Now writes a Makefile for users to build a source

CMakeLists.txt

@@ -406,6 +406,58 @@ install(FILES man/man1/openmc.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)
 install(FILES LICENSE DESTINATION "${CMAKE_INSTALL_DOCDIR}" RENAME copyright)
 install(DIRECTORY include/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 
-# Copy headers for vendored dependencies (note that all except faddeeva are handled
-# separately since they are managed by CMake)
-install(DIRECTORY vendor/faddeeva DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+#=============================
+# write the dl_open Makefile
+#=============================
+file(WRITE share/Makefile"
+# Makefile to build dynamic sources for OpenMC
+# this assumes that your source sampling filename is
+# source_sampling.cpp 
+#
+# you can add fortran, c and cpp dependencies to this source
+# adding them in FC_DEPS, C_DEPS, and CXX_DEPS accordingly
+
+ifeq ($(FC), f77)
+FC = gfortran 
+endif 
+
+default: all 
+
+ALL = source_sampling
+# add your fortran depencies here
+FC_DEPS =
+# add your c dependencies here
+C_DEPS = 
+# add your cpp dependencies here 
+CPP_DEPS =
+DEPS = $(FC_DEPS) $(C_DEPS) $(CPP_DEPS)
+OPT_LEVEL = -O3
+FFLAGS = $(OPT_LEVEL) -fPIC
+C_FLAGS = -fPIC
+CXX_FLAGS = -fPIC
+
+OPENMC_DIR = ${CMAKE_INSTALL_PREFIX}
+OPENMC_INC_DIR = $(OPENMC_DIR)/include
+OPENMC_LIB_DIR = $(OPENMC_DIR)/lib
+# setting the so name is important
+LINK_FLAGS = $(OPT_LEVEL) -Wall -Wl,-soname,source_sampling.so 
+# setting shared is important
+LINK_FLAGS += -L$(OPENMC_LIB_DIR) -lopenmc -lgfortran -fPIC -shared
+OPENMC_INCLUDES = -I$(OPENMC_INC_DIR) -I$(OPENMC_DIR)/vendor/pugixml
+
+all: $(ALL) 
+
+source_sampling: $(DEPS)
+	$(CXX) source_sampling.cpp $(DEPS) $(OPENMC_INCLUDES) $(LINK_FLAGS) -o $@.so 
+# make any fortran objects
+%.o : %.F90 
+	$(FC) -c $(FFLAGS) $*.F90 -o $@
+# make any c objects
+%.o : %.c
+	$(CC) -c $(FFLAGS) $*.c -o $@
+#make any cpp objects
+%.o : %.cpp
+	$(CXX) -c $(FFLAGS) $*.cpp -o $@
+clean: 
+	rm -rf *.o *.mod
+")