path: root/scripts/Makefile.asm-generic
diff options
authorSam Ravnborg <sam@ravnborg.org>2011-04-27 22:29:49 +0200
committerMichal Marek <mmarek@suse.cz>2011-04-28 18:01:41 +0200
commitd8ecc5cd8e227bc318513b5306ae88a474b8886d (patch)
treef05fe662c000b8219923b8c464c9c186b599190e /scripts/Makefile.asm-generic
parentkbuild: implement several W= levels (diff)
kbuild: asm-generic support
There is an increasing amount of header files shared between individual architectures in asm-generic. To avoid a lot of dummy wrapper files that just include the corresponding file in asm-generic provide some basic support in kbuild for this. With the following patch an architecture can maintain a list of files in the file arch/$(ARCH)/include/asm/Kbuild To use a generic file just add: generic-y += <name-of-header-file.h> For each file listed kbuild will generate the necessary wrapper in arch/$(ARCH)/include/generated/asm. When installing userspace headers a wrapper is likewise created. The original inspiration for this came from the unicore32 patchset - although a different method is used. The patch includes several improvements from Arnd Bergmann. Michael Marek contributed Makefile.asm-generic. Remis Baima did an intial implementation along to achive the same - see https://patchwork.kernel.org/patch/13352/ Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Guan Xuetao <guanxuetao@mprc.pku.edu.cn> Tested-by: Guan Xuetao <guanxuetao@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'scripts/Makefile.asm-generic')
1 files changed, 23 insertions, 0 deletions
diff --git a/scripts/Makefile.asm-generic b/scripts/Makefile.asm-generic
new file mode 100644
index 000000000000..a687cb697e35
--- /dev/null
+++ b/scripts/Makefile.asm-generic
@@ -0,0 +1,23 @@
+# include/asm-generic contains a lot of files that are used
+# verbatim by several architectures.
+# This Makefile reads the file arch/$(SRCARCH)/include/asm/Kbuild
+# and for each file listed in this file with generic-y creates
+# a small wrapper file in $(obj) (arch/$(SRCARCH)/include/generated/asm)
+kbuild-file := $(srctree)/arch/$(SRCARCH)/include/asm/Kbuild
+include $(kbuild-file)
+include scripts/Kbuild.include
+# Create output directory if not already present
+_dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
+quiet_cmd_wrap = WRAP $@
+cmd_wrap = echo "\#include <asm-generic/$*.h>" >$@
+all: $(patsubst %, $(obj)/%, $(generic-y))
+ $(call cmd,wrap)