[ 49/75] kbuild: fix make headers_check with make 3.80

Greg Kroah-Hartman
2013-03-18T21:07:11Z

From: Sam Ravnborg <sam@ravnborg.org>

commit c4619bc6fa5149a6ab39be845a39142b6a996ea5 upstream.

Commit 10b63956 ("UAPI: Plumb the UAPI Kbuilds into the user header
installation and checking") introduced a dependency of make 3.81
due to use of $(or ...)

We do not want to lift the requirement to gmake 3.81 just yet...
Included are a straightforward conversion to $(if ...)

Bisected-and-tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
scripts/Makefile.headersinst | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)

--- a/scripts/Makefile.headersinst
+++ b/scripts/Makefile.headersinst
@@ -8,7 +8,7 @@
# ==========================================================================

# called may set destination dir (when installing to asm/)
-_dst := $(or $(destination-y),$(dst),$(obj))
+_dst := $(if $(destination-y),$(destination-y),$(if $(dst),$(dst),$(obj)))

# generated header directory
gen := $(if $(gen),$(gen),$(subst include/,include/generated/,$(obj)))
@@ -48,13 +48,14 @@ all-files := $(header-y) $(genhdr-y)
output-files := $(addprefix $(installdir)/, $(all-files))

input-files := $(foreach hdr, $(header-y), \
- $(or \
+ $(if $(wildcard $(srcdir)/$(hdr)), \
$(wildcard $(srcdir)/$(hdr)), \
- $(wildcard $(oldsrcdir)/$(hdr)), \
- $(error Missing UAPI file $(srcdir)/$(hdr)) \
+ $(if $(wildcard $(oldsrcdir)/$(hdr)), \
+ $(wildcard $(oldsrcdir)/$(hdr)), \
+ $(error Missing UAPI file $(srcdir)/$(hdr))) \
)) \
$(foreach hdr, $(genhdr-y), \
- $(or \
+ $(if $(wildcard $(gendir)/$(hdr)), \
$(wildcard $(gendir)/$(hdr)), \
$(error Missing generated UAPI file $(gendir)/$(hdr)) \
))