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meson: use the compiler command array as is

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Also check if the flags used when building bpf are supported by clang.
This commit is contained in:
Yu Watanabe 2022-01-13 15:43:24 +09:00
parent a6ac8b5a4d
commit dc7e9c1bc4
1 changed files with 20 additions and 7 deletions
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27
meson.build
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@ -990,20 +990,32 @@ if want_bpf_framework == 'false'
else
# Support 'versioned' clang/llvm-strip binaries, as seen on Debian/Ubuntu
# (like clang-10/llvm-strip-10)
clang_bin = cc.get_id() == 'clang' ? cc.cmd_array()[0] : 'clang'
if meson.is_cross_build() or clang_bin.contains('afl-clang') or clang_bin.contains('hfuzz-clang')
clang_bin = 'clang'
if meson.is_cross_build() or cc.get_id() != 'clang' or cc.cmd_array()[0].contains('afl-clang') or cc.cmd_array()[0].contains('hfuzz-clang')
r = find_program('clang', required : bpf_framework_required)
clang_found = r.found()
if clang_found
if meson.version().version_compare('>= 0.55')
clang = [r.full_path()]
else
clang = [r.path()]
endif
endif
# Assume that the required flags are supported by the found clang.
clang_supports_flags = clang_found
else
clang_found = true
clang = cc.cmd_array()
clang_supports_flags = cc.has_argument('-Wno-compare-distinct-pointer-types')
endif
clang = find_program(clang_bin, required : bpf_framework_required)
if clang.found()
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',
check : true).stdout().strip()
else
@ -1019,7 +1031,8 @@ else
required : bpf_framework_required,
version : '>= 5.6')
deps_found = libbpf.found() and clang.found() and clang_supports_bpf and llvm_strip.found() and bpftool.found()
deps_found = libbpf.found() and clang_found and clang_supports_bpf and clang_supports_flags and llvm_strip.found() and bpftool.found()
# Can build BPF program from source code in restricted C
conf.set10('BPF_FRAMEWORK', deps_found)
endif