mirror of https://github.com/openzfs/zfs.git
208 lines
6.7 KiB
Plaintext
208 lines
6.7 KiB
Plaintext
dnl #
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dnl # DESCRIPTION:
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dnl # Read meta data from the META file. When building from a git repository
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dnl # the ZFS_META_RELEASE field will be overwritten if there is an annotated
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dnl # tag matching the form ZFS_META_NAME-ZFS_META_VERSION-*. This allows
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dnl # for working builds to be uniquely identified using the git commit hash.
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dnl #
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dnl # The META file format is as follows:
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dnl # ^[ ]*KEY:[ \t]+VALUE$
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dnl #
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dnl # In other words:
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dnl # - KEY is separated from VALUE by a colon and one or more spaces/tabs.
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dnl # - KEY and VALUE are case sensitive.
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dnl # - Leading spaces are ignored.
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dnl # - First match wins for duplicate keys.
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dnl #
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dnl # A line can be commented out by preceding it with a '#' (or technically
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dnl # any non-space character since that will prevent the regex from
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dnl # matching).
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dnl #
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dnl # WARNING:
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dnl # Placing a colon followed by a space or tab (ie, ":[ \t]+") within the
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dnl # VALUE will prematurely terminate the string since that sequence is
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dnl # used as the awk field separator.
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dnl #
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dnl # KEYS:
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dnl # The following META keys are recognized:
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dnl # Name, Version, Release, Date, Author, LT_Current, LT_Revision, LT_Age
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dnl #
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dnl # Written by Chris Dunlap <cdunlap@llnl.gov>.
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dnl # Modified by Brian Behlendorf <behlendorf1@llnl.gov>.
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dnl #
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AC_DEFUN([ZFS_AC_META], [
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AH_BOTTOM([
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#undef PACKAGE
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#undef PACKAGE_BUGREPORT
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#undef PACKAGE_NAME
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#undef PACKAGE_STRING
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#undef PACKAGE_TARNAME
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#undef PACKAGE_VERSION
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#undef STDC_HEADERS
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#undef VERSION])
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AC_PROG_AWK
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AC_MSG_CHECKING([metadata])
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META="$srcdir/META"
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_zfs_ac_meta_type="none"
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if test -f "$META"; then
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_zfs_ac_meta_type="META file"
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ZFS_META_NAME=_ZFS_AC_META_GETVAL([(Name|Project|Package)]);
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if test -n "$ZFS_META_NAME"; then
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AC_DEFINE_UNQUOTED([ZFS_META_NAME], ["$ZFS_META_NAME"],
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[Define the project name.]
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)
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AC_SUBST([ZFS_META_NAME])
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fi
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ZFS_META_VERSION=_ZFS_AC_META_GETVAL([Version]);
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if test -n "$ZFS_META_VERSION"; then
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AC_DEFINE_UNQUOTED([ZFS_META_VERSION],
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["$ZFS_META_VERSION"],
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[Define the project version.])
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AC_DEFINE_UNQUOTED([SPL_META_VERSION],
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[ZFS_META_VERSION],
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[Defined for legacy compatibility.])
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AC_SUBST([ZFS_META_VERSION])
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fi
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ZFS_META_RELEASE=_ZFS_AC_META_GETVAL([Release]);
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if test ! -f ".nogitrelease" && git rev-parse --git-dir > /dev/null 2>&1; then
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_match="${ZFS_META_NAME}-${ZFS_META_VERSION}"
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_alias=$(git describe --match=${_match} 2>/dev/null)
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_release=$(echo ${_alias}|sed "s/${ZFS_META_NAME}//"|cut -f3- -d'-'|tr - _)
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if test -n "${_release}"; then
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ZFS_META_RELEASE=${_release}
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_zfs_ac_meta_type="git describe"
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else
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_match="${ZFS_META_NAME}-${ZFS_META_VERSION}-${ZFS_META_RELEASE}"
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_alias=$(git describe --match=${_match} 2>/dev/null)
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_release=$(echo ${_alias}|sed 's/${ZFS_META_NAME}//'|cut -f3- -d'-'|tr - _)
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if test -n "${_release}"; then
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ZFS_META_RELEASE=${_release}
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_zfs_ac_meta_type="git describe"
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fi
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fi
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fi
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if test -n "$ZFS_META_RELEASE"; then
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AC_DEFINE_UNQUOTED([ZFS_META_RELEASE],
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["$ZFS_META_RELEASE"],
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[Define the project release.])
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AC_DEFINE_UNQUOTED([SPL_META_RELEASE],
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[ZFS_META_RELEASE],
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[Defined for legacy compatibility.])
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AC_SUBST([ZFS_META_RELEASE])
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RELEASE="$ZFS_META_RELEASE"
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AC_SUBST([RELEASE])
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fi
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ZFS_META_LICENSE=_ZFS_AC_META_GETVAL([License]);
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if test -n "$ZFS_META_LICENSE"; then
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AC_DEFINE_UNQUOTED([ZFS_META_LICENSE], ["$ZFS_META_LICENSE"],
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[Define the project license.]
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)
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AC_SUBST([ZFS_META_LICENSE])
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fi
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if test -n "$ZFS_META_NAME" -a -n "$ZFS_META_VERSION"; then
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ZFS_META_ALIAS="$ZFS_META_NAME-$ZFS_META_VERSION"
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test -n "$ZFS_META_RELEASE" &&
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ZFS_META_ALIAS="$ZFS_META_ALIAS-$ZFS_META_RELEASE"
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AC_DEFINE_UNQUOTED([ZFS_META_ALIAS],
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["$ZFS_META_ALIAS"],
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[Define the project alias string.])
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AC_DEFINE_UNQUOTED([SPL_META_ALIAS],
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[ZFS_META_ALIAS],
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[Defined for legacy compatibility.])
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AC_SUBST([ZFS_META_ALIAS])
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fi
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ZFS_META_DATA=_ZFS_AC_META_GETVAL([Date]);
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if test -n "$ZFS_META_DATA"; then
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AC_DEFINE_UNQUOTED([ZFS_META_DATA], ["$ZFS_META_DATA"],
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[Define the project release date.]
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)
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AC_SUBST([ZFS_META_DATA])
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fi
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ZFS_META_AUTHOR=_ZFS_AC_META_GETVAL([Author]);
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if test -n "$ZFS_META_AUTHOR"; then
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AC_DEFINE_UNQUOTED([ZFS_META_AUTHOR], ["$ZFS_META_AUTHOR"],
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[Define the project author.]
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)
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AC_SUBST([ZFS_META_AUTHOR])
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fi
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ZFS_META_KVER_MIN=_ZFS_AC_META_GETVAL([Linux-Minimum]);
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if test -n "$ZFS_META_KVER_MIN"; then
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AC_DEFINE_UNQUOTED([ZFS_META_KVER_MIN],
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["$ZFS_META_KVER_MIN"],
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[Define the minimum compatible kernel version.]
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)
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AC_SUBST([ZFS_META_KVER_MIN])
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fi
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ZFS_META_KVER_MAX=_ZFS_AC_META_GETVAL([Linux-Maximum]);
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if test -n "$ZFS_META_KVER_MAX"; then
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AC_DEFINE_UNQUOTED([ZFS_META_KVER_MAX],
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["$ZFS_META_KVER_MAX"],
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[Define the maximum compatible kernel version.]
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)
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AC_SUBST([ZFS_META_KVER_MAX])
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fi
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m4_pattern_allow([^LT_(CURRENT|REVISION|AGE)$])
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ZFS_META_LT_CURRENT=_ZFS_AC_META_GETVAL([LT_Current]);
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ZFS_META_LT_REVISION=_ZFS_AC_META_GETVAL([LT_Revision]);
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ZFS_META_LT_AGE=_ZFS_AC_META_GETVAL([LT_Age]);
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if test -n "$ZFS_META_LT_CURRENT" \
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-o -n "$ZFS_META_LT_REVISION" \
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-o -n "$ZFS_META_LT_AGE"; then
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test -n "$ZFS_META_LT_CURRENT" || ZFS_META_LT_CURRENT="0"
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test -n "$ZFS_META_LT_REVISION" || ZFS_META_LT_REVISION="0"
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test -n "$ZFS_META_LT_AGE" || ZFS_META_LT_AGE="0"
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AC_DEFINE_UNQUOTED([ZFS_META_LT_CURRENT],
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["$ZFS_META_LT_CURRENT"],
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[Define the libtool library 'current'
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version information.]
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)
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AC_DEFINE_UNQUOTED([ZFS_META_LT_REVISION],
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["$ZFS_META_LT_REVISION"],
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[Define the libtool library 'revision'
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version information.]
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)
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AC_DEFINE_UNQUOTED([ZFS_META_LT_AGE], ["$ZFS_META_LT_AGE"],
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[Define the libtool library 'age'
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version information.]
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)
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AC_SUBST([ZFS_META_LT_CURRENT])
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AC_SUBST([ZFS_META_LT_REVISION])
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AC_SUBST([ZFS_META_LT_AGE])
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fi
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fi
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AC_MSG_RESULT([$_zfs_ac_meta_type])
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]
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)
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dnl # _ZFS_AC_META_GETVAL (KEY_NAME_OR_REGEX)
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dnl #
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dnl # Returns the META VALUE associated with the given KEY_NAME_OR_REGEX expr.
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dnl #
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dnl # Despite their resemblance to line noise,
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dnl # the "@<:@" and "@:>@" constructs are quadrigraphs for "[" and "]".
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dnl # <www.gnu.org/software/autoconf/manual/autoconf.html#Quadrigraphs>
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dnl #
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dnl # The "$[]1" and "$[]2" constructs prevent M4 parameter expansion
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dnl # so a literal $1 and $2 will be passed to the resulting awk script,
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dnl # whereas the "$1" will undergo M4 parameter expansion for the META key.
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dnl #
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AC_DEFUN([_ZFS_AC_META_GETVAL],
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[`$AWK -F ':@<:@ \t@:>@+' '$[]1 ~ /^ *$1$/ { print $[]2; exit }' $META`]dnl
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)
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