Jasper@media /cygdrive/c/mozilla
$ ./configure CC=gcc
./.mozconfig: line 1: $'\r': command not found
./.mozconfig: line 3: $'\r': command not found
./.mozconfig: line 5: $'\r': command not found
./.mozconfig: line 7: $'\r': command not found
./.mozconfig: line 9: $'\r': command not found
./.mozconfig: line 11: $'\r': command not found
configure: warning: CC=gcc: invalid host type
loading cache ./config.cache
checking host system type... Invalid configuration `CC=gcc': machine `CC=gcc' no
t recognized

checking target system type... Invalid configuration `CC=gcc': machine `CC=gcc'
not recognized

checking build system type... Invalid configuration `CC=gcc': machine `CC=gcc' n
ot recognized

checking for gawk... gawk
checking for nsinstall... /cygdrive/c/moztools/bin/nsinstall
checking for gcc... gcc
  ) works... nor the C compiler (gcc
configure: error: installation or configuration problem: C compiler cannot creat
e executables.

Jasper@media /cygdrive/c/mozilla