Related to PR 448 and PR 16989. The C 99 standard includes <complex.h>, however, Cygwin does not provide it.
Expected: GCC provides complex.h on platforms lacking it. Cf. http://gcc.gnu.org/ml/fortran/2007-04/msg00100.html -- Summary: Provide complex.h for cygwin platform (C99 complex support) Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: enhancement Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: burnus at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31527