Move -fPIC to OPTIM.

Author: michaelrsweet

configure

@@ -5618,8 +5618,8 @@ _ACEOF
 if ac_fn_c_try_compile "$LINENO"
 then :
 
-	    OLDCFLAGS="-fPIC $OLDCFLAGS"
 	    LDFLAGS="-fPIE -Wl,-pie $LDFLAGS"
+	    OPTIM="-fPIC $OPTIM"
 	    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
 
@@ -5648,8 +5648,8 @@ _ACEOF
 if ac_fn_c_try_compile "$LINENO"
 then :
 
-	    OLDCFLAGS="-fPIC $OLDCFLAGS"
 	    LDFLAGS="-fPIE -pie $LDFLAGS"
+	    OPTIM="-fPIC $OPTIM"
 	    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
 

configure.ac

@@ -640,17 +640,17 @@ AC_ARG_WITH([ldflags], AS_HELP_STRING([--with-ldflags=...], [Specify additional
     AS_CASE(["$host_os_name"], [darwin*], [
 	CFLAGS="$CFLAGS -fPIC -fPIE -Wl,-pie"
 	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[
-	    OLDCFLAGS="-fPIC $OLDCFLAGS"
 	    LDFLAGS="-fPIE -Wl,-pie $LDFLAGS"
+	    OPTIM="-fPIC $OPTIM"
 	    AC_MSG_RESULT([yes])
 	],[
 	    AC_MSG_RESULT([no])
 	])
     ], [*], [
 	CFLAGS="$CFLAGS -fPIC -fPIE -pie"
 	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[
-	    OLDCFLAGS="-fPIC $OLDCFLAGS"
 	    LDFLAGS="-fPIE -pie $LDFLAGS"
+	    OPTIM="-fPIC $OPTIM"
 	    AC_MSG_RESULT([yes])
 	],[
 	    AC_MSG_RESULT([no])