Prior to this patch, the top-level linker script u-boot.lds
used a simple $(call if_changed) check when generated.
That mechanism misses cases where a possible include file
change induces a change in the u-boot.lds too.
This patch converts it to a stronger check using ($call filechk)
that will also notice differences in file contents and
will catch changes due to pre-processing as well.
Signed-off-by: Jon Loeliger <jon.loeli...@oracle.com>
---
Makefile | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/Makefile b/Makefile
index b807e5c..dcc42b2 100644
--- a/Makefile
+++ b/Makefile
@@ -1052,12 +1052,13 @@ depend dep:
@echo '*** Warning: make $@ is unnecessary now.'
# ---------------------------------------------------------------------------
-quiet_cmd_cpp_lds = LDS $@
-cmd_cpp_lds = $(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ \
- -x assembler-with-cpp -P -o $@ $<
+define filechk_ubootlds
+ ($(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ \
+ -x assembler-with-cpp -P -o - -)
+endef
u-boot.lds: $(LDSCRIPT) prepare FORCE
- $(call if_changed,cpp_lds)
+ $(call filechk,ubootlds)
PHONY += nand_spl
nand_spl: prepare
--
1.9.0
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