Alex Vong <alexvong1995@xxxxxxxxx> writes: > Alex Vong <alexvong1995@xxxxxxxxx> writes: > > [...] >> >> I am building GCC 7.3.0 with Guix on Debian 10. I want to add these flags: >> '-mindirect-branch=thunk -mfunction-return=thunk -mindirect-branch-register'. >> The build log is in the attachment. Thank you. >> > [...] > > Turns out the log is too large to be attached, so I put it here: > > https://notabug.org/alexvong1995/logs/src/master/gcc/dl4kjm4148xrk4zh6r3fx87yj2kg6w-gcc-7.3.0.drv I understand the problem now. I mistype CXXFLAGS as CPPFLAGS. I will try if this resolves the problem.
