compilation

问题 I am having an issue with compiling one of the sample (example codes) for a C++ based jwt library from a github project: jwt-cpp I cloned it and compiled it using the steps provided in the README file, which seemed successful. After that I did a ldconfig . Now, I am trying to build the example code. #include <iostream> #include "jwt/jwt_all.h" using json = nlohmann::json; int main() { // Setup a signer HS256Validator signer("secret!"); // Create the json payload that expires 01/01/2017 @ 12

问题 Is there an easy way to map to LLVM instructions from their associated assembly instructions in the output binary? Given an instruction in an x86 binary, I would like to be able to determine with which LLVM IR instruction it is associated. One possibility would be to compile the binary with debug symbols turned on and then associate the instructions based off of source code line, but that seems like a hack and is prone to having a many-to-many mapping between x86 and LLVM IR when ideally it

问题 Is there an easy way to map to LLVM instructions from their associated assembly instructions in the output binary? Given an instruction in an x86 binary, I would like to be able to determine with which LLVM IR instruction it is associated. One possibility would be to compile the binary with debug symbols turned on and then associate the instructions based off of source code line, but that seems like a hack and is prone to having a many-to-many mapping between x86 and LLVM IR when ideally it

问题 I am trying to use ILASM and the process seems to abort with the following message: ***** FAILURE ***** How can I find out why it has failed? Can I turn on verbose messages or is there a log file I can look at? 回答1: While I realise that this is probably too late to help the question author now, I will leave these details here in case it helps someone in the future. I had a similar problem recently where Ildasm would enable me to disassemble some DLLs to ILs, but Ilasm would not let me

问题 I am trying to use ILASM and the process seems to abort with the following message: ***** FAILURE ***** How can I find out why it has failed? Can I turn on verbose messages or is there a log file I can look at? 回答1: While I realise that this is probably too late to help the question author now, I will leave these details here in case it helps someone in the future. I had a similar problem recently where Ildasm would enable me to disassemble some DLLs to ILs, but Ilasm would not let me

问题 I have two go files with different build constraints in the header. constants_production.go: // +build production,!staging package main const ( URL = "production" ) constants_staging.go: // +build staging,!production package main const ( URL = "staging" ) main.go: package main func main() { fmt.Println(URL) } When I do a go install -tags "staging" , sometimes, it prints production ; Sometimes, it prints staging . Similarly, when I do go install -tags "production" ,... How do I get a

问题 I have two go files with different build constraints in the header. constants_production.go: // +build production,!staging package main const ( URL = "production" ) constants_staging.go: // +build staging,!production package main const ( URL = "staging" ) main.go: package main func main() { fmt.Println(URL) } When I do a go install -tags "staging" , sometimes, it prints production ; Sometimes, it prints staging . Similarly, when I do go install -tags "production" ,... How do I get a

问题 I have an app that gets the content of an html file. Lets say the text of the page is: String[] arr = new String[] {"!","@","#"}; for (String str : arr) { write(str); } Can I somehow compile this text and run the code within my app? Thanks 回答1: Use Janino. It's a java runtime in-memory compiler. Way easier than BCEL and the likes. From the homepage: "What is Janino? Janino is a super-small, super-fast Java™ compiler. Not only can it compile a set of source files to a set of class files like

问题 I am trying to statically compile a groovy script to speed up it's execution, but am not able to get it to work if command line arguments are used. My actual script is much longer, but the one-line script I use for this question perfectly reproduces my error. Using the following script ( test.groovy ) println(args.length) This can be compiled with the command groovyc test.groovy and ran by the java command java -cp .;%GROOVY_HOME%\lib\* test and will simply print the number of command line

问题 This question already has answers here : Closed 9 years ago . Possible Duplicate: Compile-time and runtime casting c# As I understand it, the following code will always compile, and will additionally always fail at run-time by throwing an InvalidCastException . Example: public class Post { } public class Question : Post { } public class Answer : Post { public void Fail() { Post p = new Post(); Question q = (Question)p; // This will throw an InvalidCastException } } My questions are... If my