From: Ben Hutchings Date: Sat, 04 Mar 2017 01:44:15 +0000 Subject: Kbuild.include: addtree: Remove quotes before matching path Bug-Debian: https://bugs.debian.org/856474 Forwarded: https://marc.info/?l=linux-kbuild&m=148987677205629 systemtap currently fails to build modules when the kernel source and object trees are separate. systemtap adds something like -I"/usr/share/systemtap/runtime" to EXTRA_CFLAGS, and addtree should not adjust this as it's specifying an absolute directory. But since make has no understanding of shell quoting, it does anyway. For a long time this didn't matter, because addtree would still emit the original -I option after the adjusted one. However, commit db547ef19064 ("Kbuild: don't add obj tree in additional includes") changed it to remove the original -I option. Remove quotes (both double and single) before matching against the excluded patterns. References: https://bugs.debian.org/856474 Reported-by: Jack Henschel Reported-by: Ritesh Raj Sarraf Fixes: db547ef19064 ("Kbuild: don't add obj tree in additional includes") Cc: stable@vger.kernel.org # 4.8+ Signed-off-by: Ben Hutchings --- Index: linux/scripts/Kbuild.include =================================================================== --- linux.orig/scripts/Kbuild.include +++ linux/scripts/Kbuild.include @@ -211,7 +211,7 @@ hdr-inst := -f $(srctree)/scripts/Makefi # Prefix -I with $(srctree) if it is not an absolute path. # skip if -I has no parameter addtree = $(if $(patsubst -I%,%,$(1)), \ -$(if $(filter-out -I/% -I./% -I../%,$(1)),$(patsubst -I%,-I$(srctree)/%,$(1)),$(1)),$(1)) +$(if $(filter-out -I/% -I./% -I../%,$(subst $(quote),,$(subst $(squote),,$(1)))),$(patsubst -I%,-I$(srctree)/%,$(1)),$(1)),$(1)) # Find all -I options and call addtree flags = $(foreach o,$($(1)),$(if $(filter -I%,$(o)),$(call addtree,$(o)),$(o)))