“ld: unknown option: -soname” on OS X
I had a similar issue on OS X which I resolved using the the install_name switch instead of soname. gcc -shared <files> -lc -Wl,-install_name,<libname>.so, -o <libname>.so.1
shared-libraries
undefined reference to symbol even when nm indicates that this symbol is present in the shared library
Libraries must be listed after the objects that use them (more precisely, a library will be used only if it contains a symbol that satisfies an undefined reference known at the time it is encountered). Move the -lmnl to the end of the command.
Linking a shared library against a static library: must the static library be compiled differently than if an application were linking it?
You do not have to use PIC code in shared objects (as you have discovered you can use the -mimpure-text option to allow that). That said, non-PIC code in shared objects are more heavyweight. With PIC code, the text pages in memory are just direct memory mappings of the text pages on disk. This means … Read more
How can LD_LIBRARY_PATH be changed within CMake?
You can set the runtime shared library search path using the -rpath linker option: SET(CMAKE_EXE_LINKER_FLAGS “${CMAKE_EXE_LINKER_FLAGS} -Wl,-rpath -Wl,/usr/local/lib”)
What is the difference between LD_LIBRARY_PATH and -L at link time?
There are two answers to this question, part of the answer lies in the compile-time linking (i.e gcc -lfoo -L/usr/lib … which in turn calls ld), and run-time linker lookups. When you compile your program, the compiler checks syntax, and then the linker ensures that the symbols required for execution exist (i.e variables / methods … Read more
LD_PRELOAD equivalent for Windows to preload shared libraries
AppInit_DLLs. http://support.microsoft.com/kb/197571 But see also: AppInit_DLLs should be renamed Deadlock_Or_Crash_Randomly_DLLs AppInit_DLLs should be renamed Deadlock_Or_Crash_Randomly_DLLs You may also want to look into “DLL Injection”. Four approaches (including AppInint_DLLs) are described here: http://en.wikipedia.org/wiki/DLL_Injection
nm symbol output t vs T in a shared so library
Any idea about what I might be doing wrong? The t function is indeed local to the library. This could happen due to a number or reasons. The most likely ones are: You declared the function static, or You compiled the library with -fvisibility=hidden and did not have __attribute__((visibility(“default”))) on the function, or You linked … Read more
How to recover after deleting the symbolic link libc.so.6?
You could simply run ldconfig. Most distributions ship this as a static binary.
libpython2.7.so.1.0: cannot open shared object file: No such file or directory
Try to find file libpython2.7.so.1.0: locate libpython2.7.so.1.0 In my case, it show out put: /opt/rh/python27/root/usr/lib64/libpython2.7.so.1.0 Then paste line /opt/rh/python27/root/usr/lib64 to file /etc/ld.so.conf And run ldconfig. It solved my problem. Goodluck!
Why is CMake designed so that it removes runtime path when installing
You may want to look into CMake’s RPATH handling settings This quote in particular seems relevant to your predicament: By default if you don’t change any RPATH related settings, CMake will link the executables and shared libraries with full RPATH to all used libraries in the build tree. When installing, it will clear the RPATH … Read more