Unable to clean compile GRUB 1.99 (Fails with Error 2)

[Jeffrey Walton]

address@hidden:~/grub-1.99$ uname -a
Linux germain 2.6.38-13-generic #56-Ubuntu SMP Tue Feb 14 12:40:40 UTC
2012 i686 i686 i386 GNU/Linux
address@hidden:~/grub-1.99$ make CFLAGS="-Wall -Wextra -Wconversion
-Wformat=2 -Wformat-security fstack-protector-all -Wl,-z,relro
-Wl,-z,now -Wl,-z,noexecstack -Wl,-z,noexecheap"
make  all-recursive
make[1]: Entering directory `/home/jeffrey/grub-1.99'
Making all in grub-core/gnulib
make[2]: Entering directory `/home/jeffrey/grub-1.99/grub-core/gnulib'
rm -f configmake.h-t && \
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
          echo '#define PREFIX "/usr/local"'; \
          echo '#define EXEC_PREFIX "/usr/local"'; \
....
gnulib/regexec.c:4360:7: error: conversion to 'unsigned int' from
'Idx' may change the sign of the result
gnulib/regexec.c: In function 'match_ctx_add_sublast':
gnulib/regexec.c:4387:7: error: conversion to 'unsigned int' from
'Idx' may change the sign of the result
make[3]: *** [gnulib/libgnulib_a-regex.o] Error 1
make[3]: Leaving directory `/home/jeffrey/grub-1.99/grub-core'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/jeffrey/grub-1.99/grub-core'
Making all in po
make[2]: Entering directory `/home/jeffrey/grub-1.99/po'
make[2]: Leaving directory `/home/jeffrey/grub-1.99/po'
Making all in docs
make[2]: Entering directory `/home/jeffrey/grub-1.99/docs'
make[2]: Nothing to be done for `all'.
make[2]: Leaving directory `/home/jeffrey/grub-1.99/docs'
Making all in util/bash-completion.d
make[2]: Entering directory `/home/jeffrey/grub-1.99/util/bash-completion.d'
../../config.status --file=grub:grub-completion.bash.in
config.status: creating grub
make[2]: Leaving directory `/home/jeffrey/grub-1.99/util/bash-completion.d'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/jeffrey/grub-1.99'
make: *** [all] Error 2

configure.txt
Description: Text document

compile.txt
Description: Text document