255 organize odeint as stand alone library (#256)

+ fixing golden record tag fetch in case of CI pipeline shallow clone of repo

Author: GeorgGrassler

CMakeLists.txt

@@ -214,6 +214,7 @@ add_subdirectory(extra/MyMPILib)
 add_subdirectory(src/hdf5_tools)
 add_subdirectory(src/polylag)
 add_subdirectory(src/interpolate)
+add_subdirectory(src/odeint)
 add_subdirectory(src/field)
 add_subdirectory(src/collisions)
 add_subdirectory(src/transport)

CMakeSources.in

@@ -6,7 +6,6 @@ add_library(neo STATIC
     src/arnoldi.f90
     src/libneo_kinds.f90
     src/math_constants.f90
-    src/odeint_allroutines.f90
     src/poincare.f90
     src/rusage_type.f90
     src/system_utility.f90
@@ -48,6 +47,7 @@ target_link_libraries(neo PUBLIC
     interpolate
     hdf5_tools
     neo_field
+    odeint
 )
 
 target_link_libraries(neo PRIVATE

src/odeint/CMakeLists.txt

@@ -0,0 +1,15 @@
+add_library(odeint STATIC
+    odeint_allroutines.f90)
+
+if(ENABLE_OPENMP)
+    find_package(OpenMP COMPONENTS Fortran)
+    if(OpenMP_Fortran_FOUND)
+        target_link_libraries(odeint PUBLIC OpenMP::OpenMP_Fortran)
+    endif()
+endif()
+
+set_target_properties(odeint PROPERTIES
+      Fortran_MODULE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+target_include_directories(odeint PUBLIC
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
+add_library(LIBNEO::odeint ALIAS odeint)

src/odeint_allroutines.f90 src/odeint/odeint_allroutines.f90src/odeint_allroutines.f90 renamed to src/odeint/odeint_allroutines.f90

@@ -16,10 +16,13 @@ fi
 
 echo "Fetching golden record from latest tag..."
 
-# Get the latest tag
-LATEST_TAG=$(git tag --sort=-v:refname | head -1)
+# Get the latest tag from remote (works even on shallow clones)
+LATEST_TAG=$(git ls-remote --tags --sort=-v:refname origin | head -1 | sed 's|.*refs/tags/||')
 echo "Latest tag: $LATEST_TAG"
 
+# Fetch only that tagged commit (no-op if already available locally)
+git fetch origin tag "$LATEST_TAG" --no-tags
+
 # Fetch the old implementation
 echo "Fetching odeint_allroutines.f90 from $LATEST_TAG..."
 git show "$LATEST_TAG:src/odeint_allroutines.f90" > "$GOLDEN_FILE"