Software :: Installing Lsyncd 2.0 - No Package 'lua' Found

I'm trying to install lsyncd 2.0 and I am having troubles... Apparently when I do a

Code:

./configure

I get this error

Code:

checking for LUA... no
checking for LUA... no
checking for LUA... no
checking for LUA... configure: error: Package requirements (lua >= 5.1.3) were not met:
No package 'lua' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. Alternatively, you may set the environment variables LUA_CFLAGS
and LUA_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details.I know for a fact I have LUA installed.

Code:

alex@Onyx:~/Downloads/lsyncd-2.0.0$ lua -v
Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Rio

I even added the location of the LUA binary to the PKG_CONFIG_PATH environment variable but it's still throwing me this error.

Code:

alex@Onyx:~/Downloads/lsyncd-2.0.0$ $PKG_CONFIG_PATH
bash: :/usr/bin/lua: No such file or directory

EDIT: For some reason, when I built and installed LUA, the "lua.pc" file was not copied over. So I copied the "lua.pc" over to my /usr/lib/pkgconfig/ folder and the ran the ./configure again. This time it worked.