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| author | Eduard Sanou <dhole@openmailbox.org> | 2016-04-28 09:12:05 +0000 |
|---|---|---|
| committer | Matthias Klose <doko@gcc.gnu.org> | 2016-04-28 09:12:05 +0000 |
| commit | 174f66220d4d39ed503ded1ec3e7ba514cc4283e (patch) | |
| tree | a72db5c4b6147a63f588b215e341061ba7b18de5 /libcpp/macro.c | |
| parent | a564d350951a990136fe6a5010b7eaa165f17c58 (diff) | |
| download | gcc-174f66220d4d39ed503ded1ec3e7ba514cc4283e.zip gcc-174f66220d4d39ed503ded1ec3e7ba514cc4283e.tar.gz gcc-174f66220d4d39ed503ded1ec3e7ba514cc4283e.tar.bz2 | |
c-common.c (get_source_date_epoch): New function...
gcc/c-family/ChangeLog:
2016-04-28 Eduard Sanou <dhole@openmailbox.org>
Matthias Klose <doko@debian.org>
* c-common.c (get_source_date_epoch): New function, gets the environment
variable SOURCE_DATE_EPOCH and parses it as long long with error
handling.
* c-common.h (get_source_date_epoch): Prototype.
* c-lex.c (c_lex_with_flags): set parse_in->source_date_epoch.
gcc/ChangeLog:
2016-04-28 Eduard Sanou <dhole@openmailbox.org>
Matthias Klose <doko@debian.org>
* doc/cppenv.texi: Document SOURCE_DATE_EPOCH environment variable.
libcpp/ChangeLog:
2016-04-28 Eduard Sanou <dhole@openmailbox.org>
Matthias Klose <doko@debian.org>
* include/cpplib.h (cpp_init_source_date_epoch): Prototype.
* init.c (cpp_init_source_date_epoch): New function.
* internal.h: Added source_date_epoch variable to struct
cpp_reader to store a reproducible date.
* macro.c (_cpp_builtin_macro_text): Set pfile->date timestamp from
pfile->source_date_epoch instead of localtime if source_date_epoch is
set, to be used for __DATE__ and __TIME__ macros to help reproducible
builds.
Co-Authored-By: Matthias Klose <doko@debian.org>
From-SVN: r235550
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) { |