Properly set compilation flags for OBJECT targets

Previously, some of the custom GROMACS flags were not properly passed.

Mostly warnings, but also `-fexcess-precision=fast` and `-funroll-all-loops`.

As a consequence, missing warnings allowed it to go unnoticed that
`pulling` module was compiled without OpenMP. This omission is also
fixed here.

Refs #4747

docs/release-notes/2023/2023.1.rst

@@ -95,3 +95,10 @@ Now, bonded force calculation on GPU is expected to be up to 3 times faster.
 
 :issue:`3928`
 
+Restored OpenMP acceleration of pulling routines
+""""""""""""""""""""""""""""""""""""""""""""""""
+
+During internal code reorganization, OpenMP acceleration was accidentally disabled
+for pulling force calculation in |Gromacs| 2023. This is now fixed.
+
+:issue:`4747`

src/gromacs/options/CMakeLists.txt

@@ -47,6 +47,9 @@ add_library(options OBJECT
     treesupport.cpp
     )
 
+gmx_target_compile_options(options)
+target_compile_definitions(options PRIVATE HAVE_CONFIG_H)
+
 # Source files have the following private module dependencies.
 target_link_libraries(options PRIVATE
                 legacy_api

src/gromacs/pulling/CMakeLists.txt

@@ -44,6 +44,10 @@ if (BUILD_SHARED_LIBS)
     set_target_properties(pulling PROPERTIES POSITION_INDEPENDENT_CODE ON)
 endif()
 
+# Set required compile flags
+gmx_target_compile_options(pulling)
+target_compile_definitions(pulling PRIVATE HAVE_CONFIG_H)
+
 # Source files have the following dependencies on library infrastructure.
 target_link_libraries(pulling PRIVATE
                       common
@@ -68,6 +72,10 @@ target_link_libraries(pulling INTERFACE
                       legacy_api
                       )
 
+if (GMX_OPENMP)
+    target_link_libraries(pulling PRIVATE OpenMP::OpenMP_CXX)
+endif()
+
 # TODO: when pulling is an OBJECT target
 #target_link_libraries(pulling PUBLIC legacy_api)
 #target_link_libraries(pulling PRIVATE common)

src/gromacs/taskassignment/CMakeLists.txt

@@ -45,6 +45,9 @@ if (BUILD_SHARED_LIBS)
     set_target_properties(taskassignment PROPERTIES POSITION_INDEPENDENT_CODE ON)
 endif()
 
+gmx_target_compile_options(taskassignment)
+target_compile_definitions(taskassignment PRIVATE HAVE_CONFIG_H)
+
 # Note that this is a higher-level module that should not need
 # special compilation to suit e.g. GPU or MPI dependencies.
 # If you find you want to do that, consider a preliminary