Added dependency for nrnivmodl-core and nmodl (#530)

* Added dependency for nrnivmodl-core and nmodl
   - Added dependency of nmodl if needed when configuring nrnivmodl-core
   - Added dependency of nrnivmodl-core in coreneuron target to make sure
      all the components of coreneuron are built before other external
      targets depend on it
* Added comments with explanations

Author: iomaganaris

coreneuron/CMakeLists.txt

@@ -168,8 +168,8 @@ add_library(
   coreneuron ${COMPILE_LIBRARY_TYPE} ${CORENEURON_HEADER_FILES} ${CORENEURON_TEMPLATE_FILES}
              ${CORENEURON_CODE_FILES} ${cudacorenrn_objs} ${NMODL_INBUILT_MOD_OUTPUTS})
 
-# need to have _kinderiv.h for mod2c generated files
-add_dependencies(coreneuron kin_deriv_header)
+# need to have _kinderiv.h for mod2c generated files and nrnivmodl-core and nmodl building
+add_dependencies(coreneuron kin_deriv_header nrnivmodl-core)
 
 # scopmath is created separately for nrnivmodl-core workflow
 add_library(scopmath STATIC ${CORENEURON_HEADER_FILES} ${SCOPMATH_CODE_FILES})

extra/CMakeLists.txt

@@ -10,6 +10,13 @@
 configure_file(nrnivmodl_core_makefile.in
                ${CMAKE_BINARY_DIR}/share/coreneuron/nrnivmodl_core_makefile @ONLY)
 configure_file(nrnivmodl-core.in ${CMAKE_BINARY_DIR}/bin/nrnivmodl-core @ONLY)
+# nrnivmodl-core depends on the building of NMODL_TARGET_TO_DEPEND and the configuration of the
+# nrnivmodl-core and nrnivmodl_core_makefile this doesn't imply that whenever there is a change in
+# one of those files then the prebuilt mod files are going to be rebuilt
+add_custom_target(
+  nrnivmodl-core ALL
+  DEPENDS ${CMAKE_BINARY_DIR}/bin/nrnivmodl-core
+          ${CMAKE_BINARY_DIR}/share/coreneuron/nrnivmodl_core_makefile ${NMODL_TARGET_TO_DEPEND})
 
 # =============================================================================
 # Install for end users