From 54e3a82d9c14f3071db4a4f78312c0e31534696c Mon Sep 17 00:00:00 2001
From: Mark Hatle <mhatle@windriver.com>
Date: Fri, 20 Aug 2010 08:54:53 -0700
Subject: [PATCH] package.bbclass: Add perfile dependency identification

Using the rpmdeps commands, we enable the discovery of per-file dependencies.
These dependencies are generated for all packages, and may or may not be used
by any given packaging mechanism.  Currently RPROVIDES and RDEPENDS are
generated in this process.

Signed-off-by: Mark Hatle <mhatle@windriver.com>
---
 meta/classes/package.bbclass | 82 +++++++++++++++++++++++++++++++++---
 1 file changed, 77 insertions(+), 5 deletions(-)

diff --git a/meta/classes/package.bbclass b/meta/classes/package.bbclass
index 0b5ff1d0d7..77c2a01967 100644
--- a/meta/classes/package.bbclass
+++ b/meta/classes/package.bbclass
@@ -14,17 +14,21 @@
 # c) populate_packages - Split the files in PKGD into separate packages in PKGDEST/<pkgname>
 #    Also triggers the binary stripping code to put files in -dbg packages.
 #
-# d) package_do_shlibs - Look at the shared libraries generated and autotmatically add any 
+# d) package_do_filedeps - Collect perfile run-time dependency metadata
+#    The data is stores in FILER{PROVIDES,DEPENDS}_file_pkg variables with
+#    a list of affected files in FILER{PROVIDES,DEPENDS}FLIST_pkg
+#
+# e) package_do_shlibs - Look at the shared libraries generated and autotmatically add any 
 #    depenedencies found. Also stores the package name so anyone else using this library 
 #    knows which package to depend on.
 #
-# e) package_do_pkgconfig - Keep track of which packages need and provide which .pc files
+# f) package_do_pkgconfig - Keep track of which packages need and provide which .pc files
 #
-# f) read_shlibdeps - Reads the stored shlibs information into the metadata
+# g) read_shlibdeps - Reads the stored shlibs information into the metadata
 #
-# g) package_depchains - Adds automatic dependencies to -dbg and -dev packages
+# h) package_depchains - Adds automatic dependencies to -dbg and -dev packages
 #
-# h) emit_pkgdata - saves the packaging data into PKGDATA_DIR for use in later 
+# i) emit_pkgdata - saves the packaging data into PKGDATA_DIR for use in later 
 #    packaging steps
 
 inherit packagedata
@@ -32,6 +36,9 @@ inherit packagedata
 PKGD    = "${WORKDIR}/package"
 PKGDEST = "${WORKDIR}/packages-split"
 
+# rpm is used for the per-file dependency identification
+PACKAGE_DEPENDS += "rpm-native"
+
 def legitimize_package_name(s):
 	"""
 	Make sure package names are legitimate strings
@@ -519,6 +526,14 @@ python emit_pkgdata() {
 		write_if_exists(sf, pkg, 'pkg_postrm')
 		write_if_exists(sf, pkg, 'pkg_preinst')
 		write_if_exists(sf, pkg, 'pkg_prerm')
+		write_if_exists(sf, pkg, 'FILERPROVIDESFLIST')
+		for dfile in (bb.data.getVar('FILERPROVIDESFLIST_' + pkg, d, True) or "").split():
+			write_if_exists(sf, pkg, 'FILERPROVIDES_' + dfile)
+
+		write_if_exists(sf, pkg, 'FILERDEPENDSFLIST')
+		for dfile in (bb.data.getVar('FILERDEPENDSFLIST_' + pkg, d, True) or "").split():
+			write_if_exists(sf, pkg, 'FILERDEPENDS_' + dfile)
+
 		sf.close()
 
 
@@ -545,6 +560,62 @@ fi
 SHLIBSDIR = "${STAGING_DIR_HOST}/shlibs"
 SHLIBSWORKDIR = "${WORKDIR}/shlibs"
 
+RPMDEPS = "${STAGING_LIBDIR_NATIVE}/rpm/${BUILD_ARCH}-${BUILD_OS}-rpmdeps"
+
+# Collect perfile run-time dependency metadata
+# Output:
+#  FILERPROVIDESFLIST_pkg - list of all files w/ deps
+#  FILERPROVIDES_filepath_pkg - per file dep
+#
+#  FILERDEPENDSFLIST_pkg - list of all files w/ deps
+#  FILERDEPENDS_filepath_pkg - per file dep
+
+python package_do_filedeps() {
+	import os
+
+	pkgdest = bb.data.getVar('PKGDEST', d, True)
+	packages = bb.data.getVar('PACKAGES', d, True)
+
+	cmd = bb.data.expand("${STAGING_LIBDIR_NATIVE}/rpm/perfile_rpmdeps.sh", d)
+	rpmdeps = bb.data.expand("${RPMDEPS}", d)
+
+	# Quick routine to process the results of the rpmdeps call...
+	def process_deps(pipe, pkg, varname):
+		dep_files = ""
+		for line in pipe:
+			key = "";
+			value = "";
+			# We expect two items on each line
+			# 1 - filepath
+			# 2 - dep list
+			line_list = line.split(None,1);
+			if len(line_list) <= 0 or len(line_list) > 2:
+				bb.error("deps list length error! " + len(line_list));
+			if len(line_list) == 2:
+				file = line_list[0];
+				value = line_list[1]
+				file = file.replace(pkgdest + "/" + pkg, "")
+				dep_files = dep_files + " " + file
+				key = "FILE" + varname + "_" + file + "_" + pkg
+				bb.data.setVar(key, value, d)
+		bb.data.setVar("FILE" + varname + "_" + pkg, dep_files, d)
+
+	# Determine dependencies
+	for pkg in packages.split():
+		if pkg.endswith('-dbg'):
+			continue
+
+		# Process provides
+		dep_pipe = os.popen(cmd + " --rpmdeps " + rpmdeps + " --provides " + pkgdest + "/" + pkg)
+
+		process_deps(dep_pipe, pkg, 'RPROVIDES')
+
+		# Process requirements
+		dep_pipe = os.popen(cmd + " --rpmdeps " + rpmdeps + " --requires " + pkgdest + "/" + pkg)
+
+		process_deps(dep_pipe, pkg, 'RDEPENDS')
+}
+
 python package_do_shlibs() {
 	import re
 
@@ -976,6 +1047,7 @@ PACKAGEFUNCS ?= "perform_packagecopy \
                 ${PACKAGE_PREPROCESS_FUNCS} \
 		package_do_split_locales \
 		populate_packages \
+		package_do_filedeps \
 		package_do_shlibs \
 		package_do_pkgconfig \
 		read_shlibdeps \