Lua5.3 Hardwired in Makefile?

[jlpoolen]

I'm on Gentoo Linux, trying to build this project. The following illustrates the problem I encountered and my "fix" by changing "5.3" to "5.4" and the successful build thereafter.

jlpoole@ryzdesk /usr/local/src/osml10n/lua_unac $ make
gcc -Wall -shared -fPIC -o unaccent.so -I/usr/include/lua5.3 -llua5.3 -Wl,--no-as-needed -lunac lua_unac.c
lua_unac.c:14:10: fatal error: lua.h: No such file or directory
14 | #include <lua.h>
|          ^~~~~~~
compilation terminated.
make: *** [Makefile:7: unaccent.so] Error 1
jlpoole@ryzdesk /usr/local/src/osml10n/lua_unac $ locate lua.h
/usr/include/lua5.4/lua.h
/usr/include/lua5.4/lua.hpp
/usr/include/qt5/Qsci/qscilexerlua.h
/usr/include/texlua53/lua.h
/usr/include/texlua53/lua.hpp
/usr/include/texluajit/lua.h
/usr/include/texluajit/lua.hpp
jlpoole@ryzdesk /usr/local/src/osml10n/lua_unac $ cat -n Makefile
1  # lua version to build against
2  LUAV?=5.3
3
4  TARGETDIR=$(DESTDIR)/usr/lib/x86_64-linux-gnu/lua/$(LUAV)/
5
6  unaccent.so: lua_unac.c
7          gcc -Wall -shared -fPIC -o $@ -I/usr/include/lua$(LUAV) -llua$(LUAV) -Wl,--no-as-needed -lunac$<
8
9  install: unaccent.so
10          install -m 644 unaccent.so $(TARGETDIR)
11
12  deb:
13          dpkg-buildpackage -b -uc
14
15  clean:
16          rm -f unaccent.so
jlpoole@ryzdesk /usr/local/src/osml10n/lua_unac $ nano Makefile
jlpoole@ryzdesk /usr/local/src/osml10n/lua_unac $ make
gcc -Wall -shared -fPIC -o unaccent.so -I/usr/include/lua5.4 -llua5.4 -Wl,--no-as-needed -lunac lua_unac.c
jlpoole@ryzdesk /usr/local/src/osml10n/lua_unac $ ls -la
total 32
drwxr-xr-x  3 jlpoole jlpoole    91 Jun  6 10:25 .
drwxr-xr-x 10 jlpoole jlpoole  4096 Jun  6 08:41 ..
drwxr-xr-x  3 jlpoole jlpoole   121 Jun  6 08:41 debian
-rw-r--r--  1 jlpoole jlpoole   110 Jun  6 08:41 .gitignore
-rw-r--r--  1 jlpoole jlpoole   999 Jun  6 08:41 lua_unac.c
-rw-r--r--  1 jlpoole jlpoole   347 Jun  6 10:25 Makefile
-rwxr-xr-x  1 jlpoole jlpoole 15512 Jun  6 10:25 unaccent.so
jlpoole@ryzdesk /usr/local/src/osml10n/lua_unac $ head -n 2 Makefile |tail -n 1
LUAV?=5.4
jlpoole@ryzdesk /usr/local/src/osml10n/lua_unac $ eselect lua list
[1]   lua5.4 *
jlpoole@ryzdesk /usr/local/src/osml10n/lua_unac $

I'm not a savant re: make, but wonder if there could not be a setting that accomodates both Lua 5.3 and 5.4?