MDEV-6895 switch to dynamic libjemalloc.so

cmake/build_configurations/mysql_release.cmake

@@ -111,8 +111,6 @@ IF(UNIX)
   SET(WITH_EXTRA_CHARSETS all CACHE STRING "")
 
   IF(CMAKE_SYSTEM_NAME STREQUAL "Linux")
-    SET(WITH_JEMALLOC "static" CACHE STRING "")
-
     IF(NOT IGNORE_AIO_CHECK)
       # Ensure aio is available on Linux (required by InnoDB)
       CHECK_INCLUDE_FILES(libaio.h HAVE_LIBAIO_H)

cmake/jemalloc.cmake

 INCLUDE (CheckLibraryExists)
 
 SET(WITH_JEMALLOC auto CACHE STRING
-  "Build with jemalloc. Possible values are 'yes', 'no', 'auto'")
+  "Build with jemalloc. Possible values are 'yes', 'no', 'static', 'auto'")
+
+MACRO(JEMALLOC_TRY_STATIC)
+  SET(libname jemalloc_pic)
+  SET(CMAKE_REQUIRED_LIBRARIES pthread dl m)
+  SET(what bundled)
+  CHECK_LIBRARY_EXISTS(${libname} malloc_stats_print "" HAVE_STATIC_JEMALLOC)
+  SET(CMAKE_REQUIRED_LIBRARIES)
+ENDMACRO()
+
+MACRO(JEMALLOC_TRY_DYNAMIC)
+  SET(libname jemalloc)
+  SET(what system)
+  CHECK_LIBRARY_EXISTS(${libname} malloc_stats_print "" HAVE_DYNAMIC_JEMALLOC)
+ENDMACRO()
 
 MACRO (CHECK_JEMALLOC)
   # compatibility with old WITH_JEMALLOC values
@@ -12,22 +26,17 @@ MACRO (CHECK_JEMALLOC)
     SET(WITH_JEMALLOC "yes")
   ENDIF()
 
-  IF(WITH_JEMALLOC STREQUAL "yes" OR WITH_JEMALLOC STREQUAL "auto" OR
-      WITH_JEMALLOC STREQUAL "static")
-
-    IF(WITH_JEMALLOC STREQUAL "static")
-      SET(libname jemalloc_pic)
-      SET(CMAKE_REQUIRED_LIBRARIES pthread dl m)
-      SET(what bundled)
-    ELSE()
-      SET(libname jemalloc)
-      SET(what system)
-    ENDIF()
+  IF (WITH_JEMALLOC STREQUAL "yes" OR WITH_JEMALLOC STREQUAL "auto")
+    JEMALLOC_TRY_DYNAMIC()
+  ENDIF()
 
-    CHECK_LIBRARY_EXISTS(${libname} malloc_stats_print "" HAVE_JEMALLOC)
-    SET(CMAKE_REQUIRED_LIBRARIES)
+  IF (WITH_JEMALLOC STREQUAL "static" OR WITH_JEMALLOC STREQUAL "auto"
+      AND NOT HAVE_DYNAMIC_JEMALLOC)
+    JEMALLOC_TRY_STATIC()
+  ENDIF()
 
-    IF (HAVE_JEMALLOC)
+  IF (libname)
+    IF (HAVE_DYNAMIC_JEMALLOC OR HAVE_STATIC_JEMALLOC)
       SET(LIBJEMALLOC ${libname})
       SET(MALLOC_LIBRARY "${what} jemalloc")
     ELSEIF (NOT WITH_JEMALLOC STREQUAL "auto")