Optimize symbol visibility on Linux

Author: aacuevas

Builds/Linux/Makefile

@@ -19,9 +19,9 @@ ifeq ($(CONFIG),Debug)
   endif
 
   CPPFLAGS := $(DEPFLAGS) -D "LINUX=1" -D "DEBUG=1" -D "_DEBUG=1" -D "JUCER_LINUX_MAKE_7346DA2A=1" -D "JUCE_APP_VERSION=0.3.5" -D "JUCE_APP_VERSION_HEX=0x305" -I /usr/include -I /usr/include/freetype2 -I ../../JuceLibraryCode -I ../../JuceLibraryCode/modules
-  CFLAGS += $(CPPFLAGS) $(TARGET_ARCH) -g -ggdb -O3 -rdynamic -g -pg -std=c++0x
+  CFLAGS += $(CPPFLAGS) $(TARGET_ARCH) -g -ggdb -O3 -rdynamic -g -pg -std=c++0x -fvisibility=hidden
   CXXFLAGS += $(CFLAGS)
-  LDFLAGS += $(TARGET_ARCH) -L$(BINDIR) -L$(LIBDIR) -L/usr/X11R6/lib/ -L/usr/local/include -lGL -lX11 -lXext -lXinerama -lasound -ldl -lfreetype -lpthread -lrt -pg -ldl -lXext -lGLU -rdynamic -fPIC
+  LDFLAGS += $(TARGET_ARCH) -L$(BINDIR) -L$(LIBDIR) -L/usr/X11R6/lib/ -L/usr/local/include -lGL -lX11 -lXext -lXinerama -lasound -ldl -lfreetype -lpthread -lrt -pg -ldl -lXext -lGLU -rdynamic -fPIC -fvisibility=hidden
   LDDEPS :=
   RESFLAGS :=  -D "LINUX=1" -D "DEBUG=1" -D "_DEBUG=1" -D "JUCER_LINUX_MAKE_7346DA2A=1" -D "JUCE_APP_VERSION=0.3.5" -D "JUCE_APP_VERSION_HEX=0x305" -I /usr/include -I /usr/include/freetype2 -I ../../JuceLibraryCode -I ../../JuceLibraryCode/modules
   TARGET := open-ephys
@@ -40,9 +40,9 @@ ifeq ($(CONFIG),Release)
   endif
 
   CPPFLAGS := $(DEPFLAGS) -D "LINUX=1" -D "NDEBUG=1" -D "JUCER_LINUX_MAKE_7346DA2A=1" -D "JUCE_APP_VERSION=0.3.5" -D "JUCE_APP_VERSION_HEX=0x305" -I /usr/include -I /usr/include/freetype2 -I ../../JuceLibraryCode -I ../../JuceLibraryCode/modules
-  CFLAGS += $(CPPFLAGS) $(TARGET_ARCH) -O3 -rdynamic -g -pg -std=c++0x
+  CFLAGS += $(CPPFLAGS) $(TARGET_ARCH) -O3 -rdynamic -g -pg -std=c++0x -fvisibility=hidden
   CXXFLAGS += $(CFLAGS)
-  LDFLAGS += $(TARGET_ARCH) -L$(BINDIR) -L$(LIBDIR) -fvisibility=hidden -L/usr/X11R6/lib/ -lGL -lX11 -lXext -lXinerama -lasound -ldl -lfreetype -lpthread -lrt -pg -ldl -lXext -lGLU -rdynamic -fPIC
+  LDFLAGS += $(TARGET_ARCH) -L$(BINDIR) -L$(LIBDIR) -fvisibility=hidden -L/usr/X11R6/lib/ -lGL -lX11 -lXext -lXinerama -lasound -ldl -lfreetype -lpthread -lrt -pg -ldl -lXext -lGLU -rdynamic -fPIC -fvisibility=hidden
   LDDEPS :=
   RESFLAGS :=  -D "LINUX=1" -D "NDEBUG=1" -D "JUCER_LINUX_MAKE_7346DA2A=1" -D "JUCE_APP_VERSION=0.3.5" -D "JUCE_APP_VERSION_HEX=0x305" -I /usr/include -I /usr/include/freetype2 -I ../../JuceLibraryCode -I ../../JuceLibraryCode/modules
   TARGET := open-ephys-release