linker-errors

I am using third party frameworks in my native iOS application (bunch of .a libraries). My application is developed with XCode 5 base SDK 7.0. The libraries compile and link fine when the deployment target is 6.1 (library and header search paths are good). However, when I change the deployment target to be 7.0, I get the following linker error: Undefined symbols for architecture i386: "std::string::find_last_of(char const*, unsigned long) const", referenced from: GetExecutionDir(ECTemplateString<char>&, char*, bool) in myLibrary.a(moPlatForm.o) "std::string::find(char const*, unsigned long)

I am trying to build a project using Boost's Asio and I am having some trouble. Initially, I tried to build the project without any additional libraries since everything is supposedly in the header files. The program I am trying to build looks like this: #include <iostream> #include <boost/asio.hpp> #include <boost/date_time/posix_time/posix_time.hpp> int main() { boost::asio::io_service io; boost::asio::deadline_timer t(io, boost::posix_time::seconds(5)); t.wait(); std::cout << "Hello, world!" << std::endl; return 0; } It can be found here on Boost's website. So, initially I just had: -I /usr

I copied some bits of code from apple's documentation - and I got these 2 errors: Undefined symbols for architecture i386: "_kUTTypeImage", referenced from: -[ImagePicker imagePickerController:didFinishPickingMediaWithInfo:] in ImagePicker.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation) What am I doing wrong? EDIT: The code: - (IBAction) showSavedMediaBrowser { [self startMediaBrowserFromViewController: self usingDelegate: (id)self]; } - (BOOL) startMediaBrowserFromViewController: (UIViewController*) controller

I have just dist-upgraded a Debian Weezy machine to run gcc-4.8 from gcc-4.7. Previously the build environment was sane and was compiling normally. Now it gives the following linker errors, with any program (even a trivial hello world): /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 0 has invalid symbol index 11 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 1 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 2 has invalid symbol index 2 /usr/bin/ld: /usr

I'm hoping maybe someone has a quick answer for this but essentially when I turn on optimizations, I get the following error: [elxr] (error) small data area overflow: 0xfff9f6fc (signed) didn't fit in 16 bits while performing relocation in file test_main.o at location __sti___13_test_main_cpp_252229d3+0xc, to reference symbol oe_init_intconn A similar error occurs when I put in this linker directive as well: -auto_sda Their manual doesn't make any mention of this linker error. I'm using Integrity 5.10 This linker error is usually not related to the -Olink optimization -auto_sda . The linker