#86 Enhance Lua autoconfiguration

[Mykola Orliuk]

Looks like there is two ways to name pc-files for lua. In Exherbo currently there is used lua-5.1.pc naming instead of lua5.1.pc.

ionice -c 3 nice -n 19 make -j12 --load-average=8 PREFIX=/usr/x86_64-pc-linux-gnu CC=x86_64-pc-linux-gnu-gcc LUA_VERSION=5.1 PKG_CONFIG=x86_64-pc-linux-gnu-pkg-config
Package lua5.1 was not found in the pkg-config search path.
Perhaps you should add the directory containing `lua5.1.pc'
to the PKG_CONFIG_PATH environment variable
No package 'lua5.1' found
build/lua-detect.mk:30: *** "x86_64-pc-linux-gnu-pkg-config couldn't find linker flags for lua5.1!".  Stop.

Let's enhance yet again how we do configure Lua.
My suggestion is to try both lua-$(ver) and lua$(ver:5.0=) pkg-config modules.

Besides that Exherbo switched to target-prefixed tools. I.e.

ionice -c 3 nice -n 19 make -j12 --load-average=8 PREFIX=/usr LIBDIR=/usr/lib X11_PREFIX=/usr CC=x86_64-pc-linux-gnu-gcc
/bin/sh: pkg-config: command not found

Also as I already mentioned in [#64] I'd like to have a better control over Lua version being used.

So... Another patch regarding build process is comming...

[Mykola Orliuk]

Here comes the patch suggestion

[Arnout Engelen]

Applied, thanks!!