[Buildroot] [git commit] core/graph-depends: add option to graph reverse dependencies
Thomas Petazzoni
thomas.petazzoni at free-electrons.com
Tue Oct 25 20:59:05 UTC 2016
commit: https://git.buildroot.net/buildroot/commit/?id=2a2eb55ca73cbe8536a9d9bdd29feaf70a462961
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master
Now that we can dump the reverse dependencies of a package, add the
ability to graph those.
It does not make sense to do a full reverse graph, as it would be
semantically equivalent to the direct graph. So we only provide a
per-package reverse graph.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Cc: Arnout Vandecappelle <arnout at mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
---
Makefile | 3 ++-
package/pkg-generic.mk | 21 ++++++++++++++-------
support/scripts/graph-depends | 18 ++++++++++++++++--
3 files changed, 32 insertions(+), 10 deletions(-)
diff --git a/Makefile b/Makefile
index 5c65f90..c00e200 100644
--- a/Makefile
+++ b/Makefile
@@ -761,7 +761,7 @@ graph-depends: graph-depends-requirements
@$(INSTALL) -d $(GRAPHS_DIR)
@cd "$(CONFIG_DIR)"; \
$(TOPDIR)/support/scripts/graph-depends $(BR2_GRAPH_DEPS_OPTS) \
- -o $(GRAPHS_DIR)/$(@).dot
+ --direct -o $(GRAPHS_DIR)/$(@).dot
dot $(BR2_GRAPH_DOT_OPTS) -T$(BR_GRAPH_OUT) \
-o $(GRAPHS_DIR)/$(@).$(BR_GRAPH_OUT) \
$(GRAPHS_DIR)/$(@).dot
@@ -977,6 +977,7 @@ help:
@echo ' <pkg>-show-depends - List packages on which <pkg> depends'
@echo ' <pkg>-show-rdepends - List packages which have <pkg> as a dependency'
@echo ' <pkg>-graph-depends - Generate a graph of <pkg>'\''s dependencies'
+ @echo ' <pkg>-graph-rdepends - Generate a graph of <pkg>'\''s reverse dependencies'
@echo ' <pkg>-dirclean - Remove <pkg> build directory'
@echo ' <pkg>-reconfigure - Restart the build from the configure step'
@echo ' <pkg>-rebuild - Restart the build from the build step'
diff --git a/package/pkg-generic.mk b/package/pkg-generic.mk
index 81bb82c..3349092 100644
--- a/package/pkg-generic.mk
+++ b/package/pkg-generic.mk
@@ -317,6 +317,16 @@ be selected at a time. Please fix your configuration)
endif
endef
+define pkg-graph-depends
+ @$$(INSTALL) -d $$(GRAPHS_DIR)
+ @cd "$$(CONFIG_DIR)"; \
+ $$(TOPDIR)/support/scripts/graph-depends $$(BR2_GRAPH_DEPS_OPTS) \
+ -p $(1) $(2) -o $$(GRAPHS_DIR)/$$(@).dot
+ dot $$(BR2_GRAPH_DOT_OPTS) -T$$(BR_GRAPH_OUT) \
+ -o $$(GRAPHS_DIR)/$$(@).$$(BR_GRAPH_OUT) \
+ $$(GRAPHS_DIR)/$$(@).dot
+endef
+
################################################################################
# inner-generic-package -- generates the make targets needed to build a
# generic package
@@ -702,13 +712,10 @@ $(1)-show-rdepends:
@echo $$($(2)_RDEPENDENCIES)
$(1)-graph-depends: graph-depends-requirements
- @$$(INSTALL) -d $$(GRAPHS_DIR)
- @cd "$$(CONFIG_DIR)"; \
- $$(TOPDIR)/support/scripts/graph-depends $$(BR2_GRAPH_DEPS_OPTS) \
- -p $(1) -o $$(GRAPHS_DIR)/$$(@).dot
- dot $$(BR2_GRAPH_DOT_OPTS) -T$$(BR_GRAPH_OUT) \
- -o $$(GRAPHS_DIR)/$$(@).$$(BR_GRAPH_OUT) \
- $$(GRAPHS_DIR)/$$(@).dot
+ $(call pkg-graph-depends,$(1),--direct)
+
+$(1)-graph-rdepends: graph-depends-requirements
+ $(call pkg-graph-depends,$(1),--reverse)
$(1)-all-source: $(1)-source
$(1)-all-source: $$(foreach p,$$($(2)_FINAL_ALL_DEPENDENCIES),$$(p)-all-source)
diff --git a/support/scripts/graph-depends b/support/scripts/graph-depends
index cb00383..c3c97cb 100755
--- a/support/scripts/graph-depends
+++ b/support/scripts/graph-depends
@@ -63,6 +63,10 @@ parser.add_argument("--transitive", dest="transitive", action='store_true',
default=False)
parser.add_argument("--no-transitive", dest="transitive", action='store_false',
help="Draw (do not draw) transitive dependencies")
+parser.add_argument("--direct", dest="direct", action='store_true', default=True,
+ help="Draw direct dependencies (the default)")
+parser.add_argument("--reverse", dest="direct", action='store_false',
+ help="Draw reverse dependencies")
args = parser.parse_args()
check_only = args.check_only
@@ -95,6 +99,16 @@ else:
transitive = args.transitive
+if args.direct:
+ rule = "show-depends"
+ arrow_dir = "forward"
+else:
+ if mode == MODE_FULL:
+ sys.stderr.write("--reverse needs a package\n")
+ sys.exit(1)
+ rule = "show-rdepends"
+ arrow_dir = "back"
+
# Get the colours: we need exactly three colours,
# so no need not split more than 4
# We'll let 'dot' validate the colours...
@@ -151,7 +165,7 @@ def get_depends(pkgs):
sys.stderr.write("Getting dependencies for %s\n" % pkgs)
cmd = ["make", "-s", "--no-print-directory" ]
for pkg in pkgs:
- cmd.append("%s-show-depends" % pkg)
+ cmd.append("%s-%s" % (pkg, rule))
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, universal_newlines=True)
output = p.communicate()[0]
if p.returncode != 0:
@@ -418,7 +432,7 @@ def print_pkg_deps(depth, pkg):
add = False
break
if add:
- outfile.write("%s -> %s\n" % (pkg_node_name(pkg), pkg_node_name(d)))
+ outfile.write("%s -> %s [dir=%s]\n" % (pkg_node_name(pkg), pkg_node_name(d), arrow_dir))
print_pkg_deps(depth+1, d)
# Start printing the graph data
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