Revert "Improve LibFMT detection"

This reverts commit 9feaa6be.

No, we do NOT support fmt 6.x, it formats values differently.
And we MUST use FMT_HEADER_ONLY

.gitignore

@@ -618,4 +618,3 @@ tests/mariadb-client-test
 versioninfo_dll.rc
 versioninfo_exe.rc
 win/packaging/ca/symlinks.cc
-/_Deparsed_XSubs.pm

cmake/libfmt.cmake

+INCLUDE (CheckCXXSourceCompiles)
+INCLUDE (ExternalProject)
 
 SET(WITH_LIBFMT "auto" CACHE STRING
    "Which libfmt to use (possible values are 'bundled', 'system', or 'auto')")
@@ -10,7 +12,6 @@ MACRO(BUNDLE_LIBFMT)
     SET(fmt_byproducts BUILD_BYPRODUCTS ${LIBFMT_INCLUDE_DIR}/fmt/format-inl.h)
   ENDIF()
 
-  INCLUDE (ExternalProject)
   ExternalProject_Add(
     libfmt
     PREFIX   "${dir}"
@@ -25,42 +26,17 @@ ENDMACRO()
 
 MACRO (CHECK_LIBFMT)
   IF(WITH_LIBFMT STREQUAL "system" OR WITH_LIBFMT STREQUAL "auto")
-    FIND_PACKAGE(fmt)
-    IF(fmt_FOUND)
-      set(HAVE_SYSTEM_LIBFMT ${fmt_FOUND})
-    ENDIF()
-
-    FIND_LIBRARY(FMT_LIB_FOUND fmt)
-    IF(FMT_LIB_FOUND)
-      set(FMT_LIBRARIES fmt CACHE STRING "LibFormat libraries" FORCE)
-      ADD_DEFINITIONS(-DLINK_SYSTEM_LIBFMT)
-    ELSE(FMT_LIB_FOUND)
-      set(FMT_HEADER_ONLY "#define FMT_HEADER_ONLY 1")
-      set(FMT_LIBRARIES "" CACHE STRING "LibFormat libraries" FORCE)
-    ENDIF(FMT_LIB_FOUND)
-
-    INCLUDE (CheckCXXSourceCompiles)
     CHECK_CXX_SOURCE_COMPILES(
     "#define FMT_STATIC_THOUSANDS_SEPARATOR ','
-     ${FMT_HEADER_ONLY}
+     #define FMT_HEADER_ONLY 1
      #include <fmt/format-inl.h>
      #include <iostream>
-     #include <string>
-     #if FMT_VERSION < 70000
-     using namespace ::fmt::internal;
-     #else
-     using namespace ::fmt::detail;
-     #endif
      int main() {
        fmt::format_args::format_arg arg=
          fmt::detail::make_arg<fmt::format_context>(42);
          std::cout << fmt::vformat(\"The answer is {}.\",
                                    fmt::format_args(&arg, 1));
-       return 0;
      }" HAVE_SYSTEM_LIBFMT)
-     IF (HAVE_SYSTEM_LIBFMT)
-       ADD_DEFINITIONS(-DHAVE_SYSTEM_LIBFMT)
-     ENDIF()
   ENDIF()
   IF(NOT HAVE_SYSTEM_LIBFMT OR WITH_LIBFMT STREQUAL "bundled")
     IF (WITH_LIBFMT STREQUAL "system")

sql/CMakeLists.txt

@@ -208,7 +208,6 @@ MAYBE_DISABLE_IPO(sql)
 DTRACE_INSTRUMENT(sql)
 TARGET_LINK_LIBRARIES(sql PUBLIC
   mysys mysys_ssl dbug strings vio pcre2-8
-  ${FMT_LIBRARIES}
   tpool
   ${LIBWRAP} ${LIBCRYPT} ${CMAKE_DL_LIBS} ${CMAKE_THREAD_LIBS_INIT}
   ${SSL_LIBRARIES}
@@ -278,7 +277,7 @@ IF(MSVC OR CMAKE_SYSTEM_NAME MATCHES AIX)
 ENDIF()
 
 ADD_LIBRARY(sql_builtins STATIC ${CMAKE_CURRENT_BINARY_DIR}/sql_builtin.cc)
-TARGET_LINK_LIBRARIES(sql_builtins PUBLIC ${MYSQLD_STATIC_PLUGIN_LIBS})
+TARGET_LINK_LIBRARIES(sql_builtins ${MYSQLD_STATIC_PLUGIN_LIBS})
 
 MYSQL_ADD_EXECUTABLE(mariadbd ${MYSQLD_SOURCE} DESTINATION ${INSTALL_SBINDIR} COMPONENT Server)
 

sql/item_strfunc.cc

@@ -57,18 +57,8 @@ C_MODE_END
 
 /* fmtlib include (https://fmt.dev/). */
 #define FMT_STATIC_THOUSANDS_SEPARATOR ','
-#if !defined(HAVE_SYSTEM_LIBFMT) && !defined(LINK_SYSTEM_LIBFMT)
 #define FMT_HEADER_ONLY 1
-#endif
-
-#include <fmt/format-inl.h>
-
-#if FMT_VERSION < 70000
-using namespace ::fmt::internal;
-#else
-using namespace ::fmt::detail;
-#endif
-
+#include "fmt/format-inl.h"
 
 size_t username_char_length= USERNAME_CHAR_LENGTH;
 
@@ -1403,14 +1393,14 @@ String *Item_func_sformat::val_str(String *res)
     switch (args[carg]->result_type())
     {
     case INT_RESULT:
-      vargs[carg-1]= make_arg<ctx>(args[carg]->val_int());
+      vargs[carg-1]= fmt::detail::make_arg<ctx>(args[carg]->val_int());
       break;
     case DECIMAL_RESULT: // TODO
     case REAL_RESULT:
       if (args[carg]->field_type() == MYSQL_TYPE_FLOAT)
-        vargs[carg-1]= make_arg<ctx>((float)args[carg]->val_real());
+        vargs[carg-1]= fmt::detail::make_arg<ctx>((float)args[carg]->val_real());
       else
-        vargs[carg-1]= make_arg<ctx>(args[carg]->val_real());
+        vargs[carg-1]= fmt::detail::make_arg<ctx>(args[carg]->val_real());
       break;
     case STRING_RESULT:
       if (!(parg= args[carg]->val_str(&val_arg[carg-1])))
@@ -1418,7 +1408,7 @@ String *Item_func_sformat::val_str(String *res)
         delete [] vargs;
         return NULL;
       }
-      vargs[carg-1]= make_arg<ctx>(*parg);
+      vargs[carg-1]= fmt::detail::make_arg<ctx>(*parg);
       break;
     case TIME_RESULT: // TODO
     case ROW_RESULT: // TODO