diff --git a/configure b/configure
index 57a04db1f8..ff442b5c9f 100755
--- a/configure
+++ b/configure
@@ -33873,18 +33873,26 @@ if ${wx_cv_elf_symver_multiple+:} false; then :
 else
 
                     echo "lib_new {}; lib_old { *; };" >conftest.sym
+                    ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
                     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 
                             #include "wx/private/elfversion.h"
-                            wxELF_SYMVER("foo","foo@lib_old")
-                            wxELF_SYMVER("foo","foo@@lib_new")
+                            extern "C" {
+                            wxELF_SYMVER("_foo","_foo@lib_old")
+                            wxELF_SYMVER("_foo","_foo@@lib_new")
                             void foo() {}
+                            }
                             int main() { return 0; }
 
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_cxx_try_link "$LINENO"; then :
   wx_cv_elf_symver_multiple=yes
 else
   wx_cv_elf_symver_multiple=no
@@ -33892,6 +33900,12 @@ else
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
+                    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
                     rm -f conftest.sym
 
 
@@ -33909,17 +33923,25 @@ if ${wx_cv_elf_symver+:} false; then :
 else
 
                         echo "lib_new {}; lib_old { *; };" >conftest.sym
+                        ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
                         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 
                                 #include "wx/private/elfversion.h"
-                                wxELF_SYMVER("foo","foo@@lib_new")
+                                extern "C" {
+                                wxELF_SYMVER("_foo","_foo@@lib_new")
                                 void foo() {}
+                                }
                                 int main() { return 0; }
 
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
+if ac_fn_cxx_try_link "$LINENO"; then :
   wx_cv_elf_symver=yes
 else
   wx_cv_elf_symver=no
@@ -33927,6 +33949,12 @@ else
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
+                        ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
                         rm -f conftest.sym
 
 
diff --git a/configure.in b/configure.in
index 610a440a0c..9e119382a8 100644
--- a/configure.in
+++ b/configure.in
@@ -4025,17 +4025,21 @@ if test "$wxUSE_SHARED" = "yes"; then
                 wx_cv_elf_symver_multiple,
                 [
                     echo "lib_new {}; lib_old { *; };" >conftest.sym
+                    AC_LANG_PUSH(C++)
                     AC_LINK_IFELSE([
                         AC_LANG_SOURCE([
                             #include "wx/private/elfversion.h"
-                            wxELF_SYMVER("foo","foo@lib_old")
-                            wxELF_SYMVER("foo","foo@@lib_new")
+                            extern "C" {
+                            wxELF_SYMVER("_foo","_foo@lib_old")
+                            wxELF_SYMVER("_foo","_foo@@lib_new")
                             void foo() {}
+                            }
                             int main() { return 0; }
                         ])],
                         wx_cv_elf_symver_multiple=yes,
                         wx_cv_elf_symver_multiple=no
                     )
+                    AC_LANG_POP()
                     rm -f conftest.sym
                 ]
             )
@@ -4047,16 +4051,20 @@ if test "$wxUSE_SHARED" = "yes"; then
                     wx_cv_elf_symver,
                     [
                         echo "lib_new {}; lib_old { *; };" >conftest.sym
+                        AC_LANG_PUSH(C++)
                         AC_LINK_IFELSE([
                             AC_LANG_SOURCE([
                                 #include "wx/private/elfversion.h"
-                                wxELF_SYMVER("foo","foo@@lib_new")
+                                extern "C" {
+                                wxELF_SYMVER("_foo","_foo@@lib_new")
                                 void foo() {}
+                                }
                                 int main() { return 0; }
                             ])],
                             wx_cv_elf_symver=yes,
                             wx_cv_elf_symver=no
                         )
+                        AC_LANG_POP()
                         rm -f conftest.sym
                     ]
                 )
diff --git a/docs/changes.txt b/docs/changes.txt
index efa569222b..f76a70f491 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -255,6 +255,7 @@ Changes in behaviour which may result in build errors
 All (Unix):
 
 - Fix configure build with --with-flavour option broken in 3.2.8 (#25436).
+- Fix configure build with clang and LTO broken in 3.2.8 (#25438).
 
 wxGTK: