diff options
Diffstat (limited to 'main.cxx')
| -rw-r--r-- | main.cxx | 27 |
1 files changed, 26 insertions, 1 deletions
@@ -111,6 +111,14 @@ usage (systemtap_session& s, int exitcode) << " " << s.module_name << endl << " -o FILE send script output to file, instead of stdout. This supports" << endl << " strftime(3) formats for FILE" << endl + << " -O[0123s] optimization to use for C code. Passed to gcc in pass 4." << endl + << " -O Alias for -O1" << endl + << " -O0 Fast compilation" << endl + << " -O1 Optimize, takes a bit more time" << endl + << " -O2 Optimize more, takes more time" << endl + << " -O3 Optimize even more, takes even more time" << endl + << " -Os Optimize for size, like -O2 but tuned for small code size" << endl + << " Default is -O0." << endl << " -c CMD start the probes, run CMD, and exit when it finishes" << endl << " -x PID sets target() to PID" << endl << " -F run as on-file flight recorder with -o." << endl @@ -403,6 +411,7 @@ main (int argc, char * const argv []) s.ignore_dwarf = false; s.load_only = false; s.skip_badvars = false; + s.gcc_flags = "-O0"; // Location of our signing certificate. // If we're root, use the database in SYSCONFDIR, otherwise @@ -487,7 +496,7 @@ main (int argc, char * const argv []) { "vp", 1, &long_opt, LONG_OPT_VERBOSE_PASS }, { NULL, 0, NULL, 0 } }; - int grc = getopt_long (argc, argv, "hVMvtp:I:e:o:R:r:m:kgPc:x:D:bs:uqwl:d:L:FS:", + int grc = getopt_long (argc, argv, "hVMvtp:I:e:o:O::R:r:m:kgPc:x:D:bs:uqwl:d:L:FS:", long_options, NULL); if (grc < 0) break; @@ -551,6 +560,22 @@ main (int argc, char * const argv []) s.output_file = string (optarg); break; + case 'O': + if (optarg == NULL) + s.gcc_flags = "-O1"; + else + s.gcc_flags = "-O" + string (optarg); + + if (s.gcc_flags != "-O0" && s.gcc_flags != "-O1" + && s.gcc_flags != "-O2" && s.gcc_flags != "-O3" + && s.gcc_flags != "-Os") + { + cerr << "'" << s.gcc_flags << "'" + << " isn't a valid optimization option." << endl; + usage (s, 1); + } + break; + case 'R': s.runtime_path = string (optarg); break; |