GNUInstallDirs: Add test cases

Add a RunCMake.GNUInstallDirs test with cases covering various install
prefixes.  Hard-code the architecture information.  Tolerate all
platform-specific LIBDIR values.

Currently the root prefix is not handled well, but verify the current
behavior in the test anyway.  This can be addressed with a future
change.
Inspired-by: Alex Turbov <i.zaufi@gmail.com>

Tests/RunCMake/CMakeLists.txt

@@ -95,6 +95,7 @@ add_RunCMake_test(FPHSA)
 add_RunCMake_test(GeneratorExpression)
 add_RunCMake_test(GeneratorPlatform)
 add_RunCMake_test(GeneratorToolset)
+add_RunCMake_test(GNUInstallDirs)
 add_RunCMake_test(TargetPropertyGeneratorExpressions)
 add_RunCMake_test(Languages)
 add_RunCMake_test(ObjectLibrary)

Tests/RunCMake/GNUInstallDirs/CMakeLists.txt

+cmake_minimum_required(VERSION 3.3)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)

Tests/RunCMake/GNUInstallDirs/Common.cmake

+set(CMAKE_SIZEOF_VOID_P 8)
+set(CMAKE_LIBRARY_ARCHITECTURE "arch")
+if(CMAKE_SYSTEM_NAME STREQUAL "OpenBSD")
+  set(CMAKE_SYSTEM_NAME "OpenBSD-Fake")
+endif()
+include(GNUInstallDirs)
+set(dirs
+  BINDIR
+  DATADIR
+  DATAROOTDIR
+  DOCDIR
+  INCLUDEDIR
+  INFODIR
+  LIBDIR
+  LIBEXECDIR
+  LOCALEDIR
+  LOCALSTATEDIR
+  MANDIR
+  SBINDIR
+  SHAREDSTATEDIR
+  SYSCONFDIR
+  )
+foreach(dir ${dirs})
+  message("CMAKE_INSTALL_${dir}='${CMAKE_INSTALL_${dir}}'")
+endforeach()
+foreach(dir ${dirs})
+  message("CMAKE_INSTALL_FULL_${dir}='${CMAKE_INSTALL_FULL_${dir}}'")
+endforeach()

Tests/RunCMake/GNUInstallDirs/Opt-stderr.txt

+^CMAKE_INSTALL_BINDIR='bin'
+CMAKE_INSTALL_DATADIR='share'
+CMAKE_INSTALL_DATAROOTDIR='share'
+CMAKE_INSTALL_DOCDIR='share/doc/Opt'
+CMAKE_INSTALL_INCLUDEDIR='include'
+CMAKE_INSTALL_INFODIR='share/info'
+CMAKE_INSTALL_LIBDIR='(lib|lib64)'
+CMAKE_INSTALL_LIBEXECDIR='libexec'
+CMAKE_INSTALL_LOCALEDIR='share/locale'
+CMAKE_INSTALL_LOCALSTATEDIR='var'
+CMAKE_INSTALL_MANDIR='share/man'
+CMAKE_INSTALL_SBINDIR='sbin'
+CMAKE_INSTALL_SHAREDSTATEDIR='com'
+CMAKE_INSTALL_SYSCONFDIR='etc'
+CMAKE_INSTALL_FULL_BINDIR='/opt/Opt/bin'
+CMAKE_INSTALL_FULL_DATADIR='/opt/Opt/share'
+CMAKE_INSTALL_FULL_DATAROOTDIR='/opt/Opt/share'
+CMAKE_INSTALL_FULL_DOCDIR='/opt/Opt/share/doc/Opt'
+CMAKE_INSTALL_FULL_INCLUDEDIR='/opt/Opt/include'
+CMAKE_INSTALL_FULL_INFODIR='/opt/Opt/share/info'
+CMAKE_INSTALL_FULL_LIBDIR='/opt/Opt/(lib|lib64)'
+CMAKE_INSTALL_FULL_LIBEXECDIR='/opt/Opt/libexec'
+CMAKE_INSTALL_FULL_LOCALEDIR='/opt/Opt/share/locale'
+CMAKE_INSTALL_FULL_LOCALSTATEDIR='/opt/Opt/var'
+CMAKE_INSTALL_FULL_MANDIR='/opt/Opt/share/man'
+CMAKE_INSTALL_FULL_SBINDIR='/opt/Opt/sbin'
+CMAKE_INSTALL_FULL_SHAREDSTATEDIR='/opt/Opt/com'
+CMAKE_INSTALL_FULL_SYSCONFDIR='/opt/Opt/etc'$

Tests/RunCMake/GNUInstallDirs/Opt.cmake

+set(CMAKE_INSTALL_PREFIX "/opt/${PROJECT_NAME}")
+include(Common.cmake)

Tests/RunCMake/GNUInstallDirs/Root-stderr.txt

+^CMAKE_INSTALL_BINDIR='bin'
+CMAKE_INSTALL_DATADIR='share'
+CMAKE_INSTALL_DATAROOTDIR='share'
+CMAKE_INSTALL_DOCDIR='share/doc/Root'
+CMAKE_INSTALL_INCLUDEDIR='include'
+CMAKE_INSTALL_INFODIR='share/info'
+CMAKE_INSTALL_LIBDIR='(lib|lib64)'
+CMAKE_INSTALL_LIBEXECDIR='libexec'
+CMAKE_INSTALL_LOCALEDIR='share/locale'
+CMAKE_INSTALL_LOCALSTATEDIR='var'
+CMAKE_INSTALL_MANDIR='share/man'
+CMAKE_INSTALL_SBINDIR='sbin'
+CMAKE_INSTALL_SHAREDSTATEDIR='com'
+CMAKE_INSTALL_SYSCONFDIR='etc'
+CMAKE_INSTALL_FULL_BINDIR='//bin'
+CMAKE_INSTALL_FULL_DATADIR='//share'
+CMAKE_INSTALL_FULL_DATAROOTDIR='//share'
+CMAKE_INSTALL_FULL_DOCDIR='//share/doc/Root'
+CMAKE_INSTALL_FULL_INCLUDEDIR='//include'
+CMAKE_INSTALL_FULL_INFODIR='//share/info'
+CMAKE_INSTALL_FULL_LIBDIR='//(lib|lib64)'
+CMAKE_INSTALL_FULL_LIBEXECDIR='//libexec'
+CMAKE_INSTALL_FULL_LOCALEDIR='//share/locale'
+CMAKE_INSTALL_FULL_LOCALSTATEDIR='//var'
+CMAKE_INSTALL_FULL_MANDIR='//share/man'
+CMAKE_INSTALL_FULL_SBINDIR='//sbin'
+CMAKE_INSTALL_FULL_SHAREDSTATEDIR='//com'
+CMAKE_INSTALL_FULL_SYSCONFDIR='//etc'$

Tests/RunCMake/GNUInstallDirs/Root.cmake

+set(CMAKE_INSTALL_PREFIX "/")
+include(Common.cmake)

Tests/RunCMake/GNUInstallDirs/RunCMakeTest.cmake

+include(RunCMake)
+
+run_cmake(Opt)
+run_cmake(Root)
+run_cmake(Usr)
+run_cmake(UsrLocal)

Tests/RunCMake/GNUInstallDirs/Usr-stderr.txt

+^CMAKE_INSTALL_BINDIR='bin'
+CMAKE_INSTALL_DATADIR='share'
+CMAKE_INSTALL_DATAROOTDIR='share'
+CMAKE_INSTALL_DOCDIR='share/doc/Usr'
+CMAKE_INSTALL_INCLUDEDIR='include'
+CMAKE_INSTALL_INFODIR='share/info'
+CMAKE_INSTALL_LIBDIR='(lib|lib64|lib/arch)'
+CMAKE_INSTALL_LIBEXECDIR='libexec'
+CMAKE_INSTALL_LOCALEDIR='share/locale'
+CMAKE_INSTALL_LOCALSTATEDIR='var'
+CMAKE_INSTALL_MANDIR='share/man'
+CMAKE_INSTALL_SBINDIR='sbin'
+CMAKE_INSTALL_SHAREDSTATEDIR='com'
+CMAKE_INSTALL_SYSCONFDIR='etc'
+CMAKE_INSTALL_FULL_BINDIR='/usr/bin'
+CMAKE_INSTALL_FULL_DATADIR='/usr/share'
+CMAKE_INSTALL_FULL_DATAROOTDIR='/usr/share'
+CMAKE_INSTALL_FULL_DOCDIR='/usr/share/doc/Usr'
+CMAKE_INSTALL_FULL_INCLUDEDIR='/usr/include'
+CMAKE_INSTALL_FULL_INFODIR='/usr/share/info'
+CMAKE_INSTALL_FULL_LIBDIR='/usr/(lib|lib64|lib/arch)'
+CMAKE_INSTALL_FULL_LIBEXECDIR='/usr/libexec'
+CMAKE_INSTALL_FULL_LOCALEDIR='/usr/share/locale'
+CMAKE_INSTALL_FULL_LOCALSTATEDIR='/usr/var'
+CMAKE_INSTALL_FULL_MANDIR='/usr/share/man'
+CMAKE_INSTALL_FULL_SBINDIR='/usr/sbin'
+CMAKE_INSTALL_FULL_SHAREDSTATEDIR='/usr/com'
+CMAKE_INSTALL_FULL_SYSCONFDIR='/usr/etc'$

Tests/RunCMake/GNUInstallDirs/Usr.cmake

+set(CMAKE_INSTALL_PREFIX "/usr")
+include(Common.cmake)

Tests/RunCMake/GNUInstallDirs/UsrLocal-stderr.txt

+^CMAKE_INSTALL_BINDIR='bin'
+CMAKE_INSTALL_DATADIR='share'
+CMAKE_INSTALL_DATAROOTDIR='share'
+CMAKE_INSTALL_DOCDIR='share/doc/UsrLocal'
+CMAKE_INSTALL_INCLUDEDIR='include'
+CMAKE_INSTALL_INFODIR='share/info'
+CMAKE_INSTALL_LIBDIR='(lib|lib64)'
+CMAKE_INSTALL_LIBEXECDIR='libexec'
+CMAKE_INSTALL_LOCALEDIR='share/locale'
+CMAKE_INSTALL_LOCALSTATEDIR='var'
+CMAKE_INSTALL_MANDIR='share/man'
+CMAKE_INSTALL_SBINDIR='sbin'
+CMAKE_INSTALL_SHAREDSTATEDIR='com'
+CMAKE_INSTALL_SYSCONFDIR='etc'
+CMAKE_INSTALL_FULL_BINDIR='/usr/local/bin'
+CMAKE_INSTALL_FULL_DATADIR='/usr/local/share'
+CMAKE_INSTALL_FULL_DATAROOTDIR='/usr/local/share'
+CMAKE_INSTALL_FULL_DOCDIR='/usr/local/share/doc/UsrLocal'
+CMAKE_INSTALL_FULL_INCLUDEDIR='/usr/local/include'
+CMAKE_INSTALL_FULL_INFODIR='/usr/local/share/info'
+CMAKE_INSTALL_FULL_LIBDIR='/usr/local/(lib|lib64)'
+CMAKE_INSTALL_FULL_LIBEXECDIR='/usr/local/libexec'
+CMAKE_INSTALL_FULL_LOCALEDIR='/usr/local/share/locale'
+CMAKE_INSTALL_FULL_LOCALSTATEDIR='/usr/local/var'
+CMAKE_INSTALL_FULL_MANDIR='/usr/local/share/man'
+CMAKE_INSTALL_FULL_SBINDIR='/usr/local/sbin'
+CMAKE_INSTALL_FULL_SHAREDSTATEDIR='/usr/local/com'
+CMAKE_INSTALL_FULL_SYSCONFDIR='/usr/local/etc'$

Tests/RunCMake/GNUInstallDirs/UsrLocal.cmake

+set(CMAKE_INSTALL_PREFIX "/usr/local")
+include(Common.cmake)