On Sun, May 24, 2009 at 10:23 PM, Joern Rennecke <amyl...@spamcop.net> wrote: > Quoting Ian Lance Taylor <i...@google.com>: >> >> Joern Rennecke <amyl...@spamcop.net> writes: >>> >>> * config/sh/sh.c (sh_attribute_table): Use extern in forward >>> declaration. >>> Common issue with declaring/defining const variables in C++. >> >> I've been doing this as >> >> #ifdef __cplusplus >> extern >> #endif > > These #ifdefs sprinkled over the code are awkward. Could we use a #define > for this? E.g. put in system.h > #ifdef __cplusplus > #define CONST_VAR_DECL extern const > #else > #define CONST_VAR_DECL const > #endif
It is much better than defining 'extern' to nothing. I'm a bit surprised that a C90 compiler will not accept 'extern const'. >
