This call is used in position-independent code on x86. It loads the position of the code into the %ebx register, which allows global objects (which have a fixed offset from the code) to be accessed as an offset from that register. Position-independent code is code that can be loaded and executed, unmodified, at different addresses. … Read more
As you can see here, Tomcat creates one class-loader per webapp on your server. Thus, if you have webapp1 and webapp2 that share the same library, then this library will be indeed loaded twice. You can eventually place this library in the common directory (tomcat-dir/common/lib) if it is shared by all webapps that run on … Read more
Update 2: see Andrew G Morgan’s slightly more complicated solution which does work for any GLIBC (that solution is also used in libc.so.6 itself (since forever), which is why you can run it as ./libc.so.6 (it prints version info when invoked that way)). Update 1: this no longer works with newer GLIBC versions: ./a.out: error … Read more
You can uninstall the older versions via Add/Remove Programs. It maintains a different entry for each version.
GNU ld can do that on ELF platforms. Here is how to do it with a linker version script: /* foo.c */ int foo() { return 42; } int bar() { return foo() + 1; } int baz() { return bar() – 1; } gcc -fPIC -shared -o libfoo.so foo.c && nm -D libfoo.so | … Read more
You could just have a common module. common.js: Common = { util: require(‘util’), fs: require(‘fs’), path: require(‘path’) }; module.exports = Common; app.js: var Common = require(‘./common.js’); console.log(Common.util.inspect(Common));
The unix.linux file command is great for this. It can generally detect the target architecture and operating system for a given binary (and has been maintained on and off since 1973. wow!) Of course, if you’re not running under unix/linux – you’re a bit stuck. I’m currently trying to find a java based port that … Read more
OK, I figured it out: this is much more painful than it should be. Until very recently, people at Kitware didn’t understand why anyone would ever want to create a DLL from static libs. Their argument is that there should always be source files in the main (e.g. top_project in my case) directory because it … Read more
is there any way to get a list of the dynamically linked dependency for of a foreign binary You can list direct dependencies of a binary easily enough: readelf -d a.out | grep NEEDED 0x0000000000000001 (NEEDED) Shared library: [librt.so.1] 0x0000000000000001 (NEEDED) Shared library: [libc.so.6] I know of no way to recursively continue this to get … Read more