The gcc in svn issues errors when variables are non-const and declared
in progmem. This caused avr-libc to fail to build but it was very easy
to fix, I attached a patch.
Sean
Index: include/avr/pgmspace.h
===================================================================
RCS file: /sources/avr-libc/avr-libc/include/avr/pgmspace.h,v
retrieving revision 1.45
diff -u -r1.45 pgmspace.h
--- include/avr/pgmspace.h 15 Nov 2009 06:30:23 -0000 1.45
+++ include/avr/pgmspace.h 25 Nov 2011 05:49:51 -0000
@@ -246,7 +246,7 @@
# define PSTR(s) ((const PROGMEM char *)(s))
#else /* !DOXYGEN */
/* The real thing. */
-# define PSTR(s) (__extension__({static char __c[] PROGMEM = (s); &__c[0];}))
+# define PSTR(s) (__extension__({static const char __c[] PROGMEM = (s); &__c[0];}))
#endif /* DOXYGEN */
#define __LPM_classic__(addr) \
Index: libc/stdlib/dtostre.c
===================================================================
RCS file: /sources/avr-libc/avr-libc/libc/stdlib/dtostre.c,v
retrieving revision 1.3
diff -u -r1.3 dtostre.c
--- libc/stdlib/dtostre.c 1 Apr 2009 23:10:59 -0000 1.3
+++ libc/stdlib/dtostre.c 25 Nov 2011 05:49:52 -0000
@@ -37,19 +37,20 @@
char *
dtostre (double val, char *sbeg, unsigned char prec, unsigned char flags)
{
- __attribute__((progmem)) static char str_nan[2][4] =
+ __attribute__((progmem)) static const char str_nan[2][4] =
{"nan", "NAN"};
- __attribute__((progmem)) static char str_inf[2][sizeof(str_nan[0])] =
+ __attribute__((progmem)) static const char str_inf[2][sizeof(str_nan[0])] =
{"inf", "INF"};
char *d; /* dst */
- char *s; /* src */
+ const char *s; /* src */
signed char exp;
unsigned char vtype;
if (prec > 7) prec = 7;
exp = __ftoa_engine (val, sbeg, prec, 0);
- d = s = sbeg;
+ s = sbeg;
+ d = (char*)s;
vtype = *s++;
if ((vtype & FTOA_MINUS) && !(vtype & FTOA_NAN)) /* like 'Glibc' */
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