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kbuild: fix header installation under fakechroot environment 

Since commit fcc8487d47 ("uapi: export all headers under uapi
directories") fakechroot make bindeb-pkg fails, mismatching files for
directories:
touch: cannot touch 'usr/include/video/uvesafb.h/.install': Not a
directory

This due to a bug in fakechroot:
when using the function $(wildcard $(srcdir)/*/.) in a makefile, under a
fakechroot environment, not only directories but also files are
returned.

To circumvent that, we are using the functions:
$(sort $(dir $(wildcard $(srcdir)/*/))))

Fixes: fcc8487d47 ("uapi: export all headers under uapi directories")
Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Richard Genoud 2017-06-15 10:36:22 +02:00 committed by Masahiro Yamada
parent ff85a1a80e
commit 2f263d1451
1 changed files with 9 additions and 1 deletions
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10
scripts/Makefile.headersinst
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@ -14,7 +14,15 @@ __headers:
include scripts/Kbuild.include
srcdir := $(srctree)/$(obj)
subdirs := $(patsubst $(srcdir)/%/.,%,$(wildcard $(srcdir)/*/.))
# When make is run under a fakechroot environment, the function
# $(wildcard $(srcdir)/*/.) doesn't only return directories, but also regular
# files. So, we are using a combination of sort/dir/wildcard which works
# with fakechroot.
subdirs := $(patsubst $(srcdir)/%/,%,\
$(filter-out $(srcdir)/,\
$(sort $(dir $(wildcard $(srcdir)/*/)))))
# caller may set destination dir (when installing to asm/)
_dst := $(if $(dst),$(dst),$(obj))