Install KWSys Copyright.txt as documentation

This commit adds KWSys configuration option KWSYS_INSTALL_DOC_DIR to
specify the directory for installation of documentation.  We use it to
put the KWSys Copyright.txt file at the location

  ${KWSYS_INSTALL_DOC_DIR}/${KWSYS_NAMESPACE}/Copyright.txt

in the project installation tree.  This helps containing projects meet
the license requirement to distribute the copyright and license with
binary forms.

1 files changed, 18 insertions, 0 deletions

diff --git a/Source/kwsys/CMakeLists.txt b/Source/kwsys/CMakeLists.txt
index 34df847..475abe6 100644
--- a/Source/kwsys/CMakeLists.txt
+++ b/Source/kwsys/CMakeLists.txt
@@ -55,6 +55,8 @@
 #  KWSYS_INSTALL_INCLUDE_DIR   kwsys should be installed by a "make install".
 #                              The values should be specified relative to
 #                              the installation prefix and NOT start with '/'.
+#  KWSYS_INSTALL_DOC_DIR     = The installation target directory for documentation
+#                              such as copyright information.
 #
 #  KWSYS_INSTALL_COMPONENT_NAME_RUNTIME     = Name of runtime and development
 #  KWSYS_INSTALL_COMPONENT_NAME_DEVELOPMENT   installation components.
@@ -574,6 +576,22 @@ SET(KWSYS_HEADER_DIR "${KWSYS_HEADER_ROOT}/${KWSYS_NAMESPACE}")
 INCLUDE_DIRECTORIES(${KWSYS_HEADER_ROOT})
 
 #-----------------------------------------------------------------------------
+IF(KWSYS_INSTALL_DOC_DIR)
+  # Assign the license to the runtime component since it must be
+  # distributed with binary forms of this software.
+  IF(KWSYS_INSTALL_COMPONENT_NAME_RUNTIME)
+    SET(KWSYS_INSTALL_LICENSE_OPTIONS ${KWSYS_INSTALL_LICENSE_OPTIONS}
+      COMPONENT ${KWSYS_INSTALL_COMPONENT_NAME_RUNTIME}
+      )
+  ENDIF(KWSYS_INSTALL_COMPONENT_NAME_RUNTIME)
+
+  # Install the license under the documentation directory.
+  INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/Copyright.txt
+    DESTINATION ${KWSYS_INSTALL_DOC_DIR}/${KWSYS_NAMESPACE}
+    ${KWSYS_INSTALL_LICENSE_OPTIONS})
+ENDIF(KWSYS_INSTALL_DOC_DIR)
+
+#-----------------------------------------------------------------------------
 # Create STL header wrappers to block warnings in the STL headers and
 # give standard names by which they may be included.
 SET(KWSYS_STL_HEADER_EXTRA_string 1)