econf fails with ... checking whether gcc accepts -mpreferred-stack-boundary=4... yes checking whether the stack is correctly aligned by gcc... no checking whether gcc accepts -mpreferred-stack-boundary=2... no configure: error: can't disable buggy stack alignment !!! ERROR: dev-libs/fftw-2.1.5 failed. !!! Function econf, Line 365, Exitcode 1 !!! econf failed On the other hand, running ./configure manually succeeds (as the following compilation & tests & installation do as well). Reproducible: Always Steps to Reproduce:
2.1.5-r1 installs cleanly. *** This bug has been marked as a duplicate of 44068 ***