Bug #58699 cannot build with gcc dbg on solaris

cmake/os/SunOS.cmake:
  Remove TARGET_OS_SOLARIS
config.h.cmake:
  Remove TARGET_OS_SOLARIS
  Add PTHREAD_ONCE_INITIALIZER
configure.cmake:
  Add function for testing whether we need { PTHREAD_ONCE_INIT } rather than PTHREAD_ONCE_INIT
include/my_pthread.h:
  Use PTHREAD_ONCE_INITIALIZER if set by cmake.
include/mysql/psi/mysql_file.h:
  Include my_global.h first, to get correct platform definitions.
mysys/ptr_cmp.c:
  Hide the unused static functions in #ifdef's on solaris.
  Use __sun (defined by both gcc and SunPro cc) rather than TARGET_OS_SOLARIS
sql/my_decimal.cc:
  Include my_global.h first, to get correct platform definitions.
sql/mysqld.cc:
  Fix signed/unsigned comparison warning.
sql/sql_audit.h:
  Include my_global.h first, to get correct platform definitions.
sql/sql_plugin.h:
  Include my_global.h first, to get correct platform definitions.
sql/sql_show.cc:
  Fix: warning: cast from pointer to integer of different size
sql/sys_vars.h:
  Use reinterpret_cast rather than c-style cast.
storage/perfschema/pfs_instr.cc:
  Include my_global.h first, to get correct platform definitions.

1 files changed, 13 insertions, 6 deletions

diff --git a/mysys/ptr_cmp.c b/mysys/ptr_cmp.c
index 2005e3eb2b7..dcafe13291d 100644
--- a/mysys/ptr_cmp.c
+++ b/mysys/ptr_cmp.c
@@ -22,7 +22,7 @@
 #include "mysys_priv.h"
 #include <myisampack.h>
 
-#ifdef TARGET_OS_SOLARIS
+#ifdef __sun
 /*
  * On Solaris, memcmp() is normally faster than the unrolled ptr_compare_N
  * functions, as memcmp() is usually a platform-specific implementation
@@ -39,22 +39,25 @@ static int native_compare(size_t *length, unsigned char **a, unsigned char **b)
   return memcmp(*a, *b, *length);
 }
 
-#else	/* TARGET_OS_SOLARIS */
+#else	/* __sun */
 
 static int ptr_compare(size_t *compare_length, uchar **a, uchar **b);
 static int ptr_compare_0(size_t *compare_length, uchar **a, uchar **b);
 static int ptr_compare_1(size_t *compare_length, uchar **a, uchar **b);
 static int ptr_compare_2(size_t *compare_length, uchar **a, uchar **b);
 static int ptr_compare_3(size_t *compare_length, uchar **a, uchar **b);
-#endif	/* TARGET_OS_SOLARIS */
+#endif	/* __sun */
 
 	/* Get a pointer to a optimal byte-compare function for a given size */
 
-qsort2_cmp get_ptr_compare (size_t size)
+#ifdef __sun
+qsort2_cmp get_ptr_compare (size_t size __attribute__((unused)))
 {
-#ifdef TARGET_OS_SOLARIS
   return (qsort2_cmp) native_compare;
+}
 #else
+qsort2_cmp get_ptr_compare (size_t size)
+{
   if (size < 4)
     return (qsort2_cmp) ptr_compare;
   switch (size & 3) {
@@ -64,8 +67,8 @@ qsort2_cmp get_ptr_compare (size_t size)
     case 3: return (qsort2_cmp) ptr_compare_3;
     }
   return 0;					/* Impossible */
-#endif /* TARGET_OS_SOLARIS */
 }
+#endif /* __sun */
 
 
 	/*
@@ -75,6 +78,8 @@ qsort2_cmp get_ptr_compare (size_t size)
 
 #define cmp(N) if (first[N] != last[N]) return (int) first[N] - (int) last[N]
 
+#ifndef __sun
+
 static int ptr_compare(size_t *compare_length, uchar **a, uchar **b)
 {
   reg3 int length= *compare_length;
@@ -177,6 +182,8 @@ static int ptr_compare_3(size_t *compare_length,uchar **a, uchar **b)
   return (0);
 }
 
+#endif /* !__sun */
+
 void my_store_ptr(uchar *buff, size_t pack_length, my_off_t pos)
 {
   switch (pack_length) {