Apply naming convention for CMake options (!69)

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## What is the new feature
_Please describe your feature in a couple of words._
## How is it implemented
_Describe important implementation details of the feature._

## Mandatory steps before review
- [ ] Gitlab CI passes _(Hint: use `make format` for linting)_ 
- [x] New feature is covered by additional unit tests
- [x] Mark the merge request as ready by removing `Draft:`

## Mandatory steps before merge
- [x] Test coverage does not decrease
- [x] Reviewed by a maintainer
- [x] Incorporate review suggestions
- [ ] Remember to edit the commit message and select the proper changelog category (feature/bugfix/other)

**You are not supposed to merge this request by yourself, the maintainers of fortan-support take care of this action!**

Approved-by: Pradipta Samanta <samanta@dkrz.de>
Merged-by: Yen-Chen Chen <yen-chen.chen@kit.edu>
Changelog: feature

.gitlab-ci.yml

@@ -92,7 +92,7 @@ OpenACC:
     - module load gcc/11.2.0-gcc-11.2.0 nvhpc/22.5-gcc-11.2.0
     - mkdir nvhpc
     - cd nvhpc
-    - /sw/spack-levante/cmake-3.23.1-q5kzz6/bin/cmake .. -DBUILD_OPENACC=ON  -DCMAKE_C_COMPILER=nvc -DCMAKE_Fortran_COMPILER=nvfortran -DCMAKE_CXX_COMPILER=nvc++
+    - /sw/spack-levante/cmake-3.23.1-q5kzz6/bin/cmake .. -DFS_ENABLE_OPENACC=ON  -DCMAKE_C_COMPILER=nvc -DCMAKE_Fortran_COMPILER=nvfortran -DCMAKE_CXX_COMPILER=nvc++
     - make VERBOSE=1
   tags:
     - levante-fake, hpc, dkrz
@@ -152,7 +152,7 @@ Code Coverage:
   script:
     - mkdir build
     - cd build
-    - cmake .. -DBACKTRACE_TEST=OFF -DCMAKE_C_COMPILER=gcc -DCMAKE_Fortran_COMPILER=gfortran -DCMAKE_CXX_COMPILER=g++ -DCMAKE_C_FLAGS="--coverage" -DCMAKE_Fortran_FLAGS="--coverage"
+    - cmake .. -DFS_ENABLE_BACKTRACE_TEST=OFF -DCMAKE_C_COMPILER=gcc -DCMAKE_Fortran_COMPILER=gfortran -DCMAKE_CXX_COMPILER=g++ -DCMAKE_C_FLAGS="--coverage" -DCMAKE_Fortran_FLAGS="--coverage"
     - make
     - ctest --output-on-failure
     - gcovr --xml-pretty --exclude-unreachable-branches --gcov-ignore-errors=no_working_dir_found --print-summary src -o coverage.xml --root ${CI_PROJECT_DIR}

CMakeLists.txt

@@ -17,10 +17,11 @@ find_package(OpenACC QUIET)
 
 option(BUILD_SHARED_LIBS "Build shared libraries" ON)
 option(BUILD_TESTING "Build tests" ON)
-option(BACKTRACE_TEST "Test backtrace function" ON)
-option(BUILD_OMP "Build with OpenMP support" OFF)
-option(BUILD_OPENACC "Build with OpenACC support" OFF)
-option(MIXED_PRECISION "Use mixed precision" OFF)
+
+option(FS_ENABLE_BACKTRACE_TEST "Test backtrace function" ON)
+option(FS_ENABLE_OMP "Build with OpenMP support" OFF)
+option(FS_ENABLE_OPENACC "Build with OpenACC support" OFF)
+option(FS_ENABLE_MIXED_PRECISION "Use mixed precision" OFF)
 
 if(NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE "RelWithDebInfo" CACHE STRING

README.md

@@ -100,7 +100,7 @@ mkdir build
 cd build
 cmake ..
 ! Or the following for GPU support with OpenACC
-cmake -DBUILD_OPENACC=ON ..
+cmake -DFS_ENABLE_OPENACC=ON ..
 make
 ```
 4. Format the code by `make format`.

src/CMakeLists.txt

@@ -19,7 +19,7 @@ configure_file(
   ${CMAKE_CURRENT_SOURCE_DIR}/config.h.in
   ${CMAKE_CURRENT_BINARY_DIR}/config.h)
 
-if (BUILD_OPENACC)
+if (FS_ENABLE_OPENACC)
   message(VERBOSE "Compiler id is ${CMAKE_Fortran_COMPILER_ID}")
   if (CMAKE_Fortran_COMPILER_ID STREQUAL "Cray")
     set(OpenACC_FLAGS "-hacc")
@@ -29,7 +29,7 @@ if (BUILD_OPENACC)
   set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} ${OpenACC_FLAGS}")
 endif ()
 
-if (BUILD_OMP)
+if (FS_ENABLE_OMP)
   find_package(OpenMP QUIET)
   set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} ${OpenMP_Fortran_FLAGS}")
 endif ()
@@ -85,7 +85,7 @@ set_target_properties(fortran-support
     EXPORT_NAME ${PROJECT_NAME}::fortran-support
 )
 
-if (MIXED_PRECISION)
+if (FS_ENABLE_MIXED_PRECISION)
   target_compile_definitions(fortran-support PRIVATE __MIXED_PRECISION)
 endif ()
 

test/c/CMakeLists.txt

@@ -40,7 +40,7 @@ endif()
 
 include("${PROJECT_SOURCE_DIR}/cmake/gtest_helper.cmake")
 
-if (BACKTRACE_TEST)
+if (FS_ENABLE_BACKTRACE_TEST)
   add_icon_c_test(UtilBacktraceTest ctest_util_backtrace.cpp)
 endif()