Pass the '-f' option (ARM only) to 5l to generate VFP hardware floating point instructions.

Reference: /n/sources/patch/applied/pcc-vfp
Date: Fri Jan 11 20:56:52 CET 2013
Signed-off-by: miller@hamnavoe.com

--- /sys/src/cmd/pcc.c	Fri Jan 11 20:56:13 2013
+++ /sys/src/cmd/pcc.c	Fri Jan 11 20:56:11 2013
@@ -111,6 +111,10 @@
 		case 'p':
 			append(&ldargs, "-p");
 			break;
+		case 'f':
+			if(strcmp(ot->ld, "5l") == 0)
+				append(&ldargs, "-f");
+			break;
 		case 'a':
 			/* hacky look inside ARGBEGIN insides, to see if we have -aa */
 			if(*_args == 'a') {
--- /sys/man/1/pcc	Fri Jan 11 20:56:18 2013
+++ /sys/man/1/pcc	Fri Jan 11 20:56:16 2013
@@ -137,6 +137,9 @@
 This is of limited use without the appropriate 
 .B #pragma 
 definitions.
+.TP
+.B -f
+(ARM only) Generate VFP hardware floating point instructions.
 .PP
 The APE environment contains all of the include
 files and library routines specified in the ANSI C standard