add configure option dynamic-debian-package-list

When building packages for Debian,
the resulting packages are defined in the file debian/control.
This file must exist at the beginning of the build process.
As Bareos is build for different plattforms, the resulting packages differ.
Therefore configure can overwrite debian/control
so that is matches the configured options.
However, the Debian project does not allow this file to be changed.
Therefore we make this feature optional.
The configure default is to keep the static debian/control file.
When configure is used with the option
--enable-dynamic-debian-package-list
debian/control will be overwritten with the template debian/control.in.

autoconf/configure.in

@@ -1,4 +1,4 @@
-dnl
+
 dnl Process this file with autoconf to produce a configure script.
 dnl
 dnl require a recent autoconf
@@ -844,6 +844,28 @@ AC_SUBST(CONS_LDFLAGS)
 AC_SUBST(READLINE_SRC)
 
 dnl End of readline/conio stuff
+
+dnl -------------------------------------------
+dnl dynamic-debian-package-list   (default off)
+dnl -------------------------------------------
+AC_ARG_ENABLE(dynamic-debian-package-list,
+   AC_HELP_STRING([--enable-dynamic-debian-package-list], [generate debian/control depending on configured options @<:@default=no@:>@]),
+   [
+       if test x$enableval = xyes; then
+	     generate_debian_control=yes
+       fi
+   ]
+)
+
+DEBIAN_CONTROL=
+if test x$generate_debian_control = xyes; then
+   DEBIAN_CONTROL="debian/control"
+fi
+AC_SUBST(DEBIAN_CONTROL)
+
+
+
+
 dnl -----------------------------------------------------------------------
 
 dnl Minimal stuff for readline Makefile configuration
@@ -3892,7 +3914,7 @@ debian|ubuntu|univention)
    PSCMD="ps -e -o pid,command"
    DEBIAN_CONTROL_UNIVENTION_BAREOS=/dev/null
    DEBIAN_CONTROL_UNIVENTION_BAREOS_SCHEMA=/dev/null
-   PFILES="${PFILES} \
+   PFILES="${PFILES} ${DEBIAN_CONTROL} \
       debian/bareos-bat.install \
       debian/bareos-bconsole.install \
       debian/bareos-common.install \
@@ -3921,7 +3943,6 @@ debian|ubuntu|univention)
       debian/bareos-storage.preinst \
       debian/bareos-tools.install \
       debian/bareos-traymonitor.install \
-      debian/control \
       platforms/debian/Makefile \
       platforms/debian/set_dbconfig_vars.sh"
    case "$DISTNAME" in
@@ -4390,6 +4411,7 @@ Configuration on `date`:
    Bareos version:          ${BAREOS} ${VERSION} (${DATE})
    Distribution:            ${DISTNAME}
    Source code location:    ${srcdir}
+   Modify package list:     ${DEBIAN_CONTROL}
    Install binaries:        ${bindir}
    Install system binaries: ${sbindir}
    Install libraries:       ${libdir}

debian/Makefile

@@ -14,10 +14,6 @@ clean:
 	@rm -f -r tmp/*
 
 distclean: clean
-	@find . -type f -a -name "*.in" | sed -e 's/.in$$//' | xargs rm -f
-	# control is generated during configure,
-	# however, for Debian builds a control file must be available before.
-	# Therefore create a link to control.dummy.
-	@ln -s control.dummy control
+	@find . -type f -a -name "*.in" -a ! -name "control.in" | sed -e 's/.in$$//' | xargs rm -f
 
 devclean: clean