diff --git a/include/prereq-build.mk b/include/prereq-build.mk
index 7504d43a74..1384f27e82 100644
--- a/include/prereq-build.mk
+++ b/include/prereq-build.mk
@@ -38,9 +38,7 @@ $(eval $(call TestHostCommand,working-gcc, \
 	it appears to be broken, \
 	echo 'int main(int argc, char **argv) { return 0; }' | \
 		gcc -x c -o $(TMP_DIR)/a.out -))
-endif
 
-ifndef IB
 $(eval $(call SetupHostCommand,g++, \
 	Please install the GNU C++ Compiler (g++) 4.8 or later, \
 	$(CXX) -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?|10\.?)', \
@@ -53,14 +51,12 @@ $(eval $(call TestHostCommand,working-g++, \
 	echo 'int main(int argc, char **argv) { return 0; }' | \
 		g++ -x c++ -o $(TMP_DIR)/a.out - -lstdc++ && \
 		$(TMP_DIR)/a.out))
-endif
 
-ifndef IB
 $(eval $(call TestHostCommand,ncurses, \
 	Please install ncurses. (Missing libncurses.so or ncurses.h), \
 	echo 'int main(int argc, char **argv) { initscr(); return 0; }' | \
 		gcc -include ncurses.h -x c -o $(TMP_DIR)/a.out - -lncurses))
-endif
+endif # IB
 
 ifeq ($(HOST_OS),Linux)
   zlib_link_flags := -Wl,-Bstatic -lz -Wl,-Bdynamic