diff options
Diffstat (limited to 'Help/manual/cmake-buildsystem.7.rst')
| -rw-r--r-- | Help/manual/cmake-buildsystem.7.rst | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/Help/manual/cmake-buildsystem.7.rst b/Help/manual/cmake-buildsystem.7.rst index 6eea191..cd27316 100644 --- a/Help/manual/cmake-buildsystem.7.rst +++ b/Help/manual/cmake-buildsystem.7.rst @@ -922,8 +922,8 @@ property from it: Interface Libraries ------------------- -An ``INTERFACE`` target has no :prop_tgt:`LOCATION` and is mutable, but is -otherwise similar to an :prop_tgt:`IMPORTED` target. +An ``INTERFACE`` library target does not compile sources and does not +produce a library artifact on disk, so it has no :prop_tgt:`LOCATION`. It may specify usage requirements such as :prop_tgt:`INTERFACE_INCLUDE_DIRECTORIES`, @@ -937,11 +937,22 @@ Only the ``INTERFACE`` modes of the :command:`target_include_directories`, :command:`target_sources`, and :command:`target_link_libraries` commands may be used with ``INTERFACE`` libraries. +Since CMake 3.19, an ``INTERFACE`` library target may optionally contain +source files. An interface library that contains source files will be +included as a build target in the generated buildsystem. It does not +compile sources, but may contain custom commands to generate other sources. +Additionally, IDEs will show the source files as part of the target for +interactive reading and editing. + A primary use-case for ``INTERFACE`` libraries is header-only libraries. .. code-block:: cmake - add_library(Eigen INTERFACE) + add_library(Eigen INTERFACE + src/eigen.h + src/vector.h + src/matrix.h + ) target_include_directories(Eigen INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src> $<INSTALL_INTERFACE:include/Eigen> @@ -980,7 +991,12 @@ to must be installed separately: .. code-block:: cmake - add_library(Eigen INTERFACE) + set(Eigen_headers + src/eigen.h + src/vector.h + src/matrix.h + ) + add_library(Eigen INTERFACE ${Eigen_headers}) target_include_directories(Eigen INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src> $<INSTALL_INTERFACE:include/Eigen> @@ -990,9 +1006,6 @@ to must be installed separately: install(EXPORT eigenExport NAMESPACE Upstream:: DESTINATION lib/cmake/Eigen ) - install(FILES - ${CMAKE_CURRENT_SOURCE_DIR}/src/eigen.h - ${CMAKE_CURRENT_SOURCE_DIR}/src/vector.h - ${CMAKE_CURRENT_SOURCE_DIR}/src/matrix.h + install(FILES ${Eigen_headers} DESTINATION include/Eigen ) |