cmake: Add FindZSTD

1 files changed, 107 insertions, 0 deletions

diff --git a/cmake/FindZSTD.cmake b/cmake/FindZSTD.cmake
new file mode 100644
index 00000000..a4066300
--- /dev/null
+++ b/cmake/FindZSTD.cmake
@@ -0,0 +1,107 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#[=======================================================================[.rst:
+FindZSTD
+--------
+
+Find the native ZSTD includes and library.
+
+IMPORTED Targets
+^^^^^^^^^^^^^^^^
+
+This module defines :prop_tgt:`IMPORTED` target ``ZSTD::ZSTD``, if
+ZSTD has been found.
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This module defines the following variables:
+
+::
+
+  ZSTD_INCLUDE_DIRS   - where to find zstd.h, etc.
+  ZSTD_LIBRARIES      - List of libraries when using zstd.
+  ZSTD_FOUND          - True if zstd found.
+
+::
+
+  ZSTD_VERSION_STRING - The version of zstd found (x.y.z)
+  ZSTD_VERSION_MAJOR  - The major version of zstd
+  ZSTD_VERSION_MINOR  - The minor version of zstd
+
+  Debug and Release variants are found separately.
+#]=======================================================================]
+
+# Standard names to search for
+set(ZSTD_NAMES zstd zstd_static)
+set(ZSTD_NAMES_DEBUG zstdd zstd_staticd)
+
+find_path(ZSTD_INCLUDE_DIR
+          NAMES zstd.h
+          PATH_SUFFIXES include)
+
+# Allow ZSTD_LIBRARY to be set manually, as the location of the zstd library
+if(NOT ZSTD_LIBRARY)
+  find_library(ZSTD_LIBRARY_RELEASE
+               NAMES ${ZSTD_NAMES}
+               PATH_SUFFIXES lib)
+  find_library(ZSTD_LIBRARY_DEBUG
+               NAMES ${ZSTD_NAMES_DEBUG}
+               PATH_SUFFIXES lib)
+
+  include(SelectLibraryConfigurations)
+  select_library_configurations(ZSTD)
+endif()
+
+unset(ZSTD_NAMES)
+unset(ZSTD_NAMES_DEBUG)
+
+mark_as_advanced(ZSTD_INCLUDE_DIR)
+
+if(ZSTD_INCLUDE_DIR AND EXISTS "${ZSTD_INCLUDE_DIR}/zstd.h")
+    file(STRINGS "${ZSTD_INCLUDE_DIR}/zstd.h" ZSTD_H REGEX "^#define ZSTD_VERSION_.*$")
+
+    string(REGEX REPLACE "^.*ZSTD_VERSION_MAJOR  *([0-9]+).*$" "\\1" ZSTD_MAJOR_VERSION "${ZSTD_H}")
+    string(REGEX REPLACE "^.*ZSTD_VERSION_MINOR  *([0-9]+).*$" "\\1" ZSTD_MINOR_VERSION "${ZSTD_H}")
+    string(REGEX REPLACE "^.*ZSTD_VERSION_RELEASE  *([0-9]+).*$" "\\1" ZSTD_PATCH_VERSION "${ZSTD_H}")
+    set(ZSTD_VERSION_STRING "${ZSTD_MAJOR_VERSION}.${ZSTD_MINOR_VERSION}.${ZSTD_PATCH_VERSION}")
+endif()
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(ZSTD
+        REQUIRED_VARS ZSTD_LIBRARY ZSTD_INCLUDE_DIR
+        VERSION_VAR ZSTD_VERSION_STRING)
+
+if(ZSTD_FOUND)
+    set(ZSTD_INCLUDE_DIRS ${ZSTD_INCLUDE_DIR})
+
+    if(NOT ZSTD_LIBRARIES)
+        set(ZSTD_LIBRARIES ${ZSTD_LIBRARY})
+    endif()
+
+    if(NOT TARGET ZSTD::ZSTD)
+        add_library(ZSTD::ZSTD UNKNOWN IMPORTED)
+        set_target_properties(ZSTD::ZSTD PROPERTIES
+                INTERFACE_INCLUDE_DIRECTORIES "${ZSTD_INCLUDE_DIRS}")
+
+        if(ZSTD_LIBRARY_RELEASE)
+            set_property(TARGET ZSTD::ZSTD APPEND PROPERTY
+                    IMPORTED_CONFIGURATIONS RELEASE)
+            set_target_properties(ZSTD::ZSTD PROPERTIES
+                    IMPORTED_LOCATION_RELEASE "${ZSTD_LIBRARY_RELEASE}")
+        endif()
+
+        if(ZSTD_LIBRARY_DEBUG)
+            set_property(TARGET ZSTD::ZSTD APPEND PROPERTY
+                    IMPORTED_CONFIGURATIONS DEBUG)
+            set_target_properties(ZSTD::ZSTD PROPERTIES
+                    IMPORTED_LOCATION_DEBUG "${ZSTD_LIBRARY_DEBUG}")
+        endif()
+
+        if(NOT ZSTD_LIBRARY_RELEASE AND NOT ZSTD_LIBRARY_DEBUG)
+            set_target_properties(ZSTD::ZSTD PROPERTIES
+                    IMPORTED_LOCATION_RELEASE "${ZSTD_LIBRARY}")
+        endif()
+    endif()
+endif()