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
Try giving the offset to addr2line, along with the section name. Like this: addr2line -j .text -e libtst.so 0x26887 Edit: By the way, if it wasn’t clear, the 0x26887 comes from what you provided: 0xb77dc887(fun2 addr+offset)-0xb77b6000 (lib starting addr) = 0x26887 (result)
When you ship a binary, it’s good to provide means for the users to accommodate the binary to the specifics of their own system, among other things, adjusting library search paths. A user can generally tweak LD_LIBRARY_PATH and /etc/ld.so.conf, both of which are with lower precedence than DT_RPATH, i.e. you can’t override what is hardcoded … Read more
Most probably one of your js files is missing a ; at the end. Open up the one you believe is causing the error and add a ; at the end, or add a ; to the very first line of the next js file.
You’ll need to use extra-lib-dirs and extra-libraries in the executable section of your .cabal file like so: name: MyApp version: 0.1.0.0 synopsis: homepage: author: simon.bourne category: build-type: Simple cabal-version: >=1.10 library exposed-modules: HelloWorld build-depends: base >= 4.7 && < 5 hs-source-dirs: src default-language: Haskell2010 executable MyApp main-is: Main.hs extra-lib-dirs: lib extra-libraries: helloWorld build-depends: base >= … Read more
Why is it, that ld MUST be able to locate liba.so when linking test? Because to me it doesn’t seem like ld is doing much else than confirming liba.so‘s existence. For instance, running readelf –dynamic ./test only lists libb.so as needed, so I guess the dynamic linker must discover the libb.so -> liba.so dependency on … Read more
Found by experimentation, and inspecting the command lines generated by Xcode for a reference rpath demo project by Dave Driblin: otool -L shows you the install name of the linked libraries. To get @rpath to work, you need to change the install name of the library: $ gcc -dynamiclib blah.o -install_name @rpath/t/libblah.dylib -o libblah.dylib $ … Read more
What is a DSO? A DSO is a Dynamic Shared Object, or less formally a shared library. What is a hidden symbol? A hidden symbol is a symbol (i.e. name of function or data object) that has been compiled with hidden linkage, e.g. as per the (GCC specific) declaration: int x __attribute__ ((visibility (“hidden”))); If … Read more
If you are on Linux, there is a handy utility nm to list the content of a shared library (there is always a handy utility on Linux, especially for C stuff). Here is the question about it. You use it with the -D flag: nm -D ./libMyLib.so
What worked for me was: gcc -L. -l:myfile.so