What does this build failure mean?

[Bruce Korb]

gmake bootstrap
gmake[1]: Entering directory `/tools/gcc/=build/libiberty'
[[...]]
gcc -g -O2  -o texindex  texindex.o ../lib/libtxi.a
gmake[3]: Leaving directory `/tools/gcc/=build/texinfo/util'
gmake[2]: Leaving directory `/tools/gcc/=build/texinfo'
gmake[1]: Leaving directory `/tools/gcc/=build/texinfo'
Bootstrapping the compiler
gmake[1]: Entering directory `/tools/gcc/=build/gcc'
gmake[1]: *** No rule to make target `bootstrap'.  Stop.
gmake[1]: Leaving directory `/tools/gcc/=build/gcc'
gmake: *** [bootstrap] Error 2