vtk-m2/CMake/InstantiationTemplate.cxx.in

#ifndef @INSTANTIATION_INC_GUARD@
#define @INSTANTIATION_INC_GUARD@
#endif

#include <@INSTANTIATION_TEMPLATE_SOURCE@>

/* Needed for linking errors when no instantiations */
int @INSTANTIATION_INC_GUARD@@counter@__;

@INSTANTIATION_DECLARATION@

#undef @INSTANTIATION_INC_GUARD@
Add generalized instantiation Recently, an instantiation method was added to the VTK-m configuration files to set up a set of source files that compile instances of a template. This allows the template instances to be compiled exactly once in separate build files. However, the implementation made the assumption that the instantiations were happening for VTK-m filters. Now that the VTK-m filters are being redesigned, this assumption is broken. Thus, the instantiation code has been redesigned to be more general. It can now be applied to code within the new filter structure. It can also be applied anywhere else in the VTK-m source code. 2022-03-21 16:32:42 +00:00			`#ifndef @INSTANTIATION_INC_GUARD@`
			`#define @INSTANTIATION_INC_GUARD@`
			`#endif`

			`#include <@INSTANTIATION_TEMPLATE_SOURCE@>`

Add a unique symbol to InstantiationTemplate.cxx.in A compiler or linker may give an error if a .cxx file is empty (that is, declares no symbols). This can happen if an instantiation declaration gets removed during the compile either through preprocessor macros or SFINAE. To protect against this, declare a simple integer with a unique symbol in each instantiation file. The overhead is very small and will prevent compile/link errors. 2022-03-28 15:18:23 +00:00			`/* Needed for linking errors when no instantiations */`
			`int @INSTANTIATION_INC_GUARD@@counter@__;`

Add generalized instantiation Recently, an instantiation method was added to the VTK-m configuration files to set up a set of source files that compile instances of a template. This allows the template instances to be compiled exactly once in separate build files. However, the implementation made the assumption that the instantiations were happening for VTK-m filters. Now that the VTK-m filters are being redesigned, this assumption is broken. Thus, the instantiation code has been redesigned to be more general. It can now be applied to code within the new filter structure. It can also be applied anywhere else in the VTK-m source code. 2022-03-21 16:32:42 +00:00			`@INSTANTIATION_DECLARATION@`

			`#undef @INSTANTIATION_INC_GUARD@`