epm=repack-rpm: use eepm-rpmbuild if available

bin/epm-repack-rpm

@@ -113,15 +113,22 @@ __epm_repack_to_rpm()
     # Note: install epm-repack for static (package based) dependencies
     assure_exists alien || fatal
 
-    # TODO: check for all systems
-    case $PKGFORMAT in
-        rpm)
-            assure_exists /usr/bin/rpmbuild rpm-build || fatal
-            ;;
-        deb)
-            assure_exists /usr/bin/rpmbuild rpm || fatal
-            ;;
-    esac
+    RPMBUILD=/usr/bin/eepm-rpmbuild
+
+    if [ -x $RPMBUILD ] ; then
+        warning "will use eepm-rpmbuild for rpm packing"
+    else
+        RPMBUILD=/usr/bin/rpmbuild
+        # TODO: check for all systems
+        case $PKGFORMAT in
+            rpm)
+                assure_exists $RPMBUILD rpm-build || fatal
+                ;;
+            deb)
+                assure_exists $RPMBUILD rpm || fatal
+                ;;
+        esac
+    fi
 
     umask 022
 
@@ -199,11 +206,11 @@ __epm_repack_to_rpm()
 
         TARGETARCH=$(epm print info -a | sed -e 's|^x86$|i586|')
 
-        showcmd rpmbuild --buildroot $buildroot --target $TARGETARCH -bb $spec
+        showcmd $RPMBUILD --buildroot $buildroot --target $TARGETARCH -bb $spec
         if [ -n "$verbose" ] ; then
-            a='' rpmbuild --buildroot $buildroot --target $TARGETARCH -bb $spec || fatal
+            a='' $RPMBUILD --buildroot $buildroot --target $TARGETARCH -bb $spec || fatal
         else
-            a='' rpmbuild --buildroot $buildroot --target $TARGETARCH -bb $spec >/dev/null || fatal
+            a='' $RPMBUILD --buildroot $buildroot --target $TARGETARCH -bb $spec >/dev/null || fatal
         fi
 
         # remove copy of source binary package (don't mix with generated)