[libvirt] [PATCH 1/2] build: allow for local gnulib diffs

Commit f7bd00c12 pulled in a gnulib module that fails to compile on mingw. While it would be nice to pull in a newer version of .gnulib that fixes this, it is difficult to backport any .gnulib update to older releases. So, it makes sense to take advantage of gnulib-tool's ability to support local diffs, where we can apply specific diffs in our use of gnulib without waiting for upstream gnulib to pick up those changes, as well as avoiding a wholesale .gnulib update. The existence of local diffs will also make it easier to backport fixes against a tarball (as long as a tarball and libvirt.git share the same .gnulib commit, then the tarball can be patched by applying the same local diffs as a post-release libvirt.git commit, without having to rerun an entire gnulib-tool bootstrap). This patch introduces the framework for supporting local diffs, without actually introducing any. * bootstrap.conf (local_gl_dir): New variable. * autogen.sh (bootstrap_hash): Hash any local diffs, to force a re-bootstrap if just diffs change. * cfg.mk (_update_required): Likewise. --- autogen.sh | 3 +++ bootstrap.conf | 6 ++++-- cfg.mk | 1 + 3 files changed, 8 insertions(+), 2 deletions(-) diff --git a/autogen.sh b/autogen.sh index b64521e..f1591d8 100755 --- a/autogen.sh +++ b/autogen.sh @@ -41,10 +41,13 @@ fi # is required. The first is just the SHA1 that selects a gnulib snapshot. # The second ensures that whenever we change the set of gnulib modules used # by this package, we rerun bootstrap to pull in the matching set of files. +# The third ensures that whenever we change the set of local gnulib diffs, +# we rerun bootstrap to pull in those diffs. bootstrap_hash() { git submodule status | sed 's/^[ +-]//;s/ .*//' git hash-object bootstrap.conf + git ls-tree -d HEAD gnulib/local | awk '{print $3}' } # Ensure that whenever we pull in a gnulib update or otherwise change to a diff --git a/bootstrap.conf b/bootstrap.conf index 4557d2d..6498aba 100644 --- a/bootstrap.conf +++ b/bootstrap.conf @@ -160,9 +160,10 @@ fi # Tell gnulib to: # require LGPLv2+ +# apply any local diffs in gnulib/local/ dir # put *.m4 files in new gnulib/m4/ dir -# put *.[ch] files in new gnulib/lib/ dir. -# import gnulib tests in new gnulib/tests/ dir. +# put *.[ch] files in new gnulib/lib/ dir +# import gnulib tests in new gnulib/tests/ dir gnulib_name=libgnu m4_base=gnulib/m4 source_base=gnulib/lib @@ -172,6 +173,7 @@ gnulib_tool_option_extras="\ --with-tests\ --avoid=pt_chown\ " +local_gl_dir=gnulib/local # Convince bootstrap to use multiple m4 directories. : ${ACLOCAL=aclocal} diff --git a/cfg.mk b/cfg.mk index 463ce0c..574c7a4 100644 --- a/cfg.mk +++ b/cfg.mk @@ -627,6 +627,7 @@ ifeq (0,$(MAKELEVEL)) test -f po/Makevars || { echo 1; exit; }; \ actual=$$(git submodule status | $(_submodule_hash); \ git hash-object bootstrap.conf; \ + git ls-tree -d HEAD gnulib/local | awk '{print $$3}'; \ git diff .gnulib); \ stamp="$$($(_submodule_hash) $(_curr_status) 2>/dev/null)"; \ test "$$stamp" = "$$actual"; echo $$?) -- 1.7.4.4