From: Sébastien Fabbro <bicatali@gentoo.org>
Subject: add missing DESTDIR to respect sandbox install

--- grib_api-1.14.5-Source.orig/fortran/CMakeLists.txt	2016-03-14 22:53:44.310678929 +0000
+++ grib_api-1.14.5-Source/fortran/CMakeLists.txt	2016-03-14 22:55:42.479193350 +0000
@@ -55,11 +55,11 @@
     install( CODE
 "
 if( EXISTS ${CMAKE_Fortran_MODULE_DIRECTORY}/${CMAKE_CFG_INTDIR}/GRIB_API.mod )
-  execute_process( COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_Fortran_MODULE_DIRECTORY}/${CMAKE_CFG_INTDIR}/GRIB_API.mod ${CMAKE_INSTALL_PREFIX}/${INSTALL_INCLUDE_DIR}/grib_api.mod )
+  execute_process( COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_Fortran_MODULE_DIRECTORY}/${CMAKE_CFG_INTDIR}/GRIB_API.mod \$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/${INSTALL_INCLUDE_DIR}/grib_api.mod )
 endif()
 
 if( EXISTS ${CMAKE_Fortran_MODULE_DIRECTORY}/${CMAKE_CFG_INTDIR}/grib_api.mod )
-  execute_process( COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_Fortran_MODULE_DIRECTORY}/${CMAKE_CFG_INTDIR}/grib_api.mod ${CMAKE_INSTALL_PREFIX}/${INSTALL_INCLUDE_DIR}/GRIB_API.mod )
+  execute_process( COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_Fortran_MODULE_DIRECTORY}/${CMAKE_CFG_INTDIR}/grib_api.mod \$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/${INSTALL_INCLUDE_DIR}/GRIB_API.mod )
 endif()
 " )