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| author | Fangrui Song <maskray@google.com> | 2023-06-24 03:18:56 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2023-06-29 16:46:17 +0300 |
| commit | bbaf1ff06af49e856501024abbe161d96c1f0d66 (patch) | |
| tree | 7dabb39068dd6e1a411e094c55d7d2c32581a0b1 /Documentation/bpf/llvm_reloc.rst | |
| parent | da1a055d01ed0c18402dd1f1934096ac4bb36ada (diff) | |
| download | linux-bbaf1ff06af49e856501024abbe161d96c1f0d66.tar.xz | |
bpf: Replace deprecated -target with --target= for Clang
The -target option has been deprecated since clang 3.4 in 2013. Therefore, use
the preferred --target=bpf form instead. This also matches how we use --target=
in scripts/Makefile.clang.
Signed-off-by: Fangrui Song <maskray@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Link: https://github.com/llvm/llvm-project/commit/274b6f0c87a6a1798de0a68135afc7f95def6277
Link: https://lore.kernel.org/bpf/20230624001856.1903733-1-maskray@google.com
Diffstat (limited to 'Documentation/bpf/llvm_reloc.rst')
| -rw-r--r-- | Documentation/bpf/llvm_reloc.rst | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/bpf/llvm_reloc.rst b/Documentation/bpf/llvm_reloc.rst index e4a777a6a3a2..450e6403fe3d 100644 --- a/Documentation/bpf/llvm_reloc.rst +++ b/Documentation/bpf/llvm_reloc.rst @@ -28,7 +28,7 @@ For example, for the following code:: return g1 + g2 + l1 + l2; } -Compiled with ``clang -target bpf -O2 -c test.c``, the following is +Compiled with ``clang --target=bpf -O2 -c test.c``, the following is the code with ``llvm-objdump -dr test.o``:: 0: 18 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 r1 = 0 ll @@ -157,7 +157,7 @@ and ``call`` instructions. For example:: return gfunc(a, b) + lfunc(a, b) + global; } -Compiled with ``clang -target bpf -O2 -c test.c``, we will have +Compiled with ``clang --target=bpf -O2 -c test.c``, we will have following code with `llvm-objdump -dr test.o``:: Disassembly of section .text: @@ -203,7 +203,7 @@ The following is an example to show how R_BPF_64_ABS64 could be generated:: int global() { return 0; } struct t { void *g; } gbl = { global }; -Compiled with ``clang -target bpf -O2 -g -c test.c``, we will see a +Compiled with ``clang --target=bpf -O2 -g -c test.c``, we will see a relocation below in ``.data`` section with command ``llvm-readelf -r test.o``:: |