On Fri, 12 Nov 2021, 02:28 Bill Cunningham via Gcc-help, < gcc-help@xxxxxxxxxxx> wrote: > I have this error when trying to build a c++ end onto a gcc "cross" > compiler already built in a small way. What I am doing is building a > "cross" compiler by following some of lfs's instructions. I want a > "cross" compiler but maybe I should just build a native compiler with > bootstrapping disabled. I will eventually need a gcc compiler with > everything because any type of testing is done with a "full suite" > compiler, is my understanding. But, one thing at a time. It seems to me that just building a full GCC would be simpler than your piecemeal approach. https://gcc.gnu.org/wiki/Installing GCC What exactly is > this showing me? I have looked at config.log and partial Makefiles and > config.status scripts. I'm baffled by this anyway. > > In file included from /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:41, > from > /source/gcc-11.2.0/libstdc++-v3/src/c++17/floating_from_chars.cc:36: > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:58:11: error: ‘fenv_t’ > has not been declared in ‘::’ > 58 | using ::fenv_t; > | ^~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:59:11: error: > ‘fexcept_t’ has not been declared in ‘::’ > 59 | using ::fexcept_t; > | ^~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:62:11: error: > ‘feclearexcept’ has not been declared in ‘::’ > 62 | using ::feclearexcept; > | ^~~~~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:63:11: error: > ‘fegetexceptflag’ has not been declared in ‘::’ > 63 | using ::fegetexceptflag; > | ^~~~~~~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:64:11: error: > ‘feraiseexcept’ has not been declared in ‘::’ > 64 | using ::feraiseexcept; > | ^~~~~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:65:11: error: > ‘fesetexceptflag’ has not been declared in ‘::’ > 65 | using ::fesetexceptflag; > | ^~~~~~~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:66:11: error: > ‘fetestexcept’ has not been declared in ‘::’ > 66 | using ::fetestexcept; > | ^~~~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:68:11: error: > ‘fegetround’ has not been declared in ‘::’ > 68 | using ::fegetround; > | ^~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:69:11: error: > ‘fesetround’ has not been declared in ‘::’ > 69 | using ::fesetround; > | ^~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:71:11: error: > ‘fegetenv’ has not been declared in ‘::’ > 71 | using ::fegetenv; > | ^~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:72:11: error: > ‘feholdexcept’ has not been declared in ‘::’ > 72 | using ::feholdexcept; > | ^~~~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:73:11: error: > ‘fesetenv’ has not been declared in ‘::’ > 73 | using ::fesetenv; > | ^~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/fenv.h:74:11: error: > ‘feupdateenv’ has not been declared in ‘::’ > 74 | using ::feupdateenv; > | ^~~~~~~~~~~ > In file included from > /source/gcc-11.2.0/libstdc++-v3/src/c++17/floating_from_chars.cc:36: > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:61:11: error: ‘fenv_t’ > has not been declared in ‘::’ > 61 | using ::fenv_t; > | ^~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:62:11: error: > ‘fexcept_t’ has not been declared in ‘::’ > 62 | using ::fexcept_t; > | ^~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:65:11: error: > ‘feclearexcept’ has not been declared in ‘::’ > 65 | using ::feclearexcept; > | ^~~~~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:66:11: error: > ‘fegetexceptflag’ has not been declared in ‘::’ > 66 | using ::fegetexceptflag; > | ^~~~~~~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:67:11: error: > ‘feraiseexcept’ has not been declared in ‘::’ > 67 | using ::feraiseexcept; > | ^~~~~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:68:11: error: > ‘fesetexceptflag’ has not been declared in ‘::’ > 68 | using ::fesetexceptflag; > | ^~~~~~~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:69:11: error: > ‘fetestexcept’ has not been declared in ‘::’ > 69 | using ::fetestexcept; > | ^~~~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:71:11: error: > ‘fegetround’ has not been declared in ‘::’ > 71 | using ::fegetround; > | ^~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:72:11: error: > ‘fesetround’ has not been declared in ‘::’ > 72 | using ::fesetround; > | ^~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:74:11: error: ‘fegetenv’ > has not been declared in ‘::’ > 74 | using ::fegetenv; > | ^~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:75:11: error: > ‘feholdexcept’ has not been declared in ‘::’ > 75 | using ::feholdexcept; > | ^~~~~~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:76:11: error: ‘fesetenv’ > has not been declared in ‘::’ > 76 | using ::fesetenv; > | ^~~~~~~~ > /source/gcc-11.2.0/libstdc++-v3/b/include/cfenv:77:11: error: > ‘feupdateenv’ has not been declared in ‘::’ > 77 | using ::feupdateenv; > | ^~~~~~~~~~~ > make[3]: *** [Makefile:577: floating_from_chars.lo] Error 1 > make[2]: *** [Makefile:765: all-recursive] Error 1 > make[1]: *** [Makefile:568: all-recursive] Error 1 > make: *** [Makefile:493: all] Error 2 > > It looks like the C++ Scoping operator might have something to do with > this. No, it's a known bug which is in bugzilla already. I am going into gcc-11.2.0/libstdc++-v3 and running the configure > script there. That might not be good idea. > Don't do that then. Run the top-level configure instead. > Bill > > >
