diff options
| author | Stanislav Fomichev <sdf@google.com> | 2018-11-21 20:29:44 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-11-22 01:15:41 +0300 |
| commit | 8c4905b995c649ac71e21611abc2fcefc904b56a (patch) | |
| tree | 8f81fc53ebbdf9a0c08cd0b6b9b16d5a19d33655 /tools/lib/bpf/Makefile | |
| parent | 462c124c590fe633564192dbfa26e99af788a67c (diff) | |
| download | linux-8c4905b995c649ac71e21611abc2fcefc904b56a.tar.xz | |
libbpf: make sure bpf headers are c++ include-able
Wrap headers in extern "C", to turn off C++ mangling.
This simplifies including libbpf in c++ and linking against it.
v2 changes:
* do the same for btf.h
v3 changes:
* test_libbpf.cpp to test for possible future c++ breakages
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/lib/bpf/Makefile')
| -rw-r--r-- | tools/lib/bpf/Makefile | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile index 425b480bda75..1b4a683a00fc 100644 --- a/tools/lib/bpf/Makefile +++ b/tools/lib/bpf/Makefile @@ -66,7 +66,7 @@ ifndef VERBOSE endif FEATURE_USER = .libbpf -FEATURE_TESTS = libelf libelf-mmap bpf reallocarray +FEATURE_TESTS = libelf libelf-mmap bpf reallocarray cxx FEATURE_DISPLAY = libelf bpf INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(ARCH)/include/uapi -I$(srctree)/tools/include/uapi @@ -148,6 +148,12 @@ LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE)) CMD_TARGETS = $(LIB_FILE) +CXX_TEST_TARGET = $(OUTPUT)test_libbpf + +ifeq ($(feature-cxx), 1) + CMD_TARGETS += $(CXX_TEST_TARGET) +endif + TARGETS = $(CMD_TARGETS) all: fixdep all_cmd @@ -175,6 +181,9 @@ $(OUTPUT)libbpf.so: $(BPF_IN) $(OUTPUT)libbpf.a: $(BPF_IN) $(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^ +$(OUTPUT)test_libbpf: test_libbpf.cpp $(OUTPUT)libbpf.a + $(QUIET_LINK)$(CXX) $^ -lelf -o $@ + define do_install if [ ! -d '$(DESTDIR_SQ)$2' ]; then \ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \ @@ -201,8 +210,8 @@ config-clean: $(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null clean: - $(call QUIET_CLEAN, libbpf) $(RM) *.o *~ $(TARGETS) *.a *.so .*.d .*.cmd \ - $(RM) LIBBPF-CFLAGS + $(call QUIET_CLEAN, libbpf) $(RM) $(TARGETS) $(CXX_TEST_TARGET) \ + *.o *~ *.a *.so .*.d .*.cmd LIBBPF-CFLAGS $(call QUIET_CLEAN, core-gen) $(RM) $(OUTPUT)FEATURE-DUMP.libbpf |