With Xcode 4, if you include the library project into your app project, then you can add this to the Other Linker Flags: -force_load $(BUILT_PRODUCTS_DIR)/<library_name.a> You still need the dependency, and you need to add the library in the Link Phase list of frameworks and libraries too. EDIT: Apple now says as of some Xcode … Read more
Seems like I’ve figured out what you can do I used NSClassFromString() to check if class is available on device, i.e. if NSClassFromString(“UIBlurEffect”) { let blur = UIBlurEffect(…) //… } else { //… } It’s needed to make UIKit.framework (or another corresponding framework) optional. If you create Swift-based application in XCode6-BetaX, all the frameworks wouldn’t … Read more
See this answer. Is this even the correct approach here No: you can’t use mismatched versions of glibc as your link command does. You used crt0.o and ld-linux.so from new (system-installed) libc, but libc.so.6 from an old (copied from cluster) libc. That is just not going to work.
Interestingly, using -fdata-sections can make the literal pools of your functions, and thus your functions themselves larger. I’ve noticed this on ARM in particular, but it’s likely to be true elsewhere. The binary I was testing only grew by a quarter of a percent, but it did grow. Looking at the disassembly of the changed … Read more
The one-definition rule (3.2, [basic.def.odr]) applies differently to classes and functions: 1 – No translation unit shall contain more than one definition of any variable, function, class type, enumeration type, or template. […] 4 – Every program shall contain exactly one definition of every non-inline function or variable that is odr-used in that program […] … Read more
It looks like there is a nice workaround for this implemented in recent versions of glibc: a “tunables” feature that guides selection of optimized string functions. You can find a general overview of this feature here and the relevant code inside glibc in ifunc-impl-list.c. Here’s how I figured it out. First, I took the address … Read more
GCC can do constant folding for several standard-library functions. Obviously, if the function is folded at compile-time, there is no need for a run-time function call, so no need to link to libm. You could confirm this by taking a looking at the assembler that the compiler produces (using objdump or similar). I guess these … Read more
My development environment is set up as follows: android-ndk-r10d (install path: D:\adt-bundle-windows-x86_64-20140702\android-ndk-r10d\) OpenCV-2.4.10-android-sdk (install path: D:\CODE\OpenCV-2.4.10-android-sdk\), Download link OpenCV-2.4.10 (install path: D:\CODE\OpenCV-2.4.10\), Download link Building the nonfree module We actually only need to copy a few files from OpenCV-2.4.10 source code to OpenCV-2.4.10-android-sdk, namely: Copy the nonfree folder from OpenCV-2.4.10\sources\modules\nonfree\include\opencv2\ to OpenCV-2.4.10-android-sdk\sdk\native\jni\include\opencv2. Create a folder … Read more
Shorter answer: Accessing the “value” of a linker script variable is NOT undefined behavior, and is fine to do, so long as you want the actual data stored at that location in memory and not the address of that memory or the “value” of a linkerscript variable which happens to be seen by C code … Read more
Right click the resource script (.rc file) Choose Import http://msdn.microsoft.com/en-us/library/saced6x2.aspx You can embed any “custom” file you want, as well as things like .bmps and stuff VisualStudio “knows” how to edit. Then you can access them with your framework’s resource functions like FindResource LoadResource etc… If you don’t have a resource script. Click Project Add … Read more