Something

CFLAGS=-D__USE_MINGW_ACCESS ../../$GCC_SRCDIR/configure \
    --enable-languages=c,c++ \
    --with-cpu=arm7tdmi\
    --enable-interwork --enable-multilib\
    --with-gcc --with-gnu-ld --with-gnu-as \
    --disable-shared --disable-threads --disable-win32-registry --disable-nls --disable-debug\
    --disable-libmudflap --disable-libssp \
    --target=$target \
    --with-newlib \
    --prefix=$prefix || { echo "Error configuring gcc"; exit 1; }

for gdc:

CFLAGS=-D__USE_MINGW_ACCESS ../../$GCC_SRCDIR/configure \
    --enable-languages=c,c++,d \
    --with-cpu=arm7tdmi\
    --enable-interwork --enable-multilib\
    --with-gcc --with-gnu-ld --with-gnu-as \
    --disable-shared --disable-threads --disable-win32-registry --disable-nls --disable-debug\
    --disable-libmudflap --disable-libssp \
    --target=$target \
    --with-newlib \
    --prefix=$prefix || { echo "Error configuring gcc"; exit 1; }