDKs/iphonesimulator-iPhoneSimulator4.1-cztutytisanvsqaptkdkpoyyctln/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:250:0 /var/folders/+r/+rBG+BziF1OqK12XNyw1ak+++TM/-Caches-/com.apple.Xcode.502/CompositeSDKs/iphonesimulator-iPhoneSimulator4.1-cztutytisanvsqaptkdkpoyyctln/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:250: error: syntax error before '^' token
/var/folders/+r/+rBG+BziF1OqK12XNyw1ak+++TM/-Caches-/com.apple.Xcode.502/CompositeSDKs/iphonesimulator-iPhoneSimulator4.1-cztutytisanvsqaptkdkpoyyctln/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:250:0 /var/folders/+r/+rBG+BziF1OqK12XNyw1ak+++TM/-Caches-/com.apple.Xcode.502/CompositeSDKs/iphonesimulator-iPhoneSimulator4.1-cztutytisanvsqaptkdkpoyyctln/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:250: error: 'type name' declared as function returning a function
This appears 20 times. and it points all to UIView.h
There are same question in the stackoverflow and people suggested to change the compiler to 4.2 and for lot of people it worked, but for me the compiler was always set to 4.2 and still I get the same error.
On 3a if do /Library/SDKs/iphoneos.sdk
I get the following error
error: Composite SDK failed: The base SDK uses platform 'iphonesimulator', but an additional SDK uses platform 'iphoneos'. All SDKs must use the same platform (PLATFORM_NAME).
Please help
Finally, I have figured out the solution for this error:
Thanks to the developer on core-plot project and sebastien.leduc a google code user for their help.
I am using CorePlotInstaller_0.2.2.zip, and one important steps that is missing on the installation guide is you have to use LLVM GCC 4.2 and not GCC 4.2.
The other important steps which was little confused me was 3a.
Add to Additional SDKS: $HOME/Library/SDKs/CorePlotSDK/${PLATFORM_NAME}.sdk
Here you have to literally add the above line, I was changing the ${PLATFORM_NAME} with iphoneos or iphonesimulator, but no we don't have to do that.
One last thing if you don't find the sdk on the following path $HOME/Library/SDKs/CorePlotSDK
Check out /Library/SDKs/CorePlotSDK.
I hope this will help people, it took me about a week to figure out with the help of all the people who came forward to help.
I just posted a new version of the Core Plot installer that should resolve this issue. You can download it from http://code.google.com/p/core-plot/downloads/list.
You can choose to install Core Plot for all users or just your account. If you install for all users, change the Additional SDKs path from $HOME/Library/SDKs/CorePlotSDK/${PLATFORM_NAME}.sdk to /Library/SDKs/CorePlotSDK/${PLATFORM_NAME}.sdk.
I integrated core-plot into my application yesterday so it's fresh on my mind. I tried installing the SDK the same way you are and hit the same error. Comments in the google-group recommended NOT going this route, so I went back and installed the source code.
I ended up using the tutorial HERE for the basic steps and sample code. The code doesn't work anymore, but all the broken parts are answered in the comments (including a complete reposting of the code which works on the latest version).
Some stumbling points were that the "-ObjC" and "-all_load" flags were both needed, and when I added the header path the "search recursively" option wasn't checked off. Both these questions and many more are answered in the comments.
I am trying to build lite version of my iPhone application using AdMob. I followed the guidelines here http://www.iphonedevsdk.com/forum/iphone-sdk-development/11358-creating-lite-version-app.html and created two different targets. In the lite version I added a macro called LITEVERSION which I am checking using #ifdef and doing the appropriate things.
But when I build the lite version of the app, I get a linker error
ld: library not found for -lAdMobDevice
collect2: ld returned 1 exit status
However I am able to build the full version without any issues and also noticed that build is working fine (for the fullversion) even if I remove the #ifdef macros. This suggests that the libAdMobSimulator.a library is linking properly for the full version however it fails on the lite version.
Any pointers would be greatly appreciated!
Cheers
Jugs
When I had this problem, the cause was that I'd added the library into Xcode by dragging it in like a regular source file.
The fix was to remove it, and then add it properly using the "Add->Existing Frameworks..." dialogue.
I got similar error as I was using CocoaPods libraries
library not found for -lPods-MyApp
I got the error because I opened xcode project instead of workspace.
I was using CocoaPods, and ran pod install, and that fixed it.
I figured out what he problem was. I just removed all frameworks and libraries and added them back in for both the targets and it worked!
Cheers
I cause this because of a libray libMobClickLibrary.a which is used in youmeng sdk missed. I fix the issued after copy libMobClickLibrary.a to the project floder.
I had the same problem with Google Analytics library. My problem was that I forgot to add the path to the Library Search Paths in my target's build settings. (Target -> Build Settings -> Library Search Paths)