Commits

Thomas Petazzoni committed 664f2707246
Makefile: test if dot exists before using it in graph-depends The 'graph-depends' logic uses the 'dot' program from Graphviz to draw the dependency graph, but it doesn't check its existence before starting the generation of the graph, which can lead to user confusion as reported in: http://lists.busybox.net/pipermail/buildroot/2014-June/099278.html With this commit, we first test if the 'dot' program is available, and if it's not, we error out with a clear error message: $ make graph-depends ERROR: The 'dot' program from Graphviz is needed for graph-depends make: *** [graph-depends] Error 1 [Peter: send error message to stderr instead] Reported-by: Dallas Clement <dallas.a.clement@gmail.com> Cc: Dallas Clement <dallas.a.clement@gmail.com> Cc: Yann E. MORIN <yann.morin.1998@free.fr> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>