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authorMasahiro Yamada <yamada.masahiro@socionext.com>2019-06-04 19:13:59 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2019-06-15 19:57:01 +0900
commite949f4c2d6a3df2b7fd00e56c0f081b15284906f (patch)
treec5b592d884e6eef3680177e384dfd567cc6e03e5 /Makefile
parentc6509a24d6ba0f8560a81c032c30d169ba467b0a (diff)
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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 'Makefile')
-rw-r--r--Makefile8
1 files changed, 4 insertions, 4 deletions
diff --git a/Makefile b/Makefile
index 4bc9c708bcdd..f3fd2a549970 100644
--- a/Makefile
+++ b/Makefile
@@ -1053,9 +1053,6 @@ vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
targets := vmlinux
-# Some samples need headers_install.
-samples: headers_install
-
# The actual objects are generated when descending,
# make sure no implicit rule kicks in
$(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
@@ -1199,6 +1196,10 @@ headers_check: headers_install
$(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1
$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi dst=include HDRCHECK=1
+ifdef CONFIG_HEADERS_INSTALL
+prepare: headers_install
+endif
+
ifdef CONFIG_HEADERS_CHECK
all: headers_check
endif
@@ -1744,7 +1745,6 @@ build-dir = $(patsubst %/,%,$(dir $(build-target)))
PHONY += /
/: ./
-samples/: headers_install
%/: prepare FORCE
$(Q)$(MAKE) KBUILD_MODULES=1 $(build)=$(build-dir)