FindPkgConfig: Fix extra paths for CMAKE_{FRAMEWORK,APPBUNDLE}_PATH vars

The CMAKE_FRAMEWORK_PATH and CMAKE_APPBUNDLE_PATH cache variables are
supposed to be used to generate the extra paths passed to pkg-config,
but instead the CMAKE_PREFIX_PATH variable is used.

This bug was introduced by the refactor in commit v3.1.0-rc1~747^2~1.

Modules/FindPkgConfig.cmake

@@ -149,7 +149,7 @@ function(_pkgconfig_add_extra_path _extra_paths_var _var)
   endif()
   if(NOT _is_env)
     if(NOT "${${_var}}" STREQUAL "")
-      list(APPEND ${_extra_paths_var} ${CMAKE_PREFIX_PATH})
+      list(APPEND ${_extra_paths_var} ${${_var}})
     endif()
   else()
     if(NOT "$ENV{${_var}}" STREQUAL "")

Tests/RunCMake/FindPkgConfig/FindPkgConfig_CMAKE_APPBUNDLE_PATH.cmake

@@ -0,0 +1,51 @@
+# Needed for CMAKE_SYSTEM_NAME, CMAKE_LIBRARY_ARCHITECTURE and FIND_LIBRARY_USE_LIB64_PATHS
+enable_language(C)
+
+# Prepare environment and variables
+set(PKG_CONFIG_USE_CMAKE_PREFIX_PATH TRUE)
+set(CMAKE_APPBUNDLE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/pc-foo")
+if(WIN32)
+    set(PKG_CONFIG_EXECUTABLE "${CMAKE_CURRENT_SOURCE_DIR}\\dummy-pkg-config.bat")
+    set(ENV{CMAKE_APPBUNDLE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}\\pc-bar;X:\\this\\directory\\should\\not\\exist\\in\\the\\filesystem")
+    set(ENV{PKG_CONFIG_PATH} "C:\\baz")
+else()
+    set(PKG_CONFIG_EXECUTABLE "${CMAKE_CURRENT_SOURCE_DIR}/dummy-pkg-config.sh")
+    set(ENV{CMAKE_APPBUNDLE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/pc-bar:/this/directory/should/not/exist/in/the/filesystem")
+    set(ENV{PKG_CONFIG_PATH} "/baz")
+endif()
+
+
+find_package(PkgConfig)
+
+
+if(NOT DEFINED CMAKE_SYSTEM_NAME
+    OR (CMAKE_SYSTEM_NAME MATCHES "^(Linux|kFreeBSD|GNU)$"
+    AND NOT CMAKE_CROSSCOMPILING))
+  if(EXISTS "/etc/debian_version") # is this a debian system ?
+    if(CMAKE_LIBRARY_ARCHITECTURE MATCHES "^(i386-linux-gnu|x86_64-linux-gnu)$")
+      # Cannot create directories for all the existing architectures...
+      set(expected_path "/baz:${CMAKE_CURRENT_SOURCE_DIR}/pc-foo/lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-foo/lib/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-bar/lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-bar/lib/pkgconfig")
+    else()
+      set(expected_path "/baz:${CMAKE_CURRENT_SOURCE_DIR}/pc-foo/lib/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-bar/lib/pkgconfig")
+    endif()
+  else()
+    # not debian, chech the FIND_LIBRARY_USE_LIB64_PATHS property
+    get_property(uselib64 GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS)
+    if(uselib64)
+      set(expected_path "/baz:${CMAKE_CURRENT_SOURCE_DIR}/pc-foo/lib64/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-foo/lib/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-bar/lib64/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-bar/lib/pkgconfig")
+    endif()
+  endif()
+else()
+  if(WIN32)
+    set(expected_path "C:\\baz;${CMAKE_CURRENT_SOURCE_DIR}\\pc-foo\\lib\\pkgconfig;${CMAKE_CURRENT_SOURCE_DIR}\\pc-bar\\lib\\pkgconfig")
+  else()
+    set(expected_path "/baz:${CMAKE_CURRENT_SOURCE_DIR}/pc-foo/lib/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-bar/lib/pkgconfig")
+  endif()
+endif()
+
+
+pkg_check_modules(FOO "${expected_path}")
+
+if(NOT FOO_FOUND)
+  message(FATAL_ERROR "Expected PKG_CONFIG_PATH: \"${expected_path}\".")
+endif()

Tests/RunCMake/FindPkgConfig/FindPkgConfig_CMAKE_FRAMEWORK_PATH.cmake

@@ -0,0 +1,51 @@
+# Needed for CMAKE_SYSTEM_NAME, CMAKE_LIBRARY_ARCHITECTURE and FIND_LIBRARY_USE_LIB64_PATHS
+enable_language(C)
+
+# Prepare environment and variables
+set(PKG_CONFIG_USE_CMAKE_PREFIX_PATH TRUE)
+set(CMAKE_FRAMEWORK_PATH "${CMAKE_CURRENT_SOURCE_DIR}/pc-foo")
+if(WIN32)
+    set(PKG_CONFIG_EXECUTABLE "${CMAKE_CURRENT_SOURCE_DIR}\\dummy-pkg-config.bat")
+    set(ENV{CMAKE_FRAMEWORK_PATH} "${CMAKE_CURRENT_SOURCE_DIR}\\pc-bar;X:\\this\\directory\\should\\not\\exist\\in\\the\\filesystem")
+    set(ENV{PKG_CONFIG_PATH} "C:\\baz")
+else()
+    set(PKG_CONFIG_EXECUTABLE "${CMAKE_CURRENT_SOURCE_DIR}/dummy-pkg-config.sh")
+    set(ENV{CMAKE_FRAMEWORK_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/pc-bar:/this/directory/should/not/exist/in/the/filesystem")
+    set(ENV{PKG_CONFIG_PATH} "/baz")
+endif()
+
+
+find_package(PkgConfig)
+
+
+if(NOT DEFINED CMAKE_SYSTEM_NAME
+    OR (CMAKE_SYSTEM_NAME MATCHES "^(Linux|kFreeBSD|GNU)$"
+    AND NOT CMAKE_CROSSCOMPILING))
+  if(EXISTS "/etc/debian_version") # is this a debian system ?
+    if(CMAKE_LIBRARY_ARCHITECTURE MATCHES "^(i386-linux-gnu|x86_64-linux-gnu)$")
+      # Cannot create directories for all the existing architectures...
+      set(expected_path "/baz:${CMAKE_CURRENT_SOURCE_DIR}/pc-foo/lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-foo/lib/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-bar/lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-bar/lib/pkgconfig")
+    else()
+      set(expected_path "/baz:${CMAKE_CURRENT_SOURCE_DIR}/pc-foo/lib/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-bar/lib/pkgconfig")
+    endif()
+  else()
+    # not debian, chech the FIND_LIBRARY_USE_LIB64_PATHS property
+    get_property(uselib64 GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS)
+    if(uselib64)
+      set(expected_path "/baz:${CMAKE_CURRENT_SOURCE_DIR}/pc-foo/lib64/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-foo/lib/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-bar/lib64/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-bar/lib/pkgconfig")
+    endif()
+  endif()
+else()
+  if(WIN32)
+    set(expected_path "C:\\baz;${CMAKE_CURRENT_SOURCE_DIR}\\pc-foo\\lib\\pkgconfig;${CMAKE_CURRENT_SOURCE_DIR}\\pc-bar\\lib\\pkgconfig")
+  else()
+    set(expected_path "/baz:${CMAKE_CURRENT_SOURCE_DIR}/pc-foo/lib/pkgconfig:${CMAKE_CURRENT_SOURCE_DIR}/pc-bar/lib/pkgconfig")
+  endif()
+endif()
+
+
+pkg_check_modules(FOO "${expected_path}")
+
+if(NOT FOO_FOUND)
+  message(FATAL_ERROR "Expected PKG_CONFIG_PATH: \"${expected_path}\".")
+endif()

Tests/RunCMake/FindPkgConfig/RunCMakeTest.cmake

@@ -4,3 +4,8 @@ run_cmake(FindPkgConfig_NO_PKGCONFIG_PATH)
 run_cmake(FindPkgConfig_PKGCONFIG_PATH)
 run_cmake(FindPkgConfig_PKGCONFIG_PATH_NO_CMAKE_PATH)
 run_cmake(FindPkgConfig_PKGCONFIG_PATH_NO_CMAKE_ENVIRONMENT_PATH)
+
+if(APPLE)
+  run_cmake(FindPkgConfig_CMAKE_FRAMEWORK_PATH)
+  run_cmake(FindPkgConfig_CMAKE_APPBUNDLE_PATH)
+endif()