From 0f3bda4c4490f9fd836090747112f3b00912ae0a Mon Sep 17 00:00:00 2001
From: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Date: Mon, 18 Dec 2017 08:50:12 +0100
Subject: [PATCH] Compile with -O2 optimization even in debug mode

The -O0 default is useless owing to extremely convoluted assembly.
Moreover, many warnings depending on data analysis are ineffective
with -O0.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
---
 CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e8d9b9e87..650b0d43b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -100,6 +100,10 @@ endif()
 set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
 set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
 
+# optimize -O2 even for debug builds
+set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O2")
+set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O2")
+
 # pkgconfig for required libraries
 find_package(PkgConfig)
 include(cmake/Modules/pkgconfig_helper.cmake)