Tried to build gcc on powerpc-apple-darwin5.5 (MacOS 10.1), with the workaround for the bug reported in PR21512 (comment #0)
Fails with error message: ../../gcc/gcc/config/rs6000/host-darwin.c:25: sys/ucontext.h: No such file or directory System header sys/ucontext.h appeared with MacOS 10.2. Something intelligent should be done for systems without sys/ucontext.h. -- Summary: [4.0/4.1 Regression] sys/ucontext.h missing on powerpc- apple-darwin5.5 Product: gcc Version: 4.1.0 Status: UNCONFIRMED Keywords: build Severity: normal Priority: P2 Component: bootstrap AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: fxcoudert at gcc dot gnu dot org CC: gcc-bugs at gcc dot gnu dot org GCC host triplet: powerpc-apple-darwin5.5 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23301