Commit-ID: ee8acabab9ef5a6d85102aaf5db23388fe09994c
Gitweb: http://git.kernel.org/tip/ee8acabab9ef5a6d85102aaf5db23388fe09994c
Author: H. Peter Anvin <hpa@xxxxxxxxx>
AuthorDate: Tue, 5 May 2009 21:17:15 -0700
Committer: H. Peter Anvin <hpa@xxxxxxxxx>
CommitDate: Thu, 7 May 2009 13:37:54 -0700
kbuild: allow compressors (gzip, bzip2, lzma) to take multiple inputs
Allow the compression commands in Kbuild (i.e. gzip, bzip2, lzma) to
take multiple input files and emit the concatenated compressed
output. This avoids an intermediate step when a kernel image is built
from multiple components, such as the relocatable x86-32 kernel.
[ Impact: new build feature, not yet used ]
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
---
scripts/Makefile.lib | 11 ++++++++---
scripts/bin_size | 8 ++++++--
2 files changed, 14 insertions(+), 5 deletions(-)
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 9796195..35dfdf6 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -183,7 +183,8 @@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
# ---------------------------------------------------------------------------
quiet_cmd_gzip = GZIP $@
-cmd_gzip = gzip -f -9 < $< > $@
+cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -f -9 > $@) || \
+ (rm -f $@ ; false)
# Bzip2
@@ -193,10 +194,14 @@ cmd_gzip = gzip -f -9 < $< > $@
size_append=$(CONFIG_SHELL) $(srctree)/scripts/bin_size
quiet_cmd_bzip2 = BZIP2 $@
-cmd_bzip2 = (bzip2 -9 < $< && $(size_append) $<) > $@ || (rm -f $@ ; false)
+cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
+ bzip2 -9 && $(size_append) $(filter-out FORCE,$^)) > $@ || \
+ (rm -f $@ ; false)
# Lzma
# ---------------------------------------------------------------------------
quiet_cmd_lzma = LZMA $@
-cmd_lzma = (lzma -9 -c $< && $(size_append) $<) >$@ || (rm -f $@ ; false)
+cmd_lzma = (cat $(filter-out FORCE,$^) | \
+ lzma -9 && $(size_append) $(filter-out FORCE,$^)) > $@ || \
+ (rm -f $@ ; false)
diff --git a/scripts/bin_size b/scripts/bin_size
index 43e1b36..55f2161 100644
--- a/scripts/bin_size
+++ b/scripts/bin_size
@@ -1,10 +1,14 @@
#!/bin/sh
if [ $# = 0 ] ; then
- echo Usage: $0 file
+ echo Usage: $0 file...
fi
-size_dec=`stat -c "%s" $1`
+size_dec=0
+for file; do
+ fsize=`stat -c "%s" $file`
+ size_dec=`expr $size_dec + $fsize`
+done
size_hex_echo_string=`printf "%08x" $size_dec |
sed 's/\(..\)\(..\)\(..\)\(..\)/\\\\x\4\\\\x\3\\\\x\2\\\\x\1/g'`
/bin/echo -ne $size_hex_echo_string
--
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