Only use HOST_CC for INTERNAL_TOOLS when cross-compiling as it's the only time it actually matters. r,a=wtc

nsprpub/config/rules.mk

@@ -62,12 +62,14 @@ endif
 
 ifdef USE_AUTOCONF
 ifdef INTERNAL_TOOLS
+ifdef CROSS_COMPILE
 CC=$(HOST_CC)
 CCC=$(HOST_CXX)
 CFLAGS=$(HOST_CFLAGS)
 CXXFLAGS=$(HOST_CXXFLAGS)
 endif
 endif
+endif
 
 #
 # This makefile contains rules for building the following kinds of