From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Randy Dunlap , Rasmus Villemoes , Paul Menzel , Masahiro Yamada Subject: [PATCH 4.4 14/43] tools build: fix # escaping in .cmd files for future Make Date: Mon, 16 Jul 2018 09:36:19 +0200 Message-Id: <20180716073513.350026232@linuxfoundation.org> In-Reply-To: <20180716073511.796555857@linuxfoundation.org> References: <20180716073511.796555857@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Paul Menzel commit 9feeb638cde083c737e295c0547f1b4f28e99583 upstream. In 2016 GNU Make made a backwards incompatible change to the way '#' characters were handled in Makefiles when used inside functions or macros: http://git.savannah.gnu.org/cgit/make.git/commit/?id=c6966b323811c37acedff05b57 Due to this change, when attempting to run `make prepare' I get a spurious make syntax error: /home/earnest/linux/tools/objtool/.fixdep.o.cmd:1: *** missing separator. Stop. When inspecting `.fixdep.o.cmd' it includes two lines which use unescaped comment characters at the top: \# cannot find fixdep (/home/earnest/linux/tools/objtool//fixdep) \# using basic dep data This is because `tools/build/Build.include' prints these '\#' characters: printf '\# cannot find fixdep (%s)\n' $(fixdep) > $(dot-target).cmd; \ printf '\# using basic dep data\n\n' >> $(dot-target).cmd; \ This completes commit 9564a8cf422d ("Kbuild: fix # escaping in .cmd files for future Make"). Link: https://bugzilla.kernel.org/show_bug.cgi?id=197847 Cc: Randy Dunlap Cc: Rasmus Villemoes Cc: stable@vger.kernel.org Signed-off-by: Paul Menzel Signed-off-by: Masahiro Yamada Signed-off-by: Greg Kroah-Hartman --- tools/build/Build.include | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/tools/build/Build.include +++ b/tools/build/Build.include @@ -62,8 +62,8 @@ dep-cmd = $(if $(wildcard $(fixdep)), $(fixdep) $(depfile) $@ '$(make-cmd)' > $(dot-target).tmp; \ rm -f $(depfile); \ mv -f $(dot-target).tmp $(dot-target).cmd, \ - printf '\# cannot find fixdep (%s)\n' $(fixdep) > $(dot-target).cmd; \ - printf '\# using basic dep data\n\n' >> $(dot-target).cmd; \ + printf '$(pound) cannot find fixdep (%s)\n' $(fixdep) > $(dot-target).cmd; \ + printf '$(pound) using basic dep data\n\n' >> $(dot-target).cmd; \ cat $(depfile) >> $(dot-target).cmd; \ printf '%s\n' 'cmd_$@ := $(make-cmd)' >> $(dot-target).cmd)