Anton Protopopov 55171f2930 bpftool: Fix linkage with statically built libllvm ... Since the commit eb9d1acf63 ("bpftool: Add LLVM as default library for disassembling JIT-ed programs") we might link the bpftool program with the libllvm library. This works fine when a shared libllvm library is available, but fails if we want to link bpftool with a statically built LLVM: [...] /usr/bin/ld: /usr/local/lib/libLLVMSupport.a(CrashRecoveryContext.cpp.o): in function `llvm::CrashRecoveryContextCleanup::~CrashRecoveryContextCleanup()': CrashRecoveryContext.cpp:(.text._ZN4llvm27CrashRecoveryContextCleanupD0Ev+0x17): undefined reference to `operator delete(void*, unsigned long)' /usr/bin/ld: /usr/local/lib/libLLVMSupport.a(CrashRecoveryContext.cpp.o): in function `llvm::CrashRecoveryContext::~CrashRecoveryContext()': CrashRecoveryContext.cpp:(.text._ZN4llvm20CrashRecoveryContextD2Ev+0xc8): undefined reference to `operator delete(void*, unsigned long)' [...] So in the case of static libllvm we need to explicitly link bpftool with required libraries, namely, libstdc++ and those provided by the `llvm-config --system-libs` command. We can distinguish between the shared and static cases by using the `llvm-config --shared-mode` command. Fixes: eb9d1acf63 ("bpftool: Add LLVM as default library for disassembling JIT-ed programs") Signed-off-by: Anton Protopopov <aspsk@isovalent.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/bpf/20221222102627.1643709-1-aspsk@isovalent.com		2022-12-22 20:09:43 +01:00
..
bpftool	bpftool: Fix linkage with statically built libllvm	2022-12-22 20:09:43 +01:00
resolve_btfids	tools/resolve_btfids: Add support for 8-byte BTF sets	2022-07-21 20:59:42 -07:00
runqslower	tools: runqslower: Build and use lightweight bootstrap version of bpftool	2022-07-15 12:01:30 -07:00
.gitignore
bpf_asm.c
bpf_dbg.c	bpf: Simplify the calculation of variables	2021-03-04 19:24:53 -08:00
bpf_exp.l
bpf_exp.y	tools, bpf_asm: Exit non-zero on errors	2021-02-26 22:53:50 +01:00
bpf_jit_disasm.c	tools bpf_jit_disasm: Fix compilation error with new binutils	2022-08-01 15:30:48 -03:00
Makefile	tools bpf_jit_disasm: Don't display disassembler-four-args feature test	2022-08-01 15:31:51 -03:00