diff options
| -rw-r--r-- | src/gallium/auxiliary/os/os_misc.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/os/os_misc.c b/src/gallium/auxiliary/os/os_misc.c index d6b83e90e3d..82e49577352 100644 --- a/src/gallium/auxiliary/os/os_misc.c +++ b/src/gallium/auxiliary/os/os_misc.c @@ -69,10 +69,21 @@ os_log_message(const char *message) static FILE *fout = NULL; if (!fout) { +#ifdef DEBUG /* one-time init */ const char *filename = os_get_option("GALLIUM_LOG_FILE"); - if (filename) - fout = fopen(filename, "w"); + if (filename) { + const char *mode = "w"; + if (filename[0] == '+') { + /* If the filename is prefixed with '+' then open the file for + * appending instead of normal writing. + */ + mode = "a"; + filename++; /* skip the '+' */ + } + fout = fopen(filename, mode); + } +#endif if (!fout) fout = stderr; } |