Gcc Compile Error
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can easily range from 50 to 75 percent of the total development cost."1 While this is not a course about the software development life cycle it is our goal to teach you good software development technique. The errors that you typically experience are one checking for suffix of object files... configure error of three types: Compiler Errors Linker Errors Run Time Errors lets examine these three types of ld: fatal: symbol referencing errors. no output written to errors in more detail. Compiler Errors Compiler errors are caused by incorrect syntax. This means that you have not followed the basic gcc make error 1 rules of C. These basic rules are things like: putting a semicolon at the end of a line writing a proper function header passing the correct number and type of arguments to a function matching up all pairs of braces {}
Xgcc: Error: Unrecognized Command Line Option '-v'
and parentheses () not using variables that you haven't declared declaring all variables at the top of a function many, many more When you run the compiler on your code it first does any preprocessing (that is any line that begins with #). Then it checks the syntax of your code. In other words it makes sure that you have followed all the rules of C. If you haven't it prints out an error so that you can fix your syntax. gcc error message format Unfortunately most new users find the messages sent back from gcc confusing. So we will go over some common gcc error messages, what they mean, and how to fix them. General compile-time error and warning description In C, a compilation error is usually fatal, meaning that the C compiler cannot compile the source code. A warning, on the other had, is usually just that. The compiler has identified that there may be a problem, but it can produce object code anyway. Warnings should not be ignored, because they usually do indicate that there is something wrong with the program, and it is likely to behave differently from what you would expect. Error messages and warnings are preceded by the program file name and function in which the error was encountered. For example, prog.c: In function `main': indicates that the error was encountered in the program file prog.c, and specifically in function main. The next lines indicate the errors/warnings that occur in that function and program file. If the program is multi-function and/or multi-file, then each different function/file containing errors will be listed separately. The warning/error lines following the function/program file identification line is a record of the program file containing the error; the line number in the source file at which the error occurred; the string "warning", if the message is just a warning (nothing is printed if it is an error); and a description of the problem encountered. For example,
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Undefined First Referenced Symbol In File
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[configure-stage1-target-libgcc] Error 1
Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How http://web.ics.purdue.edu/~cs240/misc/errors.html to manually throw a compiler error in GCC and Xcode up vote 1 down vote favorite In xcode, while compiling apps with gcc, I want to throw compilation time errors if things like NSZombieEnabled is on for a distribution release, thus ensuring that compilation will fail and I won't accidentally do something stupid. I did some googling, but could not figure out how to http://stackoverflow.com/questions/2994490/how-to-manually-throw-a-compiler-error-in-gcc-and-xcode cause the compiler to bail if a certain condition is met. Surely it must be easy, am I just not finding it? iphone objective-c xcode gcc compiler-construction share|improve this question asked Jun 8 '10 at 2:44 coneybeare 27.3k13108168 add a comment| 4 Answers 4 active oldest votes up vote 10 down vote accepted Use the #error directive: #if SHOULD_FAIL #error "bad compiler!" #endif int main() { return 0; } $ gcc a.c -DSHOULD_FAIL=0 # passes fine $ gcc a.c -DSHOULD_FAIL=1 a.c:2:2: error: #error "bad compiler!" Since NSZombieEnabled is an environment variable, you'll need to do something clever in your build script to define your macro as zero or one. Strictly speaking, the #error directive occurs in the C Preprocessor, not gcc. But that shouldn't matter in the case you've described. share|improve this answer edited Jun 8 '10 at 2:52 answered Jun 8 '10 at 2:46 Mark Rushakoff 138k22294346 This seems tough… can't seem to find a way –coneybeare Jun 8 '10 at 3:07 @coneybeare: NSZombieEnabled is an environment variable that you set at run time. You don't need to worry about it at compile time. T
communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any http://askubuntu.com/questions/272741/how-to-fix-compilation-errors-that-mention-stray-342-and-stray-200 questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Ask Ubuntu Questions Tags Users Badges Unanswered Ask Question _ Ask Ubuntu is a question and answer site for Ubuntu users and error 1 developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top How to fix compilation errors that mention “stray ‘\342’” and “stray ‘\200’”? up vote 5 down vote favorite I wrote this gcc compile error program: #include