auto.def

# Initial auto.def created by 'autosetup --init'

use cc cc-shared

# Add any user options here
options {
	with-lua:	=> "Search for Lua in directory DIR"
}

cc-check-includes udns.h

# TODO pull lua search into a module
# TODO allow "use lua" "use lua5.1" etc. to specify supported lua version, if not both
# TODO print version of lua found

# Lua header search strategy
#   Implicit:
#     1. System default search
#     2. /usr/local/include+{,lua5.1,lua5.2}
#     3. /usr/include+{,lua5.1,lua5.2}
#   Explicit:
#     1. PATH+{,lua5.1,lua5.2}

set WITHLUA [opt-val with-lua]

proc check-lua-dir {dir} {
	foreach sub { "" /lua5.1 /lua5.2 } {
		if {[cc-check-includes $dir$sub/lua.h]} {
			define LUA_INCLUDE_PATH $dir$sub
			return 1
		}
	}
}

proc check-lua-dirs {dirs} {
	foreach dir $dirs {
		if {[check-lua-dir $dir]} {
			return 1
		}
	}
}

if { $WITHLUA == "" } {
	# Implicit
	if {[cc-check-includes lua.h]} {
	} else {
		check-lua-dirs { /usr/local/include /usr/include }
	}
} else {
	# Explicit
	check-lua-dir $WITHLUA
}

make-config-header config.h
make-template Makefile.in