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+dnl /usr/share/aclocal/guidod-cvs/ax_set_version_info.m4
+dnl @synopsis AX_SET_VERSION_INFO [(VERSION [,PREFIX])]
+dnl @synopsis default $1 = $PACKAGE_VERSION
+dnl @synopsis default $2 = <none>
+dnl
+dnl This macro is the successor of AC_SET_RELEASEINFO_VERSIONINFO but
+dnl it can be used in parallel because it uses all different variables.
+dnl
+dnl check the $VERSION number and cut the two last digit-sequences off
+dnl which will form a -version-info in a @VERSION_INFO@ ac_subst while
+dnl the rest is going to the -release name in a @RELEASE_INFO@
+dnl ac_subst.
+dnl
+dnl you should keep these two seperate - the release-name may contain
+dnl alpha-characters and can be modified later with extra release-hints
+dnl e.g. RELEASE_INFO="$RELEASE_INFO-debug" for a debug version of your
+dnl lib. The $VERSION_INFO however should not be touched.
+dnl
+dnl example: a VERSION="2.4.18" will be transformed into
+dnl
+dnl RELEASE_INFO = -release 2
+dnl VERSION_INFO = -versioninfo 4:18
+dnl
+dnl then use these two variables and push them to your libtool linker
+dnl
+dnl libtest_la_LIBADD = @RELEASE_INFO@ @VERSION_INFO@
+dnl
+dnl and for a linux-target this will tell libtool to install the lib as
+dnl
+dnl libmy.so libmy.la libmy.a libmy-2.so.4 libmy-2.so.4.0.18
+dnl
+dnl and executables will get link-resolve-infos for libmy-2.so.4 -
+dnl therefore the patch-level is ignored during ldso linking, and ldso
+dnl will use the one with the highest patchlevel. Using just "-release
+dnl $(VERSION)" during libtool-linking would not do that - omitting the
+dnl -version-info will libtool install libmy.so libmy.la libmy.a
+dnl libmy-2.4.18.so and executables would get hardlinked with the
+dnl 2.4.18 version of your lib.
+dnl
+dnl This background does also explain the default dll name for a win32
+dnl target : libtool will choose to make up libmy-2-4.dll for this
+dnl version spec.
+dnl
+dnl this macro does also set the usual three parts of a version spec
+dnl $MAJOR_VERSION.$MINOR_VERSION.$MICRO_VERSION but does not ac_subst
+dnl for the plain AX_SET_VERSION_INFO macro. Use instead one of the
+dnl numbered macros AX_SET_VERSION_INFO1 (use first number for release
+dnl part) or that AX_SET_VERSION_INFO2 (use the first two numbers for
+dnl release part).
+dnl
+dnl You may add sublevel parts like "1.4.2-ac5" where the sublevel is
+dnl just killed from these version/release substvars. That allows to
+dnl grab the version off a .spec file like with AX_SPEC_PACKAGE_VERSION
+dnl where the $VERSION is used to name a tarball or distpack like
+dnl mylib-2.2.9pre4
+dnl
+dnl Unlike earlier macros, you can use this one to break up different
+dnl VERSIONs and put them into different variables, just hint with
+dnl PREFIX-setting - i.e. _VERSION(2.4.5,TEST) will set variables named
+dnl TEST_MAJOR_VERSION=2... and of course $TEST_RELEASE_INFO etc. (for
+dnl the moment, it needs to be a literal prefix *sigh*)
+dnl
+dnl @category Misc
+dnl @author Guido U. Draheim <guidod@gmx.de>
+dnl @version 2005-01-21
+dnl @license GPLWithACException
+
+AC_DEFUN([AX_SET_VERSION_INFO1],[dnl
+AS_VAR_PUSHDEF([MAJOR],ifelse($2,,[MAJOR_VERSION],[$2_MAJOR_VERSION]))dnl
+AS_VAR_PUSHDEF([MINOR],ifelse($2,,[MINOR_VERSION],[$2_MINOR_VERSION]))dnl
+AS_VAR_PUSHDEF([MICRO],ifelse($2,,[MICRO_VERSION],[$2_MICRO_VERSION]))dnl
+AS_VAR_PUSHDEF([PATCH],ifelse($2,,[PATCH_VERSION],[$2_PATCH_VERSION]))dnl
+AS_VAR_PUSHDEF([LTREL],ifelse($2,,[RELEASE_INFO],[$2_RELEASE_INFO]))dnl
+AS_VAR_PUSHDEF([LTVER],ifelse($2,,[VERSION_INFO],[$2_VERSION_INFO]))dnl
+test ".$PACKAGE_VERSION" = "." && PACKAGE_VERSION="$VERSION"
+AC_MSG_CHECKING(ifelse($2,,,[$2 ])out linker version info dnl
+ifelse($1,,$PACKAGE_VERSION,$1) )
+ MINOR=`echo ifelse( $1, , $PACKAGE_VERSION, $1 )`
+ MAJOR=`echo "$MINOR" | sed -e 's/[[.]].*//'`
+ MINOR=`echo "$MINOR" | sed -e "s/^$MAJOR//" -e 's/^.//'`
+ MICRO="$MINOR"
+ MINOR=`echo "$MICRO" | sed -e 's/[[.]].*//'`
+ MICRO=`echo "$MICRO" | sed -e "s/^$MINOR//" -e 's/^.//'`
+ PATCH="$MICRO"
+ MICRO=`echo "$PATCH" | sed -e 's/[[^0-9]].*//'`
+ PATCH=`echo "$PATCH" | sed -e "s/^$MICRO//" -e 's/^[[-.]]//'`
+ if test "_$MICRO" = "_" ; then MICRO="0" ; fi
+ if test "_$MINOR" = "_" ; then MINOR="$MAJOR" ; MAJOR="0" ; fi
+ MINOR=`echo "$MINOR" | sed -e 's/[[^0-9]].*//'`
+ LTREL="-release $MAJOR"
+ LTVER="-version-info $MINOR:$MICRO"
+AC_MSG_RESULT([/$MAJOR/$MINOR:$MICRO (-$MAJOR.so.$MINOR.0.$MICRO)])
+AC_SUBST(MAJOR)
+AC_SUBST(MINOR)
+AC_SUBST(MICRO)
+AC_SUBST(PATCH)
+AC_SUBST(LTREL)
+AC_SUBST(LTVER)
+AS_VAR_POPDEF([LTVER])dnl
+AS_VAR_POPDEF([LTREL])dnl
+AS_VAR_POPDEF([PATCH])dnl
+AS_VAR_POPDEF([MICRO])dnl
+AS_VAR_POPDEF([MINOR])dnl
+AS_VAR_POPDEF([MAJOR])dnl
+])
+
+AC_DEFUN([AX_SET_VERSION_INFO2],[dnl
+AS_VAR_PUSHDEF([MAJOR],ifelse($2,,[MAJOR_VERSION],[$2_MAJOR_VERSION]))dnl
+AS_VAR_PUSHDEF([MINOR],ifelse($2,,[MINOR_VERSION],[$2_MINOR_VERSION]))dnl
+AS_VAR_PUSHDEF([MICRO],ifelse($2,,[MICRO_VERSION],[$2_MICRO_VERSION]))dnl
+AS_VAR_PUSHDEF([PATCH],ifelse($2,,[PATCH_VERSION],[$2_PATCH_VERSION]))dnl
+AS_VAR_PUSHDEF([LTREL],ifelse($2,,[RELEASE_INFO],[$2_RELEASE_INFO]))dnl
+AS_VAR_PUSHDEF([LTVER],ifelse($2,,[VERSION_INFO],[$2_VERSION_INFO]))dnl
+test ".$PACKAGE_VERSION" = "." && PACKAGE_VERSION="$VERSION"
+AC_MSG_CHECKING(ifelse($2,,,[$2 ])out linker version info dnl
+ifelse($1,,$PACKAGE_VERSION,$1) )
+ MINOR=`echo ifelse( $1, , $PACKAGE_VERSION, $1 )`
+ MAJOR=`echo "$MINOR" | sed -e 's/[[.]].*//'`
+ MINOR=`echo "$MINOR" | sed -e "s/^$MAJOR//" -e 's/^.//'`
+ MICRO="$MINOR"
+ MINOR=`echo "$MICRO" | sed -e 's/[[.]].*//'`
+ MICRO=`echo "$MICRO" | sed -e "s/^$MINOR//" -e 's/^.//'`
+ PATCH="$MICRO"
+ MICRO=`echo "$PATCH" | sed -e 's/[[^0-9]].*//'`
+ PATCH=`echo "$PATCH" | sed -e "s/^$MICRO//" -e 's/^[[-.]]//'`
+ test "_$MICRO" != "_" || MICRO="0"
+ if test "_$MINOR" != "_" ; then MINOR="$MAJOR" ; MAJOR="0" ; fi
+ MINOR=`echo "$MINOR" | sed -e 's/[[^0-9]].*//'`
+ LTREL="-release $MAJOR.$MINOR"
+ LTVER="-version-info 0:$MICRO"
+AC_MSG_RESULT([/$MAJOR/$MINOR:$MICRO (-$MAJOR.so.$MINOR.0.$MICRO)])
+AC_SUBST(MAJOR)
+AC_SUBST(MINOR)
+AC_SUBST(MICRO)
+AC_SUBST(PATCH)
+AC_SUBST(LTREL)
+AC_SUBST(LTVER)
+AS_VAR_POPDEF([LTVER])dnl
+AS_VAR_POPDEF([LTREL])dnl
+AS_VAR_POPDEF([PATCH])dnl
+AS_VAR_POPDEF([MICRO])dnl
+AS_VAR_POPDEF([MINOR])dnl
+AS_VAR_POPDEF([MAJOR])dnl
+])
+
+AC_DEFUN([AX_SET_VERSION_INFO],[dnl
+AS_VAR_PUSHDEF([MAJOR],ifelse($2,,[MAJOR_VERSION],[$2_MAJOR_VERSION]))dnl
+AS_VAR_PUSHDEF([MINOR],ifelse($2,,[MINOR_VERSION],[$2_MINOR_VERSION]))dnl
+AS_VAR_PUSHDEF([MICRO],ifelse($2,,[MICRO_VERSION],[$2_MICRO_VERSION]))dnl
+AS_VAR_PUSHDEF([PATCH],ifelse($2,,[PATCH_VERSION],[$2_PATCH_VERSION]))dnl
+AS_VAR_PUSHDEF([LTREL],ifelse($2,,[RELEASE_INFO],[$2_RELEASE_INFO]))dnl
+AS_VAR_PUSHDEF([LTVER],ifelse($2,,[VERSION_INFO],[$2_VERSION_INFO]))dnl
+test ".$PACKAGE_VERSION" = "." && PACKAGE_VERSION="$VERSION"
+AC_MSG_CHECKING(ifelse($2,,,[$2 ])out linker version info dnl
+ifelse($1,,$PACKAGE_VERSION,$1) )
+ MINOR=`echo ifelse( $1, , $PACKAGE_VERSION, $1 )`
+ MAJOR=`echo "$MINOR" | sed -e 's/[[.]].*//'`
+ MINOR=`echo "$MINOR" | sed -e "s/^$MAJOR//" -e 's/^.//'`
+ MICRO="$MINOR"
+ MINOR=`echo "$MICRO" | sed -e 's/[[.]].*//'`
+ MICRO=`echo "$MICRO" | sed -e "s/^$MINOR//" -e 's/^.//'`
+ PATCH="$MICRO"
+ MICRO=`echo "$PATCH" | sed -e 's/[[^0-9]].*//'`
+ PATCH=`echo "$PATCH" | sed -e "s/^$MICRO//" -e 's/[[-.]]//'`
+ if test "_$MICRO" = "_" ; then MICRO="0" ; fi
+ if test "_$MINOR" = "_" ; then MINOR="$MAJOR" ; MAJOR="0" ; fi
+ MINOR=`echo "$MINOR" | sed -e 's/[[^0-9]].*//'`
+ LTREL="-release $MAJOR"
+ LTVER="-version-info $MINOR:$MICRO"
+AC_MSG_RESULT([/$MAJOR/$MINOR:$MICRO (-$MAJOR.so.$MINOR.0.$MICRO)])
+AC_SUBST(LTREL)
+AC_SUBST(LTVER)
+AS_VAR_POPDEF([LTVER])dnl
+AS_VAR_POPDEF([LTREL])dnl
+AS_VAR_POPDEF([PATCH])dnl
+AS_VAR_POPDEF([MICRO])dnl
+AS_VAR_POPDEF([MINOR])dnl
+AS_VAR_POPDEF([MAJOR])dnl
+])
+