#
# This file is part of the GROMACS molecular simulation package.
#
# Copyright (c) 2020, by the GROMACS development team, led by
# Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
# and including many others, as listed in the AUTHORS file in the
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# The legacy installed API consists of headers that are not considered
# to be maintainable in terms of a stable API specification. These headers
# will no longer be available to install in a future release.

# Note: Any usage requirements that should be transitive should be added to
# this INTERFACE target. Compiler and linker options (that do not need to
# be propagated when linking to the `common` target) can be added directly
# to the `common` target.
add_library(legacy_api INTERFACE)
target_include_directories(legacy_api INTERFACE
                           $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
                           $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>
                           $<INSTALL_INTERFACE:include>)

configure_file(version.h.cmakein include/gromacs/version.h)

# Allow an export target for legacy_api since it is a dependency of the
# installable libgromacs target.
install(TARGETS legacy_api
        EXPORT libgromacs
        INCLUDES DESTINATION include)

if(GMX_INSTALL_LEGACY_API)
    # Install public header directories.
    install(DIRECTORY include/gromacs
            DESTINATION include)

    # Install "configured" files from the build tree.
    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/include/gromacs/version.h
            DESTINATION include/gromacs)
endif()