make fails when auto/config.* are not up to date

gistfile1.txt

$ make
GUI_INC_LOC="" GUI_LIB_LOC="" \
        CC="gcc" CPPFLAGS="" CFLAGS="-g -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1" \
        LDFLAGS="-L.       -L/usr/local/lib -Wl,--as-needed"  srcdir="." \
        ./configure    \
          \
           \
           \
           \
           \
           \
            \
           \
          \

configure: loading cache auto/config.cache
configure: error: `CC' was not set in the previous run
configure: error: `CFLAGS' was not set in the previous run
configure: error: `LDFLAGS' was not set in the previous run
configure: error: `CPPFLAGS' was not set in the previous run
configure: error: in `/cygdrive/c/WORK/vim/src':
configure: error: changes in the environment can compromise the build
configure: error: run `make distclean' and/or `rm auto/config.cache' and start over
Makefile:1656: recipe for target `auto/config.mk' failed
make: *** [auto/config.mk] Error 1