[rrd-developers] Checking for lua in the configure script

Fidelis Assis fidelis at pobox.com
Tue Sep 29 20:10:23 CEST 2009

Hi Sebastian,

Sebastian Harl escreveu:

> I'm pretty sure, we'll find a solution ;-) In the worst case, I'd have
> to build-conflict with any other lua version to make sure /usr/bin/lua
> points to lua5.1 - that's quite ugly though and I'd have to touch the
> package any time a new version of lua has been uploaded, so I'd like to
> avoid that.

Please, check if this will do. It'll force lua5.1, if available, even if
/usr/bin/lua points elsewhere.

--- program-rev1919/configure.ac	2009-09-29 14:01:36.000000000 -0300
+++ program-rev1919-new/configure.ac	2009-09-29 14:58:35.000000000 -0300
@@ -659,7 +659,7 @@

 dnl Check for Lua.
-AC_PATH_PROG(LUA, lua, no)
+AC_PATH_PROGS(LUA, lua5.1 lua, no)

 AC_ARG_ENABLE(lua,AS_HELP_STRING([--disable-lua],[do not build the lua
@@ -737,10 +737,11 @@
           # try with dot, without dot and finally without version
+	  lua_dirname=`dirname $LUA`
           for f in $lua_pkg_prefix$lua_vdot $lua_pkg_prefix$lua_vndot
$lua_pkg_prefix; do
-            lua_exec_prefix=`$PKGCONFIG --variable=prefix $f 2>/dev/null`
+            lua_pkg_prefix=`$PKGCONFIG --variable=prefix $f 2>/dev/null`
             # same binaries?
-            if test "$lua_exec_prefix/bin/lua" = "$LUA"; then
+            if test "$lua_pkg_prefix/bin" = "$lua_dirname"; then
                 # OK, found CFLAGS. Get Lua LFLAGS and modules install dir
                 LUA_CFLAGS=`$PKGCONFIG --cflags $f 2>/dev/null`
                 LUA_LFLAGS=`$PKGCONFIG --libs $f 2>/dev/null`


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