compilation

I have a auto-generated C++ source file, around 40 MB in size. It largely consists of push_back commands for some vectors and string constants that shall be pushed. When I try to compile this file, g++ exits and says that it couldn't reserve enough virtual memory (around 3 GB). Googling this problem, I found that using the command line switches --param ggc-min-expand=0 --param ggc-min-heapsize=4096 may solve the problem. They, however, only seem to work when optimization is turned on. 1) Is this really the solution that I am looking for? 2) Or is there a faster, better (compiling takes ages

My work has over 24 pages in Latex. I need only the abstract and introduction in pdf. How can you compile only the first two pages? I'd just make a new file with only the abstract and introduction and compile that. Actually, if this is not just a one-time thing, I'd use three files: absintro.tex : \begin{abstract} ... \end{abstract} ...introduction... onlyabsintro.tex : ... \begin{document} \include{absintro.tex} \end{document} fullreport.tex : ... \begin{document} \include{absintro.tex} ...other stuff... \end{document} (Obviously the filenames can be whatever you want, this just shows the

I searched Google for generating machine code of ARM instructions, such as this one Converting very simple ARM instructions to binary/hex The answer referenced ARM7TDMI-S Data Sheet (ARM DDI 0084D). The diagram of data processing instructions is good enough. Unfortunately, it's for ARM instructions, not for Thumb/Thumb-2 instructions. Take the B instruction as an example. ARM Architecture Reference Manual - ARMv7-A and ARMv7-R edition section A8.8.18, Encoding T4: For the assembly code: B 0x50 How can I encode the immediate value 0x50 into the 4-byte machine code? Or if I want to write a C

I installed codesourcery cross compile toolchain for mips32 architecture on my WIN 7 machince. I want to first compile a simple 'factorial' binary for my router which is based on MIPS32. From little search on the internet, I found it is based on MIPS32 big-endian. #cat /proc/cpuinfo system type : 96338W2 processor : 0 cpu model : BCM6338 V1.0 BogoMIPS : 239.20 wait instruction : no microsecond timers : yes tlb_entries : 32 extra interrupt vector : yes hardware watchpoint : no unaligned access : 1269919 VCED exceptions : not available VCEI exceptions : not available # cat /proc/version Linux

It's a variation of code from this tweet , just shorter one and not causing any damage to noobs. We have this code: typedef int (*Function)(); static Function DoSmth; static int Return7() { return 7; } void NeverCalled() { DoSmth = Return7; } int main() { return DoSmth(); } You see that NeverCalled() is never called in the code, don't you? Here's what Compiler Explorer shows when clang 3.8 is selected with -Os -std=c++11 -Wall Code emitted is: NeverCalled(): retq main: movl $7, %eax retq as if NeverCalled() was actually called before DoSmth() and set the DoSmth function pointer to Return7()