.TH DH_TESTVERSION 1 "" "Debhelper Commands" "Debhelper Commands"
.SH NAME
dh_testversion \- ensure that the correct version of debhelper is installed
.SH SYNOPSIS
.B dh_testversion [debhelper options] [operator] [version]
.SH "DESCRIPTION"
Note: This program is deprecated. You should use build dependencies instead.
.P
dh_testversion compares the version of debhelper against the version you
specify, and if the condition is not met, exits with an error message.
.P
You should use this in your debian/rules files if a new debhelper feature is
introduced, and your package requires that feature to build correctly. Use
debhelper's changelog to figure out the version you need.
.P
Be sure not to overuse dh_testversion. If debhelper version 9.5
introduces a new dh_autofixbugs command, and your package uses it, then if
someone tries to build it with debhelper 1.0, the build will fail anyway when
dh_autofixbugs cannot be found, so there is no need for you to use
dh_testversion.
.SH OPTIONS
.TP
.B debhelper options
See
.BR debhelper (1)
for a list of options common to all debhelper commands.
.TP
.B operator
Optional comparison operator used in comparing the versions. If not 
specified, ">=" is used. For descriptions of the comparison operators, see 
dpkg --help.
.TP
.B version
Version number to compare against the current version of debhelper. If not
specified, dh_testversion does nothing.
.SH EXAMPLES
.TP
.I dh_testversion 1.0
Make sure debhelper version 1.0 or higher is installed.
.TP
.I dh_testversion ge 1.0
Another way to make sure debhelper version 1.0 or higher is installed.
.TP
.I dh_testversion lt 1.0
Make sure a version of debhelper less than version 1.0 is installed.
.SH ENVIRONMENT
See
.BR debhelper (1)
for a list of environment variables that affect all debhelper commands.
.SH "SEE ALSO"
.BR debhelper (1)
.SH AUTHOR
Joey Hess <joeyh@debian.org>