From 9993bba6a0abc93f6eb60e1851367cb605811119 Mon Sep 17 00:00:00 2001
From: Mikkel Krautz <mikkel@krautz.dk>
Date: Mon, 17 Apr 2017 16:22:25 +0200
Subject: [PATCH] Backport PR #3033 to 1.2.x: compiler.pri: add
 CONFIG(dpkg-buildflags).

Shelling out to dpkg-buildflags to get the preferred build flags
is now the way to go on Debian.

Previously, our PPA packages used hardening-wrapper to pass the
proper hardening flags to the package. That package is no longer
available in Debian unstable or Ubuntu zesty. To remedy that situation,
we have to add flags ourselves via dpkg-buildflags.

This commit implements a new CONFIG flag, CONFIG(dpkg-buildflags)
which will query dpkg-buildflags and append the retrieved CFLAGS,
CXXFLAGS, CPPFLAGS and LDFLAGS to QMAKE_CFLAGS, QMAKE_CXXFLAGS,
QMAKE_CPPFLAGS, QMAKE_LDFLAGS to ensure they are used in the Mumble
build.
---
 INSTALL      | 4 ++++
 compiler.pri | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/INSTALL b/INSTALL
index 695aa89cbbb..d713be67f17 100644
--- a/INSTALL
+++ b/INSTALL
@@ -157,3 +157,7 @@ CONFIG+=no-xinput2 (Mumble, Linux)
 CONFIG+=no-xboxinput (Mumble, Win32)
  Don't build in support for global shortcuts
  from Xbox controllers via the XInput DLL.
+
+CONFIG+=dpkg-buildflags
+ Add CFLAGS, CXXFLAGS, CPPFLAGS and LDFLAGS
+ from dpkg-buildflags to Mumble's build flags.
diff --git a/compiler.pri b/compiler.pri
index 110ed97ed7f..455b816c7cb 100644
--- a/compiler.pri
+++ b/compiler.pri
@@ -111,6 +111,14 @@ unix {
 }
 
 unix:!macx {
+	CONFIG(dpkg-buildflags) {
+		QMAKE_CFLAGS *= $$system(dpkg-buildflags --get CFLAGS)
+		QMAKE_CXXFLAGS *= $$system(dpkg-buildflags --get CXXFLAGS)
+		QMAKE_CPPFLAGS *= $$system(dpkg-buildflags --get CPPFLAGS)
+		QMAKE_LFLAGS *= $$system(dpkg-buildflags --get LDFLAGS)
+	}
+
+
 	CONFIG(debug, debug|release) {
 		QMAKE_CFLAGS *= -fstack-protector -fPIE -pie
 		QMAKE_CXXFLAGS *= -fstack-protector -fPIE -pie