947a22b33
Paul Spooren
2021-06-05
Subject
build system: use SOURCE_DATE_EPOCH for timestamp if available
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Commit Diff GitHub →
scripts/kconfig/confdata.c+14 -3
| @@ -342,6 +342,8 @@ int conf_write(const char *name) | |
| time_t now; | |
| int use_timestamp = 1; | |
| char *env; | |
| + | char *source_date_epoch; |
| + | struct tm *build_time; |
| dirname[0] = 0; | |
| if (name && name[0]) { | |
| @@ -378,7 +380,16 @@ int conf_write(const char *name) | |
| } | |
| sym = sym_lookup("KERNELVERSION", 0); | |
| sym_calc_value(sym); | |
| - | time(&now); |
| + | |
| + | source_date_epoch = getenv("SOURCE_DATE_EPOCH"); |
| + | if (source_date_epoch && *source_date_epoch) { |
| + | now = strtoull(source_date_epoch, NULL, 10); |
| + | build_time = gmtime(&now); |
| + | } else { |
| + | time(&now); |
| + | build_time = localtime(&now); |
| + | } |
| + | |
| env = getenv("KCONFIG_NOTIMESTAMP"); | |
| if (env && *env) | |
| use_timestamp = 0; | |
| @@ -398,14 +409,14 @@ int conf_write(const char *name) | |
| if (use_timestamp) { | |
| size_t ret = \ | |
| strftime(buf, sizeof(buf), "#define AUTOCONF_TIMESTAMP " | |
| - | "\"%Y-%m-%d %H:%M:%S %Z\"\n", localtime(&now)); |
| + | "\"%Y-%m-%d %H:%M:%S %Z\"\n", build_time); |
| /* if user has Factory timezone or some other odd install, the | |
| * %Z above will overflow the string leaving us with undefined | |
| * results ... so let's try again without the timezone. | |
| */ | |
| if (ret == 0) | |
| strftime(buf, sizeof(buf), "#define AUTOCONF_TIMESTAMP " | |
| - | "\"%Y-%m-%d %H:%M:%S\"\n", localtime(&now)); |
| + | "\"%Y-%m-%d %H:%M:%S\"\n", build_time); |
| } else { /* bbox */ | |
| strcpy(buf, "#define AUTOCONF_TIMESTAMP \"\"\n"); | |
| } | |