fix firefox build

package/firefox/Makefile

@@ -42,12 +42,12 @@ endif
 
 CONFIGURE_ENV+=		CROSS_COMPILE=1 \
 			PYTHON="$(PYTHON)" \
-			HOST_CC="${CC_FOR_BUILD}" \
-			HOST_CPPFLAGS="${CPPFLAGS_FOR_BUILD}" \
-			HOST_CFLAGS="${CFLAGS_FOR_BUILD}" \
-			HOST_LDFLAGS="${LDLAGS_FOR_BUILD}" \
-			HOST_CXX="${CXX_FOR_BUILD}" \
-			HOST_CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
+			HOST_CC="${HOST_CC}" \
+			HOST_CPPFLAGS="${HOST_CPPFLAGS}" \
+			HOST_CFLAGS="${HOST_CFLAGS}" \
+			HOST_LDFLAGS="${HOST_LDLAGS}" \
+			HOST_CXX="${HOST_CXX}" \
+			HOST_CXXFLAGS="${HOST_CXXFLAGS}" \
 			HOST_RANLIB="ranlib" HOST_AR="ar" \
 			CPPFLAGS="-I${STAGING_TARGET_DIR}/usr/include/freetype2" \
 			ac_cv_sqlite_secure_delete=yes \
@@ -108,7 +108,7 @@ ifeq ($(ADK_TARGET_SYSTEM_LEMOTE_YEELONG),y)
 TARGET_CFLAGS:=		$(subst Os,g3,$(TARGET_CFLAGS))
 endif
 
-XAKE_FLAGS+=		OS_RELEASE="2.6" HOST_CC=$(CC_FOR_BUILD) HOST_LDFLAGS=$(LDFLAGS_FOR_BUILD)
+XAKE_FLAGS+=		OS_RELEASE="2.6" HOST_CC=$(HOST_CC) HOST_LDFLAGS=$(HOST_LDFLAGS)
 XAKE_FLAGS+=            ARCHFLAG="${TARGET_CFLAGS} ${TARGET_CPPFLAGS} ${TARGET_LDFLAGS} -lnss3 -lnssutil3 -lsmime3 -lssl3 -fPIC"
 
 pre-build: