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error redefinition of nion semun

here for a quick overview of the site Help Center Detailed answers to any 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 Stack Overflow Questions Jobs 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; it only takes a minute: Sign up Compilation error: Redefinition of union name up vote 1 down vote favorite I have this piece of code here and I get a GCC error: Redefinition of union semun right at the beginning of this code union semun { int val; /* Value for SETVAL */ struct semid_ds *buf; /* Buffer for IPC_STAT, IPC_SET */ unsigned short *array; /* Array for GETALL, SETALL */ struct seminfo *__buf; /* Buffer for IPC_INFO }; This program is about communicating with mutexes. I don't think that it's about the other parts of the program because the error comes here, right at the first line of it, and this code is outside the main, at the beginning of the program so there's not any other union declaration before (and after). Thank you gcc compiler-errors posix mutex unions share|improve this question edited May 22 '14 at 2:01 timrau 17.1k32450 asked May 16 '14 at 13:09 STRATOSpeed 348 Since you believe ecatmur's answer to your question is right, you can help the SO community by marking it accepted. Then it doesn't keep showing up as unanswered. In addition, ecatmur will gain some reputation points if you do so, and so will you. –Mike Kinghan May 17 '14 at 16:44 add a comment| 1 Answer 1 active oldest votes up vote 1 down vote accepted Contrary to X/Open, some platforms define union semun in their hea

at "error: redefinition of 'union semun'" Message ID: 70f41ba20803051020l511af7b7pd908d10b60d3d9d1@mail.gmail.com i'm building perl 5.10.0 on Darwin Kernel Version 9.2.0: Tue Feb 5 16:15:19 PST 2008; root:xnu-1228.3.13~1/RELEASE_PPC powerpc-apple-darwin9-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5531) currently, make dies @ "redef of 'union semun'" cd /build/perl-5.10.0 make ... In file included from miniperlmain.c:36: perl.h:5431: error: redefinition of 'union semun' make: *** [miniperlmain.o] Error 1 looking @ perl.h:5427 ... #ifdef HAS_SEM # include # include # ifndef HAS_UNION_SEMUN /* Provide the union semun. */ union semun { int val; struct semid_ds http://stackoverflow.com/questions/23695859/compilation-error-redefinition-of-union-name *buf; unsigned short *array; }; # endif # ifdef USE_SEMCTL_SEMUN # ifdef IRIX32_SEMUN_BROKEN_BY_GCC union gccbug_semun { int val; struct semid_ds *buf; unsigned short *array; char __dummy[5]; }; # define semun gccbug_semun # endif # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun) # else # ifdef USE_SEMCTL_SEMID_DS # ifdef EXTRA_F_IN_SEMUN_BUF # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun.buff) # else # http://www.nntp.perl.org/group/perl.macosx/2008/03/msg10632.html define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun.buf) # endif # endif # endif #endif ... it looks like a HAS_UNION_SEMUN or HAS_SEM needs to be undef'd? i don't see this issue w/ 5.8.8, so it might be perl-src ... before I blindly undef/def symbols, can anyone comment/hint on this? thanks. Thread Next perl 5.10.0 / osx 10.5.2 'make' dies at "error: redefinition of 'union semun'" by snowcrash+perl Re: perl 5.10.0 / osx 10.5.2 'make' dies at "error: redefinition of 'union semun'" by Edward Moy Re: perl 5.10.0 / osx 10.5.2 'make' dies at "error: redefinition of 'union semun'" by snowcrash+perl Re: perl 5.10.0 / osx 10.5.2 'make' dies at "error: redefinition of 'union semun'" by Edward Moy Re: perl 5.10.0 / osx 10.5.2 'make' dies at "error: redefinition of 'union semun'" by snowcrash+perl Re: perl 5.10.0 / osx 10.5.2 'make' dies at "error: redefinition of 'union semun'" by Edward Moy Re: perl 5.10.0 / osx 10.5.2 'make' dies at "error: redefinition of 'union semun'" by snowcrash+perl nntp.perl.org: Perl Programming lists via nntp and http. Comments to Ask Bjørn Hansen at ask@perl.org | Group listing | About

error in perl.h (line 2546) stating http://computer-programming-forum.com/53-perl/23dcc1e7877fff04.htm "redefinition of union senum" I see this is caused by an "# ifndef HAS_UNION_SEMUN" construct. The perl is version 5.00503 Has anyone any suggestions. Thanks -Gordon Sent via Deja.com http://www.*-*-*.com/ Before you buy. Wed, 18 Jun 1902 08:00:00 GMT Jonathan Stow#2 / 2 Redefinition error redefinition of union Semun Quote:> I am trying to install PerlMagick on a Linux sytem. When "making" I get > an error in perl.h (line 2546) stating "redefinition of union senum" > I see this is caused by an "# ifndef HAS_UNION_SEMUN" construct. > The perl is error redefinition of version 5.00503 > Has anyone any suggestions. #define HAS_UNION_SEMUN ? This is probably because the ImageMagick includes define it as well. /J\ -- ** This space reserved for venue sponsor for yapc::Europe ** Wed, 18 Jun 1902 08:00:00 GMT Page 1 of 1 [ 2 post ] Relevant Pages 1. mod_perl: "redefinition of `union semun'"? 2. union semun error 3. Math::Trig vs. POSIX - funciton redefinition 4. Need help with IO redirection/redefinition 5. variable redefinition? 6. Redefinition warnings on use of CGI::Carp?? 7. Redefinition warnings on use of CGI::Carp?? 8. print $fh redefinition 9. How to avoid redefinition? 10. Computing set union and intersection. 11. Finding the union of the keys of 2 associative arrays 12. builtin array union intersection function Powered by phpBB Forum Software

 

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