[Xen-changelog] [xen staging] EFI: don't repeatedly replace symlinks

[patchbot@xxxxxxx]

commit 9aac4a0b4372d5e3db573641cc1e5a44e3748b0b
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Mon Nov 26 15:43:22 2018 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Nov 26 15:43:22 2018 +0100

    EFI: don't repeatedly replace symlinks
    
    Once created there's no point re-creating them on every incremental
    make. This in particular prevents them from becoming root-owned during
    e.g. "sudo make install-xen", but it also allows (during development)
    to replace them there (instead of in common/efi/) by actual files with
    perhaps slightly changed contents.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/xen/Makefile b/xen/Makefile
index e131cf4b71..7c77c30406 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -137,7 +137,9 @@ $(TARGET): delete-unfresh-files
        $(MAKE) -f $(BASEDIR)/Rules.mk include/xen/compile.h
        [ -e include/asm ] || ln -sf asm-$(TARGET_ARCH) include/asm
        [ -e arch/$(TARGET_ARCH)/efi ] && for f in boot.c runtime.c compat.c 
efi.h;\
-               do ln -nsf ../../../common/efi/$$f arch/$(TARGET_ARCH)/efi/; 
done;\
+               do test -r arch/$(TARGET_ARCH)/efi/$$f || \
+                  ln -nsf ../../../common/efi/$$f arch/$(TARGET_ARCH)/efi/; \
+               done; \
                true
        $(MAKE) -f $(BASEDIR)/Rules.mk -C include
        $(MAKE) -f $(BASEDIR)/Rules.mk -C arch/$(TARGET_ARCH) asm-offsets.s
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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