diff --git a/graphics/opengl/dynamic_resolution/Makefile b/graphics/opengl/dynamic_resolution/Makefile
index 1f5e7a2..27712e2 100644
--- a/graphics/opengl/dynamic_resolution/Makefile
+++ b/graphics/opengl/dynamic_resolution/Makefile
@@ -54,10 +54,6 @@ CFLAGS	:=	-g -Wall -O2 -ffunction-sections \
 
 CFLAGS	+=	$(INCLUDE) -D__SWITCH__
 
-# The following line works around an issue in newlib that produces a compilation
-# error in glm. It will be removed as soon as this issue is resolved.
-CFLAGS	+=	-D_GLIBCXX_USE_C99_MATH_TR1 -D_LDBL_EQ_DBL
-
 CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions
 
 ASFLAGS	:=	-g $(ARCH)
diff --git a/graphics/opengl/lenny/Makefile b/graphics/opengl/lenny/Makefile
index 1f5e7a2..27712e2 100644
--- a/graphics/opengl/lenny/Makefile
+++ b/graphics/opengl/lenny/Makefile
@@ -54,10 +54,6 @@ CFLAGS	:=	-g -Wall -O2 -ffunction-sections \
 
 CFLAGS	+=	$(INCLUDE) -D__SWITCH__
 
-# The following line works around an issue in newlib that produces a compilation
-# error in glm. It will be removed as soon as this issue is resolved.
-CFLAGS	+=	-D_GLIBCXX_USE_C99_MATH_TR1 -D_LDBL_EQ_DBL
-
 CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions
 
 ASFLAGS	:=	-g $(ARCH)
diff --git a/graphics/opengl/textured_cube/Makefile b/graphics/opengl/textured_cube/Makefile
index 14fddf1..6f1aa7c 100644
--- a/graphics/opengl/textured_cube/Makefile
+++ b/graphics/opengl/textured_cube/Makefile
@@ -54,10 +54,6 @@ CFLAGS	:=	-g -Wall -O2 -ffunction-sections \
 
 CFLAGS	+=	$(INCLUDE) -D__SWITCH__
 
-# The following line works around an issue in newlib that produces a compilation
-# error in glm. It will be removed as soon as this issue is resolved.
-CFLAGS	+=	-D_GLIBCXX_USE_C99_MATH_TR1 -D_LDBL_EQ_DBL
-
 CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions
 
 ASFLAGS	:=	-g $(ARCH)