Kernel headers must be installed into $(objtree)/usr/include to avoid
the build failure of samples.
Commit ddea05fa148b ("kbuild: make samples depend on headers_install")
addressed this, but "samples/" is only used for the single target build.
"make samples/" properly installs kernel headers, but it does not work
for general building because a phony target "sample" (no trailing slash)
is used.
Reported-by: David Howells <dhowells@xxxxxxxxxx>
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---
Changes in v2:
- Correct commit log (backslash -> slash)
- Fix a typo
Makefile | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
index 7a3c454..1e47d13 100644
--- a/Makefile
+++ b/Makefile
@@ -1009,9 +1009,10 @@ ifdef CONFIG_GDB_SCRIPTS
endif
+$(call if_changed,link-vmlinux)
-# Build samples along the rest of the kernel
+# Build samples along the rest of the kernel. This needs headers_install.
ifdef CONFIG_SAMPLES
vmlinux-dirs += samples
+samples: headers_install
endif
# The actual objects are generated when descending,
--
2.7.4
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