From: Stanislav Fomichev <sdf@google.com>
To: netdev@vger.kernel.org, bpf@vger.kernel.org
Cc: davem@davemloft.net, ast@kernel.org, daniel@iogearbox.net,
Stanislav Fomichev <sdf@google.com>
Subject: [PATCH bpf] selftests/bpf: bring back c++ include/link test
Date: Mon, 2 Dec 2019 12:21:12 -0800 [thread overview]
Message-ID: <20191202202112.167120-1-sdf@google.com> (raw)
Commit 5c26f9a78358 ("libbpf: Don't use cxx to test_libpf target")
converted existing c++ test to c. We still want to include and
link against libbpf from c++ code, so reinstate this test back,
this time in a form of a selftest with a clear comment about
its purpose.
Fixes: 5c26f9a78358 ("libbpf: Don't use cxx to test_libpf target")
Signed-off-by: Stanislav Fomichev <sdf@google.com>
---
tools/lib/bpf/.gitignore | 1 -
tools/lib/bpf/Makefile | 5 +----
tools/testing/selftests/bpf/.gitignore | 1 +
tools/testing/selftests/bpf/Makefile | 6 +++++-
.../test_libbpf.c => testing/selftests/bpf/test_cpp.cpp} | 0
5 files changed, 7 insertions(+), 6 deletions(-)
rename tools/{lib/bpf/test_libbpf.c => testing/selftests/bpf/test_cpp.cpp} (100%)
diff --git a/tools/lib/bpf/.gitignore b/tools/lib/bpf/.gitignore
index 35bf013e368c..e97c2ebcf447 100644
--- a/tools/lib/bpf/.gitignore
+++ b/tools/lib/bpf/.gitignore
@@ -1,7 +1,6 @@
libbpf_version.h
libbpf.pc
FEATURE-DUMP.libbpf
-test_libbpf
libbpf.so.*
TAGS
tags
diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
index 3d3d024f7b94..defae23a0169 100644
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -152,7 +152,7 @@ GLOBAL_SYM_COUNT = $(shell readelf -s --wide $(BPF_IN_SHARED) | \
VERSIONED_SYM_COUNT = $(shell readelf -s --wide $(OUTPUT)libbpf.so | \
grep -Eo '[^ ]+@LIBBPF_' | cut -d@ -f1 | sort -u | wc -l)
-CMD_TARGETS = $(LIB_TARGET) $(PC_FILE) $(OUTPUT)test_libbpf
+CMD_TARGETS = $(LIB_TARGET) $(PC_FILE)
all: fixdep
$(Q)$(MAKE) all_cmd
@@ -196,9 +196,6 @@ $(OUTPUT)libbpf.so.$(LIBBPF_VERSION): $(BPF_IN_SHARED)
$(OUTPUT)libbpf.a: $(BPF_IN_STATIC)
$(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^
-$(OUTPUT)test_libbpf: test_libbpf.c $(OUTPUT)libbpf.a
- $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(INCLUDES) $^ -lelf -o $@
-
$(OUTPUT)libbpf.pc:
$(QUIET_GEN)sed -e "s|@PREFIX@|$(prefix)|" \
-e "s|@LIBDIR@|$(libdir_SQ)|" \
diff --git a/tools/testing/selftests/bpf/.gitignore b/tools/testing/selftests/bpf/.gitignore
index 4865116b96c7..419652458da4 100644
--- a/tools/testing/selftests/bpf/.gitignore
+++ b/tools/testing/selftests/bpf/.gitignore
@@ -37,5 +37,6 @@ libbpf.so.*
test_hashmap
test_btf_dump
xdping
+test_cpp
/no_alu32
/bpf_gcc
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 085678d88ef8..ba394f0bd631 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -71,7 +71,7 @@ TEST_PROGS_EXTENDED := with_addr.sh \
# Compile but not part of 'make run_tests'
TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
- test_lirc_mode2_user xdping
+ test_lirc_mode2_user xdping test_cpp
TEST_CUSTOM_PROGS = urandom_read
@@ -317,6 +317,10 @@ verifier/tests.h: verifier/*.c
$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
+# Make sure we are able to include and link libbpf against c++.
+$(OUTPUT)/test_cpp: test_cpp.cpp $(BPFOBJ)
+ $(CXX) $(CFLAGS) $^ -lelf -o $@
+
EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) \
prog_tests/tests.h map_tests/tests.h verifier/tests.h \
feature $(OUTPUT)/*.o $(OUTPUT)/no_alu32 $(OUTPUT)/bpf_gcc
diff --git a/tools/lib/bpf/test_libbpf.c b/tools/testing/selftests/bpf/test_cpp.cpp
similarity index 100%
rename from tools/lib/bpf/test_libbpf.c
rename to tools/testing/selftests/bpf/test_cpp.cpp
--
2.24.0.393.g34dc348eaf-goog
next reply other threads:[~2019-12-02 20:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-02 20:21 Stanislav Fomichev [this message]
2019-12-02 21:30 ` [PATCH bpf] selftests/bpf: bring back c++ include/link test Andrii Nakryiko
2019-12-02 21:49 ` Stanislav Fomichev
2019-12-02 21:57 ` Andrii Nakryiko
2019-12-02 22:15 ` Stanislav Fomichev
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