1 files changed, 68 insertions, 0 deletions
diff --git a/cmake/modules/FindPackageVersionCheck.cmake b/cmake/modules/FindPackageVersionCheck.cmake
new file mode 100644
index 0000000..711f2b6
--- /dev/null
+++ b/cmake/modules/FindPackageVersionCheck.cmake
@@ -0,0 +1,68 @@
+# FIND_PACKAGE_VERSION_CHECK(NAME (DEFAULT_MSG|"Custom failure message"))
+#    This function is intended to be used in FindXXX.cmake modules files.
+#    It handles NAME_FIND_VERSION and NAME_VERSION variables in a Module.
+#
+#    Example:
+#    find_package(LibSSH 0.3.2)
+#
+#    # check for the version and set it
+#    set(LibSSH_VERSION 0.3.0)
+#    find_package_version_check(LibSSH DEFAULT_MSG)
+#
+#
+# Copyright (c) 2009 Andreas Schneider <mail@cynapses.org>
+#
+# Redistribution and use is allowed according to the terms of the New
+# BSD license.
+
+function(FIND_PACKAGE_VERSION_CHECK _NAME _FAIL_MSG)
+  string(TOUPPER ${_NAME} _NAME_UPPER)
+  set(_AGE "old")
+
+  if(${_NAME}_FIND_VERSION_EXACT)
+    if (${_NAME}_FIND_VERSION VERSION_EQUAL ${_NAME}_VERSION)
+      # exact version found
+      set(${_NAME_UPPER}_FOUND TRUE)
+    else (${_NAME}_FIND_VERSION VERSION_EQUAL ${_NAME}_VERSION)
+      # exect version not found
+      set(${_NAME_UPPER}_FOUND FALSE)
+      # check if newer or older
+      if (${_NAME}_FIND_VERSION VERSION_LESS ${_NAME}_VERSION)
+        set(_AGE "new")
+      else (${_NAME}_FIND_VERSION VERSION_LESS ${_NAME}_VERSION)
+        set(_AGE "old")
+      endif (${_NAME}_FIND_VERSION VERSION_LESS ${_NAME}_VERSION)
+    endif (${_NAME}_FIND_VERSION VERSION_EQUAL ${_NAME}_VERSION)
+  else (${_NAME}_FIND_VERSION_EXACT)
+    if (${_NAME}_FIND_VERSION)
+      if (${_NAME}_VERSION VERSION_LESS ${_NAME}_FIND_VERSION)
+        set(${_NAME_UPPER}_FOUND FALSE)
+        set(_AGE "old")
+      else (${_NAME}_VERSION VERSION_LESS ${_NAME}_FIND_VERSION)
+        set(${_NAME_UPPER}_FOUND TRUE)
+     endif (${_NAME}_VERSION VERSION_LESS ${_NAME}_FIND_VERSION)
+    endif (${_NAME}_FIND_VERSION)
+  endif(${_NAME}_FIND_VERSION_EXACT)
+
+  if ("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG")
+    if (${_NAME}_FIND_VERSION_EXACT)
+      set(_FAIL_MESSAGE "The installed ${_NAME} version ${${_NAME}_VERSION} is too ${_AGE}, version ${${_NAME}_FIND_VERSION} is required.")
+    else (${_NAME}_FIND_VERSION_EXACT)
+      set(_FAIL_MESSAGE "The installed ${_NAME} version ${${_NAME}_VERSION} is too ${_AGE}, at least version ${${_NAME}_FIND_VERSION} is required.")
+    endif (${_NAME}_FIND_VERSION_EXACT)
+  else ("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG")
+    set(_FAIL_MESSAGE "${_FAIL_MSG}")
+  endif ("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG")
+
+  if (NOT ${_NAME_UPPER}_FOUND)
+    if (${_NAME}_FIND_REQUIRED)
+      message(FATAL_ERROR "${_FAIL_MESSAGE}")
+    else (${_NAME}_FIND_REQUIRED)
+      if (NOT ${_NAME}_FIND_QUIETLY)
+        message(STATUS "${_FAIL_MESSAGE}")
+      endif (NOT ${_NAME}_FIND_QUIETLY)
+    endif (${_NAME}_FIND_REQUIRED)
+  endif (NOT ${_NAME_UPPER}_FOUND)
+
+  set(${_NAME_UPPER}_FOUND ${${_NAME_UPPER}_FOUND} PARENT_SCOPE)
+endfunction(FIND_PACKAGE_VERSION_CHECK)