compilation

This question already has an answer here: What's an object file in C? 5 answers I was asked a question: "What is an 'object file'?". After looking at Wiki , I only know that it contains objects . But what are those objects and why someone called them that way? Object files (or object code) are machine code files generated by a compiler from source code. The difference with an executable is that the object file isn't linked, so references to functions, symbols, etc aren't defined yet (their memory addresses is basically left blank). When you compile a C file with GCC: gcc -Wall -o test test.c

After reading a lot of documentation regarding Lisp eval-when operator I still can't understand its uses, I know with this operator I can control the evaluation time of my expressions but I can't figure out any example where this may be applicable ? Best Regards, utxeee. Compilation of a Lisp file Take for example the compilation of a Lisp file. The Lisp compiler processes the top-level forms. These can be arbitrary Lisp forms, DEFUNs, DEFMACROS, DEFCLASS, function calls,... The whole story how the file compiler works is too complex to explain here, but a few things: the file compiler

Does linking and loading of the the dynamic libraries both happen at runtime? or is it that only loading of the library happens at run time? See the earlier very good point about the distinction between static linking and dynamic linking. Assuming you are referring to the dynamic linking, then: Both loading and (dynamic) linking are done by the linker – on linux and other Unix-alikes this is done by /lib/ld.so , which is the actual program that is launched by the operating system in almost all cases. ld.so in turn loads your application - mygameBinary into memory, and ld.so then reads from the

How do I remove strings from / obfuscate a compiled binary? The goal is to avoid having people read the names of the functions/methods inside. It is a dynamic library (.so) compiled from C++ code for Android with the NDK tools (includes GCC) I compile with -O3 and already use arm-eabi-strip -g mylib.so to remove debugging symbols, but when I do strings mylib.so all the names of the functions/methods are still readable. These strings are in the dynamic symbol table , which is used when the library is loaded at runtime. readelf -p .dynstr mylib.so will show these entries. strip -g will remove

I compile my own PHP, partly to learn more about how PHP is put together, and partly because I'm always finding I need modules that aren't available by default, and this way I have control over that. My problem is that I can't get JPEG support in PHP. Using CentOS 5.6. Here are my configuration options when compiling PHP 5.3.8 : './configure' '--enable-fpm' '--enable-mbstring' '--with-mysql' '--with-mysqli' '--with-gd' '--with-curl' '--with-mcrypt' '--with-zlib' '--with-pear' '--with-gmp' '--with-xsl' '--enable-zip' '--disable-fileinfo' '--with-jpeg-dir=/usr/lib/' The ./configure output says: