Bug#768871: atlas: Missing build dependency

[Ian Zimmerman]

Source: atlas
Version: 3.8.4-9+deb7u1
Severity: normal

I tried to build a custom optimized version of the atlas libs, as
described in the file /usr/share/doc/libatlas3-base/README.Debian.
I got:

 [9+0]atlas-3.8.4$ fakeroot debian/rules custom
rm -f configure-stamp
ncpu=$(LANG=C cpufreq-info | grep "analyzing CPU" -c);\
		cpu=0;\
		while test $cpu -lt $ncpu ; do\
		if test $(cpufreq-info -p 2>&1 > /dev/null; echo $?) \
			-eq 0 -a -z "$(LANG=C cpufreq-info -p -c $cpu | grep performance)" ; then \
			echo "frequency governor on cpu=$cpu is not set to 'performance'"; \
			echo "run: 'sudo cpufreq-set -g performance -c cpu#' for each cpu"; \
			echo "aborting atlas build"; \
			exit 1; \
		fi; \
		cpu=$((cpu+1)) ;\
		done
# Here, the trick is pretty simple:
# * We don't want to build all the optimized version of Atlas. Just the
#   one for the current CPU
# * We override ARCHS by base__
# * Base is the name of the package (libatlas3-base)
# * __ is provided to have the right expression
# * the regexp will consider that atlasArch and atlasISA are empty
#   therefor, leaving the choice of the optimization to Atlas
# * After that, we fall back to the normal build procedure by calling
#   debian/rules itself (yep, recursively)
# Remove all the other archs in this case
dch --local='+custom'  "custom build on: `uname -a`"
/bin/sh: 1: dch: not found
make: *** [custom-stamp] Error 127

Searching on packages.debian.org, I see that the dch program is in the
devscripts package.  Clearly devscripts should be in the Build-Depends
of atlas to avoid this problem.

-- System Information:
Debian Release: 7.7
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.10.59.3 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash