dnl #
-dnl # SPL_AC_META
-dnl # Read metadata from the META file.
+dnl # DESCRIPTION:
+dnl # Read meta data from the META file. When building from a git repository
+dnl # the SPL_META_RELEASE field will be overwritten if there is an annotated
+dnl # tag matching the form SPL_META_NAME-SPL_META_VERSION-*. This allows
+dnl # for working builds to be uniquely identified using the git commit hash.
dnl #
-dnl # AUTHOR:
-dnl # Chris Dunlap <cdunlap@llnl.gov>
+dnl # The META file format is as follows:
+dnl # ^[ ]*KEY:[ \t]+VALUE$
+dnl #
+dnl # In other words:
+dnl # - KEY is separated from VALUE by a colon and one or more spaces/tabs.
+dnl # - KEY and VALUE are case sensitive.
+dnl # - Leading spaces are ignored.
+dnl # - First match wins for duplicate keys.
+dnl #
+dnl # A line can be commented out by preceding it with a '#' (or technically
+dnl # any non-space character since that will prevent the regex from
+dnl # matching).
+dnl #
+dnl # WARNING:
+dnl # Placing a colon followed by a space or tab (ie, ":[ \t]+") within the
+dnl # VALUE will prematurely terminate the string since that sequence is
+dnl # used as the awk field separator.
+dnl #
+dnl # KEYS:
+dnl # The following META keys are recognized:
+dnl # Name, Version, Release, Date, Author, LT_Current, LT_Revision, LT_Age
+dnl #
+dnl # Written by Chris Dunlap <cdunlap@llnl.gov>.
+dnl # Modified by Brian Behlendorf <behlendorf1@llnl.gov>.
dnl #
AC_DEFUN([SPL_AC_META], [
+ AC_PROG_AWK
AC_MSG_CHECKING([metadata])
META="$srcdir/META"
- _spl_ac_meta_got_file=no
+ _spl_ac_meta_type="none"
if test -f "$META"; then
- _spl_ac_meta_got_file=yes
+ _spl_ac_meta_type="META file"
- META_NAME=_SPL_AC_META_GETVAL([(?:NAME|PROJECT|PACKAGE)]);
- if test -n "$META_NAME"; then
- AC_DEFINE_UNQUOTED([META_NAME], ["$META_NAME"],
+ SPL_META_NAME=_SPL_AC_META_GETVAL([(Name|Project|Package)]);
+ if test -n "$SPL_META_NAME"; then
+ AC_DEFINE_UNQUOTED([SPL_META_NAME], ["$SPL_META_NAME"],
[Define the project name.]
)
- AC_SUBST([META_NAME])
+ AC_SUBST([SPL_META_NAME])
fi
- META_VERSION=_SPL_AC_META_GETVAL([VERSION]);
- if test -n "$META_VERSION"; then
- AC_DEFINE_UNQUOTED([META_VERSION], ["$META_VERSION"],
+ SPL_META_VERSION=_SPL_AC_META_GETVAL([Version]);
+ if test -n "$SPL_META_VERSION"; then
+ AC_DEFINE_UNQUOTED([SPL_META_VERSION], ["$SPL_META_VERSION"],
[Define the project version.]
)
- AC_SUBST([META_VERSION])
+ AC_SUBST([SPL_META_VERSION])
+ fi
+
+ SPL_META_RELEASE=_SPL_AC_META_GETVAL([Release]);
+ if test ! -f ".nogitrelease" && git rev-parse --git-dir > /dev/null 2>&1; then
+ _match="${SPL_META_NAME}-${SPL_META_VERSION}"
+ _alias=$(git describe --match=${_match} 2>/dev/null)
+ _release=$(echo ${_alias}|cut -f3- -d'-'|sed 's/-/_/g')
+ if test -n "${_release}"; then
+ SPL_META_RELEASE=${_release}
+ _spl_ac_meta_type="git describe"
+ fi
fi
- META_RELEASE=_SPL_AC_META_GETVAL([RELEASE]);
- if test -n "$META_RELEASE"; then
- AC_DEFINE_UNQUOTED([META_RELEASE], ["$META_RELEASE"],
+ if test -n "$SPL_META_RELEASE"; then
+ AC_DEFINE_UNQUOTED([SPL_META_RELEASE], ["$SPL_META_RELEASE"],
[Define the project release.]
)
- AC_SUBST([META_RELEASE])
+ AC_SUBST([SPL_META_RELEASE])
+
+ RELEASE="$SPL_META_RELEASE"
+ AC_SUBST([RELEASE])
fi
- if test -n "$META_NAME" -a -n "$META_VERSION"; then
- META_ALIAS="$META_NAME-$META_VERSION"
- test -n "$META_RELEASE" &&
- META_ALIAS="$META_ALIAS-$META_RELEASE"
- AC_DEFINE_UNQUOTED([META_ALIAS],
- ["$META_ALIAS"],
+ SPL_META_LICENSE=_SPL_AC_META_GETVAL([License]);
+ if test -n "$SPL_META_LICENSE"; then
+ AC_DEFINE_UNQUOTED([SPL_META_LICENSE], ["$SPL_META_LICENSE"],
+ [Define the project license.]
+ )
+ AC_SUBST([SPL_META_LICENSE])
+ fi
+
+ if test -n "$SPL_META_NAME" -a -n "$SPL_META_VERSION"; then
+ SPL_META_ALIAS="$SPL_META_NAME-$SPL_META_VERSION"
+ test -n "$SPL_META_RELEASE" &&
+ SPL_META_ALIAS="$SPL_META_ALIAS-$SPL_META_RELEASE"
+ AC_DEFINE_UNQUOTED([SPL_META_ALIAS],
+ ["$SPL_META_ALIAS"],
[Define the project alias string.]
)
- AC_SUBST([META_ALIAS])
+ AC_SUBST([SPL_META_ALIAS])
fi
- META_DATE=_SPL_AC_META_GETVAL([DATE]);
- if test -n "$META_DATE"; then
- AC_DEFINE_UNQUOTED([META_DATE], ["$META_DATE"],
+ SPL_META_DATA=_SPL_AC_META_GETVAL([Date]);
+ if test -n "$SPL_META_DATA"; then
+ AC_DEFINE_UNQUOTED([SPL_META_DATA], ["$SPL_META_DATA"],
[Define the project release date.]
)
- AC_SUBST([META_DATE])
+ AC_SUBST([SPL_META_DATA])
fi
- META_AUTHOR=_SPL_AC_META_GETVAL([AUTHOR]);
- if test -n "$META_AUTHOR"; then
- AC_DEFINE_UNQUOTED([META_AUTHOR], ["$META_AUTHOR"],
+ SPL_META_AUTHOR=_SPL_AC_META_GETVAL([Author]);
+ if test -n "$SPL_META_AUTHOR"; then
+ AC_DEFINE_UNQUOTED([SPL_META_AUTHOR], ["$SPL_META_AUTHOR"],
[Define the project author.]
)
- AC_SUBST([META_AUTHOR])
+ AC_SUBST([SPL_META_AUTHOR])
fi
m4_pattern_allow([^LT_(CURRENT|REVISION|AGE)$])
- META_LT_CURRENT=_SPL_AC_META_GETVAL([LT_CURRENT]);
- META_LT_REVISION=_SPL_AC_META_GETVAL([LT_REVISION]);
- META_LT_AGE=_SPL_AC_META_GETVAL([LT_AGE]);
- if test -n "$META_LT_CURRENT" \
- -o -n "$META_LT_REVISION" \
- -o -n "$META_LT_AGE"; then
- test -n "$META_LT_CURRENT" || META_LT_CURRENT="0"
- test -n "$META_LT_REVISION" || META_LT_REVISION="0"
- test -n "$META_LT_AGE" || META_LT_AGE="0"
- AC_DEFINE_UNQUOTED([META_LT_CURRENT],
- ["$META_LT_CURRENT"],
+ SPL_META_LT_CURRENT=_SPL_AC_META_GETVAL([LT_Current]);
+ SPL_META_LT_REVISION=_SPL_AC_META_GETVAL([LT_Revision]);
+ SPL_META_LT_AGE=_SPL_AC_META_GETVAL([LT_Age]);
+ if test -n "$SPL_META_LT_CURRENT" \
+ -o -n "$SPL_META_LT_REVISION" \
+ -o -n "$SPL_META_LT_AGE"; then
+ test -n "$SPL_META_LT_CURRENT" || SPL_META_LT_CURRENT="0"
+ test -n "$SPL_META_LT_REVISION" || SPL_META_LT_REVISION="0"
+ test -n "$SPL_META_LT_AGE" || SPL_META_LT_AGE="0"
+ AC_DEFINE_UNQUOTED([SPL_META_LT_CURRENT],
+ ["$SPL_META_LT_CURRENT"],
[Define the libtool library 'current'
version information.]
)
- AC_DEFINE_UNQUOTED([META_LT_REVISION],
- ["$META_LT_REVISION"],
+ AC_DEFINE_UNQUOTED([SPL_META_LT_REVISION],
+ ["$SPL_META_LT_REVISION"],
[Define the libtool library 'revision'
version information.]
)
- AC_DEFINE_UNQUOTED([META_LT_AGE], ["$META_LT_AGE"],
+ AC_DEFINE_UNQUOTED([SPL_META_LT_AGE], ["$SPL_META_LT_AGE"],
[Define the libtool library 'age'
version information.]
)
- AC_SUBST([META_LT_CURRENT])
- AC_SUBST([META_LT_REVISION])
- AC_SUBST([META_LT_AGE])
+ AC_SUBST([SPL_META_LT_CURRENT])
+ AC_SUBST([SPL_META_LT_REVISION])
+ AC_SUBST([SPL_META_LT_AGE])
fi
fi
- AC_MSG_RESULT([$_spl_ac_meta_got_file])
+ AC_MSG_RESULT([$_spl_ac_meta_type])
]
)
-AC_DEFUN([_SPL_AC_META_GETVAL],
- [`perl -n\
- -e "BEGIN { \\$key=shift @ARGV; }"\
- -e "next unless s/^\s*\\$key@<:@:=@:>@//i;"\
- -e "s/^((?:@<:@^'\"#@:>@*(?:(@<:@'\"@:>@)@<:@^\2@:>@*\2)*)*)#.*/\\@S|@1/;"\
- -e "s/^\s+//;"\
- -e "s/\s+$//;"\
- -e "s/^(@<:@'\"@:>@)(.*)\1/\\@S|@2/;"\
- -e "\\$val=\\$_;"\
- -e "END { print \\$val if defined \\$val; }"\
- '$1' $META`]dnl
+dnl # _SPL_AC_META_GETVAL (KEY_NAME_OR_REGEX)
+dnl #
+dnl # Returns the META VALUE associated with the given KEY_NAME_OR_REGEX expr.
+dnl #
+dnl # Despite their resemblance to line noise,
+dnl # the "@<:@" and "@:>@" constructs are quadrigraphs for "[" and "]".
+dnl # <www.gnu.org/software/autoconf/manual/autoconf.html#Quadrigraphs>
+dnl #
+dnl # The "$[]1" and "$[]2" constructs prevent M4 parameter expansion
+dnl # so a literal $1 and $2 will be passed to the resulting awk script,
+dnl # whereas the "$1" will undergo M4 parameter expansion for the META key.
+dnl #
+AC_DEFUN([_SPL_AC_META_GETVAL],
+ [`$AWK -F ':@<:@ \t@:>@+' '$[]1 ~ /^ *$1$/ { print $[]2; exit }' $META`]dnl
)
projects / mirror_spl-debian.git / blobdiff