improved debian dependencies and resolve

scripts/resolve-debbuilddeps.sh

@@ -32,15 +32,16 @@ function install() {
 }
 
 TO_INSTALL=
+DEPS=
 
 if test -e debian/control.in -a ! -e debian/control; then
     for f in $(sed -n 's, *AX_DEB_DEPEND_IFEXISTS(\([^)]*\)).*,\1,p' configure.ac); do
         if test -n "$(${DO} apt-cache policy -q ${f})" && ((! $(${DO} apt-cache policy ${f} 2>&1 | grep -q 'N: Unable to locate package')) && (! ${DO} dpkg -l "${f}")); then
-            TO_INSTALL+=" ${f}"
+            DEPS+=" ${f}"
         fi
     done
     for f in $(sed -n 's, *AX_DEB_BUILD_DEPEND(\([^)]*\)).*,\1,p' configure.ac); do
-        TO_INSTALL+=" ${f}"
+        DEPS+=" ${f}"
     done
     trap "rm debian/control" INT TERM EXIT
     sed 's,@\(DEB_DEPEND_IFEXISTS\|AX_DEB_BUILD_DEPEND\|AX_DEB_DEPEND\)@,,g' debian/control.in | \
@@ -48,8 +49,7 @@ if test -e debian/control.in -a ! -e debian/control; then
 fi
 
 install dpkg-dev
-DEPS=$(LANG= ${DO} dpkg-checkbuilddeps 2>&1 || true)
-DEPS=$(echo "$DEPS" | sed -n '/Unmet build dependencies/ { s,.*Unmet build dependencies: ,,g; s, ([^)]*),,g; s, *| *,|,g; p}')
+DEPS+=" $(LANG= ${DO} dpkg-checkbuilddeps 2>&1 | sed -n '/Unmet build dependencies/ { s,.*Unmet build dependencies: ,,g; s, ([^)]*),,g; s, *| *,|,g; p}')"
 
 for pa in ${DEPS}; do
     if test ${pa//|/} = ${pa}; then