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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-06-04 19:13:59 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-06-15 19:57:01 +0900 |
| commit | e949f4c2d6a3df2b7fd00e56c0f081b15284906f (patch) | |
| tree | c5b592d884e6eef3680177e384dfd567cc6e03e5 /lib/Kconfig.debug | |
| parent | c6509a24d6ba0f8560a81c032c30d169ba467b0a (diff) | |
| download | lwn-e949f4c2d6a3df2b7fd00e56c0f081b15284906f.tar.gz lwn-e949f4c2d6a3df2b7fd00e56c0f081b15284906f.zip | |
kbuild: add CONFIG_HEADERS_INSTALL and loosen the dependency of samples
Commit 5318321d367c ("samples: disable CONFIG_SAMPLES for UML") used
a big hammer to fix the build errors under the samples/ directory.
Only some samples actually include uapi headers from usr/include.
Introduce CONFIG_HEADERS_INSTALL since 'depends on HEADERS_INSTALL' is
clearer than 'depends on !UML'. If this option is enabled, uapi headers
are installed before starting directory descending.
I added 'depends on HEADERS_INSTALL' to per-sample CONFIG options.
This allows UML to compile some samples.
$ make ARCH=um allmodconfig samples/
[ snip ]
CC [M] samples/configfs/configfs_sample.o
CC [M] samples/kfifo/bytestream-example.o
CC [M] samples/kfifo/dma-example.o
CC [M] samples/kfifo/inttype-example.o
CC [M] samples/kfifo/record-example.o
CC [M] samples/kobject/kobject-example.o
CC [M] samples/kobject/kset-example.o
CC [M] samples/trace_events/trace-events-sample.o
CC [M] samples/trace_printk/trace-printk.o
AR samples/vfio-mdev/built-in.a
AR samples/built-in.a
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 7cdcb962358c..6a6ea4219d1e 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -305,14 +305,23 @@ config DEBUG_FS If unsure, say N. +config HEADERS_INSTALL + bool "Install uapi headers to usr/include" + depends on !UML + help + This option will install uapi headers (headers exported to user-space) + into the usr/include directory for use during the kernel build. + This is unneeded for building the kernel itself, but needed for some + user-space program samples. It is also needed by some features such + as uapi header sanity checks. + config HEADERS_CHECK bool "Run sanity checks on uapi headers when building 'all'" - depends on !UML + depends on HEADERS_INSTALL help - This option will extract the user-visible kernel headers when - building the 'all' target, and will run basic sanity checks on them to - ensure that exported files do not attempt to include files which - were not exported, etc. + This option will run basic sanity checks on uapi headers when + building the 'all' target, for example, ensure that they do not + attempt to include files which were not exported, etc. If you're making modifications to header files which are relevant for userspace, say 'Y', and check the headers |