build failure on solaris 2.7

[Rupert Wood]

Mike Stump wrote:

> updating cache ../config.cache
> loading cache ../config.cache within ltconfig
> configure: error: libtool configure failed
> make[1]: *** [configure-target-boehm-gc] Error 1
> make[1]: Leaving directory `/kankakee1/tmp/mrs/net/gcc-sol'
> make: *** [bootstrap] Error 2

I've seen that (albeit building libstdc++-v3) on i386-pc-solaris2.7. I'd
assumed I'd just hosed my system somewhere along the way.

I tried and failed to isolate it a while back; the problem only occurs if
config.cache hasn't already been built. When it fails, config.cache
contains:

    lt_cv_file_magic_cmd=${lt_cv_file_magic_cmd='$MAGIC_CMD'}

which I am suspicious of, but I don't know enough about the
libtool/configure mechanics. Certainly you can work around this by setting
CONFIG_SHELL to bash.

Rup.