.user_set_param = false,
};
+static void version_notice(void);
+
int perf_llvm_config(const char *var, const char *value)
{
if (!strstarts(var, "llvm."))
return ret;
}
+static int search_program_and_warn(const char *def, const char *name,
+ char *output)
+{
+ int ret = search_program(def, name, output);
+
+ if (ret) {
+ pr_err("ERROR:\tunable to find %s.\n"
+ "Hint:\tTry to install latest clang/llvm to support BPF. Check your $PATH\n"
+ " \tand '%s-path' option in [llvm] section of ~/.perfconfig.\n",
+ name, name);
+ version_notice();
+ }
+ return ret;
+}
+
#define READ_SIZE 4096
static int
read_from_pipe(const char *cmd, void **p_buf, size_t *p_read_sz)
if (!template)
template = CLANG_BPF_CMD_DEFAULT_TEMPLATE;
- err = search_program(llvm_param.clang_path,
+ err = search_program_and_warn(llvm_param.clang_path,
"clang", clang_path);
- if (err) {
- pr_err(
-"ERROR:\tunable to find clang.\n"
-"Hint:\tTry to install latest clang/llvm to support BPF. Check your $PATH\n"
-" \tand 'clang-path' option in [llvm] section of ~/.perfconfig.\n");
- version_notice();
+ if (err)
return -ENOENT;
- }
/*
* This is an optional work. Even it fail we can continue our
force_set_env("WORKING_DIR", kbuild_dir ? : ".");
if (opts) {
- err = search_program(llvm_param.llc_path, "llc", llc_path);
- if (err) {
- pr_err("ERROR:\tunable to find llc.\n"
- "Hint:\tTry to install latest clang/llvm to support BPF. Check your $PATH\n"
- " \tand 'llc-path' option in [llvm] section of ~/.perfconfig.\n");
- version_notice();
+ err = search_program_and_warn(llvm_param.llc_path, "llc", llc_path);
+ if (err)
goto errout;
- }
err = -ENOMEM;
if (asprintf(&pipe_template, "%s -emit-llvm | %s -march=bpf %s -filetype=obj -o -",