[debian-mysql] Bug#865774: mysql-5.7 shouldn't disable PIE

[Adrian Bunk]

Source: mysql-5.7
Version: 5.7.18-1
Severity: normal
Tags: patch

With gcc in stretch defaulting to PIE, hardening=+all,-pie changed
semantics from "enable hardening but not PIE" to "enable all hardening
and explicitely disable the default PIE".
The latter is usually not intended.

The -pie in hardening flags was in some cases required in pre-stretch
releases to avoid build failures caused by (incorrectly) passing -fPIE
to the compiler when building shared libraries or plugins.
This problem does no longer exist.

Please consider applying the following patch:

--- debian/rules.old	2017-06-24 11:54:15.000000000 +0000
+++ debian/rules	2017-06-24 11:54:21.000000000 +0000
@@ -4,7 +4,7 @@
 
 # enable Debian Hardening
 # see: https://wiki.debian.org/Hardening
-export DEB_BUILD_MAINT_OPTIONS = hardening=+all,-pie
+export DEB_BUILD_MAINT_OPTIONS = hardening=+all
 DPKG_EXPORT_BUILDFLAGS = 1
 include /usr/share/dpkg/buildflags.mk