cmake-gui: Reference LGPLv3 when redistributing Qt

Download http://www.gnu.org/licenses/lgpl.txt and place it as
Licenses/LGPLv3.txt in our source tree.  When building cmake-gui, use
option CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL to enable notification in the
"About" dialog of how the distribution of Qt is licensed.  Install the
license file as ${CMAKE_ROOT}/Licenses/LGPLv3.txt so that the dialog can
display a path to it.

10 files changed, 190 insertions, 14 deletions

diff --git a/CMakeCPack.cmake b/CMakeCPack.cmake
index 72fc97c..8879cb9 100644
--- a/CMakeCPack.cmake
+++ b/CMakeCPack.cmake
@@ -108,9 +108,9 @@ if(EXISTS "${CMAKE_ROOT}/Modules/CPack.cmake")
   set(CPACK_COMPONENTS_GROUPING IGNORE)
 ")
   else()
-    if(BUILD_QtDialog AND CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL)
+    if(BUILD_QtDialog AND USE_LGPL)
       set(_CPACK_IFW_ADDITIONAL_LICENSES
-        "\"LGPLv2.1\" \"${CMake_SOURCE_DIR}/Licenses/LGPLv2.1.txt\"")
+        "\"LGPLv${USE_LGPL}\" \"${CMake_SOURCE_DIR}/Licenses/LGPLv${USE_LGPL}.txt\"")
     endif()
   endif()
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 787f319..5336208 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,6 +28,16 @@ if(NOT CMake_TEST_EXTERNAL_CMAKE)
   set(CMake_BIN_DIR ${CMake_BINARY_DIR}/bin)
 endif()
 
+if(CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL)
+  if(CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL MATCHES "^3|2\\.1$")
+    set(USE_LGPL "${CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL}")
+  else()
+    set(USE_LGPL "2.1")
+  endif()
+else()
+  set(USE_LGPL "")
+endif()
+
 if("${CMake_SOURCE_DIR}" STREQUAL "${CMAKE_SOURCE_DIR}")
   # Disallow architecture-specific try_run.  It may not run on the host.
   macro(TRY_RUN)
diff --git a/Licenses/LGPLv3.txt b/Licenses/LGPLv3.txt
new file mode 100644
index 0000000..65c5ca8
--- /dev/null
+++ b/Licenses/LGPLv3.txt
@@ -0,0 +1,165 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
+       system, and (b) will operate properly with a modified version
+       of the Library that is interface-compatible with the Linked
+       Version.
+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
+   conveyed under the terms of this License.
+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.
diff --git a/Source/QtDialog/CMakeLists.txt b/Source/QtDialog/CMakeLists.txt
index a906f4a..68c65ac 100644
--- a/Source/QtDialog/CMakeLists.txt
+++ b/Source/QtDialog/CMakeLists.txt
@@ -150,12 +150,12 @@ if(APPLE)
     MACOSX_PACKAGE_LOCATION Resources)
 endif()
 
-if(CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL)
-  install(FILES ${CMake_SOURCE_DIR}/Licenses/LGPLv2.1.txt
+if(USE_LGPL)
+  install(FILES ${CMake_SOURCE_DIR}/Licenses/LGPLv${USE_LGPL}.txt
     DESTINATION ${CMAKE_DATA_DIR}/Licenses
     ${COMPONENT})
   set_property(SOURCE CMakeSetupDialog.cxx
-    PROPERTY COMPILE_DEFINITIONS CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL)
+    PROPERTY COMPILE_DEFINITIONS USE_LGPL="${USE_LGPL}")
 endif()
 
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
diff --git a/Source/QtDialog/CMakeSetupDialog.cxx b/Source/QtDialog/CMakeSetupDialog.cxx
index 712611d..fda3e58 100644
--- a/Source/QtDialog/CMakeSetupDialog.cxx
+++ b/Source/QtDialog/CMakeSetupDialog.cxx
@@ -830,17 +830,18 @@ void CMakeSetupDialog::doAbout()
     "\n"
     "CMake GUI maintained by csimsoft,\n"
     "built using Qt %2 (qt-project.org).\n"
-#ifdef CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL
+#ifdef USE_LGPL
     "\n"
     "The Qt Toolkit is Copyright (C) Digia Plc and/or its subsidiary(-ies).\n"
-    "Qt is licensed under terms of the GNU LGPLv2.1, available at:\n"
+    "Qt is licensed under terms of the GNU LGPLv" USE_LGPL ", available at:\n"
     " \"%3\""
 #endif
     );
   msg = msg.arg(cmVersion::GetCMakeVersion());
   msg = msg.arg(qVersion());
-#ifdef CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL
-  std::string lgpl = cmSystemTools::GetCMakeRoot() + "/Licenses/LGPLv2.1.txt";
+#ifdef USE_LGPL
+  std::string lgpl =
+    cmSystemTools::GetCMakeRoot() + "/Licenses/LGPLv" USE_LGPL ".txt";
   msg = msg.arg(lgpl.c_str());
 #endif
 
diff --git a/Utilities/Release/linux32_release.cmake b/Utilities/Release/linux32_release.cmake
index 6d096d1..4ef513e 100644
--- a/Utilities/Release/linux32_release.cmake
+++ b/Utilities/Release/linux32_release.cmake
@@ -17,7 +17,7 @@ OPENSSL_INCLUDE_DIR:PATH=/home/kitware/openssl-1.0.2h/include
 OPENSSL_SSL_LIBRARY:FILEPATH=/home/kitware/openssl-1.0.2h/lib/libssl.a
 CPACK_SYSTEM_NAME:STRING=Linux-i386
 BUILD_QtDialog:BOOL:=TRUE
-CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL:BOOL=TRUE
+CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL:STRING=2.1
 CMake_INSTALL_DEPENDENCIES:BOOL=ON
 QT_QMAKE_EXECUTABLE:FILEPATH=/home/kitware/qt-4.43-install/bin/qmake
 ")
diff --git a/Utilities/Release/linux64_release.cmake b/Utilities/Release/linux64_release.cmake
index cfe370b..7511c8a 100644
--- a/Utilities/Release/linux64_release.cmake
+++ b/Utilities/Release/linux64_release.cmake
@@ -17,7 +17,7 @@ OPENSSL_INCLUDE_DIR:PATH=/home/kitware/openssl-1.0.2h/include
 OPENSSL_SSL_LIBRARY:FILEPATH=/home/kitware/openssl-1.0.2h/lib/libssl.a
 CPACK_SYSTEM_NAME:STRING=Linux-x86_64
 BUILD_QtDialog:BOOL:=TRUE
-CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL:BOOL=TRUE
+CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL:STRING=2.1
 CMake_INSTALL_DEPENDENCIES:BOOL=ON
 QT_QMAKE_EXECUTABLE:FILEPATH=/home/kitware/qt-4.8.6/bin/qmake
 ")
diff --git a/Utilities/Release/osx_release.cmake b/Utilities/Release/osx_release.cmake
index 17f7df6..35705ed 100644
--- a/Utilities/Release/osx_release.cmake
+++ b/Utilities/Release/osx_release.cmake
@@ -18,7 +18,7 @@ CMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.7
 CMAKE_SKIP_BOOTSTRAP_TEST:STRING=TRUE
 CPACK_SYSTEM_NAME:STRING=Darwin-x86_64
 BUILD_QtDialog:BOOL=TRUE
-CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL:BOOL=TRUE
+CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL:STRING=3
 CMake_INSTALL_DEPENDENCIES:BOOL=ON
 CMAKE_SKIP_RPATH:BOOL=TRUE
 CMake_NO_C_STANDARD:BOOL=TRUE
diff --git a/Utilities/Release/win32_release.cmake b/Utilities/Release/win32_release.cmake
index ba83b26..3892441 100644
--- a/Utilities/Release/win32_release.cmake
+++ b/Utilities/Release/win32_release.cmake
@@ -15,7 +15,7 @@ CMAKE_SKIP_BOOTSTRAP_TEST:STRING=TRUE
 CMAKE_Fortran_COMPILER:FILEPATH=FALSE
 CMAKE_GENERATOR:INTERNAL=Ninja
 BUILD_QtDialog:BOOL:=TRUE
-CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL:BOOL=TRUE
+CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL:STRING=3
 CMake_INSTALL_DEPENDENCIES:BOOL=ON
 CMAKE_EXE_LINKER_FLAGS:STRING=-machine:x86 -subsystem:console,5.01
 ")
diff --git a/Utilities/Release/win64_release.cmake b/Utilities/Release/win64_release.cmake
index 8e207b5..923cc96 100644
--- a/Utilities/Release/win64_release.cmake
+++ b/Utilities/Release/win64_release.cmake
@@ -16,7 +16,7 @@ CMAKE_SKIP_BOOTSTRAP_TEST:STRING=TRUE
 CMAKE_Fortran_COMPILER:FILEPATH=FALSE
 CMAKE_GENERATOR:INTERNAL=Ninja
 BUILD_QtDialog:BOOL:=TRUE
-CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL:BOOL=TRUE
+CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL:STRING=3
 CMake_INSTALL_DEPENDENCIES:BOOL=ON
 CMAKE_EXE_LINKER_FLAGS:STRING=-machine:x64 -subsystem:console,5.02
 ")