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List:       linux-api
Subject:    [PATCH v2 3/6] selftests: add default rules for c source file
From:       <bamvor.zhangjian () huawei ! com>
Date:       2016-11-29 11:55:49
Message-ID: 20161129115552.8148-4-bamvor.zhangjian () huawei ! com
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From: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org>

There are difference rules for compiling c source file in different
testcases. In order to enable KBUILD_OUTPUT support in later patch,
this patch introduce the default rules in
"tools/testing/selftest/lib.mk" and remove the existing rules in each
testcase.

Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org>
---
 tools/testing/selftests/exec/Makefile  |  2 --
 tools/testing/selftests/lib.mk         |  3 +++
 tools/testing/selftests/mount/Makefile |  3 ---
 tools/testing/selftests/net/Makefile   |  2 --
 tools/testing/selftests/size/Makefile  |  4 +---
 tools/testing/selftests/vm/Makefile    | 17 ++++++-----------
 6 files changed, 10 insertions(+), 21 deletions(-)

diff --git a/tools/testing/selftests/exec/Makefile b/tools/testing/selftests/exec/Makefile
index b3bf091..9eb1c3e 100644
--- a/tools/testing/selftests/exec/Makefile
+++ b/tools/testing/selftests/exec/Makefile
@@ -11,8 +11,6 @@ execveat.symlink: execveat
 execveat.denatured: execveat
 	cp $< $@
 	chmod -x $@
-%: %.c
-	$(CC) $(CFLAGS) -o $@ $^
 
 TEST_GEN_PROGS := execveat
 TEST_GEN_FILES := execveat.symlink execveat.denatured script subdir
diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index 5b8634c..68d7c01 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -45,4 +45,7 @@ all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
 clean:
 	$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
 
+%: %.c
+	$(CC) $(CFLAGS) $(LDFLAGS) $(LDLIBS) -o $@ $^
+
 .PHONY: run_tests all clean install emit_tests
diff --git a/tools/testing/selftests/mount/Makefile b/tools/testing/selftests/mount/Makefile
index e8fb15e..9093d7f 100644
--- a/tools/testing/selftests/mount/Makefile
+++ b/tools/testing/selftests/mount/Makefile
@@ -2,9 +2,6 @@
 CFLAGS = -Wall \
          -O2
 
-unprivileged-remount-test: unprivileged-remount-test.c
-	$(CC) $(CFLAGS) unprivileged-remount-test.c -o unprivileged-remount-test
-
 TEST_GEN_PROGS := unprivileged-remount-test
 
 include ../lib.mk
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index fe5b36d..fbfe5d0 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -4,8 +4,6 @@ CFLAGS =  -Wall -Wl,--no-as-needed -O2 -g
 CFLAGS += -I../../../../usr/include/
 
 reuseport_bpf_numa: LDFLAGS += -lnuma
-%: %.c
-	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^
 
 TEST_PROGS := run_netsocktests run_afpackettests test_bpf.sh
 TEST_GEN_FILES =  socket
diff --git a/tools/testing/selftests/size/Makefile b/tools/testing/selftests/size/Makefile
index c67f357..4685b3e 100644
--- a/tools/testing/selftests/size/Makefile
+++ b/tools/testing/selftests/size/Makefile
@@ -1,6 +1,4 @@
-
-get_size: get_size.c
-	$(CC) -static -ffreestanding -nostartfiles -s $< -o $@
+CFLAGS := -static -ffreestanding -nostartfiles -s
 
 TEST_GEN_PROGS := get_size
 
diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile
index 323383a..8141d51 100644
--- a/tools/testing/selftests/vm/Makefile
+++ b/tools/testing/selftests/vm/Makefile
@@ -1,6 +1,7 @@
 # Makefile for vm selftests
 
 CFLAGS = -Wall -I ../../../../usr/include $(EXTRA_CFLAGS)
+LDLIBS = -lrt
 TEST_GEN_FILES = compaction_test
 TEST_GEN_FILES += hugepage-mmap
 TEST_GEN_FILES += hugepage-shm
@@ -12,18 +13,12 @@ TEST_GEN_FILES += transhuge-stress
 TEST_GEN_FILES += userfaultfd
 TEST_GEN_FILES += mlock-random-test
 
-%: %.c
-	$(CC) $(CFLAGS) -o $@ $^ -lrt
-userfaultfd: userfaultfd.c ../../../../usr/include/linux/kernel.h
-	$(CC) $(CFLAGS) -O2 -o $@ $< -lpthread
-
-mlock-random-test: mlock-random-test.c
-	$(CC) $(CFLAGS) -o $@ $< -lcap
-
-../../../../usr/include/linux/kernel.h:
-	make -C ../../../.. headers_install
-
 TEST_PROGS := run_vmtests
 
 include ../lib.mk
 
+userfaultfd: LDLIBS += -lpthread ../../../../usr/include/linux/kernel.h
+mlock-random-test: LDLIBS += -lcap
+
+../../../../usr/include/linux/kernel.h:
+	make -C ../../../.. headers_install
-- 
2.10.0

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