include/common.h: fix build against current uClibc

Commit dbe0fd17f2 (mtd-utils: new prompt() helper for talking to the user)
introduced a rpmatch() call. However, uClibc versions older than (not yet
released) 0.9.34 don't have rpmatch() implementation. Add one.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/include/common.h b/include/common.h
index 4ffccea1721336e59123623e4abbf2a98a88dac9..3b1366e927c4df2ed4b9ece9403aca2db3fd94df 100644 (file)
--- a/include/common.h
+++ b/include/common.h
@@ -102,6 +102,19 @@ extern "C" {
        fprintf(stderr, "%s: warning!: " fmt "\n", PROGRAM_NAME, ##__VA_ARGS__); \
 } while(0)
 
+#if defined(__UCLIBC__)
+/* uClibc versions before 0.9.34 don't have rpmatch() */
+#if __UCLIBC_MAJOR__ == 0 && \
+               (__UCLIBC_MINOR__ < 9 || \
+               (__UCLIBC_MINOR__ == 9 && __UCLIBC_SUBLEVEL__ < 34))
+static inline int rpmatch(const char *resp)
+{
+    return (resp[0] == 'y' || resp[0] == 'Y') ? 1 :
+       (resp[0] == 'n' || resp[0] == 'N') ? 0 : -1;
+}
+#endif
+#endif
+
 /**
  * prompt the user for confirmation
  */