diff --git a/libgo/Makefile.am b/libgo/Makefile.am
index b6beb1e2fb3..05fa5db8509 100644
--- a/libgo/Makefile.am
+++ b/libgo/Makefile.am
@@ -2608,7 +2608,7 @@ testing/script/check: $(CHECK_DEPS)
 
 sysinfo.go: s-sysinfo; @true
 s-sysinfo: $(srcdir)/mksysinfo.sh config.h
-	CC="$(CC)" $(SHELL) $(srcdir)/mksysinfo.sh
+	CC="$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS)" $(SHELL) $(srcdir)/mksysinfo.sh
 	$(SHELL) $(srcdir)/../move-if-change tmp-sysinfo.go sysinfo.go
 	$(STAMP) $@
 
diff --git a/libgo/Makefile.in b/libgo/Makefile.in
index 729c6e2c723..e0e12a63db1 100644
--- a/libgo/Makefile.in
+++ b/libgo/Makefile.in
@@ -4992,7 +4992,7 @@ testing/script/check: $(CHECK_DEPS)
 
 sysinfo.go: s-sysinfo; @true
 s-sysinfo: $(srcdir)/mksysinfo.sh config.h
-	CC="$(CC)" $(SHELL) $(srcdir)/mksysinfo.sh
+	CC="$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS)" $(SHELL) $(srcdir)/mksysinfo.sh
 	$(SHELL) $(srcdir)/../move-if-change tmp-sysinfo.go sysinfo.go
 	$(STAMP) $@