Merge branch 'fix_651_bis' into 'master'

CMake: fix build with LLVM/Clang 17+

Closes #651

See merge request libtiff/libtiff!671

Author: rouault

cmake/LinkerChecks.cmake

@@ -39,7 +39,12 @@ VERS_2 {
 } VERS_1;
 ")
 set(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS})
-set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} "-Wl,--version-script=${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
+if (CMAKE_VERSION GREATER_EQUAL 3.29 AND CMAKE_C_COMPILER_LINKER_ID STREQUAL "LLD" AND CMAKE_C_COMPILER_LINKER_VERSION GREATER_EQUAL 17)
+    set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} -Wl,--undefined-version "-Wl,--version-script=${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
+else()
+    set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} "-Wl,--version-script=${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
+endif()
+
 check_c_source_compiles("int main(void){return 0;}" HAVE_LD_VERSION_SCRIPT)
 set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE})
 file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map")

libtiff/CMakeLists.txt

@@ -201,8 +201,13 @@ if(NOT CYGWIN)
     set_target_properties(tiff PROPERTIES VERSION ${SO_VERSION})
 endif()
 if(HAVE_LD_VERSION_SCRIPT)
-  set_target_properties(tiff PROPERTIES LINK_FLAGS
-                        "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/libtiff.map")
+  if (CMAKE_VERSION GREATER_EQUAL 3.29 AND CMAKE_C_COMPILER_LINKER_ID STREQUAL "LLD" AND CMAKE_C_COMPILER_LINKER_VERSION GREATER_EQUAL 17)
+    set_target_properties(tiff PROPERTIES LINK_FLAGS
+                              "-Wl,--undefined-version -Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/libtiff.map")
+  else()
+    set_target_properties(tiff PROPERTIES LINK_FLAGS
+                              "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/libtiff.map")
+  endif()
 endif()
 
 if(tiff-install)