diff --git a/libraries/adlmidi/CMakeLists.txt b/libraries/adlmidi/CMakeLists.txt
index ec831200c..c95bfcb7c 100644
--- a/libraries/adlmidi/CMakeLists.txt
+++ b/libraries/adlmidi/CMakeLists.txt
@@ -5,10 +5,6 @@ use_fast_math()
 
 add_definitions(-DADLMIDI_DISABLE_MIDI_SEQUENCER)
 
-if( ZD_CMAKE_COMPILER_IS_GNUC_COMPATIBLE )
-	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wno-unused-parameter -fomit-frame-pointer" )
-endif()
-
 add_library( adl STATIC
 	adldata.cpp
 	adlmidi.cpp
diff --git a/libraries/bzip2/CMakeLists.txt b/libraries/bzip2/CMakeLists.txt
index 7fefb2bf2..e01d5c09e 100644
--- a/libraries/bzip2/CMakeLists.txt
+++ b/libraries/bzip2/CMakeLists.txt
@@ -2,10 +2,6 @@ cmake_minimum_required( VERSION 2.8.7 )
 
 make_release_only()
 
-if( ZD_CMAKE_COMPILER_IS_GNUC_COMPATIBLE )
-	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -fomit-frame-pointer" )
-endif()
-
 add_definitions( -DBZ_NO_STDIO )
 add_library( bz2 STATIC
     blocksort.c
diff --git a/libraries/lzma/CMakeLists.txt b/libraries/lzma/CMakeLists.txt
index 4246a34f8..b0d7565cd 100644
--- a/libraries/lzma/CMakeLists.txt
+++ b/libraries/lzma/CMakeLists.txt
@@ -2,10 +2,6 @@ cmake_minimum_required( VERSION 2.8.7 )
 
 make_release_only()
 
-if( ZD_CMAKE_COMPILER_IS_GNUC_COMPATIBLE )
-	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -fomit-frame-pointer" )
-endif()
-
 set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_7ZIP_PPMD_SUPPPORT" )
 
 set( LZMA_FILES
diff --git a/libraries/opnmidi/CMakeLists.txt b/libraries/opnmidi/CMakeLists.txt
index 189b22294..955ff4a14 100644
--- a/libraries/opnmidi/CMakeLists.txt
+++ b/libraries/opnmidi/CMakeLists.txt
@@ -9,10 +9,6 @@ add_definitions(-DOPNMIDI_DISABLE_MIDI_SEQUENCER)
 # Disable OPNMIDI's experimental yet emulator (using of it has some issues and missing notes in playback)
 add_definitions(-DOPNMIDI_DISABLE_GX_EMULATOR)
 
-if( ZD_CMAKE_COMPILER_IS_GNUC_COMPATIBLE )
-	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wno-unused-parameter -fomit-frame-pointer" )
-endif()
-
 add_library( opn STATIC
 	chips/gens_opn2.cpp
 	chips/gens/Ym2612_Emu.cpp
diff --git a/libraries/timidity/CMakeLists.txt b/libraries/timidity/CMakeLists.txt
index fd80ba16e..206422b90 100644
--- a/libraries/timidity/CMakeLists.txt
+++ b/libraries/timidity/CMakeLists.txt
@@ -4,8 +4,7 @@ use_fast_math()
 require_stricmp()
 
 if( ZD_CMAKE_COMPILER_IS_GNUC_COMPATIBLE )
-	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wno-unused-parameter -fomit-frame-pointer" )
-	set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11" )
+	set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wno-unused-function -Wno-unused-variable" )
 endif()
 
 include_directories( timidity )
diff --git a/libraries/timidityplus/CMakeLists.txt b/libraries/timidityplus/CMakeLists.txt
index 053b6ffba..81470af24 100644
--- a/libraries/timidityplus/CMakeLists.txt
+++ b/libraries/timidityplus/CMakeLists.txt
@@ -3,7 +3,6 @@ cmake_minimum_required( VERSION 2.8.7 )
 use_fast_math()
 
 if( ZD_CMAKE_COMPILER_IS_GNUC_COMPATIBLE )
-	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wno-unused-parameter -fomit-frame-pointer" )
 	set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11" )
 endif()
 
diff --git a/libraries/zmusic/CMakeLists.txt b/libraries/zmusic/CMakeLists.txt
index 71896491c..06b100246 100644
--- a/libraries/zmusic/CMakeLists.txt
+++ b/libraries/zmusic/CMakeLists.txt
@@ -5,7 +5,6 @@ require_stricmp()
 require_strnicmp()
 
 if( ZD_CMAKE_COMPILER_IS_GNUC_COMPATIBLE )
-	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wno-unused-parameter -fomit-frame-pointer" )
 	set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11" )
 endif()