Re: Trouble with variable substitution

[Gary V. Vaughan]

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martin f krafft wrote:
| Hi there, I am trying to do the following:
|
|   AC_INIT(libhid, 0.1.91.0.0, address@hidden)
|
|   LIBHID_MAJOR_VERSION=`echo $AC_PACKAGE_VERSION | cut -d. -f1`
|   LIBHID_MINOR_VERSION=`echo $AC_PACKAGE_VERSION | cut -d. -f2`
|   LIBHID_MICRO_VERSION=`echo $AC_PACKAGE_VERSION | cut -d. -f3`
|   LIBHID_INTERFACE_AGE=`echo $AC_PACKAGE_VERSION | cut -d. -f4`
|   LIBHID_BINARY_AGE=`echo $AC_PACKAGE_VERSION | cut -d. -f5`
|   LIBHID_VERSION=`echo $AC_PACKAGE_VERSION | cut -d. -f1-3`
|
|   PACKAGE=AC_PACKAGE_NAME
|   VERSION=LIBHID_VERSION

~From libtool configure.ac (which uses maj.min[.mic][alpha]):

LT_MAJOR=`echo "AC_PACKAGE_VERSION" | sed ['s,\..*$,,g']`
LT_MINOR=`echo "AC_PACKAGE_VERSION" | sed ['s,^[0-9]*\.\([0-9]*\).*$,\1,']`
LT_MICRO=`echo "AC_PACKAGE_VERSION" \
        | sed ['s,^[0-9]*\.[0-9]*\(\.[0-9]*\).*$,\1,']`
LT_ALPHA=`echo "AC_PACKAGE_VERSION" | sed ['s,^[0-9.]*,,']`

Note the lack of $AC_PACKAGE_VERSION, AC_PACKAGE_VERSION is an m4 macro!
After this you could add, say:

VERSION=$LT_MAJOR.$LT_MINOR.$LT_MICRO

HTH,
        Gary.
- --
Gary V. Vaughan      ())_.  address@hidden,gnu.org}
Research Scientist   ( '/   http://www.oranda.demon.co.uk
GNU Hacker           / )=   http://www.gnu.org/software/libtool
Technical Author   `(_~)_   http://sources.redhat.com/autobook
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