Source: vim Version: 2:7.4.712-2 Severity: wishlist Tags: patch User: reproducible-builds@lists.alioth.debian.org Usertags: timestamps X-Debbugs-CC: reproducible-builds@lists.alioth.debian.org
Hi! While working on Debian's “reproducible builds” effort [1], we have noticed that vim doesn't build reproducibly. It embeds the build date and time into the binaries via __DATE__ and __TIME__ macros. Vim already falls back to a long version string without build date/time on systems where those macros are not available. By disabling the check for __DATE__ and __TIME__ in configure(.in), vim will use the reproducible string. This is done in the attached patch. Regards, Reiner [1]: https://wiki.debian.org/ReproducibleBuilds
diff --git a/debian/patches/debian/remove_date_time_from_version.patch b/debian/patches/debian/remove_date_time_from_version.patch
new file mode 100644
index 0000000..191c8a3
--- /dev/null
+++ b/debian/patches/debian/remove_date_time_from_version.patch
@@ -0,0 +1,25 @@
+Author: Reiner Herrmann <rei...@reiner-h.de>
+Description: Don't include build date and time in long version
+ If configure detects that __DATE__ and __TIME__ are available, it
+ defines HAVE_DATE_TIME, which will lead to the embedding of __DATE__
+ and __TIME__ in the long version string. This makes the build
+ unreproducible.
+ As this is no interesting or relevant information, it can be removed
+ from the version.
+
+Index: vim-7.4.712/src/configure.in
+===================================================================
+--- vim-7.4.712.orig/src/configure.in
++++ vim-7.4.712/src/configure.in
+@@ -2843,11 +2843,6 @@ if test "x$vim_cv_toupper_broken" = "xye
+ AC_DEFINE(BROKEN_TOUPPER)
+ fi
+
+-AC_MSG_CHECKING(whether __DATE__ and __TIME__ work)
+-AC_TRY_COMPILE([#include <stdio.h>], [printf("(" __DATE__ " " __TIME__ ")");],
+- AC_MSG_RESULT(yes); AC_DEFINE(HAVE_DATE_TIME),
+- AC_MSG_RESULT(no))
+-
+ AC_MSG_CHECKING(whether __attribute__((unused)) is allowed)
+ AC_TRY_COMPILE([#include <stdio.h>], [int x __attribute__((unused));],
+ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_ATTRIBUTE_UNUSED),
diff --git a/debian/patches/series b/debian/patches/series
index 7760ddc..d796726 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -7,3 +7,4 @@ upstream/lcs_space-overflow.patch
debian/vim-tiny.patch
debian/disabled-modelines.patch
debian/extra-tex-detection.patch
+debian/remove_date_time_from_version.patch
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