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| author | Mykyta Yatsenko <yatsenko@meta.com> | 2026-03-13 03:03:27 +0300 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2026-03-17 00:14:14 +0300 |
| commit | c73a24436698ade1b6a0742e8bcfa04c9ef8fad9 (patch) | |
| tree | ff1b67984ec8a09311f8086635073ab4257934fc /tools/testing/selftests | |
| parent | 6c8e1a9eee0fec802b542dadf768c30c2a183b3c (diff) | |
| download | linux-c73a24436698ade1b6a0742e8bcfa04c9ef8fad9.tar.xz | |
bpftool: Allow explicitly skip llvm, libbfd and libcrypto dependencies
Introduce SKIP_LLVM, SKIP_LIBBFD, and SKIP_CRYPTO build flags that let
users build bpftool without these optional dependencies.
SKIP_LLVM=1 skips LLVM even when detected. SKIP_LIBBFD=1 prevents the
libbfd JIT disassembly fallback when LLVM is absent. Together, they
produce a bpftool with no disassembly support.
SKIP_CRYPTO=1 excludes sign.c and removes the -lcrypto link dependency.
Inline stubs in main.h return errors with a clear message if signing
functions are called at runtime.
Use BPFTOOL_WITHOUT_CRYPTO (not HAVE_LIBCRYPTO_SUPPORT) as the C
define, following the BPFTOOL_WITHOUT_SKELETONS naming convention for
bpftool-internal build config, leaving HAVE_LIBCRYPTO_SUPPORT free for
proper feature detection in the future.
All three flags are propagated through the selftests Makefile to bpftool
sub-builds.
Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20260312-b4-bpftool_build-v2-1-4c9d57133644@meta.com
Diffstat (limited to 'tools/testing/selftests')
| -rw-r--r-- | tools/testing/selftests/bpf/Makefile | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 869b582b1d1f..e27501c06b56 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -41,6 +41,8 @@ LIBELF_LIBS := $(shell $(PKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf) SKIP_DOCS ?= SKIP_LLVM ?= +SKIP_LIBBFD ?= +SKIP_CRYPTO ?= ifeq ($(srctree),) srctree := $(patsubst %/,%,$(dir $(CURDIR))) @@ -333,6 +335,9 @@ $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ + SKIP_LLVM=$(SKIP_LLVM) \ + SKIP_LIBBFD=$(SKIP_LIBBFD) \ + SKIP_CRYPTO=$(SKIP_CRYPTO) \ prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin ifneq ($(CROSS_COMPILE),) @@ -345,6 +350,9 @@ $(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ OUTPUT=$(BUILD_DIR)/bpftool/ \ LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \ LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \ + SKIP_LLVM=$(SKIP_LLVM) \ + SKIP_LIBBFD=$(SKIP_LIBBFD) \ + SKIP_CRYPTO=$(SKIP_CRYPTO) \ prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin endif |