Unable to compile GCC 5.2.0 on Debian 7

[admin@mdtech.us]

Hello,

I am not able to compile GCC 5.2.0 on Debian 7 with all latest updates.

Here is the make output:

(cd /GCC-build/try1/build_jit/x86_64-linux-gnu/libstdc++-v3/src/debug; \
   mv Makefile Makefile.tmp; \
   sed -e 's,all-local: all-once,all-local:,' \
       -e 's,install-data-local: install-data-once,install-data-local:,' 
\
       -e '/vpath/!s,src/c,src/debug/c,' \
   < Makefile.tmp > Makefile ; \
   rm -f Makefile.tmp ; \
   make CXXFLAGS='-gdwarf-4 -g3 -O0' \
   toolexeclibdir=/usr/lib/../lib64/debug all) ;
mv: cannot stat `Makefile': No such file or directory
/bin/bash: line 2: Makefile.tmp: No such file or directory
make[2]: Entering directory 
'/GCC-build/try1/build_jit/x86_64-linux-gnu/libstdc++-v3/src/debug'
make[2]: *** No rule to make target 'all'.  Stop.
make[2]: Leaving directory 
'/GCC-build/try1/build_jit/x86_64-linux-gnu/libstdc++-v3/src/debug'
Makefile:977: recipe for target 'build-debug' failed
make[1]: *** [build-debug] Error 2
make[1]: Leaving directory 
'/GCC-build/try1/build_jit/x86_64-linux-gnu/libstdc++-v3/src'
Makefile:605: recipe for target 'all-recursive' failed
make: *** [all-recursive] Error 1

 From what I can figure, it is trying to operate on a Makefile that does 
not exist.

Why is this happening, and most importaintly, how do I fix it?

Maxwell.