cmake: Add finder for uthash

cmake/Modules/FindUthash.cmake

@@ -0,0 +1,84 @@
+#[=======================================================================[.rst
+FindUthash
+----------
+
+FindModule for uthash and the associated library
+
+Imported Targets
+^^^^^^^^^^^^^^^^
+
+.. versionadded:: 3.0
+
+This module defines the :prop_tgt:`IMPORTED` target ``Uthash::Uthash``.
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This module sets the following variables:
+
+``Uthash_FOUND``
+  True, if the library was found.
+``Uthash_VERSION``
+  Detected version of found uthash library.
+
+Cache variables
+^^^^^^^^^^^^^^^
+
+The following cache variables may also be set:
+
+``Uthash_INCLUDE_DIR``
+  Directory containing ``uthash.h``.
+
+#]=======================================================================]
+
+# cmake-format: off
+# cmake-lint: disable=C0103
+# cmake-lint: disable=C0301
+# cmake-format: on
+
+include(FindPackageHandleStandardArgs)
+
+find_path(
+  Uthash_INCLUDE_DIR
+  NAMES uthash.h
+  PATHS /usr/include /usr/local/include
+  DOC "uthash include directory")
+
+if(EXISTS "${Uthash_INCLUDE_DIR}/uthash.h")
+  file(STRINGS "${Uthash_INCLUDE_DIR}/uthash.h" _version_string
+       REGEX "#define[ \t]+UTHASH_VERSION[ \t]+[0-9]+\\.[0-9]+\\.[0-9]+")
+
+  string(REGEX REPLACE "#define[ \t]+UTHASH_VERSION[ \t]+([0-9]+\\.[0-9]+\\.[0-9]+)" "\\1" Uthash_VERSION
+                       "${_version_string}")
+else()
+  if(NOT Uthash_FIND_QUIETLY)
+    message(AUTHOR_WARNING "Failed to find uthash version.")
+  endif()
+  set(Uthash_VERSION 0.0.0)
+endif()
+
+if(CMAKE_HOST_SYSTEM_NAME MATCHES "Darwin|Windows")
+  set(Uthash_ERROR_REASON "Ensure that obs-deps is provided as part of CMAKE_PREFIX_PATH.")
+elseif(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|FreeBSD")
+  set(Uthash_ERROR_REASON "Ensure uthash library is available in local include paths.")
+endif()
+
+find_package_handle_standard_args(
+  Uthash
+  REQUIRED_VARS Uthash_INCLUDE_DIR
+  VERSION_VAR Uthash_VERSION REASON_FAILURE_MESSAGE "${Uthash_ERROR_REASON}")
+mark_as_advanced(Uthash_INCLUDE_DIR)
+unset(Uthash_ERROR_REASON)
+
+if(Uthash_FOUND)
+  if(NOT TARGET Uthash::Uthash)
+    add_library(Uthash::Uthash INTERFACE IMPORTED)
+    set_target_properties(Uthash::Uthash PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${Uthash_INCLUDE_DIR}")
+  endif()
+endif()
+
+include(FeatureSummary)
+set_package_properties(
+  Uthash PROPERTIES
+  URL "https://troydhanson.github.io/uthash"
+  DESCRIPTION "A hash table for C structures")

cmake/finders/FindUthash.cmake

@@ -0,0 +1,84 @@
+#[=======================================================================[.rst
+FindUthash
+----------
+
+FindModule for uthash and the associated library
+
+Imported Targets
+^^^^^^^^^^^^^^^^
+
+.. versionadded:: 3.0
+
+This module defines the :prop_tgt:`IMPORTED` target ``Uthash::Uthash``.
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This module sets the following variables:
+
+``Uthash_FOUND``
+  True, if the library was found.
+``Uthash_VERSION``
+  Detected version of found uthash library.
+
+Cache variables
+^^^^^^^^^^^^^^^
+
+The following cache variables may also be set:
+
+``Uthash_INCLUDE_DIR``
+  Directory containing ``uthash.h``.
+
+#]=======================================================================]
+
+# cmake-format: off
+# cmake-lint: disable=C0103
+# cmake-lint: disable=C0301
+# cmake-format: on
+
+include(FindPackageHandleStandardArgs)
+
+find_path(
+  Uthash_INCLUDE_DIR
+  NAMES uthash.h
+  PATHS /usr/include /usr/local/include
+  DOC "uthash include directory")
+
+if(EXISTS "${Uthash_INCLUDE_DIR}/uthash.h")
+  file(STRINGS "${Uthash_INCLUDE_DIR}/uthash.h" _version_string
+       REGEX "#define[ \t]+UTHASH_VERSION[ \t]+[0-9]+\\.[0-9]+\\.[0-9]+")
+
+  string(REGEX REPLACE "#define[ \t]+UTHASH_VERSION[ \t]+([0-9]+\\.[0-9]+\\.[0-9]+)" "\\1" Uthash_VERSION
+                       "${_version_string}")
+else()
+  if(NOT Uthash_FIND_QUIETLY)
+    message(AUTHOR_WARNING "Failed to find uthash version.")
+  endif()
+  set(Uthash_VERSION 0.0.0)
+endif()
+
+if(CMAKE_HOST_SYSTEM_NAME MATCHES "Darwin|Windows")
+  set(Uthash_ERROR_REASON "Ensure that obs-deps is provided as part of CMAKE_PREFIX_PATH.")
+elseif(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|FreeBSD")
+  set(Uthash_ERROR_REASON "Ensure uthash library is available in local include paths.")
+endif()
+
+find_package_handle_standard_args(
+  Uthash
+  REQUIRED_VARS Uthash_INCLUDE_DIR
+  VERSION_VAR Uthash_VERSION REASON_FAILURE_MESSAGE "${Uthash_ERROR_REASON}")
+mark_as_advanced(Uthash_INCLUDE_DIR)
+unset(Uthash_ERROR_REASON)
+
+if(Uthash_FOUND)
+  if(NOT TARGET Uthash::Uthash)
+    add_library(Uthash::Uthash INTERFACE IMPORTED)
+    set_target_properties(Uthash::Uthash PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${Uthash_INCLUDE_DIR}")
+  endif()
+endif()
+
+include(FeatureSummary)
+set_package_properties(
+  Uthash PROPERTIES
+  URL "https://troydhanson.github.io/uthash"
+  DESCRIPTION "A hash table for C structures")