[U-Boot] [PATCH] x86: Avoid writing temporary asl files into the source tree

[Simon Glass]

At present the iasl tool (Intel ACPI (Advanced Configuration and Power
Interface) Source Language compiler) is called in such a way that it uses
the source directory for its temporary files.

This means we end up with these files when building x86 boards:

   board/dfi/dfi-bt700/dsdt.aml
   board/dfi/dfi-bt700/dsdt.asl.tmp

Update the code to put temporary files in the target directory instead.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 scripts/Makefile.lib | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index de67677f61..6cf1382721 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -397,9 +397,10 @@ $(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_free
 # ---------------------------------------------------------------------------
 quiet_cmd_acpi_c_asl= ASL     $<
 cmd_acpi_c_asl=         \
-	$(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -P $(UBOOTINCLUDE) -o $<.tmp $<; \
-	iasl -p $< -tc $<.tmp $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
-	mv $(patsubst %.asl,%.hex,$<) $@
+	$(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -P $(UBOOTINCLUDE) \
+		-o $@.tmp $< && \
+	iasl -p $@ -tc $@.tmp $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
+	mv $(patsubst %.c,%.hex,$@) $@
 
 $(obj)/dsdt.c:    $(src)/dsdt.asl
 	$(call cmd,acpi_c_asl)
-- 
2.21.0.1020.gf2820cf01a-goog