diff --git a/fxsdk/assets/Makefile b/fxsdk/assets/Makefile
index 83e5192..370dbbb 100755
--- a/fxsdk/assets/Makefile
+++ b/fxsdk/assets/Makefile
@@ -10,8 +10,8 @@
 include project.cfg
 
 # Compiler flags
-CFLAGSFX := $(CFLAGS) $(CFLAGS_FX) $(INCLUDE)
-CFLAGSCG := $(CFLAGS) $(CFLAGS_CG) $(INCLUDE)
+CFLAGSFX = $(CFLAGS) $(CFLAGS_FX) $(INCLUDE_FX)
+CFLAGSCG = $(CFLAGS) $(CFLAGS_CG) $(INCLUDE_CG)
 
 # Linker flags
 LDFLAGSFX := $(LDFLAGS) $(LDFLAGS_FX)
@@ -40,6 +40,12 @@ endif
 FXCONVFX := --fx --toolchain=$(TOOLCHAIN_FX)
 FXCONVCG := --cg --toolchain=$(TOOLCHAIN_CG)
 
+# Determine the compiler install and include path
+GCC_BASE_FX := $(shell $(TOOLCHAIN_FX)-gcc --print-search-dirs | grep install | sed 's/install: //')
+GCC_BASE_CG := $(shell $(TOOLCHAIN_CG)-gcc --print-search-dirs | grep install | sed 's/install: //')
+GCC_INCLUDE_FX := $(GCC_BASE_FX)/include
+GCC_INCLUDE_CG := $(GCC_BASE_CG)/include
+
 #
 #  File listings
 #
@@ -128,10 +134,10 @@ build-cg/%.s.o: %.s
 # Preprocessed assembler sources
 build-fx/%.S.o: %.S
 	@ mkdir -p $(dir $@)
-	$(TOOLCHAIN_FX)-gcc -c $< -o $@ $(INCLUDE)
+	$(TOOLCHAIN_FX)-gcc -c $< -o $@ $(INCLUDE_FX)
 build-cg/%.S.o: %.S
 	@ mkdir -p $(dir $@)
-	$(TOOLCHAIN_CG)-gcc -c $< -o $@ $(INCLUDE)
+	$(TOOLCHAIN_CG)-gcc -c $< -o $@ $(INCLUDE_CG)
 
 # Images
 build-fx/assets/img/%.o: assets-fx/img/%
diff --git a/fxsdk/fxsdk.sh b/fxsdk/fxsdk.sh
index 559adeb..d00c0f9 100755
--- a/fxsdk/fxsdk.sh
+++ b/fxsdk/fxsdk.sh
@@ -185,8 +185,11 @@ CFLAGS_CG := -D FXCG50  -m4-nofpu
 CFLAGS += -Wall -Wextra -Wno-missing-field-initializers -Os
 
 # Include paths. Add one -I option for each folder from which you want to
-# be able to include files with #include<>.
-INCLUDE := -I include
+# be able to include files with #include<>. The Makefile provides a variable
+# GCC_INCLUDE_FX/GCC_INCLUDE_CG that represents the default include folder,
+# which is useful for some libraries such as OpenLibm.
+INCLUDE_FX = -I include
+INCLUDE_CG = -I include
 
 # Libraries. Add one -l option for each library you are using, and also
 # suitable -L options if you have library files in custom folders. To use