Hi, I don't know why my previous comment is not into the bug tracker but anyway, here is the result of my test.
$ cat plop.c int main() { dseupd_(); return 1; } Both gcc & clang are happy about the symbol: $ gcc -o plop plop.c -larpack && echo $? 0 $ clang -o plop plop.c -larpack && echo $? plop.c:2:1: warning: implicit declaration of function 'dseupd_' is invalid in C99 [-Wimplicit-function-declaration] dseupd_(); ^ 1 warning generated. 0 Are you sure it is an arpack bug ? Sylvestre -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org