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[Bug 1724148] [NEW] package does not build reproducibly

To: qutimdevelop@xxxxxxxxxxxxxxxxxxx
From: "Bernhard M. Wiedemann" <1724148@xxxxxxxxxxxxxxxxxx>
Date: Tue, 17 Oct 2017 07:05:10 -0000
Reply-to: Bug 1724148 <1724148@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

While working on the reproducible builds effort, I found that
when building the qutim package for openSUSE Linux, there were slight differences between each build in several .so files like

/usr/lib64/qutim/plugins/libsdlsound.so differs in ELF section .rodata
--- /tmp/tmp.yl865OqfE2/tmp.KPxqyhEYIe  2017-09-23 15:43:47.779396435 +0000
+++ /tmp/tmp.yl865OqfE2/tmp.podTPZ6puH  2017-09-23 15:43:47.783396458 +0000
@@ -14,8 +14,8 @@
  58f0 204c6179 65720000 70617474 65726e3d   Layer..pattern=
  5900 51555449 4d5f504c 5547494e 5f564552  QUTIM_PLUGIN_VER
  5910 49464943 4154494f 4e5f4441 54410a64  IFICATION_DATA.d
- 5920 65627567 69643d39 34613864 39313536  ebugid=94a8d9156
- 5930 36386634 3436370a 6c696271 7574696d  68f4467.libqutim
+ 5920 65627567 69643d62 38636534 36353136  ebugid=b8ce46516
+ 5930 30663162 3734350a 6c696271 7574696d  0f1b745.libqutim
  5940 3d302e33 2e332e30 00000000 00000000  =0.3.3.0........

coming from
+++ /home/abuild/rpmbuild/BUILD/qutim-0.3.3/build/CMakeCache.txt   2018-11-14 02:16:42.249233141 +0000
@@ -3128,97 +3128,97 @@
 QUTIM_ADDITIONAL_SOURCES:INTERNAL=
 QUTIM_INCLUDE_DIR:INTERNAL=/home/abuild/rpmbuild/BUILD/qutim-0.3.3/build/core/libqutim/include
 QUTIM_LIBRARY:INTERNAL=libqutim
-QUTIM_accountcreator_DEBUG_ID:INTERNAL=857d7147e841e0e7
-QUTIM_addcontactdlg_DEBUG_ID:INTERNAL=4184d813f2f957ce

coming from core/cmake/QutIMMacros.cmake using RANDOM

IMHO the usage of RANDOM should be replaced with a hash over the relevant input
so that it changes if and only if that input changes.

** Affects: qutim
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1724148

Title:
  package does not build reproducibly

Status in qutim:
  New

Bug description:
  While working on the reproducible builds effort, I found that
  when building the qutim package for openSUSE Linux, there were slight differences between each build in several .so files like

  /usr/lib64/qutim/plugins/libsdlsound.so differs in ELF section .rodata
  --- /tmp/tmp.yl865OqfE2/tmp.KPxqyhEYIe  2017-09-23 15:43:47.779396435 +0000
  +++ /tmp/tmp.yl865OqfE2/tmp.podTPZ6puH  2017-09-23 15:43:47.783396458 +0000
  @@ -14,8 +14,8 @@
    58f0 204c6179 65720000 70617474 65726e3d   Layer..pattern=
    5900 51555449 4d5f504c 5547494e 5f564552  QUTIM_PLUGIN_VER
    5910 49464943 4154494f 4e5f4441 54410a64  IFICATION_DATA.d
  - 5920 65627567 69643d39 34613864 39313536  ebugid=94a8d9156
  - 5930 36386634 3436370a 6c696271 7574696d  68f4467.libqutim
  + 5920 65627567 69643d62 38636534 36353136  ebugid=b8ce46516
  + 5930 30663162 3734350a 6c696271 7574696d  0f1b745.libqutim
    5940 3d302e33 2e332e30 00000000 00000000  =0.3.3.0........

  coming from
  +++ /home/abuild/rpmbuild/BUILD/qutim-0.3.3/build/CMakeCache.txt   2018-11-14 02:16:42.249233141 +0000
  @@ -3128,97 +3128,97 @@
   QUTIM_ADDITIONAL_SOURCES:INTERNAL=
   QUTIM_INCLUDE_DIR:INTERNAL=/home/abuild/rpmbuild/BUILD/qutim-0.3.3/build/core/libqutim/include
   QUTIM_LIBRARY:INTERNAL=libqutim
  -QUTIM_accountcreator_DEBUG_ID:INTERNAL=857d7147e841e0e7
  -QUTIM_addcontactdlg_DEBUG_ID:INTERNAL=4184d813f2f957ce

  coming from core/cmake/QutIMMacros.cmake using RANDOM

  IMHO the usage of RANDOM should be replaced with a hash over the relevant input
  so that it changes if and only if that input changes.

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