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meson: check if clang supports bpf

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This commit is contained in:
Yu Watanabe 2022-01-13 15:33:46 +09:00
parent ea78d2fb11
commit a6ac8b5a4d
1 changed files with 9 additions and 1 deletions
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meson.build
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@ -995,6 +995,14 @@ else
clang_bin = 'clang' clang_bin = 'clang'
endif endif
clang = find_program(clang_bin, required : bpf_framework_required) clang = find_program(clang_bin, required : bpf_framework_required)
if clang.found()
# Check if 'clang -target bpf' is supported.
clang_supports_bpf = run_command(clang, '-target', 'bpf', '--print-supported-cpus', check : false).returncode() == 0
else
clang_supports_bpf = false
endif
if not meson.is_cross_build() and clang.found() if not meson.is_cross_build() and clang.found()
llvm_strip_bin = run_command(clang, '--print-prog-name', 'llvm-strip', llvm_strip_bin = run_command(clang, '--print-prog-name', 'llvm-strip',
check : true).stdout().strip() check : true).stdout().strip()
@ -1011,7 +1019,7 @@ else
required : bpf_framework_required, required : bpf_framework_required,
version : '>= 5.6') version : '>= 5.6')
deps_found = libbpf.found() and clang.found() and llvm_strip.found() and bpftool.found() deps_found = libbpf.found() and clang.found() and clang_supports_bpf and llvm_strip.found() and bpftool.found()
# Can build BPF program from source code in restricted C # Can build BPF program from source code in restricted C
conf.set10('BPF_FRAMEWORK', deps_found) conf.set10('BPF_FRAMEWORK', deps_found)
endif endif