libstdc++-v3 build failures

[Tim Josling]

1. I Configure without c++, but the bootstrap insists on building
libstdc++-v3. Why? Here is the configure command: time
../configure --enable-languages=c,toy,exa,cobol
--prefix=/usr/tim/cobgcc/cob/install --disable-cpplib. Apart from
the failure below, this slows down my builds no end.

2. When building libstdc++-v3, the following failure occurs:

/usr/tim/cobgcc/cob/objdir/gcc/xgcc
-B/usr/tim/cobgcc/cob/objdir/gcc/ -B/usr/tim
ux-gnu/lib/ -isystem
/usr/tim/cobgcc/cob/install/i686-pc-linux-gnu/include -DHAV
clude -I../include -I/usr/tim/cobgcc/cob/install/include -g -O2
-c ../../../../l
In file included from
../../../../libstdc++-v3/libmath/signbit.c:32:
../../../../libstdc++-v3/libmath/mathconf.h:151:6: #error "We
need FINITE_P"
../../../../libstdc++-v3/libmath/mathconf.h:205:7: #error "We
need INFINITE_P"
make[4]: *** [signbit.lo] Error 1
make[4]: Leaving directory
`/usr/tim/cobgcc/cob/objdir/i686-pc-linux-gnu/libstdc
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory
`/usr/tim/cobgcc/cob/objdir/i686-pc-linux-gnu/libstdc
make[2]: *** [all-recursive-am] Error 2
make[2]: Leaving directory
`/usr/tim/cobgcc/cob/objdir/i686-pc-linux-gnu/libstdc
make[1]: *** [all-target-libstdc++-v3] Error 2
make[1]: Leaving directory `/usr/tim/cobgcc/cob/objdir'
make: *** [bootstrap] Error 2
Command exited with non-zero status 2
3146.88user 109.34system 1:04:46elapsed 83%CPU (0avgtext+0avgdata
0maxresident)k
0inputs+0outputs (1589523major+1902391minor)pagefaults 6798swaps

For the time being I have manually suppressed the libstdc++-v3
build.

Tim Josling