FindLibRHash: Add module to find the librhash package

Add it to a private source directory that is not installed so that we
can use it for building CMake itself.  This will allow it to mature
before being distributed publicly.

1 files changed, 73 insertions, 0 deletions

diff --git a/Source/Modules/FindLibRHash.cmake b/Source/Modules/FindLibRHash.cmake
new file mode 100644
index 0000000..86c6189
--- /dev/null
+++ b/Source/Modules/FindLibRHash.cmake
@@ -0,0 +1,73 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#[=======================================================================[.rst:
+FindLibRHash
+------------
+
+Find LibRHash include directory and library.
+
+Imported Targets
+^^^^^^^^^^^^^^^^
+
+An :ref:`imported target <Imported targets>` named
+``LibRHash::LibRHash`` is provided if LibRHash has been found.
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This module defines the following variables:
+
+``LibRHash_FOUND``
+  True if LibRHash was found, false otherwise.
+``LibRHash_INCLUDE_DIRS``
+  Include directories needed to include LibRHash headers.
+``LibRHash_LIBRARIES``
+  Libraries needed to link to LibRHash.
+
+Cache Variables
+^^^^^^^^^^^^^^^
+
+This module uses the following cache variables:
+
+``LibRHash_LIBRARY``
+  The location of the LibRHash library file.
+``LibRHash_INCLUDE_DIR``
+  The location of the LibRHash include directory containing ``rhash.h``.
+
+The cache variables should not be used by project code.
+They may be set by end users to point at LibRHash components.
+#]=======================================================================]
+
+#-----------------------------------------------------------------------------
+find_library(LibRHash_LIBRARY
+  NAMES rhash
+  )
+mark_as_advanced(LibRHash_LIBRARY)
+
+find_path(LibRHash_INCLUDE_DIR
+  NAMES rhash.h
+  )
+mark_as_advanced(LibRHash_INCLUDE_DIR)
+
+#-----------------------------------------------------------------------------
+include(${CMAKE_CURRENT_LIST_DIR}/../../Modules/FindPackageHandleStandardArgs.cmake)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibRHash
+  FOUND_VAR LibRHash_FOUND
+  REQUIRED_VARS LibRHash_LIBRARY LibRHash_INCLUDE_DIR
+  )
+set(LIBRHASH_FOUND ${LibRHash_FOUND})
+
+#-----------------------------------------------------------------------------
+# Provide documented result variables and targets.
+if(LibRHash_FOUND)
+  set(LibRHash_INCLUDE_DIRS ${LibRHash_INCLUDE_DIR})
+  set(LibRHash_LIBRARIES ${LibRHash_LIBRARY})
+  if(NOT TARGET LibRHash::LibRHash)
+    add_library(LibRHash::LibRHash UNKNOWN IMPORTED)
+    set_target_properties(LibRHash::LibRHash PROPERTIES
+      IMPORTED_LOCATION "${LibRHash_LIBRARY}"
+      INTERFACE_INCLUDE_DIRECTORIES "${LibRHash_INCLUDE_DIRS}"
+      )
+  endif()
+endif()