Mailing List Archive

[xen staging] build: make sure build fails when running kconfig fails
commit d34e5fa2e8db19f23081f46a3e710bb122130691
Author: Jan Beulich <>
AuthorDate: Thu Feb 22 11:52:47 2024 +0100
Commit: Jan Beulich <>
CommitDate: Thu Feb 22 11:52:47 2024 +0100

build: make sure build fails when running kconfig fails

Because of using "-include", failure to (re)build auto.conf (with
auto.conf.cmd produced as a secondary target) won't stop make from
continuing the build. Arrange for it being possible to drop the - from, requiring that the include be skipped for tools-only targets.
Note that relying on the inclusion in those cases wouldn't be correct
anyway, as it might be a stale file (yet to be rebuilt) which would be
included, while during initial build, the file would be absent

Fixes: 8d4c17a90b0a ("xen/build: silence make warnings about missing auto.conf*")
Reported-by: Roger Pau Monné <>
Signed-off-by: Jan Beulich <>
Reviewed-by: Anthony PERARD <>
xen/Makefile | 1 +
xen/ | 4 +++-
2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/xen/Makefile b/xen/Makefile
index 767e47d6c7..b6c39fc6ae 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -375,6 +375,7 @@ $(KCONFIG_CONFIG): tools_fixdep
# This exploits the 'multi-target pattern rule' trick.
# The syncconfig should be executed only once to make all the targets.
include/config/%.conf include/config/%.conf.cmd: $(KCONFIG_CONFIG)
+ $(Q)rm -f include/config/auto.conf
$(Q)$(MAKE) $(build)=tools/kconfig syncconfig

ifeq ($(CONFIG_DEBUG),y)
diff --git a/xen/ b/xen/
index 8af3dd7277..d759cccee3 100644
--- a/xen/
+++ b/xen/
@@ -15,7 +15,9 @@ srcdir := $(srctree)/$(src)
PHONY := __build

--include $(objtree)/include/config/auto.conf
+ifneq ($(firstword $(subst /, ,$(obj))),tools)
+include $(objtree)/include/config/auto.conf

include $(XEN_ROOT)/
include $(srctree)/scripts/Kbuild.include
generated by git-patchbot for /home/xen/git/xen.git#staging