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>>>>> Andreas Jaeger writes: >>>>> Ulrich Drepper writes: Ulrich> Andreas Jaeger <aj@suse.de> writes: >>> The easiest way is AFAIK to add the following to some file: >>> #ifndef __STDC__ >>> # error "You need a ISO C conforming compiler to use the glibc headers" >>> #endif Ulrich> If we are thinking about other compilers but gcc (which is legitimate Ulrich> for the use of glibc) then this is not enough. Most compilers beside Ulrich> gcc do not define __STDC__ except if you direct the compiler to be Ulrich> strictly compliant. This is a weakness in the ISO C standard. AJ> :-( Ulrich> I don't know whether we can add any reasonable check. AJ> We can at least check for gcc -traditional with: AJ> #if defined __GNUC__ && __STDC__ AJ> # error "You need a ISO C conforming compiler to use the glibc headers" AJ> #endif The condition is wrong. Here's a new patch. 2000-03-31 Andreas Jaeger <aj@suse.de> * misc/sys/cdefs.h: Error out if compiled by gcc -traditional. ============================================================ Index: misc/sys/cdefs.h --- misc/sys/cdefs.h 2000/03/31 04:17:23 1.31 +++ misc/sys/cdefs.h 2000/03/31 06:04:43 @@ -28,6 +28,12 @@ #undef __P #undef __PMT +/* The GNU C library can only be used by a ISO C compiler (conformant + to ISO C90 or ISO C99). gcc -traditional is not ISO C conformant. */ +#if defined __GNUC__ && !defined __STDC__ +# error "You need a ISO C conforming compiler to use the glibc headers" +#endif + #ifdef __GNUC__ /* GCC can always grok prototypes. For C++ programs we add throw() -- Andreas Jaeger SuSE Labs aj@suse.de private aj@arthur.rhein-neckar.de
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