liblockdep: Re-enable liblockdep packages following upstream fixes

This reverts commit 85b468262e "Remove unused liblockdep packaging"
and 87d08943da "liblockdep: Stop trying to build packages, as it
failed to build again", but doesn't restore the patches.  All our
patches, and further build fixes, were applied upstream as of
v4.13-rc1.

debian/.gitignore

@@ -14,10 +14,12 @@
 /files
 /hyperv-daemons/
 /libcpupower*/
+/liblockdep*/
 /libusbip-dev/
 /linux-*
 !/linux-cpupower.install
 !/linux-cpupower.manpages
+/lockdep/
 /po/
 /rules.gen
 /stamps/

debian/changelog

@@ -7,6 +7,7 @@ linux (4.13~rc4-1~exp1) UNRELEASED; urgency=medium
     x86_energy_perf_policy
   * Remove support for upstream DocBook-based documentation, including the
     linux-manual package
+  * liblockdep: Re-enable liblockdep packages following upstream fixes
 
  -- Ben Hutchings <ben@decadent.org.uk>  Sun, 13 Aug 2017 14:10:41 +0100
 

debian/liblockdep-dev.README.Debian

@@ -0,0 +1,13 @@
+liblockdep for Debian
+---------------------
+
+liblockdep does not have proper documentation, but these articles
+provide an introduction:
+
+    https://lwn.net/Articles/536363/
+    http://www.vctlabs.com/posts/2014/Jul/09/liblockdep/
+
+'lockdep-design.txt' explains some more detail about what lockdep
+does, both in the kernel and as liblockdep.
+
+ -- Ben Hutchings <ben@decadent.org.uk>, Fri, 14 Aug 2015 14:22:55 +0200

debian/liblockdep-dev.docs

@@ -0,0 +1 @@
+Documentation/locking/lockdep-design.txt

debian/liblockdep-dev.install

@@ -0,0 +1,3 @@
+usr/include/liblockdep
+usr/lib/*/liblockdep.a
+usr/lib/*/liblockdep.so

debian/lockdep.dirs

@@ -0,0 +1 @@
+usr/bin

debian/rules.d/tools/Makefile

@@ -1,5 +1,6 @@
 SUBDIRS = \
 	hv \
+	lib/lockdep \
 	perf \
 	power \
 	usb/usbip

debian/rules.d/tools/lib/lockdep/Makefile

@@ -0,0 +1,20 @@
+include $(top_rulesdir)/Makefile.inc
+
+DEB_HOST_MULTIARCH := $(shell dpkg-architecture -qDEB_HOST_MULTIARCH)
+
+MAKE_LOCKDEP := +$(MAKE) -C $(top_srcdir)/$(OUTDIR) O=$(CURDIR) V=1 \
+	prefix=/usr libdir_relative=lib/$(DEB_HOST_MULTIARCH) \
+	LIBLOCKDEP_VERSION=$(VERSION) \
+	CONFIG_FLAGS='$(CFLAGS) $(filter -D%,$(CPPFLAGS))' LDFLAGS='$(LDFLAGS)'
+
+unexport CFLAGS
+
+all:
+	$(MAKE_LOCKDEP)
+
+install:
+	$(MAKE_LOCKDEP) install
+	mkdir -p $(DESTDIR)/usr/include
+	cp -R $(top_srcdir)/$(OUTDIR)/include/liblockdep $(DESTDIR)/usr/include/
+	ln -s liblockdep.so.$(VERSION) \
+		$(DESTDIR)/usr/lib/$(DEB_HOST_MULTIARCH)/liblockdep.so

debian/rules.d/tools/lib/lockdep/lockdep.in

@@ -0,0 +1,2 @@
+#!/bin/sh
+LD_PRELOAD="liblockdep.so.@VERSION@ $LD_PRELOAD" exec "$@"

debian/rules.real

@@ -74,7 +74,7 @@ binary-indep: install-support
 
 ifneq ($(DO_TOOLS),False)
   build-arch-arch: $(STAMPS_DIR)/build-tools
-  binary-arch-arch: install-kbuild install-usbip install-cpupower
+  binary-arch-arch: install-kbuild install-usbip install-liblockdep install-cpupower
   ifneq ($(filter alpha amd64 arm64 armel armhf hppa i386 mips mips64 mips64el mipsel powerpc powerpcspe ppc64 ppc64el s390 s390x sh4 sparc sparc64,$(DEB_HOST_ARCH)),)
     ifeq ($(filter nopython,$(DEB_BUILD_PROFILES)),)
       binary-arch-arch: install-perf
@@ -83,6 +83,7 @@ ifneq ($(DO_TOOLS),False)
   ifneq ($(filter i386 amd64 x32,$(DEB_HOST_ARCH)),)
     binary-arch-arch: install-hyperv-daemons
   endif
+  binary-indep: install-lockdep
 endif
 
 binary-indep-featureset: install-common-headers_$(FEATURESET)
@@ -675,4 +676,52 @@ endif
 	dh_md5sums
 	dh_builddeb
 
+install-liblockdep: DH_OPTIONS = -pliblockdep$(VERSION) -pliblockdep-dev
+install-liblockdep: DIR = $(CURDIR)/debian/liblockdep-tmp
+install-liblockdep: $(STAMPS_DIR)/build-tools
+	dh_testdir
+	dh_testroot
+	dh_prep
+	$(call make-tools,tools/lib/lockdep) install DESTDIR=$(DIR)
+	env -u DH_OPTIONS dh_install -pliblockdep$(VERSION) --sourcedir=$(DIR) \
+		'usr/lib/*/liblockdep.so.*'
+	dh_install --sourcedir=$(DIR)
+	dh_installchangelogs
+ifeq (,$(filter nodoc,$(DEB_BUILD_PROFILES)))
+	dh_installdocs
+endif
+	dh_strip
+	dh_compress
+	dh_fixperms
+	env -u DH_OPTIONS dh_makeshlibs -pliblockdep$(VERSION) \
+		liblockdep$(VERSION)
+	dh_installdeb
+	dh_shlibdeps
+	dh_gencontrol
+	dh_md5sums
+	dh_builddeb
+
+install-lockdep: PACKAGE_NAME = lockdep
+install-lockdep: DH_OPTIONS = -p$(PACKAGE_NAME)
+install-lockdep: DIR = $(CURDIR)/debian/$(PACKAGE_NAME)
+install-lockdep:
+	dh_testdir
+	dh_testroot
+	dh_prep
+	dh_installdirs
+# Upstream lockdep preload script is not suitable for installation
+	sed 's/@VERSION@/$(VERSION)/' debian/rules.d/tools/lib/lockdep/lockdep.in \
+		> $(DIR)/usr/bin/lockdep
+	chmod 755 $(DIR)/usr/bin/lockdep
+	dh_installchangelogs
+ifeq (,$(filter nodoc,$(DEB_BUILD_PROFILES)))
+	dh_installdocs
+endif
+	dh_compress
+	dh_fixperms
+	dh_installdeb
+	dh_gencontrol
+	dh_md5sums
+	dh_builddeb
+
 # vim: filetype=make

debian/templates/control.tools.in

@@ -106,3 +106,34 @@ Description: Support daemons for Linux running on Hyper-V
  .
  hv_vss_daemon provides the volume shadow copy service (VSS), allowing
  the host to freeze the guest filesystems while taking a snapshot.
+
+Package: lockdep
+Build-Profiles: <!stage1 !pkg.linux.notools>
+Architecture: all
+Depends: ${shlibs:Depends}, ${misc:Depends}, liblockdep@version@
+Recommends: liblockdep-dev
+Section: devel
+Multi-Arch: allowed
+Description: Runtime locking correctness validator
+ lockdep is a wrapper for programs that use the pthreads API, which detects
+ actual and potential deadlocks and other locking bugs.
+
+Package: liblockdep@version@
+Build-Profiles: <!stage1 !pkg.linux.notools>
+Architecture: linux-any
+Depends: ${shlibs:Depends}, ${misc:Depends}
+Section: libs
+Multi-Arch: same
+Description: Runtime locking correctness validator (shared library)
+ liblockdep is a library for programs that use the pthreads API, which can
+ be used to detect actual and potential deadlocks and other locking bugs.
+
+Package: liblockdep-dev
+Build-Profiles: <!stage1 !pkg.linux.notools>
+Architecture: linux-any
+Depends: ${shlibs:Depends}, ${misc:Depends}, liblockdep@version@ (= ${binary:Version})
+Section: libdevel
+Multi-Arch: same
+Description: Runtime locking correctness validator (development files)
+ liblockdep is a library for programs that use the pthreads API, which can
+ be used to detect actual and potential deadlocks and other locking bugs.