diff options
Diffstat (limited to 'libcpp/macro.c')
| -rw-r--r-- | libcpp/macro.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/libcpp/macro.c b/libcpp/macro.c index c251553..c2a8376 100644 --- a/libcpp/macro.c +++ b/libcpp/macro.c @@ -357,13 +357,20 @@ _cpp_builtin_macro_text (cpp_reader *pfile, cpp_hashnode *node, time_t tt; struct tm *tb = NULL; - /* (time_t) -1 is a legitimate value for "number of seconds - since the Epoch", so we have to do a little dance to - distinguish that from a genuine error. */ - errno = 0; - tt = time(NULL); - if (tt != (time_t)-1 || errno == 0) - tb = localtime (&tt); + /* Set a reproducible timestamp for __DATE__ and __TIME__ macro + usage if SOURCE_DATE_EPOCH is defined. */ + if (pfile->source_date_epoch != (time_t) -1) + tb = gmtime (&pfile->source_date_epoch); + else + { + /* (time_t) -1 is a legitimate value for "number of seconds + since the Epoch", so we have to do a little dance to + distinguish that from a genuine error. */ + errno = 0; + tt = time (NULL); + if (tt != (time_t)-1 || errno == 0) + tb = localtime (&tt); + } if (tb) { |