You can build a kernel in a cross compiling environment that doesn't have perl
in the $PATH. Commit 429f7a062e3b broke that for 32 bit arm. Fix it.
Signed-off-by: Rob Landley <r...@landley.net>
---
arch/arm/boot/compressed/Makefile | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/arch/arm/boot/compressed/Makefile
b/arch/arm/boot/compressed/Makefile
index 45a6b9b..33ebeb2 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -117,11 +117,10 @@ ccflags-y := -fpic -mno-single-pic-base -fno-builtin
-I$(obj)
asflags-y := -DZIMAGE
# Supply kernel BSS size to the decompressor via a linker symbol.
-KBSS_SZ = $(shell $(CROSS_COMPILE)nm $(obj)/../../../../vmlinux | \
- perl -e 'while (<>) { \
- $$bss_start=hex($$1) if /^([[:xdigit:]]+) B
__bss_start$$/; \
- $$bss_end=hex($$1) if /^([[:xdigit:]]+) B
__bss_stop$$/; \
- }; printf "%d\n", $$bss_end - $$bss_start;')
+KBSS_SZ := $(shell echo $$(($$(printf '%d+%d' $$( \
+ $(CROSS_COMPILE)nm $(obj)/../../../../vmlinux | \
+ sed -n -e 's/^\([^ ]*\) B __bss_start$$/-0x\1/p' \
+ -e 's/^\([^ ]*\) B __bss_stop$$/0x\1/p') ) )) )
LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
# Supply ZRELADDR to the decompressor via a linker symbol.
ifneq ($(CONFIG_AUTO_ZRELADDR),y)
