From: Andrii Nakryiko <andriin@fb.com>
Date: Tue, 15 Oct 2019 23:00:48 -0700
Subject: selftests/bpf: Add simple per-test targets to Makefile
Patch-mainline: v5.5-rc1
Git-commit: 03dcb78460c294a907eeeec1b756cfcd161d2075
References: bsc#1177028

Currently it's impossible to do `make test_progs` and have only
test_progs be built, because all the binary targets are defined in terms
of $(OUTPUT)/<binary>, and $(OUTPUT) is absolute path to current
directory (or whatever gets overridden to by user).

This patch adds simple re-directing targets for all test targets making
it possible to do simple and nice `make test_progs` (and any other
target).

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191016060051.2024182-5-andriin@fb.com
Acked-by: Gary Lin <glin@suse.com>
---
 tools/testing/selftests/bpf/Makefile |   10 ++++++++++
 1 file changed, 10 insertions(+)

--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -84,6 +84,16 @@ TEST_GEN_PROGS_EXTENDED = test_libbpf_op
 
 include ../lib.mk
 
+# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
+# to build individual tests.
+# NOTE: Semicolon at the end is critical to override lib.mk's default static
+# rule for binaries.
+$(notdir $(TEST_GEN_PROGS)						\
+	 $(TEST_PROGS)							\
+	 $(TEST_PROGS_EXTENDED)						\
+	 $(TEST_GEN_PROGS_EXTENDED)					\
+	 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
+
 # NOTE: $(OUTPUT) won't get default value if used before lib.mk
 TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
 all: $(TEST_CUSTOM_PROGS)