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Subject[PATCH 06/12] selftests: lib.mk: Add rule to build object file from C source file
Date
Currently there are rules to compile and link one or more C or
assembler source files into a full executable, and to assemble a single
assembler source into an object file.

Add a generic rule to compile a single C source file into an object
file, for reuse of object files in multiple executables.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
tools/testing/selftests/lib.mk | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index 8b0f16409ed7eb53..77a71264d8c5a743 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -141,6 +141,7 @@ clean:
#
ifneq ($(KBUILD_SRC),)
LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
+COMPILE.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
endif
@@ -151,6 +152,9 @@ ifeq ($(OVERRIDE_TARGETS),)
$(OUTPUT)/%:%.c
$(LINK.c) $^ $(LDLIBS) -o $@

+$(OUTPUT)/%.o:%.c
+ $(COMPILE.c) $^ -o $@
+
$(OUTPUT)/%.o:%.S
$(COMPILE.S) $^ -o $@

--
2.17.1
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