1 files changed, 54 insertions, 0 deletions

diff --git a/externals/find-modules/Findlz4.cmake b/externals/find-modules/Findlz4.cmake
new file mode 100644
index 000000000..6279854c0
--- /dev/null
+++ b/externals/find-modules/Findlz4.cmake
@@ -0,0 +1,54 @@
+
+find_package(PkgConfig QUIET)
+pkg_check_modules(PC_lz4 QUIET lz4)
+
+find_path(lz4_INCLUDE_DIR
+  NAMES lz4.h
+  PATHS ${PC_lz4_INCLUDE_DIRS}
+)
+find_library(lz4_LIBRARY
+  NAMES lz4
+  PATHS ${PC_lz4_LIBRARY_DIRS}
+)
+
+if(lz4_INCLUDE_DIR)
+  file(STRINGS "${lz4_INCLUDE_DIR}/lz4.h" _lz4_version_lines
+    REGEX "#define[ \t]+LZ4_VERSION_(MAJOR|MINOR|RELEASE)")
+  string(REGEX REPLACE ".*LZ4_VERSION_MAJOR *\([0-9]*\).*" "\\1" _lz4_version_major "${_lz4_version_lines}")
+  string(REGEX REPLACE ".*LZ4_VERSION_MINOR *\([0-9]*\).*" "\\1" _lz4_version_minor "${_lz4_version_lines}")
+  string(REGEX REPLACE ".*LZ4_VERSION_RELEASE *\([0-9]*\).*" "\\1" _lz4_version_release "${_lz4_version_lines}")
+  set(lz4_VERSION "${_lz4_version_major}.${_lz4_version_minor}.${_lz4_version_release}")
+  unset(_lz4_version_major)
+  unset(_lz4_version_minor)
+  unset(_lz4_version_release)
+  unset(_lz4_version_lines)
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(lz4
+  FOUND_VAR lz4_FOUND
+  REQUIRED_VARS
+    lz4_LIBRARY
+    lz4_INCLUDE_DIR
+  VERSION_VAR lz4_VERSION
+)
+
+if(lz4_FOUND)
+  set(lz4_LIBRARIES ${lz4_LIBRARY})
+  set(lz4_INCLUDE_DIRS ${lz4_INCLUDE_DIR})
+  set(lz4_DEFINITIONS ${PC_lz4_CFLAGS_OTHER})
+endif()
+
+if(lz4_FOUND AND NOT TARGET lz4::lz4)
+  add_library(lz4::lz4 UNKNOWN IMPORTED)
+  set_target_properties(lz4::lz4 PROPERTIES
+    IMPORTED_LOCATION "${lz4_LIBRARY}"
+    INTERFACE_COMPILE_OPTIONS "${PC_lz4_CFLAGS_OTHER}"
+    INTERFACE_INCLUDE_DIRECTORIES "${lz4_INCLUDE_DIR}"
+  )
+endif()
+
+mark_as_advanced(
+    lz4_INCLUDE_DIR
+    lz4_LIBRARY
+)