Re: Add rulesdir to libudev.pc

[Karel Zak <kzak@redhat.com>]

On Thu, Jan 08, 2009 at 10:43:13PM +0100, Kay Sievers wrote:
> Maybe we should drop that exec_prefix use und invent --slibdir (s like
> in --(s)bindir), which other projects think about to introduce, and we
> would require: --prefix, --libdir=, --slibdir=, --sbindir> --sysconf-dir to be specified at configure time? Maybe that's easier
> to handle, I was just waiting what the glib guys plan to use, because
> they have similar problems with configure specifying the rootfs as
> install location.

 My $0.02...  util-linux-ng installs files "everywhere" (/sbin,
 /bin, /usr/bin, /usr/sbin, /etc, ...)

 The build system differentiate between $bindir and $usrbinexec, ...
 etc.

 The important is that the default $exec_prefix (/usr) means "default
 locations" -- so /{bin,sbin,etc} for rootfs stuff and /usr/bin for
 /usr stuff. I think you can use the same logic for /lib and /usr/lib.

 We follow autotools and we don't modify the default $prefix and
 $exec_prefix (by default both is /usr).

 Everything what you need is to check for non-default $exec_prefix in
 configure script, in such case you have to follow the prefix at all.

configure.ac:

        AC_PREFIX_DEFAULT([/usr])

        # Check whether exec_prefix=/usr:
        case $exec_prefix:$prefix in
        NONE:NONE | NONE:/usr | /usr:*)
          AC_MSG_NOTICE([Default --exec-prefix detected.])
          case $bindir in
          '${exec_prefix}/bin') bindir=/bin
            AC_MSG_NOTICE([  --bindir defaults to /bin]) ;;
          esac
          case $sbindir in
          '${exec_prefix}/sbin') sbindir=/sbin
            AC_MSG_NOTICE([  --sbindir defaults to /sbin]) ;;
          esac ;;
        esac


config/include-Makefile.am (included in all Makefiles):

        # The original default values of bindir and sbindir:
        usrbinexecdir = ${exec_prefix}/bin
        usrsbinexecdir = ${exec_prefix}/sbin



    Karel

-- 
 Karel Zak  <kzak@redhat.com>