./distribute: recreate temporary directory each time a source or bina…

…ry package is built

 * you no longer have to make an entire clean when e.g. uploading
   for another Ubuntu release. Therefore, the source tar ball is
   preserved (it must be the same for all packages with the same
   upstream version).
 * also try to extract the SciTECO version from the ./configure script
   instead of hardcoding it in ./distribute

distribute

@@ -4,7 +4,10 @@
 SRCDIR=.
 ABS_SRCDIR=$(abspath $(SRCDIR))
 
-SCITECO_VERSION = 0.6
+# Try to extract version from ./configure
+SCITECO_VERSION = $(shell $(SRCDIR)/configure --version | \
+                          sed -n 's/SciTECO configure //p')
+
 SCITECO_SRC = sciteco-$(SCITECO_VERSION).tar.gz
 
 $(SCITECO_SRC):
@@ -15,7 +18,9 @@ all : $(SCITECO_SRC) debian mingw-binary
 # $(UBUNTU) sets the Ubuntu distribution and fixes the package's
 # version
 debian-prepare: debian-temp/
+.PHONY: debian-temp/
 debian-temp/ : $(SCITECO_SRC)
+	rm -rf debian-temp/
 	mkdir debian-temp/
 	(cd debian-temp/; \
 	 cp ../$(SCITECO_SRC) \
@@ -36,6 +41,19 @@ else
 DEBUILD_FLAGS := -us -uc
 endif
 
+# Whether to upload upstream sources (dist tarball) to the PPA
+# This must be YES for new releases.
+# It must be NO after the tarball has been
+# uploaded once, else launchpad refuses
+# building the source package.
+# Launchpad will also refuse new versions of the
+# tar ball for the same release, so the tarball
+# should NOT be cleaned when uploading for multiple
+# Ubuntu versions.
+# If a bug is found only during PPA building,
+# the upstream version must be increased since we
+# cannot upload a new tarball and adding patches to the
+# Debian package would be idiotic :-(
 UPLOAD_SRC ?= yes
 ifeq ($(UPLOAD_SRC),yes)
 DEBUILD_FLAGS += -sa