/ nmap Public
configure.ac: fix search for lua #1355
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When cross-compiling, paths such as /usr/include are not allowed and
will raise an error so don't use them when searching for lua.
Indeed, when cross-compilnig, the user can use the --with-liblua option
to specify a path that will put in CPPFLAGS.
If the library is not found without these paths, keep current code as a
Signed-off-by: Fabrice Fontaine firstname.lastname@example.org