Using a static library in Qt Creator
LIBS += -L[path to lib] -l[name of lib] Note! that filename of lib: lib[nameOfLib].a and you have to pass only original part -l[nameOfLib]
linker
Why does the general program usually start at 0x8000?
In general, on all but the smallest embedded systems, the platform ABI designer wants to avoid ever having the lowest addresses in use so that null pointer dereferences can be trapped. Having several KB of never-valid addresses gives you some additional safety if the null pointer is dereferenced with an array or structure member offset, … Read more
Why is statically linking glibc discouraged?
The reasons given in other answers are correct, but they are not the most important reason. The most important reason why glibc should not be statically linked, is that it makes extensive internal use of dlopen, to load NSS (Name Service Switch) modules and iconv conversions. The modules themselves refer to C library functions. If … Read more
crt0.o and crt1.o — What’s the difference?
Both crt0/crt1 do the same thing, basically do what is needed before calling main() (like initializing stack, setting irqs, etc.). You should link with one or the other but not both. They are not really libraries but really inline assembly code. As far as I understand, crt comes in two “flavors” crt1 is used on … Read more
C++ development on linux – where do I start?
What are recommended guides on creating a make file, how do I compile from this makefile (do I call g++ myself, do I use ‘make’?) You build from the makefile by invoking “make”. And inside your makefile, you compile and link using g++ and ld. Looking at other linux software, they almost always seem to … Read more
Linker error LNK2038: mismatch detected in Release mode
Your app is being compiled in release mode, but you’re linking against the debug version of PCRE, which had /MTd (or similar) set, thus causing the mismatch in iterator debugging level in the CRT. Recompile PCRE in release mode to match your own application. The detect_mismatch pragma in VS 2010 is what causes this error … Read more
Compile a Standalone Static Executable
Use the following flags for linking -static -static-libgcc -static-libstdc++ Use these three flags to link against the static versions of all dependencies (assuming gcc). Note, that in certain situation you don’t necessarily need all three flags, but they don’t “hurt” either. Therefore just turn on all three. Check if it actually worked Make sure that … Read more
Xcode : warning: directory not found for option [duplicate]
In Target > Build Settings: Look for Search Paths > Framework Search Paths, delete all paths which you have been warned; then in Library Search Paths, delete all paths which you have been warned.
How to fix symbol lookup error: undefined symbol errors in a cluster environment
After two dozens of comments to understand the situation, it was found that the libhdf5.so.7 was actually a symlink (with several levels of indirection) to a file that was not shared between the queued processes and the interactive processes. This means even though the symlink itself lies on a shared filesystem, the contents of the … Read more
Difference between modules and shared libraries?
The difference is that you can link to a SHARED library with the linker, but you cannot link to a MODULE with the linker. On some platforms. So… to be fully cross-platform and work everywhere CMake works, you should never do this: # This is a big NO-NO: add_library(mylib MODULE ${srcs}) target_link_libraries(myexe mylib) To be … Read more