The current dependency rules mean that the build breaks if the ASN.1 compiler is required but CONFIG_ASN1 isn't set. However, it isn't obvious from the error message about missing files what the actual problem is, so make the build system give an explicit error. Signed-off-by: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> --- scripts/Makefile.build | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/scripts/Makefile.build b/scripts/Makefile.build index a467b9323442..bca7003beac8 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -382,6 +382,11 @@ quiet_cmd_asn1_compiler = ASN.1 $(basename $@).[ch] cmd_asn1_compiler = $(objtree)/scripts/asn1_compiler $< \ $(basename $@).c $(basename $@).h +ifndef CONFIG_ASN1 +$(objtree)/scripts/asn1_compiler: + $(error CONFIG_ASN1 must be defined for the asn1_compiler) +endif + $(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler $(call cmd,asn1_compiler) -- 2.26.2