ctest failure in test_ecbuild_override_compiler_flags for cray compiler

[DJDavies2]

What happened?

Building and running with Cray compiler gives this failure:

CMake Warning at /home/users/david.davies/cylc-run/mo-bundle-414/work/1/build_ecbuild__exab_cray/src/cmake/ecbuild_log.cmake:162 (message):
�[33mWARN - COMPILE_FLAGS points to non-existent file compiler_flags.cmake
and will be ignored�[m
Call Stack (most recent call first):
/home/users/david.davies/cylc-run/mo-bundle-414/work/1/build_ecbuild__exab_cray/src/cmake/ecbuild_compiler_flags.cmake:197 (ecbuild_warn)
CMakeLists.txt:7 (ecbuild_override_compiler_flags)

-- �[34mDEBUG - ecbuild_evaluate_dynamic_condition(_overrideflags_condition): checking condition '' -> TRUE�[m
-- �[34mDEBUG - ecbuild_find_perl: found perl version 5.26.1 as /usr/bin/perl�[m
-- �[34mDEBUG - ecbuild_add_persistent: adding persistent layer for []�[m
-- �[34mDEBUG - ecbuild_target_flags(overrideflags): setting flags for 'emptyfile.F90' to '-fPIC -h PIC '�[m
-- �[34mDEBUG - ecbuild_add_library(overrideflags): installing to lib64�[m
-fPIC -h PIC
CMake Error at CMakeLists.txt:43 (message):
Incorrect flags for emptyfile.F90

What are the steps to reproduce the bug?

Build and run with Cray compiler

Version

3.13.1

Platform (OS and architecture)

Linux

Relevant log output

Accompanying data

No response

Organisation

Met Office

[DJDavies2]

And in develop as well.

[wdeconinck]

Hi @DJDavies2 could I have some more information on which Cray compiler version and CMake version this error occurs with?

[DJDavies2]

Compiler version:

-- The C compiler identification is CrayClang 15.0.0
-- The CXX compiler identification is CrayClang 15.0.0
-- The Fortran compiler identification is Cray 15.0.0

cmake version is 4.0.3.

[wdeconinck]

I could not reproduce this issue with cce/16.0.1 and cmake {4.3.0 , 3.28}

-- The C compiler identification is CrayClang 16.0.1
-- The Fortran compiler identification is Cray 16.0.1
-- Cray Programming Environment 2.7.34

The reproducer:

#CMakeLists.txt
cmake_minimum_required(VERSION 3.18 FATAL_ERROR)

find_package(ecbuild HINTS ../ecbuild)
project(test LANGUAGES C Fortran VERSION 0.0.0)

ecbuild_add_library(TARGET f1 SOURCES lib.F90)
ecbuild_add_executable(TARGET main SOURCES main.F90 LIBS f1)
ecbuild_print_summary()

! lib.F90
subroutine f1
  write(0,*) "hello from f1"
end subroutine

! main.F90
program main
  call f1
end program

[wdeconinck]

Apoligies I did not the title read correctly. It is only about the test. I can reproduce it.

[wdeconinck]

I have created PR #137 that should fix the test instead of #136