--- gcc/config/mips/osfrose.h	2018/04/24 18:10:25	1.1
+++ gcc/config/mips/osfrose.h	2018/04/24 18:15:33	1.1.1.2
@@ -29,7 +29,9 @@ the Free Software Foundation, 675 Mass A
 #define WORD_SWITCH_TAKES_ARG(STR)					\
  (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) || !strcmp (STR, "pic-names"))
 
-#define CPP_PREDEFINES "-DOSF -DOSF1 -Dbsd4_2 -DMIPSEL -Dhost_mips -Dmips -Dunix -DR3000 -DSYSTYPE_BSD"
+#define CPP_PREDEFINES "\
+-DOSF -DOSF1 -Dbsd4_2 -DMIPSEL -Dhost_mips -Dmips -Dunix -DR3000 -DSYSTYPE_BSD \
+-Asystem(unix) -Asystem(xpg4) -Acpu(mips) -Amachine(mips)"
 
 #define ASM_SPEC	"\
 %{mmips-as: \
@@ -67,11 +69,14 @@ the Free Software Foundation, 675 Mass A
 %{.S:	%{!ansi:%{!traditional:%{!traditional-cpp:%{!ftraditional: -traditional}}}}} \
 %{.S:	-D__LANGUAGE_ASSEMBLY__ -D__LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY} \
 	-ULANGUAGE_C -U__LANGUAGE_C__} \
+%{.s:	%{!ansi:%{!traditional:%{!traditional-cpp:%{!ftraditional: -traditional}}}}} \
+%{.s:	-D__LANGUAGE_ASSEMBLY__ -D__LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY} \
+	-ULANGUAGE_C -U__LANGUAGE_C__} \
 %{.cc:	-D__LANGUAGE_C_PLUS_PLUS__ -D__LANGUAGE_C_PLUS_PLUS} \
 %{.cxx:	-D__LANGUAGE_C_PLUS_PLUS__ -D__LANGUAGE_C_PLUS_PLUS} \
 %{.C:	-D__LANGUAGE_C_PLUS_PLUS__ -D__LANGUAGE_C_PLUS_PLUS} \
 %{.m:	-D__LANGUAGE_OBJECTIVE_C__ -D__LANGUAGE_OBJECTIVE_C} \
-%{!.S:	-D__LANGUAGE_C__  -D__LANGUAGE_C %{!ansi:-DLANGUAGE_C}}"
+%{!.S:%{!.s:	-D__LANGUAGE_C__  -D__LANGUAGE_C %{!ansi:-DLANGUAGE_C}}}"
 
 #define LINK_SPEC "\
 %{G*} \