Added LibFTDI1ConfigVersion to allow version detection

[libftdi] / cmake / LibFTDI1ConfigVersion.cmake.in

diff --git a/cmake/LibFTDI1ConfigVersion.cmake.in b/cmake/LibFTDI1ConfigVersion.cmake.in
new file mode 100644 (file)
index 0000000..ed0d463
--- /dev/null
+++ b/cmake/LibFTDI1ConfigVersion.cmake.in
@@ -0,0 +1,31 @@
+# This is a basic version file for the Config-mode of find_package().
+# It is used by write_basic_package_version_file() as input file for configure_file()
+# to create a version-file which can be installed along a config.cmake file.
+#
+# The created file sets PACKAGE_VERSION_EXACT if the current version string and
+# the requested version string are exactly the same and it sets
+# PACKAGE_VERSION_COMPATIBLE if the current version is >= requested version.
+# The variable CVF_VERSION must be set before calling configure_file().
+
+set(PACKAGE_VERSION "@LIBFTDI_VERSION_STRING@")
+
+if("${PACKAGE_VERSION}" VERSION_LESS "${PACKAGE_FIND_VERSION}" )
+  set(PACKAGE_VERSION_COMPATIBLE FALSE)
+else()
+  set(PACKAGE_VERSION_COMPATIBLE TRUE)
+  if( "${PACKAGE_FIND_VERSION}" STREQUAL "${PACKAGE_VERSION}")
+    set(PACKAGE_VERSION_EXACT TRUE)
+  endif()
+endif()
+
+# if the installed or the using project don't have CMAKE_SIZEOF_VOID_P set, ignore it:
+if("${CMAKE_SIZEOF_VOID_P}"  STREQUAL ""  OR "8" STREQUAL "")
+   return()
+endif()
+
+# check that the installed version has the same 32/64bit-ness as the one which is currently searching:
+if(NOT "${CMAKE_SIZEOF_VOID_P}"  STREQUAL  "8")
+   math(EXPR installedBits "8 * 8")
+   set(PACKAGE_VERSION "${PACKAGE_VERSION} (${installedBits}bit)")
+   set(PACKAGE_VERSION_UNSUITABLE TRUE)
+endif()