Hi! I have some problems with linking against pj libraries. Although I included pjlib-util the linker complains about missing symbols: ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_msg.o):stun_msg.c:(.text+0x190a): undefined reference to `pj_crc32_calc' mingw32-make[1]: Leaving directory `C:/Dokumente und Einstellungen/darilion/workspace/AddressBookQtTutorial' ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_msg.o):stun_msg.c:(.text+0x248b): undefined reference to `pj_hmac_sha1_init' ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_msg.o):stun_msg.c:(.text+0x24ab): undefined reference to `pj_hmac_sha1_update' ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_msg.o):stun_msg.c:(.text+0x24c0): undefined reference to `pj_hmac_sha1_final' ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_msg.o):stun_msg.c:(.text+0x2545): undefined reference to `pj_crc32_calc' ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_auth.o):stun_auth.c:(.text+0x510): undefined reference to `pj_hmac_sha1_init' ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_auth.o):stun_auth.c:(.text+0x571): undefined reference to `pj_hmac_sha1_update' ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_auth.o):stun_auth.c:(.text+0x59c): undefined reference to `pj_hmac_sha1_update' ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_auth.o):stun_auth.c:(.text+0x5aa): undefined reference to `pj_hmac_sha1_final' ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_auth.o):stun_auth.c:(.text+0xb6f): undefined reference to `pj_hmac_sha1_init' ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_auth.o):stun_auth.c:(.text+0xb95): undefined reference to `pj_hmac_sha1_update' ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_auth.o):stun_auth.c:(.text+0xbb7): undefined reference to `pj_hmac_sha1_update' ..\pjproject-0.8.0\pjnath\lib/libpjnath-i686-pc-mingw32.a(stun_auth.o):stun_auth.c:(.text+0xbc8): undefined reference to `pj_hmac_sha1_final' May it be, that the libpjlib-util misses some functions? But again strange is that grep finds it in the library (at least the string): $ grep -r pj_crc32_calc lib Binary file lib/libpjlib-util-i686-pc-mingw32.a matches Does somebody know what could be the cause of this problem? thanks klaus