diff --git a/CMakeLists.txt b/CMakeLists.txt
index 19b9da6..c0ec0c9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9)
+cmake_minimum_required(VERSION 3.5)
 set(MT "mtrace-ng")
 project(${MT} C)
 
@@ -17,7 +17,7 @@ include(CheckFunctionExists)
 include(CheckIncludeFile)
 include(CheckIncludeFiles)
 include(CheckSymbolExists)
-include(CheckIPOSupported)
+#include(CheckIPOSupported)
 
 include(${CMAKE_SOURCE_DIR}/Utilities.cmake)
 
@@ -53,7 +53,7 @@ set(CMAKE_EXE_LINKER_FLAGS_LTO "${CMAKE_LINKER_FLAGS_RELEASE} -flto")
 
 add_compile_options(-Wall -Wextra -Werror -Werror -Wno-implicit-fallthrough)
 
-check_ipo_supported(RESULT IPO)
+#check_ipo_supported(RESULT IPO)
 #if (IPO)
 #	set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
 #endif()
diff --git a/client/client.c b/client/client.c
index 58c66b2..5053d40 100644
--- a/client/client.c
+++ b/client/client.c
@@ -663,7 +663,10 @@ static void signal_exit(int sig)
 	signal(SIGINT, SIG_IGN);
 	signal(SIGTERM, SIG_IGN);
 
+	#pragma GCC diagnostic push
+	#pragma GCC diagnostic ignored "-Wunused-result"
 	write(pipefd[1], &signum, 1);
+	#pragma GCC diagnostic pop
 }
 
 static int scan_process(struct process *process)
diff --git a/debian/control b/debian/control
index 2366008..42e1bf1 100644
--- a/debian/control
+++ b/debian/control
@@ -2,7 +2,7 @@ Source: mtrace-ng
 Section: utils
 Priority: optional
 Maintainer: Package Maintainers <Package-Maintainers@debian.com>
-Build-Depends: debhelper (>= 8.0.0), autotools-dev, binutils-dev,  libreadline6-dev, libselinux1-dev, libtinfo-dev, libelfg0-dev
+Build-Depends: debhelper (>= 8.0.0), autotools-dev, binutils-dev,  libreadline6-dev, libselinux1-dev, libtinfo-dev, libelf-dev, zlib1g-dev, libncurses5-dev, libiberty-dev
 Standards-Version: 3.9.4
 Vcs-Git: https://github.com/sstefani/mtrace.git