[Boost-users] the name of installed Boost libraries, with or without '-gcc'

Hi, I have installed boost 1.33-1 in SLES (SUSE Linux Enterprise Server) 11 manually by bjam 3.12, and in SLES10 sp2 via YAST2 (with the defalut bjam 3.1.4). I found that the installed libraries in SLES 11 are always with the postfix '-gcc', which is not appeared in the libraries in SLES 10 sp2 (For example, "libboost_filesystem-gcc.o" in SLES 11, but "libboost_filesystem.o" in SLES10 sp2). The '-gcc' also exists in the library name in SLES 9.3. Is it configurable to be with or without '-gcc', and in which file? Is it related to the SLES version, or bjam version? It is appreciated that you give some hints! Best regards, Weining