1 /* 2 * Copyright (C) 2015, Wang Nan <wangnan0@huawei.com> 3 * Copyright (C) 2015, Huawei Inc. 4 */ 5 #ifndef __LLVM_UTILS_H 6 #define __LLVM_UTILS_H 7 8 #include "debug.h" 9 10 struct llvm_param { 11 /* Path of clang executable */ 12 const char *clang_path; 13 /* 14 * Template of clang bpf compiling. 5 env variables 15 * can be used: 16 * $CLANG_EXEC: Path to clang. 17 * $CLANG_OPTIONS: Extra options to clang. 18 * $KERNEL_INC_OPTIONS: Kernel include directories. 19 * $WORKING_DIR: Kernel source directory. 20 * $CLANG_SOURCE: Source file to be compiled. 21 */ 22 const char *clang_bpf_cmd_template; 23 /* Will be filled in $CLANG_OPTIONS */ 24 const char *clang_opt; 25 /* Where to find kbuild system */ 26 const char *kbuild_dir; 27 /* 28 * Arguments passed to make, like 'ARCH=arm' if doing cross 29 * compiling. Should not be used for dynamic compiling. 30 */ 31 const char *kbuild_opts; 32 /* 33 * Default is false. If one of the above fields is set by user 34 * explicitly then user_set_llvm is set to true. This is used 35 * for perf test. If user doesn't set anything in .perfconfig 36 * and clang is not found, don't trigger llvm test. 37 */ 38 bool user_set_param; 39 }; 40 41 extern struct llvm_param llvm_param; 42 extern int perf_llvm_config(const char *var, const char *value); 43 44 extern int llvm__compile_bpf(const char *path, void **p_obj_buf, 45 size_t *p_obj_buf_sz); 46 47 /* This function is for test__llvm() use only */ 48 extern int llvm__search_clang(void); 49 #endif 50