fix: 5.10.x kernels use llvm-12

Signed-off-by: Austin Brogle <[email protected]>

pkg/driverbuilder/builder/amazonlinux.go

@@ -81,7 +81,7 @@ modinfo {{ .ModuleFullPath }}
 {{ if .BuildProbe }}
 # Build the eBPF probe
 cd {{ .DriverBuildDir }}/bpf
-make LLC=/usr/bin/llc-7 CLANG=/usr/bin/clang-7 CC=/usr/bin/gcc KERNELDIR=/tmp/kernel
+make LLC=/usr/bin/llc-{{ .LLVMVersion }} CLANG=/usr/bin/clang-{{ .LLVMVersion }} CC=/usr/bin/gcc KERNELDIR=/tmp/kernel
 ls -l probe.o
 {{ end }}
 `
@@ -95,6 +95,7 @@ type amazonlinuxTemplateData struct {
  ModuleFullPath string
  BuildModule bool
  BuildProbe bool
+ LLVMVersion string
 }
 
 // Script compiles the script to build the kernel module and/or the eBPF probe.
@@ -138,6 +139,7 @@ func script(c Config, targetType Type) (string, error) {
  ModuleFullPath: ModuleFullPath,
  BuildModule: len(c.Build.ModuleFilePath) > 0,
  BuildProbe: len(c.Build.ProbeFilePath) > 0,
+ LLVMVersion: amazonLLVMVersionFromKernelRelease(kv),
  }
 
  buf := bytes.NewBuffer(nil)
@@ -325,9 +327,21 @@ func bunzip(data io.Reader) (res []byte, err error) {
 }
 
 func amazonGccVersionFromKernelRelease(kr kernelrelease.KernelRelease) string {
- switch kr.Version {
+ switch kr.Version {
  case "5":
  return "10"
- }
- return "8"
+ }
+ return "8"
+}
+
+func amazonLLVMVersionFromKernelRelease(kr kernelrelease.KernelRelease) string {
+ switch kr.Version {
+ case "5":
+ switch kr.PatchLevel {
+ case "10":
+ return "12"
+ }
+ return "7"
+ }
+ return "7"
 }