Cleanup HAVE_MMAP_ALIGNED: one cmake check less

cmake/os/FreeBSD.cmake

@@ -32,7 +32,3 @@ FIND_LIBRARY(EXECINFO NAMES execinfo)
 IF(EXECINFO)
  SET(LIBEXECINFO ${EXECINFO})
 ENDIF()
-
-INCLUDE(CheckSymbolExists)
-
-CHECK_SYMBOL_EXISTS(MAP_ALIGNED "sys/mman.h" HAVE_MMAP_ALIGNED)

config.h.cmake

@@ -183,7 +183,6 @@
 #cmakedefine HAVE_MLOCKALL 1
 #cmakedefine HAVE_MMAP 1
 #cmakedefine HAVE_MMAP64 1
-#cmakedefine HAVE_MMAP_ALIGNED 1
 #cmakedefine HAVE_PERROR 1
 #cmakedefine HAVE_POLL 1
 #cmakedefine HAVE_POSIX_FALLOCATE 1

include/my_sys.h

@@ -183,7 +183,7 @@ extern size_t my_next_large_page_size(size_t sz, int *start);
 #endif
 
 #if defined(_WIN32) || (defined(HAVE_MMAP) && !defined(__linux__) \
-                        && !defined(HAVE_MMAP_ALIGNED))
+                        && !defined(MAP_ALIGNED))
 extern void my_get_large_page_size(void);
 #else
 #define my_get_large_page_size() do {} while(0)

mysys/my_largepage.c

@@ -23,7 +23,7 @@
 #include <linux/mman.h>
 #include <dirent.h>
 #endif
-#if defined(__linux__) || defined(HAVE_MMAP_ALIGNED)
+#if defined(__linux__) || defined(MAP_ALIGNED)
 #include "my_bit.h"
 #endif
 
@@ -267,7 +267,7 @@ static void my_get_large_page_sizes(size_t sizes[my_large_page_sizes_length])
 
 /* Multisized (Linux/FreeBSD) large pages allocator  */
 
-#if defined(__linux__) || defined(HAVE_MMAP_ALIGNED)
+#if defined(__linux__) || defined(MAP_ALIGNED)
 uchar* my_large_malloc_int(size_t *size, myf my_flags)
 {
   uchar* ptr;
@@ -343,7 +343,7 @@ uchar* my_large_malloc_int(size_t *size, myf my_flags)
   DBUG_RETURN(ptr);
 }
 
-#endif /* defined(__linux__) || defined(HAVE_MMAP_ALIGNED) */
+#endif /* defined(__linux__) || defined(MAP_ALIGNED) */
 
 #if defined(HAVE_GETPAGESIZES) && !defined(__linux__)
 static void my_get_large_page_sizes(size_t sizes[my_large_page_sizes_length])
@@ -383,7 +383,7 @@ my_bool my_large_free_int(void *ptr, size_t size)
 }
 #endif /* HAVE_MMAP */
 
-#if defined(HAVE_MMAP) && !defined(__linux__) && !defined(HAVE_MMAP_ALIGNED) \
+#if defined(HAVE_MMAP) && !defined(__linux__) && !defined(MAP_ALIGNED) \
     && !defined(_WIN32)
 
 /* Solaris for example has only MAP_ANON, FreeBSD has MAP_ANONYMOUS and