linux-kernel - [PATCH v2 1/6] selftests: Create directory when OUTPUT specified

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Date:   Wed, 25 Mar 2020 22:01:28 +0800
From:   Xiaoyao Li <xiaoyao.li@...el.com>
To:     Shuah Khan <shuah@...nel.org>, Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org, Xiaoyao Li <xiaoyao.li@...el.com>
Subject: [PATCH v2 1/6] selftests: Create directory when OUTPUT specified

When OUTPUT specified, it may encounter no directory error if there is
subdir in $TARGET for any of TEST_GEN_PROGS, TEST_GEN_PROGS_EXTENDED, or
TEST_GEN_FILES.

This issue is found by running

	make OUTPUT=/path/to/output

in tools/testing/selftests/kvm

Signed-off-by: Xiaoyao Li <xiaoyao.li@...el.com>
---
 tools/testing/selftests/lib.mk | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index 1c8a1963d03f..78fb00bdf5c4 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -20,6 +20,16 @@ TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))
 TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED))
 TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))
 
+ifneq ($(TEST_GEN_PROGS),)
+$(shell mkdir -p $(sort $(dir $(TEST_GEN_PROGS))))
+endif
+ifneq ($(TEST_GEN_PROGS_EXTENDED),)
+$(shell mkdir -p $(sort $(dir $(TEST_GEN_PROGS_EXTENDED))))
+endif
+ifneq ($(TEST_GEN_FILES),)
+$(shell mkdir -p $(sort $(dir $(TEST_GEN_FILES))))
+endif
+
 ifdef KSFT_KHDR_INSTALL
 top_srcdir ?= ../../../..
 include $(top_srcdir)/scripts/subarch.include
-- 
2.20.1