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authorAlexey Neyman <stilor@att.net>2017-09-18 19:11:59 (GMT)
committerGitHub <noreply@github.com>2017-09-18 19:11:59 (GMT)
commit2ebbd3e3183ed18d13884ba6d30df09d16078fd0 (patch)
treefb4fb0a5623fb35852b0cba722c13c50c55924c6 /configure.ac
parentaacd6f3b4a55848192cc7c322cf6a2fb0454a85a (diff)
parentb8c5b2cf27e1933cc51d066afa83bc66529b5db6 (diff)
Merge pull request #784 from bmwiedemann/date
Allow for reproducible builds
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac10
1 files changed, 7 insertions, 3 deletions
diff --git a/configure.ac b/configure.ac
index d84b609..24dcbcd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -424,9 +424,13 @@ AC_SEARCH_LIBS(
# Lastly, take care of crosstool-NG internal values
#--------------------------------------------------------------------
# Hey! We need the date! :-)
-AC_SUBST(
- [DATE],
- [$(date +%Y%m%d)])
+DATE_FMT="%Y%m%d"
+if test "x$SOURCE_DATE_EPOCH" = "x"; then
+ DATE=$(date "+$DATE_FMT")
+else
+ DATE="$(date -u -d "@$SOURCE_DATE_EPOCH" "+$DATE_FMT" 2>/dev/null || date -u -r "$SOURCE_DATE_EPOCH" "+$DATE_FMT" 2>/dev/null || date -u "+$DATE_FMT")"
+fi
+AC_SUBST([DATE])
# Decorate the version string if needed
AS_IF(