perldelta for 1ef28cc363ae

[perl5.git] / config_h.SH

diff --git a/config_h.SH b/config_h.SH
index f26ed2f..e776983 100755 (executable)
--- a/config_h.SH
+++ b/config_h.SH
@@ -3011,6 +3011,9 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  *     This symbol, if defined, indicates that the memmem routine is
  *     available to return a pointer to the start of the first occurance
  *     of a substring in a memory area (or NULL if not found).
+ *     In glibc, memmem is a GNU extension.  The function is visible in
+ *     libc, but the prototype is only visible if _GNU_SOURCE is #defined.
+ *     Thus we only define this if both the prototype and symbol are found.
  */
 #$d_memmem HAS_MEMMEM          /**/
 
@@ -3501,13 +3504,13 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 
 /* HAS_TOWLOWER:
  *     This symbol, if defined, indicates that the towlower () routine is
- *     available to do string concatenation.
+ *     available to do case conversion.
  */
 #$d_towlower HAS_TOWLOWER              /**/
 
 /* HAS_TOWUPPER:
  *     This symbol, if defined, indicates that the towupper () routine is
- *     available to do string concatenation.
+ *     available to do case conversion.
  */
 #$d_towupper HAS_TOWUPPER              /**/
 
@@ -4228,11 +4231,11 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$use64bitall  USE_64_BIT_ALL          /**/
 #endif
 
-/* USE_CBACKTRACE:
+/* USE_C_BACKTRACE:
  *     This symbol, if defined, indicates that Perl should
  *     be built with support for backtrace.
  */
-#$usecbacktrace USE_CBACKTRACE         /**/
+#$usecbacktrace USE_C_BACKTRACE                /**/
 
 /* USE_DTRACE:
  *     This symbol, if defined, indicates that Perl should