Make KDEInstallDirs provide KDE_INSTALL_* variables.

Creating variables whose names start with CMAKE_ is a bad idea for
modules distributed outside CMake itself. Since the module is called
KDEInstallDirs, having a KDE_INSTALL_ prefix for the variables is clear
and intuitive.

Both CMAKE_INSTALL_* variables and the older KDELibs4-compatible
variables are provided, unless KDE_INSTALL_DIRS_NO_DEPRECATED is set to
TRUE before the module is included. Even then, the CMAKE_INSTALL_*
variables provided by the GNUInstallDirs module will still be set and
understood (for compatibility with that module), unless
KDE_INSTALL_DIRS_NO_CMAKE_VARIABLES is set to TRUE.

REVIEW: 121646

3 files changed, 215 insertions, 2 deletions

diff --git a/tests/KDEInstallDirsTest/not_cache_variable/CMakeLists.txt b/tests/KDEInstallDirsTest/not_cache_variable/CMakeLists.txt
index ea62d95b..8ddbb27a 100644
--- a/tests/KDEInstallDirsTest/not_cache_variable/CMakeLists.txt
+++ b/tests/KDEInstallDirsTest/not_cache_variable/CMakeLists.txt
@@ -4,9 +4,44 @@ cmake_minimum_required(VERSION 2.8)
 
 set(ECM_KDE_MODULE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../../kde-modules)
 set(ECM_MODULE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../../modules)
+set(CMAKE_MODULE_PATH "${ECM_KDE_MODULE_DIR}")
 
-set(CMAKE_INSTALL_LIBDIR "foo")
-include(${ECM_KDE_MODULE_DIR}/KDEInstallDirs.cmake)
+set(KDE_INSTALL_BINDIR "altbin")
+set(CMAKE_INSTALL_DATADIR "altdata")
+set(LIB_INSTALL_DIR "altlib")
+
+include(KDEInstallDirs)
+
+
+include(../var_list.cmake)
+include(../../test_helpers.cmake)
+
+message(STATUS "Checking result of setting KDE_INSTALL_BINDIR")
+assert_var_str_value(KDE_INSTALL_BINDIR "altbin")
+if(should_set_CMAKE_INSTALL_BINDIR)
+    assert_var_str_value(CMAKE_INSTALL_BINDIR "altbin")
+endif()
+if(NOT KDE_INSTALL_DIRS_NO_DEPRECATED)
+    assert_var_str_value(BIN_INSTALL_DIR "altbin")
+endif()
+
+if(should_set_CMAKE_INSTALL_DATADIR)
+    message(STATUS "Checking result of setting CMAKE_INSTALL_DATADIR")
+    assert_var_str_value(KDE_INSTALL_DATADIR "altdata")
+    assert_var_str_value(CMAKE_INSTALL_DATADIR "altdata")
+    if(NOT KDE_INSTALL_DIRS_NO_DEPRECATED)
+        assert_var_str_value(DATA_INSTALL_DIR "altdata")
+    endif()
+endif()
+
+if(NOT KDE_INSTALL_DIRS_NO_DEPRECATED)
+    message(STATUS "Checking result of setting LIB_INSTALL_DIR")
+    assert_var_str_value(KDE_INSTALL_LIBDIR "altlib")
+    if(should_set_CMAKE_INSTALL_LIBDIR)
+        assert_var_str_value(CMAKE_INSTALL_LIBDIR "altlib")
+    endif()
+    assert_var_str_value(LIB_INSTALL_DIR "altlib")
+endif()
 
 add_executable(dummy main.c)
 set_target_properties(dummy PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
diff --git a/tests/KDEInstallDirsTest/vars_in_sync/CMakeLists.txt b/tests/KDEInstallDirsTest/vars_in_sync/CMakeLists.txt
new file mode 100644
index 00000000..4249ed0d
--- /dev/null
+++ b/tests/KDEInstallDirsTest/vars_in_sync/CMakeLists.txt
@@ -0,0 +1,174 @@
+project(KDEInstallDirs.vars_in_sync)
+cmake_minimum_required(VERSION 2.8.12)
+
+set(ECM_KDE_MODULE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../../kde-modules)
+set(ECM_MODULE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../../modules)
+set(CMAKE_MODULE_PATH "${ECM_KDE_MODULE_DIR}")
+include(KDEInstallDirs)
+
+set(var_suffixes
+    APPDIR
+    AUTOSTARTDIR
+    BINDIR
+    CMAKEPACKAGEDIR
+    CONFDIR
+    DATADIR
+    DATADIR_KF5
+    DATAROOTDIR
+    DBUSDIR
+    DBUSINTERFACEDIR
+    DBUSSERVICEDIR
+    DBUSSYSTEMSERVICEDIR
+    DESKTOPDIR
+    DOCBUNDLEDIR
+    EXECROOTDIR
+    ICONDIR
+    INCLUDEDIR
+    INCLUDEDIR_KF5
+    INFODIR
+    KCFGDIR
+    KCONFUPDATEDIR
+    KNOTIFY5RCDIR
+    KXMLGUI5DIR
+    KSERVICES5DIR
+    KSERVICETYPES5DIR
+    LIBDIR
+    LIBEXECDIR
+    LIBEXECDIR_KF5
+    LOCALEDIR
+    LOCALSTATEDIR
+    MANDIR
+    MIMEDIR
+    METAINFODIR
+    PLUGINDIR
+    QMLDIR
+    QTPLUGINDIR
+    QTQUICKIMPORTSDIR
+    SBINDIR
+    SHAREDSTATEDIR
+    SOUNDDIR
+    SYSCONFDIR
+    TEMPLATEDIR
+    WALLPAPERDIR)
+
+set(COMPAT_APPDIR XDG_APPS_INSTALL_DIR)
+set(COMPAT_AUTOSTARTDIR AUTOSTART_INSTALL_DIR)
+set(COMPAT_BINDIR BIN_INSTALL_DIR)
+set(COMPAT_CMAKEPACKAGEDIR CMAKECONFIG_INSTALL_PREFIX)
+set(COMPAT_CONFDIR CONFIG_INSTALL_DIR)
+set(COMPAT_DATADIR DATA_INSTALL_DIR)
+set(COMPAT_DATADIR_KF5 KF5_DATA_INSTALL_DIR)
+set(COMPAT_DATAROOTDIR SHARE_INSTALL_PREFIX)
+set(COMPAT_DBUSINTERFACEDIR DBUS_INTERFACES_INSTALL_DIR)
+set(COMPAT_DBUSSERVICEDIR DBUS_SERVICES_INSTALL_DIR)
+set(COMPAT_DBUSSYSTEMSERVICEDIR DBUS_SYSTEM_SERVICES_INSTALL_DIR)
+set(COMPAT_DESKTOPDIR XDG_DIRECTORY_INSTALL_DIR)
+set(COMPAT_DOCBUNDLEDIR HTML_INSTALL_DIR)
+set(COMPAT_EXECROOTDIR EXEC_INSTALL_PREFIX)
+set(COMPAT_ICONDIR ICON_INSTALL_DIR)
+set(COMPAT_INCLUDEDIR INCLUDE_INSTALL_DIR)
+set(COMPAT_INCLUDEDIR_KF5 KF5_INCLUDE_INSTALL_DIR)
+set(COMPAT_KCFGDIR KCFG_INSTALL_DIR)
+set(COMPAT_KCONFUPDATEDIR KCONF_UPDATE_INSTALL_DIR)
+set(COMPAT_KNOTIFY5RCDIR KNOTIFYRC_INSTALL_DIR)
+set(COMPAT_KXMLGUI5DIR KXMLGUI_INSTALL_DIR)
+set(COMPAT_KSERVICES5DIR SERVICES_INSTALL_DIR)
+set(COMPAT_KSERVICETYPES5DIR SERVICETYPES_INSTALL_DIR)
+set(COMPAT_LIBDIR LIB_INSTALL_DIR)
+set(COMPAT_LIBEXECDIR LIBEXEC_INSTALL_DIR)
+set(COMPAT_LIBEXECDIR_KF5 KF5_LIBEXEC_INSTALL_DIR)
+set(COMPAT_LOCALEDIR LOCALE_INSTALL_DIR)
+set(COMPAT_MANDIR MAN_INSTALL_DIR)
+set(COMPAT_MIMEDIR XDG_MIME_INSTALL_DIR)
+set(COMPAT_PLUGINDIR PLUGIN_INSTALL_DIR)
+set(COMPAT_QMLDIR QML_INSTALL_DIR)
+set(COMPAT_QTPLUGINDIR QT_PLUGIN_INSTALL_DIR)
+set(COMPAT_QTQUICKIMPORTSDIR IMPORTS_INSTALL_DIR)
+set(COMPAT_SBINDIR SBIN_INSTALL_DIR)
+set(COMPAT_SOUNDDIR SOUND_INSTALL_DIR)
+set(COMPAT_SYSCONFDIR SYSCONF_INSTALL_DIR)
+set(COMPAT_TEMPLATEDIR TEMPLATES_INSTALL_DIR)
+set(COMPAT_WALLPAPERDIR WALLPAPER_INSTALL_DIR)
+if(APPLE)
+    set(COMPAT_BUNDLEDIR BUNDLE_INSTALL_DIR)
+    list(APPEND var_suffixes BUNDLEDIR)
+endif()
+
+set(gnu_install_dirs_suffixes
+    BINDIR
+    SBINDIR
+    LIBEXECDIR
+    SYSCONFDIR
+    SHAREDSTATEDIR
+    LOCALSTATEDIR
+    LIBDIR
+    INCLUDEDIR
+    OLDINCLUDEDIR
+    DATAROOTDIR
+    DATADIR
+    INFODIR
+    LOCALEDIR
+    MANDIR
+    DOCDIR)
+
+macro(assert_defined varname)
+    if(NOT DEFINED ${varname})
+        message(SEND_ERROR "${varname} is not defined.")
+    endif()
+endmacro()
+macro(assert_non_empty varname)
+    assert_defined(${varname})
+    if(NOT ${varname})
+        message(SEND_ERROR "${varname} is empty")
+    endif()
+endmacro()
+macro(assert_str_equal varname exp_varname)
+    assert_defined(${varname})
+    if(NOT ${varname} STREQUAL ${exp_varname})
+        message(SEND_ERROR "${varname} is '${${varname}}', expecting '${${exp_varname}}'.")
+    endif()
+endmacro()
+set(FOO bax)
+assert_defined(FOO)
+set(BAR bax)
+assert_str_equal(FOO BAR)
+
+foreach(suffix ${var_suffixes})
+    assert_defined(KDE_INSTALL_${suffix})
+    assert_defined(KDE_INSTALL_FULL_${suffix})
+
+    set(should_have_cmake_var TRUE)
+    if(KDE_INSTALL_DIRS_NO_CMAKE_VARIABLES)
+        set(should_have_cmake_var FALSE)
+    elseif(KDE_INSTALL_DIRS_NO_DEPRECATED)
+        list(FIND gnu_install_dirs_suffixes "${suffix}" _list_offset)
+        if(_list_offset EQUAL -1)
+            set(should_have_cmake_var FALSE)
+        endif()
+    endif()
+    if(should_have_cmake_var)
+        assert_str_equal(CMAKE_INSTALL_${suffix} KDE_INSTALL_${suffix})
+        assert_str_equal(CMAKE_INSTALL_FULL_${suffix} KDE_INSTALL_FULL_${suffix})
+    endif()
+
+    set(should_have_compat_var TRUE)
+    if(NOT DEFINED COMPAT_${suffix})
+        set(should_have_compat_var FALSE)
+    elseif(KDE_INSTALL_DIRS_NO_DEPRECATED)
+        set(should_have_compat_var FALSE)
+    endif()
+    if(should_have_compat_var)
+        assert_str_equal(${COMPAT_${suffix}} KDE_INSTALL_${suffix})
+    endif()
+endforeach()
+
+assert_defined(KF5_INSTALL_TARGETS_DEFAULT_ARGS)
+assert_defined(KDE_INSTALL_TARGETS_DEFAULT_ARGS)
+if(NOT KDE_INSTALL_DIRS_NO_CMAKE_VARIABLES AND
+   NOT KDE_INSTALL_DIRS_NO_DEPRECATED)
+    assert_str_equal(INSTALL_TARGETS_DEFAULT_ARGS
+                     KDE_INSTALL_TARGETS_DEFAULT_ARGS)
+endif()
+
+add_executable(dummy main.c)
+set_target_properties(dummy PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
diff --git a/tests/KDEInstallDirsTest/vars_in_sync/main.c b/tests/KDEInstallDirsTest/vars_in_sync/main.c
new file mode 100644
index 00000000..c13815ce
--- /dev/null
+++ b/tests/KDEInstallDirsTest/vars_in_sync/main.c
@@ -0,0 +1,4 @@
+int main()
+{
+   return 0;
+}