gnu.h (CPP_SPEC): Define __PIC__ and __pic__ if -fPIC or -fpic is specified.

X
        * config/i386/gnu.h (CPP_SPEC): Define __PIC__ and __pic__ if
        -fPIC or -fpic is specified.

From-SVN: r27868

gcc/config/i386/gnu.h

@@ -14,7 +14,9 @@
   -Dunix -Asystem(unix) -Asystem(posix) -D__GNU__ -Asystem(gnu)"
 
 #undef CPP_SPEC
-#define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} %{bsd:-D_BSD_SOURCE}"
+#define CPP_SPEC "%(cpp_cpu) \
+  %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} \
+  %{posix:-D_POSIX_SOURCE} %{bsd:-D_BSD_SOURCE}"
 
 #undef CC1_SPEC
 #define CC1_SPEC "%(cc1_cpu)"