cmake HAVE_SEEK_SET examples

nih-at/libzip cmake-compat/CheckSymbolExists.cmake :56 

check_symbol_exists(SEEK_SET "stdio.h" HAVE_SEEK_SET)

flyinghead/flycast core/deps/libzip/cmake-compat/CheckSymbolExists.cmake :56 

check_symbol_exists(SEEK_SET "stdio.h" HAVE_SEEK_SET)

omnigres/omnigres cmake/CheckSymbolExists.cmake :63 

check_symbol_exists(SEEK_SET "stdio.h" HAVE_SEEK_SET)