emaste created this revision.
emaste added a subscriber: cfe-commits.
`SOURCE_DATE_EPOCH` specifies a UNIX timestamp (number of seconds since 01 Jan
1970 00:00:00 UTC) to be used as the timestamp input for build processes e.g.
`__DATE__` and `__TIME__`
See https://reproducible-builds.org/specs/source-date-epoch/ for details, and
GCC support at https://gcc.gnu.org/onlinedocs/cpp/Environment-Variables.html.
http://reviews.llvm.org/D20791
Files:
lib/Lex/PPMacroExpansion.cpp
Index: lib/Lex/PPMacroExpansion.cpp
===================================================================
--- lib/Lex/PPMacroExpansion.cpp
+++ lib/Lex/PPMacroExpansion.cpp
@@ -1013,7 +1013,12 @@
/// the identifier tokens inserted.
static void ComputeDATE_TIME(SourceLocation &DATELoc, SourceLocation &TIMELoc,
Preprocessor &PP) {
- time_t TT = time(nullptr);
+ time_t TT;
+ const char *envValue = getenv("SOURCE_DATE_EPOCH");
+ if (envValue != nullptr)
+ TT = strtol(envValue, nullptr, 10);
+ else
+ TT = time(nullptr);
struct tm *TM = localtime(&TT);
static const char * const Months[] = {
Index: lib/Lex/PPMacroExpansion.cpp
===================================================================
--- lib/Lex/PPMacroExpansion.cpp
+++ lib/Lex/PPMacroExpansion.cpp
@@ -1013,7 +1013,12 @@
/// the identifier tokens inserted.
static void ComputeDATE_TIME(SourceLocation &DATELoc, SourceLocation &TIMELoc,
Preprocessor &PP) {
- time_t TT = time(nullptr);
+ time_t TT;
+ const char *envValue = getenv("SOURCE_DATE_EPOCH");
+ if (envValue != nullptr)
+ TT = strtol(envValue, nullptr, 10);
+ else
+ TT = time(nullptr);
struct tm *TM = localtime(&TT);
static const char * const Months[] = {
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