Makefile: use shell to calculate map_size

The error message "bc: command not found" is easily missed since the
build continues.
bc is not a part of coreutils or base-devel. POSIX sh can also do the
calculation.

Signed-off-by: Leon M. Busch-George <leon@georgemail.eu>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>

diff --git a/Makefile b/Makefile
index 91afee668e3134c8237020fad25bef879e9504d7..6f695559d878e77988f759638dd8e0a365e8e692 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1300,12 +1300,17 @@ OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
                $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR),$(if $(CONFIG_OF_SEPARATE),-R .bootpg -R .resetvec))
 
 binary_size_check: u-boot-nodtb.bin FORCE
-       @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
+       @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{ print $$1 }') ; \
        map_size=$(shell cat u-boot.map | \
-               awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
-               | sed 's/0X//g' \
-               | bc); \
-       if [ "" != "$$map_size" ]; then \
+               awk ' \
+                       /_image_copy_start/ { start = $$1 } \
+                       /_image_binary_end/ { end = $$1 } \
+                       END { \
+                               if (start != "" && end != "") \
+                                       print end " " start; \
+                       }' \
+               | sh -c 'read end start && echo $$((end - start))'); \
+       if [ -n "$$map_size" ]; then \
                if test $$map_size -ne $$file_size; then \
                        echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
                        echo "  but u-boot-nodtb.bin shows $$file_size" >&2 ; \