diff options
Diffstat (limited to 'Magefile.go')
| -rw-r--r-- | Magefile.go | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Magefile.go b/Magefile.go index 36db529..ecb4060 100644 --- a/Magefile.go +++ b/Magefile.go @@ -29,6 +29,7 @@ const ( binaryName = "ior" workloadBinaryName = "ioworkload" defaultLibbpfgoPath = "../libbpfgo" + libbpfgoRequiredTag = "v0.9.2-libbpf-1.5.1" bpfSourcePath = "internal/c/ior.bpf.c" bpfObjectPath = "internal/c/ior.bpf.o" bpfOutputPath = "ior.bpf.o" @@ -519,6 +520,9 @@ func Prof() error { } func buildBPFObject() error { + if err := ensureLibbpfgoStaticToolchain(); err != nil { + return err + } libbpfgo := libbpfgoPath() includeDir := filepath.Join(libbpfgo, "output") return sh.RunWithV(bpfEnv(), "clang", "-g", "-O2", "-Wall", "-fpie", "-target", "bpf", @@ -529,6 +533,35 @@ func bpfEnv() map[string]string { return map[string]string{"CC": "clang"} } +func ensureLibbpfgoStaticToolchain() error { + libbpfgo := libbpfgoPath() + requiredPaths := []string{ + filepath.Join(libbpfgo, "output"), + filepath.Join(libbpfgo, "output", "libbpf", "libbpf.a"), + filepath.Join(libbpfgo, "selftest", "common"), + } + for _, path := range requiredPaths { + if _, err := os.Stat(path); err == nil { + continue + } else if errors.Is(err, os.ErrNotExist) { + return fmt.Errorf("missing libbpfgo static toolchain path %s\n%s", path, libbpfgoSetupHint(libbpfgo)) + } else { + return fmt.Errorf("stat %s: %w", path, err) + } + } + return nil +} + +func libbpfgoSetupHint(libbpfgo string) string { + return strings.Join([]string{ + fmt.Sprintf("expected a local libbpfgo checkout at %s pinned to %s", libbpfgo, libbpfgoRequiredTag), + "rebuild the static toolchain with:", + fmt.Sprintf(" git -C %s checkout %s", libbpfgo, libbpfgoRequiredTag), + fmt.Sprintf(" git -C %s submodule update --init --recursive", libbpfgo), + fmt.Sprintf(" make -C %s libbpfgo-static", libbpfgo), + }, "\n") +} + func ensureBenchProfilesDir() error { if err := os.MkdirAll(benchProfilesDir, 0o755); err != nil { return fmt.Errorf("ensure %s: %w", benchProfilesDir, err) |