Merge pull request #2094 from DennisHeimbigner/longname2.dmh

Make Issue #2077 work when build is repeated.

Author: WardF

RELEASE_NOTES.md

@@ -7,6 +7,8 @@ This file contains a high-level description of this package's evolution. Release
 
 ## 4.8.2 - TBD
 
+* [Bug Fix] Make PR 2075 long file name be idempotent. See [Github #2094](https://github.com/Unidata/netcdf-c/pull/2094).
+
 ## 4.8.1 - August 18, 2021
 
 * [Bug Fix] Fix multiple bugs in libnczarr. See [Github #2066](https://github.com/Unidata/netcdf-c/pull/2066).

dap4_test/baselinethredds/CMakeLists.txt

@@ -12,7 +12,9 @@ FILE(COPY ${COPY_FILES} DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/ FILE_PERMISSION
 ##
 # Rename file in support of https://github.com/Unidata/netcdf-c/issues/2077
 ##
+IF(NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/GOES16_CONUS_20170821_020218_0.47_1km_33.3N_91.4W.nc4.thredds)
 FILE(RENAME ${CMAKE_CURRENT_BINARY_DIR}/GOES16_TEST1.nc4.thredds ${CMAKE_CURRENT_BINARY_DIR}/GOES16_CONUS_20170821_020218_0.47_1km_33.3N_91.4W.nc4.thredds)
+ENDIF()
 
 FILE(GLOB CUR_EXTRA_DIST RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/*)
 SET(CUR_EXTRA_DIST ${CUR_EXTRA_DIST} CMakeLists.txt)