bash-3.2$ rm -rf tmp
bash-3.2$ make prereq
Checking 'non-root'... ok.
Checking 'working-make'... ok.
Checking 'case-sensitive-fs'... ok.
Checking 'working-gcc'... ok.
Checking 'working-g++'... ok.
Checking 'ncurses'... ok.
Checking 'zlib'... ok.
Checking 'gawk'... ok.
Checking 'bison'... ok.
Checking 'flex'... ok.
Checking 'unzip'... ok.
Checking 'bzip2'... ok.
Checking 'patch'... ok.
Checking 'perl'... ok.
Checking 'wget'... ok.
Checking 'gnutar'... ok.
Checking 'autoconf'... ok.
Collecting target info: done
Collecting package info: done
Checking 'bison'... ok.
Checking 'automake'... ok.
Checking 'pkg-config'... ok.
Prerequisite check failed. Use FORCE=1 to override.
make: *** [tmp/.prereq-package] Error 1
bash-3.2$ ls -l package/sound/shell-fm
lrwxrwxrwx  1 rwhitby users 29 Jul 23 18:21 package/sound/shell-fm -> ../../packages/sound/shell-fm
bash-3.2$ rm package/sound/shell-fm
bash-3.2$ rm -rf tmp
bash-3.2$ make prereq
Checking 'non-root'... ok.
Checking 'working-make'... ok.
Checking 'case-sensitive-fs'... ok.
Checking 'working-gcc'... ok.
Checking 'working-g++'... ok.
Checking 'ncurses'... ok.
Checking 'zlib'... ok.
Checking 'gawk'... ok.
Checking 'bison'... ok.
Checking 'flex'... ok.
Checking 'unzip'... ok.
Checking 'bzip2'... ok.
Checking 'patch'... ok.
Checking 'perl'... ok.
Checking 'wget'... ok.
Checking 'gnutar'... ok.
Checking 'autoconf'... ok.
Collecting target info: done
Collecting package info: done
Checking 'bison'... ok.
Checking 'automake'... ok.
Checking 'pkg-config'... ok.
Checking 'npe-ucode'... ok.
bash-3.2$ ln -s /home/slug/openwrt/packages/sound/shell-fm package/sound/
bash-3.2$ rm -rf tmp
bash-3.2$ make prereq
Checking 'non-root'... ok.
Checking 'working-make'... ok.
Checking 'case-sensitive-fs'... ok.
Checking 'working-gcc'... ok.
Checking 'working-g++'... ok.
Checking 'ncurses'... ok.
Checking 'zlib'... ok.
Checking 'gawk'... ok.
Checking 'bison'... ok.
Checking 'flex'... ok.
Checking 'unzip'... ok.
Checking 'bzip2'... ok.
Checking 'patch'... ok.
Checking 'perl'... ok.
Checking 'wget'... ok.
Checking 'gnutar'... ok.
Checking 'autoconf'... ok.
Collecting target info: done
Collecting package info: done
Checking 'bison'... ok.
Checking 'automake'... ok.
Checking 'pkg-config'... ok.
Prerequisite check failed. Use FORCE=1 to override.
make: *** [tmp/.prereq-package] Error 1
bash-3.2$ make -C package/sound/shell-fm prereq TOPDIR=$PWD
find: /home/slug/openwrt/build_armeb/shell-fm: No such file or directory
make: Entering directory `/home/slug/openwrt/packages/sound/shell-fm'
Checking 'aclocal'... ok.
make: Leaving directory `/home/slug/openwrt/packages/sound/shell-fm'
bash-3.2$ echo $?
0
bash-3.2$