#error Gcc
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Gcc Preprocessor Directives
x 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 gcc error pragma GCC #pragma to stop compilation up vote 19 down vote favorite 1 Is there a GCC pragma directive that will stop,halt, or abort the compilation process? I am using gcc 4.1 but would want the pragma to be available on gcc 3.x versions also. gcc share|improve this question asked Jan 23 '10 at 22:15 Sean A.O. Harney 13.8k42027 1 We might be able gcc error messages to provide a better answer if you tell us why you want compilation to stop. –Michael Jan 23 '10 at 22:22 add a comment| 4 Answers 4 active oldest votes up vote 31 down vote accepted You probably want #error: edd@ron:/tmp$ g++ -Wall -DGoOn -o stopthis stopthis.cpp edd@ron:/tmp$ ./stopthis Hello, world edd@ron:/tmp$ g++ -Wall -o stopthis stopthis.cpp stopthis.cpp:7:6: error: #error I had enough edd@ron:/tmp$ cat stopthis.cpp #include
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Gcc Error Trying To Exec Cc1plus
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Gcc Error Trying To Exec 'cc1plus' Execvp
Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; http://stackoverflow.com/questions/2124968/gcc-pragma-to-stop-compilation it only takes a minute: Sign up How 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 http://stackoverflow.com/questions/2994490/how-to-manually-throw-a-compiler-error-in-gcc-and-xcode stupid. I did some googling, but could not figure out how to 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 27.2k13108168 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 137k22294346 This seems tough… can't seem to find a way –coneybeare Jun 8 '10 at 3:0
| Comments Off on Preprocessor - the #error Directive Preprocessor - the #error Directive This is a very useful and often underused preprocessor directive. Behaviour of this preprocessor directive is the same for both C and C++ compilers. Purpose The #error directive terminates compilation and http://www.complete-concrete-concise.com/programming/c/preprocessor-%E2%80%93-the-error-directive outputs the text following the directive. Format #error text All preprocessor directives begin with the # symbol. It must be the first character on the line or the first character on the line following optional white space. Some https://root.cern.ch/phpBB3/viewtopic.php?t=21393 early compilers flagged an error if # was not the first character on the line. Spaces or tabs are permitted between the # and error, but not escape characters or other symbols or macros. The preprocessor removes white gcc error space and concatenates the # and error together. If anything follows the #error directive (other than white space) then the program is malformed. The following are valid uses: #error some error message text # error some error text to display # /* comments are white space */ error some error message to display The following are invalid uses: // #\ is not a valid preprocessor directive # \t error text to output // #" is not gcc error trying a valid preprocessor directive # "" text to output Use It is used to render a program malformed and output the text following the #error directive. The text may be quoted or unquoted (it doesn't matter). No macro expansion takes place. The language specifications do not say how the text following the #error directive is to be treated. The GCC compiler, replaces all white space characters between tokens with a single white space character. I have no reason to believe other compilers behave differently since white space is not considered significant in the C and C++ languages - it serves only to seperate tokens from one another. There are many times when it is useful to halt compilation: code is incomplete code requires particular library versions code uses compiler dependent features code has specific compiler requirements Incomplete Code When developing code, it is common to create stub functions. For the final release, these stub functions need to be implemented. We can let the compiler help us catch unimplemented functions: int my_function( void ) { #error my_function not implemented return 0; } The above code will fail for every compile. It might be more useful to allow compiling during development, but break the compile when we try to compile a release version. In the following example, we assume that during development, the macro DEBUG is defined: int my_
GCC cling error SOLVED Discuss installing and running ROOT here. Please post bug reports in Jira. Moderator: rootdev Post Reply Search Advanced search First unread post • 8 posts • Page 1 of 1 Erazoender Posts: 3 Joined: Wed Mar 30, 2016 19:06 Trouble installing ROOT 6 Ubuntu 15.10, GCC cling errorSOLVED Quote Unread postby Erazoender » Wed Apr 06, 2016 22:57 Hi guys,I'll preface this by saying I'm totally new to Linux so these might be some very trivial and noob-ish mistakes. So I've been trying to install root via the quick installation, and ran into a few hickups along the way. However now I'm stuck at the cmake --build, when executing: Code: Select all[ 13%] Building CXX object interpreter/cling/lib/Interpreter/CMakeFiles/clingInterpreter.dir/CIFactory.cpp.o
Throwing me these errors Code: Select all/home/david/programs/cernroot_2/root/interpreter/cling/lib/Interpreter/CIFactory.cpp:530:4: error: #error "cling does not support the GCC 5 ABI yet."
# error "cling does not support the GCC 5 ABI yet."
^
/home/david/programs/cernroot_2/root/interpreter/cling/lib/Interpreter/CIFactory.cpp:531:4: error: #error "See https://sft.its.cern.ch/jira/browse/ROOT-7947"
# error "See https://sft.its.cern.ch/jira/browse/ROOT-7947"
^
interpreter/cling/lib/Interpreter/CMakeFiles/clingInterpreter.dir/build.make:175: recipe for target 'interpreter/cling/lib/Interpreter/CMakeFiles/clingInterpreter.dir/CIFactory.cpp.o' failed
make[2]: *** [interpreter/cling/lib/Interpreter/CMakeFiles/clingInterpreter.dir/CIFactory.cpp.o] Error 1
CMakeFiles/Makefile2:8979: recipe for target 'interpreter/cling/lib/Interpreter/CMakeFiles/clingInterpreter.dir/all' failed
make[1]: *** [interpreter/cling/lib/Interpreter/CMakeFiles/clingInterpreter.dir/all] Error 2
Makefile:136: recipe for target 'all' failed
make: *** [all] Error 2
A quick google search wasn't too fruitful. My basic English comprehension skills suggest to me that my GCC version that came with Ubuntu 15.10 is incompatible, so my thought is either find a way to rollback to an older GCC version, or reinstall Ubuntu to a LTS distribution. I don't have much on my Linux hard drive so this isn't too daunting for me. Any other suggestions? Thanks for the help in advance! Top Axel Posts: 2577 Joined: Wed Sep 03, 2003 22:35 Location: CERN Re: Trouble installing ROOT 6 Ubuntu 15.10, GCC cling error Quote Unread postby Axel » Thu Apr 07, 2016 11:34 Hi,Indeed, those