Change in coreboot[master]: lib/Makefile.inc: fix hex-to-bin conversion of SPD files

[Michael Niewöhner (Code Review)]

Michael Niewöhner has submitted this change. ( https://review.coreboot.org/c/coreboot/+/45207 )

Change subject: lib/Makefile.inc: fix hex-to-bin conversion of SPD files
......................................................................

lib/Makefile.inc: fix hex-to-bin conversion of SPD files

This fixes the hex-to-bin conversion command, used to generated binary
SPD files from hexdumps.

An issue that only appeared on one of my systems, where conversion of
'01 02 03' to binary resulted in \x01\x32\x03 instead of \x01\x02\x03:

for c in 01 02 03; do printf $(printf '%o' 0x$c); done | xxd -g 1
00000000: 01 32 03                                         .2.

The reason for this was that the syntax in lib/Makefile.inc is wrong,
because the backslash must be escaped due to chaining two printf
commands.

Change-Id: I36b0efac81977e95d3cc4f189c3ae418379fe315
Signed-off-by: Michael Niewöhner 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45207
Reviewed-by: Angel Pons 
Reviewed-by: Patrick Georgi 
Tested-by: build bot (Jenkins) 
---
M src/lib/Makefile.inc
1 file changed, 1 insertion(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Patrick Georgi: Looks good to me, approved
  Angel Pons: Looks good to me, approved

diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index 4ce133a..e23b9de 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -362,7 +362,7 @@
 $(LIB_SPD_BIN): $(LIB_SPD_DEPS)
    for f in $(LIB_SPD_DEPS); \
     do for c in $$(cat $$f | grep --binary-files=text -v ^#); \
-	  do printf $$(printf '%o' 0x$$c); \
+	  do printf $$(printf '\%o' 0x$$c); \
     done; \
    done > $@