Микроконтроллеры

Даю готовую ссылку на стандарт ISO/IEC 14882:2003(С++ 2003) и рекомендую поругаться с IAR о несоблюдении оного :-) 7.1.1 Storage class specifiers ... 6 A name declared in a namespace scope without a storage-class-specifier has external linkage unless it has internal linkage because of a previous declaration and provided it is not declared const. Objects declared const and not explicitly declared extern have internal linkage.