Merge topic 'fix-pkg_search_module-cache'

40249bcc FindPkgConfig: set standard variables in the cache

Modules/FindPkgConfig.cmake

@@ -382,6 +382,9 @@ macro(_pkg_check_modules_internal _is_required _is_silent _no_cmake_path _no_cma
         pkg_get_variable("${_pkg_check_prefix}_PREFIX" ${_pkg_check_modules_pkg} "prefix")
         pkg_get_variable("${_pkg_check_prefix}_INCLUDEDIR" ${_pkg_check_modules_pkg} "includedir")
         pkg_get_variable("${_pkg_check_prefix}_LIBDIR" ${_pkg_check_modules_pkg} "libdir")
+        foreach (variable IN ITEMS PREFIX INCLUDEDIR LIBDIR)
+          _pkgconfig_set("${_pkg_check_modules_pkg}_${variable}" "${${_pkg_check_modules_pkg}_${variable}}")
+        endforeach ()
 
         if (NOT ${_is_silent})
           message(STATUS "  Found ${_pkg_check_modules_pkg}, version ${_pkgconfig_VERSION}")

Tests/RunCMake/FindPkgConfig/FindPkgConfig_cache_variables.cmake

@@ -0,0 +1,16 @@
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(NCURSES QUIET ncurses)
+
+if (NCURSES_FOUND)
+  foreach (variable IN ITEMS PREFIX INCLUDEDIR LIBDIR)
+    get_property("${variable}"
+      CACHE     "NCURSES_${variable}"
+      PROPERTY  TYPE
+      SET)
+    if (NOT ${variable})
+      message(FATAL_ERROR "Failed to set cache entry for NCURSES_${variable}")
+    endif ()
+  endforeach ()
+else ()
+  message(STATUS "skipping test; ncurses not found")
+endif ()

Tests/RunCMake/FindPkgConfig/RunCMakeTest.cmake

@@ -14,4 +14,5 @@ endif()
 find_package(PkgConfig)
 if (PKG_CONFIG_FOUND)
   run_cmake(FindPkgConfig_GET_VARIABLE)
+  run_cmake(FindPkgConfig_cache_variables)
 endif ()