# This patch is to ensure the installation of the Fortran modules.
# It appears necessary since 2.47.0.
# See https://github.com/ecmwf/eccodes/issues/467
--- fortran/CMakeLists.txt.orig   2026-04-22 18:01:11.000000000 +0200
+++ fortran/CMakeLists.txt        2026-04-23 12:40:58.664244087 +0200
@@ -109,7 +109,7 @@ if( HAVE_FORTRAN )
     # Install the contents of the fortran module directory
     if(ECBUILD_INSTALL_FORTRAN_MODULES)
         install( CODE  "execute_process(
-                            COMMAND ${CMAKE_COMMAND} -D MOD_DESTINATION=\${CMAKE_INSTALL_PREFIX}/${INSTALL_INCLUDE_DIR}
+                            COMMAND ${CMAKE_COMMAND} -D MOD_DESTINATION=\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/${INSTALL_INCLUDE_DIR}
                                                      -P ${CMAKE_CURRENT_BINARY_DIR}/eccodes_f90_copy_mod.cmake )" )
     endif()